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2011 Tornado Season Thread

  • 03-04-2011 11:36am
    #1
    Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭


    Well, its that time of year again so I thought I'd start up a thread for this years North American Tornado season, a place to post links to the Storm Prediction Center's forecasts, live chaser streams for those that like 'virtual chasing', media reports & pics/vids etc.

    Anyway, we have a moderate risk for this evening :

    14obwio.jpg

    1ghevm.gif
    SPC AC 030558

    DAY 1 CONVECTIVE OUTLOOK
    NWS STORM PREDICTION CENTER NORMAN OK
    1258 AM CDT SUN APR 03 2011

    VALID 031200Z - 041200Z

    ...THERE IS A MDT RISK OF SVR TSTMS ACROSS PARTS OF ERN KS AND NW
    MO...

    ...THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF THE MID-MO
    VALLEY...CNTRL PLAINS...SRN PLAINS...WRN OZARKS AND WRN GREAT
    LAKES...

    ...SEVERE WEATHER EVENT EXPECTED FROM ERN KS NEWD ACROSS NRN MO INTO
    WRN AND NRN IL THIS AFTERNOON AND EVENING...

    ...MID-MO VALLEY/CNTRL PLAINS/MID-MS VALLEY/WRN GREAT LAKES...
    AN UPPER-LEVEL TROUGH WILL MOVE INTO THE NRN PLAINS AND CNTRL
    ROCKIES TODAY. WELL AHEAD OF THE SYSTEM...A POWERFUL 65 TO 80 KT
    LOW-LEVEL JET WILL BE IN PLACE ACROSS THE MID-MO VALLEY AND LOWER OH
    VALLEY THIS AFTERNOON. THE LOW-LEVEL JET WILL RAPIDLY TRANSPORT
    MOISTURE NEWD INTO THE SLIGHT RISK AREA BY MID-AFTERNOON WITH SFC
    DEWPOINTS LIKELY REACHING INTO THE MID 60S F FROM ERN KS NEWD TO WRN
    IL. THE MOIST AIRMASS SHOULD ALLOW MODERATE INSTABILITY TO DEVELOP
    ACROSS A BROAD AREA AHEAD OF A FAST-MOVING COLD FRONT. AS THE
    CAPPING INVERSION WEAKENS AND LOW-LEVEL CONVERGENCE INCREASES ALONG
    THE FRONT...NUMEROUS STRONG TO SEVERE THUNDERSTORMS SHOULD INITIATE
    WITH A BROKEN LINE DEVELOPING DURING THE LATE AFTERNOON.

    FORECAST SOUNDINGS AT 21Z SUGGEST THE STRONGEST INSTABILITY WILL BE
    LOCATED IN ERN KS AND WRN MO WHERE MLCAPE VALUES ARE FORECAST TO
    REACH THE 2500 TO 3500 J/KG RANGE. IN ADDITION...A PLUME OF STEEP
    MID-LEVEL LAPSE RATES IS FORECAST TO NOSE INTO ERN KS AND NW MO
    WHERE DEEP LAYER SHEAR SHOULD BE QUITE STRONG. THIS ENVIRONMENT WILL
    LIKELY SUPPORT SUPERCELL DEVELOPMENT WITH A WIDESPREAD THREAT FOR
    LARGE HAIL ESPECIALLY ACROSS ERN KS AND NW MO WHERE A MODERATE RISK
    AREA HAS BEEN OUTLOOKED. VERY LARGE HAIL WILL BE POSSIBLE WITH THE
    MORE DOMINATE SUPERCELLS THAT REMAIN DISCRETE. TORNADOES WILL ALSO
    BE POSSIBLE WITH THE BETTER-ORGANIZED SUPERCELLS. THE TORNADO THREAT
    MAY BE GREATEST NEWD ACROSS NRN MO INTO WRN AND NRN IL WHERE THE
    STORMS WILL HAVE ACCESS TO GREATER LOW-LEVEL SHEAR. IF DISCRETE
    ROTATING STORMS CAN PERSIST INTO THE EARLY EVENING WHEN THE
    LOW-LEVEL JET IS FORECAST TO STRENGTHEN...THEN AN ISOLATED STRONG
    TORNADO WILL BE POSSIBLE.
    DUE TO THE STRONG LOW-LEVEL FLOW OF 60 TO
    70 KT AND BECAUSE OF THE AMOUNT OF INSTABILITY FORECAST...WIND
    DAMAGE COULD BE WIDESPREAD FROM ERN KS NEWD ACROSS NRN MO INTO NW IL
    ESPECIALLY IF A NEARLY CONTINUOUS LINE OF INTENSE STORMS DEVELOPS
    DURING THE EARLY EVENING.

    ...SRN PLAINS/WRN OZARKS...
    MOISTENING OF THE AIRMASS ACROSS THE SRN PLAINS WILL CONTINUE TODAY
    AS THE SRN END OF A WELL-DEFINED LOW-LEVEL JET MOVES EWD ACROSS THE
    REGION. MODERATE INSTABILITY IS FORECAST BY MID TO LATE AFTERNOON
    FROM CNTRL AND NORTH TX EXTENDING NWD INTO CNTRL AND ERN OK WHERE
    FORECAST SOUNDINGS SHOW MLCAPE VALUES AROUND 2500 J/KG. IN SPITE OF
    THE INSTABILITY...A CAPPING INVERSION WILL LIKELY REMAIN IN PLACE
    FOR MUCH OF THE AFTERNOON AND EVENING SUPPRESSING CONVECTIVE
    DEVELOPMENT. SEVERAL MODEL FORECASTS INITIATE STORMS IN NE OK AND NW
    AR DURING THE LATE EVENING WITH STORMS EXPANDING SWWD ALONG A COLD
    FRONT DURING THE OVERNIGHT PERIOD. THE MODERATE INSTABILITY...STEEP
    MID-LEVEL LAPSE RATES AND STRONG DEEP LAYER SHEAR SHOULD BE
    SUFFICIENT FOR A LARGE HAIL AND WIND DAMAGE THREAT. AFTER
    MIDNIGHT...ISOLATED THUNDERSTORM DEVELOPMENT COULD OCCUR SWWD ACROSS
    CNTRL AND NORTH TX AS THE COLD FRONT MOVES INTO THE REGION FROM THE
    NORTHWEST. FORECAST SOUNDINGS IN CNTRL AND NORTH TX AT 09Z TO 12Z
    SUGGEST DEEP LAYER SHEAR MAY BE STRONG ENOUGH FOR A MARGINAL WIND
    DAMAGE AND HAIL THREAT.

    ..BROYLES/GARNER.. 04/03/2011

    CLICK TO GET WUUS01 PTSDY1 PRODUCT

    NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 1300Z

    http://www.spc.noaa.gov/products/outlook/day1otlk.html

    For those interested in virtual chasing, if you've watched any of the episodes of Storm Chasers on Discovery then you'll know Reed Timmer of TVN. You'll be able to follow him and other chasers via his website : http://chase.tornadovideos.net/pages/full_screen

    Also keep an eye on the streams from chasers from Severe Studios : http://www.severestudios.com/livechase
    I'd recommend looking out for Tyler Costantini on that page since he is one of the few chasers that provides audio along with video during chases and also sometimes does a 'live show' type format while chasing by taking questions via facebook/twitter etc.


«134567

Comments

  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29




  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    Reed Timmer & co. and about half a dozen more streaming chasers in Kansas on the TVN live page now.

    http://chase.tornadovideos.net/pages/full_screen

    Latest forecast from the SPC mentions...
    FAST EASTWARD-MOVING SUPERCELLS /40-45 KT/ ARE
    PROBABLE...INCLUDING ASSOCIATED POTENTIAL FOR LARGE HAIL AND
    ISOLATED TORNADOES...

    Still wont be anything kicking off anytime soon.


  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    mcd0327.gif


  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29


    mcd0327.gif
    Wheres the weather channel link for ther live video ? :(


  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    Iancar29 wrote: »
    Wheres the weather channel link for ther live video ? :(

    Pulled it, the live broadcasting stopped. :mad:

    Btw, Tyler is streaming now, with audio.

    http://www.severestudios.com/cgi-bin/player.pl?username=tyler.costantini&uid=157


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  • Registered Users, Registered Users 2 Posts: 1,206 ✭✭✭eskimocat




  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    Tornado watch issued :

    ww0082_radar_big.gif
    URGENT - IMMEDIATE BROADCAST REQUESTED
    TORNADO WATCH NUMBER 82
    NWS STORM PREDICTION CENTER NORMAN OK
    600 PM CDT SUN APR 3 2011

    THE NWS STORM PREDICTION CENTER HAS ISSUED A
    TORNADO WATCH FOR PORTIONS OF

    EASTERN IOWA
    WESTERN AND NORTHERN ILLINOIS
    EXTREME NORTHEAST MISSOURI
    FAR SOUTHERN WISCONSIN

    EFFECTIVE THIS SUNDAY NIGHT FROM 600 PM UNTIL MIDNIGHT CDT.

    TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND
    GUSTS TO 75 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
    AREAS.

    THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE
    MILES EAST AND WEST OF A LINE FROM 45 MILES SOUTH SOUTHEAST OF
    OTTUMWA IOWA TO 35 MILES EAST NORTHEAST OF DUBUQUE IOWA. FOR A
    COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
    UPDATE (WOUS64 KWNS WOU2).

    REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
    TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
    AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
    THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
    AND POSSIBLE WARNINGS.

    DISCUSSION...THUNDERSTORMS HAVE BEGUN TO FORM ALONG THE COLD FRONT
    OVER IA. THESE STORMS ARE EXPECTED TO INCREASE IN COVERAGE AND
    INTENSITY THROUGH THE EVENING HOURS AND SPREAD INTO WESTERN IL.
    LARGE HAIL AND DAMAGING WINDS ARE THE MAIN THREATS. HOWEVER...THE
    POTENTIAL EXISTS FOR ISOLATED TORNADOES ESPECIALLY NEAR THE SURFACE
    WARM FRONT OVER NORTHERN IL OR PERHAPS FAR SOUTHERN WI.

    AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
    SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
    WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
    500. MEAN STORM MOTION VECTOR 26040.


    ...HART


  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    Storm went up fast.

    WUNIDS_map?station=TWX&brand=wui&num=6&delay=15&type=N0R&frame=0&scale=0.326&noclutter=0&t=1301872372&lat=0&lon=0&label=you&showstorms=0&map.x=400&map.y=240&centerx=393&centery=264&transx=-7&transy=24&showlabels=1&severe=0&rainsnow=0&lightning=0&smooth=0


  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29


    Storm went up fast.

    WUNIDS_map?station=TWX&brand=wui&num=6&delay=15&type=N0R&frame=0&scale=0.326&noclutter=0&t=1301872372&lat=0&lon=0&label=you&showstorms=0&map.x=400&map.y=240&centerx=393&centery=264&transx=-7&transy=24&showlabels=1&severe=0&rainsnow=0&lightning=0&smooth=0


    In just a half hour!?... now thats a gun shot storm right ther ! :D


  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    Iancar29 wrote: »
    In just a half hour!?... now thats a gun shot storm right ther ! :D

    Verne Carlson has a really nice view of it on the TVN live page.

    Tyler approaching it too http://www.severestudios.com/cgi-bin/player.pl?username=tyler.costantini&uid=157


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  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29


    Verne Carlson has a really nice view of it on the TVN live page.


    yep ... have that up right now , it looks huge from where he is!

    TOo bad theres no audio. :(


  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    Iancar29 wrote: »
    yep ... have that up right now , it looks huge from where he is!

    TOo bad theres no audio. :(

    Tyler and Jacob are chatting away on their stream.

    Pic of the supercell from Reed :
    binl6t.jpg

    More storms firing behind the Topeka storm :

    WUNIDS_map?station=TWX&brand=wui&num=6&delay=15&type=N0R&frame=0&scale=0.465&noclutter=0&t=1301873855&lat=0&lon=0&label=you&showstorms=10&map.x=400&map.y=240&centerx=449&centery=293&transx=49&transy=53&showlabels=1&severe=0&rainsnow=0&lightning=0&smooth=0


  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29


    Looks like Verne is hunkering down now! :D


  • Registered Users, Registered Users 2 Posts: 14,742 ✭✭✭✭M.T. Cranium


    Radar for anyone wanting to follow live developments:

    http://radar.weather.gov/radar.php?rid=dvn&product=N0R&overlay=11101111&loop=no

    I expect some tornadic storms to develop near the Mississippi River border of Iowa and Illinois this evening (local time) and spread into Illinois by about 0200-0400z.


  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    Argh, I closed down Tylers stream and now can't reconnect to Severe Studios. :mad:

    (Edit : found a working link on his site http://www.thestormpatrol.com/live/ )

    9hjho1.jpg


  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29


    The Topeka Cell. In comparision to storms the we get, like for example the shower we got yesterday in leinster, would this be considerably bigger, or just more intense?... trying to get my head around it.

    Haha, Reed has ther Video camera out!


  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    Iancar29 wrote: »
    The Topeka Cell. In comparision to storms the we get, like for example the shower we got yesterday in leinster, would this be considerably bigger, or just more intense?... trying to get my head around it.

    Haha, Reed has ther Video camera out!

    A supercell compared to those showers yesterday?

    As Jimmy McGee once said.... :D:D


  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    No tornado reports (yet), plenty of hail reports though.

    Some great views on some of the live streams tonight at least. :D Very jealous that Ian will be seeing those vistas for real!


  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    No tornado reports at all from yesterday evening & overnight.

    SPC has forecast another Moderate Risk for today again :

    vsjd53.gif

    day1probotlk_1200_torn.gif
    SPC AC 040619

    DAY 1 CONVECTIVE OUTLOOK CORR 1
    NWS STORM PREDICTION CENTER NORMAN OK
    0119 AM CDT MON APR 04 2011

    VALID 041200Z - 051200Z

    ...THERE IS A MDT RISK OF SVR TSTMS ACROSS PARTS OF WRN
    TN...MS...FAR SE AR...NW AL AND A SMALL PART OF SW KY...

    ...THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF THE LOWER TO
    MID-MS VALLEY...SRN PLAINS...TN VALLEY...OH VALLEY AND CNTRL TO SRN
    APPALACHIAN MTNS...

    CORRECTED FOR SQUALL-LINE TIMING IN THE TN VALLEY THIS AFTERNOON
    AFTER COORDINATING WITH WFO BIRMINGHAM

    ...SEVERE WEATHER EVENT TODAY ACROSS THE LOWER TO MID-MS VALLEY AND
    TN VALLEY...

    ...LOWER TO MID-MS VALLEY/TN VALLEY...
    AN UPPER-LEVEL TROUGH WILL MOVE INTO THE CNTRL AND SRN PLAINS TODAY
    AS A POWERFUL 90 TO 110 KT MID-LEVEL JET MOVES EWD INTO THE MID-MS
    VALLEY. A LINE OF STRONG THUNDERSTORMS SHOULD BE ONGOING THIS
    MORNING FROM SE MO SWWD ACROSS CNTRL AR. AHEAD OF THE LINE...SFC
    DEWPOINTS ACROSS THE WARM SECTOR WILL BE IN THE MID TO UPPER 60S
    F...ALLOWING FOR THE DEVELOPMENT OF MODERATE INSTABILITY ACROSS A
    BROAD AREA. AS THE LINE MOVES SEWD...A GRADUAL INTENSIFICATION
    SHOULD OCCUR AND CONVECTIVE COVERAGE SHOULD RAPIDLY INCREASE LATE
    THIS MORNING. MODEL FORECASTS ARE CONSISTENT...ORGANIZING A NEARLY
    CONTINUOUS SQUALL-LINE BEGINNING NEAR THE MS RIVER IN FAR ERN AR
    LATE THIS MORNING AND DRIVING THE LINE ESEWD ACROSS WRN TN...SE AR
    AND NRN MS EARLY THIS AFTERNOON INTO CNTRL MS...MIDDLE TN AND NW AL
    LATE THIS AFTERNOON. THIS LINE WILL BE ON THE SEWD SIDE OF A
    WELL-DEVELOPED MID-LEVEL JET WHICH SHOULD PRODUCE STRONG DEEP LAYER
    SHEAR TO SUPPORT SEVERE THUNDERSTORM DEVELOPMENT ACROSS A WIDESPREAD
    AREA. THE WIND DAMAGE THREAT SHOULD BE ENHANCED ACROSS WRN TN...NRN
    TO CNTRL MS...NW AL...FAR SE AR AND FAR NE LA WHERE A MODERATE RISK
    HAS BEEN OUTLOOKED. THIS CORRIDOR SHOULD HAVE THE MOST FAVORABLE
    SHEAR PROFILES FOR SEVERE STORMS DUE TO THE CROSSOVER OF THE LOW AND
    MID-LEVEL JETS. A TORNADO THREAT WILL ALSO EXIST WITH ROTATING
    STORMS EMBEDDED IN THE LINE OR WITH ISOLATED SUPERCELLS THAT
    INITIATE AHEAD OF THE LINE.
    A THREAT FOR HAIL WILL ALSO BE LIKELY
    WITH THE MORE INTENSE CORES.

    FURTHER TO THE SOUTH ACROSS THE LOWER MS VALLEY...MODERATE
    INSTABILITY WILL BE IN PLACE AND THUNDERSTORMS ARE EXPECTED TO
    DEVELOP ALONG THE FRONT BY EARLY AFTERNOON. AS A RESULT...A THREAT
    FOR HAIL AND WIND DAMAGE SHOULD EXIST SWWD ACROSS LA INTO SE TX BY
    EARLY THIS AFTERNOON WITH THIS POTENTIAL MOVING EWD INTO CNTRL AND
    SRN MS BY LATE AFTERNOON. ALTHOUGH THE LINE COULD CONTINUE EWD INTO
    SRN AL AND THE FL PANHANDLE THIS EVENING...INSTABILITY IS FORECAST
    TO WEAKEN SUGGESTING THE SEVERE THREAT SHOULD BECOME INCREASINGLY
    ISOLATED.

    ....OH VALLEY/CNTRL APPALACHIAN MTNS...
    AN AXIS OF LOW-LEVEL MOISTURE WILL MOVE EWD ACROSS THE OH VALLEY
    THIS MORNING AND INTO THE CNTRL APPALACHIAN MTNS THIS AFTERNOON AS A
    COLD FRONT ADVANCES QUICKLY EWD ACROSS THE REGION. THUNDERSTORMS
    SHOULD DEVELOP ALONG THE FRONT AS SFC HEATING TAKES PLACE THIS
    MORNING WITH A LINE OF STORMS ORGANIZING IN ERN IND AND CNTRL KY
    AROUND MIDDAY. STRONG DEEP LAYER SHEAR PROFILES WITH 40 TO 50 KT OF
    LOW-LEVEL FLOW SHOULD BE SUFFICIENT FOR A WIND DAMAGE THREAT WITH
    THE MORE INTENSE CELLS EMBEDDED IN THE LINE. IN ADDITION...THE
    STRONG DEEP LAYER SHEAR AND 500 MB TEMPS OF -14 TO 16C SHOULD BE
    SUFFICIENT FOR ISOLATED HAIL THREAT. THIS THREAT SHOULD MOVE EWD
    ACROSS OH...ERN KY INTO WV BY EARLY EVENING.

    ..BROYLES.. 04/04/2011

    Might not be as many chasers out for this.


  • Registered Users, Registered Users 2 Posts: 14,742 ✭✭✭✭M.T. Cranium


    No damaging funnels but pictures of partially formed funnels over MO and IL, meanwhile many reports of hail and strong winds and a major lightning display overnight ahead of the cold front. Looks to me as though tornadic storms will develop today, the activity is holding together very well overnight (currently 0430 CDT) and severe warned cells in AR, MO, IL, IN at this early hour, while I agree with the SPC map in general I feel that Ohio might be more at risk of a tornado than would be suspected from that map. The low continues to deepen at present, and is progged to turn more northeast pulling up the very warm air. As an indication of how warm it is, a station in southern IL (Carmi) reports 27 C (80 F) at this hour of the night. That is about 20 C deg above normal for that location. And it is generally in the 70s (F) all over KY, IN and western OH and almost that warm in southern MI now that the low has turned northeast. With daylight, there will probably be some tornadoes along the cold front today.


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  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29


    Couldnt stay awake last nite ha, hopefully more for 2nite tough! :)

    Heres the GUSTNADO ( NOT TORNADO REED! ha ) that they seen yesterday...


  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29


    Tornado Watch issued ...
    ww0089_radar_big.gif


  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    MIDSCAR-HARV2 is streaming live (with audio) on TVN, very early in the morning : http://chase.tornadovideos.net/pages/full_screen


  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29


    Tornado warning issued for just West of longview.


  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    Iancar29 wrote: »
    Tornado warning issued for just West of longview.

    Warnings are up here : http://www.weather.gov/view/national.php?prodtype=tornado

    No reports of a tornado on the ground though.


  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    Two more tornado watches.
    THE NWS STORM PREDICTION CENTER HAS ISSUED A
    TORNADO WATCH FOR PORTIONS OF

    EXTREME SOUTHEAST ARKANSAS
    SOUTHERN LOUISIANA
    CENTRAL MISSISSIPPI
    EXTREME SOUTHEAST TEXAS
    COASTAL WATERS

    EFFECTIVE THIS MONDAY MORNING AND EVENING FROM 1055 AM UNTIL 600
    PM CDT.
    THE NWS STORM PREDICTION CENTER HAS ISSUED A
    TORNADO WATCH FOR PORTIONS OF

    EXTREME SOUTHERN INDIANA
    CENTRAL KENTUCKY
    MIDDLE TENNESSEE

    EFFECTIVE THIS MONDAY MORNING AND EVENING FROM 1135 AM UNTIL 600
    PM CDT.


  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    Tornado damage, injuries reported.

    TV news live coverage : http://www.wsmv.com/video/9624406/index.html

    MIDSCAR streaming coverage of tornado warned storm here : http://chase.tornadovideos.net/pages/full_screen

    Report from HOPKINSVILLE :
    TORNADO ON SOUTHEAST SIDE OF COMMUNITY. THE TGASK MANUFACTURING PLANT DIRECTLY HIT. SEVERAL INJURIES WITH WIDESPREAD DEBRIS FIELD.

    More details : http://www.wsmv.com/weather/27406300/detail.html


  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    Latest Tornado Watch :

    ww0095_warnings_resize.gif

    Moderate risk of EF2+ twisters on this one.


  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29


    Latest Tornado Watch :

    ww0095_warnings_resize.gif

    Moderate risk of EF2+ twisters on this one.

    TWC still dont have there live stream back on ! :(


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  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29




  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    Total of 20 tornado reports from yesterday (red dots) :

    21kbgxu.png

    There are still some tornado watches in effect as the storm line moves towards the coast.

    SPC is going for a Slight Risk today and the same for Thursday.


  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29


    I was Surprised not seeing many chasers on yesterday ... Maybe because it was the start of a working week, but ye , hope I didn't miss any of those reported tornadoes on any streams when I went off.

    Next real good day looks to be Friday if the models keep hold, dry line making a big impact b4 a cold front plows right through.


  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    Iancar29 wrote: »
    I was Surprised not seeing many chasers on yesterday ... Maybe because it was the start of a working week, but ye , hope I didn't miss any of those reported tornadoes on any streams when I went off.

    Next real good day looks to be Friday if the models keep hold, dry line making a big impact b4 a cold front plows right through.

    Yeah you'll always see more chasers out on the weekend or when there is a Severe Risk.

    I see the SPC is going for a Severe on Sunday but that could downgrade by the time that comes around.


  • Registered Users, Registered Users 2 Posts: 14,742 ✭✭✭✭M.T. Cranium


    Also, many don't like to chase in AR, TN, KY, OH or MS, LA because there are so many trees compared to the plains states further north and west. In the main storm chase season, given a choice, most teams will take a slight risk in open country over a high risk in the more forested deep south.

    I think there are some big tornado days coming up in the plains states on the weekend.


  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29


    Latest SWODY4-8 Just coming out now is Showing Saturday as "Severe" as expected, Sunday a tad further east again in the Dixie Valleys. Much further ahead to next Tuesday shows another Strongish Trough ejecting across the Plains just in time for the first Brit Chasing Teams arrival, they must be salivating at the Outlook at the moment!

    Thursday sees me at the Moment on the KS/OK Border but not expecting much in the way of Tornado activity.

    Friday at the moment I like just North of Oklahoma City (Subject to change obviously)

    Saturday looking like another Emporia to western MO Day.

    After that would possibly be good for Southern Illinois on Sunday .

    It's like May already out there help.gifwacko.gif


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  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    Iancar29 wrote: »
    Latest SWODY4-8 Just coming out now is Showing Saturday as "Severe" as expected, Sunday a tad further east again in the Dixie Valleys. Much further ahead to next Tuesday shows another Strongish Trough ejecting across the Plains just in time for the first Brit Chasing Teams arrival, they must be salivating at the Outlook at the moment!

    Thursday sees me at the Moment on the KS/OK Border but not expecting much in the way of Tornado activity.

    Friday at the moment I like just North of Oklahoma City (Subject to change obviously)

    Saturday looking like another Emporia to western MO Day.

    After that would possibly be good for Southern Illinois on Sunday .

    It's like May already out there help.gifwacko.gif

    That sounds like Paul from NW? :D

    Yeah interesting few days ahead, Slight Risks for Thursday & Friday and then a Severe Risk weekend.


  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29


    That sounds like Paul from NW? :D

    Yeah interesting few days ahead, Slight Risks for Thursday & Friday and then a Severe Risk weekend.


    Oh ye haha.... i forgot to put in the " ... " ....... haha :D

    U on NW Maq?


  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    Iancar29 wrote: »
    Oh ye haha.... i forgot to put in the " ... " ....... haha :D

    U on NW Maq?

    I have a wee lurk on there sometimes but thats about it. :pac:


  • Registered Users, Registered Users 2 Posts: 1,789 ✭✭✭BEASTERLY


    Iancar29 wrote: »
    Oh ye haha.... i forgot to put in the " ... " ....... haha :D

    U on NW Maq?

    I wondered how you got NW emoticons on boards.ie lol, never even crossed my mind that it was copied:rolleyes:


  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29


    BEASTERLY wrote: »
    I wondered how you got NW emoticons on boards.ie lol, never even crossed my mind that it was copied:rolleyes:


    haha... i promise i really did forget to put in the quotations!.... PLEASE BELIEVE ME!!! .......:(

    ha


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  • Registered Users, Registered Users 2 Posts: 1,789 ✭✭✭BEASTERLY


    Iancar29 wrote: »
    haha... i promise i really did forget to put in the quotations!.... PLEASE BELIEVE ME!!! .......:(

    ha

    yeah right, you tought we didnt go on NW so you chanced it! Typical! Only joking!:pac:

    I dont even go into the NW forum , my involvement in the climate section ended my time there:(. The site overall is still a very good one.


  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29


    "Reed Timmer: Meteorologist and Extreme Storm Chaser
    Friday-Sunday look HUGE. NEVER STOP CHASING!"


  • Posts: 6,025 ✭✭✭ [Deleted User]


    Brilliant thread lads/ ladies :) Just back from tornadic weather meself. Brilliant enjoyed every bit of it.
    Didnt get pics, cos I was going to buy camera over there, only couldnt get to the shops because of the bleedin weather :) Saw some magnificent forked lightning over the bay. Thunder was fierce, like there was a great battle of iron behemoths in the sky. Loved it. Sat on the balcony and watched every bit. :)
    Id love to go for hurricane season next .


    Heres a slideshow from the local news, if anyone interested.


    http://www.baynews9.com/article/news/2011/march/225230/Wednesdays-weather-causes-damage-throughout-area


  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    SPC has a Slight Risk for today and tomorrow.
    Saturday has been downgraded to Slight now too.
    Sunday is still pegged as Severe.


  • Registered Users, Registered Users 2 Posts: 1,206 ✭✭✭eskimocat


    I was wondering if the forecasting of suitable tornado weather 3 or 4 days in advance is the same as reading the FI charts? Do they more regularly get down graded, rather than up graded?


  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    eskimocat wrote: »
    I was wondering if the forecasting of suitable tornado weather 3 or 4 days in advance is the same as reading the FI charts? Do they more regularly get down graded, rather than up graded?

    I've seen Day 1 forecasts go from Slight to Severe on the day itself.


  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29


    DAY 4-8 CONVECTIVE OUTLOOK
    NWS STORM PREDICTION CENTER NORMAN OK
    0357 AM CDT THU APR 07 2011

    VALID 101200Z - 151200Z

    ...DISCUSSION...
    07/00Z GFS IS IN AGREEMENT WITH THE LAST THREE RUNS OF THE ECMWF
    SHOWING THE STRONGER FORCING FOR ASCENT WITH THE WRN TROUGH TRACKING
    THE SRN/CENTRAL ROCKIES AND REACHING THE MID SOUTH TO WRN GREAT
    LAKES BY THE END OF DAY 4 /12Z MON APR 11/. WHILE EACH MODEL
    MAINTAINS THE PROGRESSIVENESS OF THIS SYSTEM ON DAY 5 /MON APR
    11/...THE GFS INDICATES THE TROUGH BECOMES NEGATIVELY TILTED MOVING
    INTO THE NERN STATES. THE ECMWF DURING THIS SAME PERIOD IS SLOWER
    WITH EWD MOVEMENT WITH A MORE NEUTRAL TO POSITIVELY-TILTED TROUGH.
    THE DIFFERENT SOLUTIONS ATTENDANT TO THIS ERN TROUGH ON DAY 5 RESULT
    IN VARYING MAGNITUDES OF AN UPSTREAM RIDGE OVER THE CENTRAL
    STATES...AND THE SUBSEQUENT EWD MOVEMENT OF A PACIFIC TROUGH FROM
    THE WEST COAST TO MS VALLEY NEXT WEEK.

    ...DAY 4 /SUN APR 10/...
    THE POTENTIAL FOR A REGIONAL SEVERE THREAT EXTENDING FROM NRN LA TO
    IA AND EWD THROUGH THE TN/OH VALLEYS AND PART OF THE WRN GREAT LAKES
    FROM SUNDAY AFTERNOON THROUGH SUNDAY NIGHT/EARLY MONDAY MORNING
    REMAINS VERY LIKELY. CONFIDENCE REMAINS HIGH FOR THIS SEVERE
    WEATHER EVENT WITH THE POTENTIAL FOR DAMAGING WINDS AND TORNADOES AS
    STRONG HEIGHT FALLS SPREAD ACROSS THE DAY 4 OUTLOOK AREA...
    ESPECIALLY DURING THE LATTER HALF OF THE FORECAST PERIOD.

    A SURFACE LOW ATTENDANT TO THE PROGRESSIVE MID-UPPER LEVEL TROUGH IS
    EXPECTED TO TRACK FROM WRN KS INTO IA BY LATE SUNDAY AFTERNOON AND
    REACH THE WRN GREAT LAKES BY 12Z MONDAY. A TRAILING COLD FRONT IS
    EXPECTED TO OVERTAKE THE PLAINS DRY LINE WITH TSTMS DEVELOPING
    INITIALLY FROM ERN OK TO WRN IA. SLY LOW LEVEL WINDS WILL MAINTAIN
    A MOIST AIR MASS ALREADY IN PLACE AT THE START OF DAY 4 AND SUPPORT
    A MODERATELY UNSTABLE WARM SECTOR. STRENGTHENING DEEP LAYER WIND
    FIELDS ACROSS THE UNSTABLE AIR MASS WILL PROMOTE BOTH LINE SEGMENTS
    AND SUPERCELLS WITH THE INITIAL ACTIVITY SPREADING TO THE MS VALLEY.
    FOR SUNDAY NIGHT...THE SEVERE WEATHER THREAT SHOULD EVOLVE TO
    PRIMARILY DAMAGING WINDS AS A BROAD SWLY LLJ /50-70 KT/ DEVELOPS
    FROM THE MID SOUTH TO OH VALLEY AND A SQUALL LINE ADVANCES EWD FROM
    THE MS VALLEY.


  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    SPC is going for a Moderate Risk on Sunday now, with a chance of strong tornadoes.


  • Registered Users, Registered Users 2 Posts: 5,068 ✭✭✭Iancar29


    SPC is going for a Moderate Risk on Sunday now, with a chance of strong tornadoes.


    Woo! i hav sunday off work ......to ehhh.... STUDY! ha ... glad that i do my study... on the computer! haha :D


  • Registered Users, Registered Users 2 Posts: 11,134 ✭✭✭✭maquiladora


    Buckle up....

    SPC has issued a Moderate Risk for both today and tomorrow now. And it looks like there will be an upgrade to High Risk on Sunday...
    ...SYNOPSIS...

    A POTENTIALLY SIGNIFICANT WEATHER PATTERN IS DEVELOPING ACROSS
    PORTIONS OF THE COUNTRY EAST OF THE ROCKIES OVER THE NEXT FEW DAYS.
    OF PARTICULAR INTEREST SATURDAY WILL BE A CORRIDOR OF THE UPPER MS
    VALLEY DURING THE LATE AFTERNOON INTO THE EVENING HOURS WHERE VERY
    LARGE HAIL AND EVEN A FEW STRONG TORNADOES ARE POSSIBLE. ANOTHER
    AREA OF ORGANIZED SEVERE IS POSSIBLE FROM PORTIONS OF THE LOWER OH
    VALLEY...SEWD INTO SC.

    eq719x.gif

    And for Sunday....
    ...TORNADO OUTBREAK POSSIBLE SUNDAY AFTERNOON AND EVENING ACROSS THE
    UPPER MS VALLEY...


    ...UPPER MS VALLEY...
    AN IMPRESSIVE UPPER-LEVEL TROUGH WILL MOVE INTO THE GREAT PLAINS
    SUNDAY AS A POWERFUL 90 TO 110 KT MID-LEVEL JET EJECTS NEWD ACROSS
    THE CNTRL STATES. AT THE SFC...A STRONG LOW WILL MOVE NEWD INTO IA
    SUNDAY AFTERNOON WITH SFC DEWPOINTS REACHING THE LOWER TO MID 60S F
    SOUTH OF A WARM FRONT ACROSS MUCH OF THE UPPER MIDWEST. THE EXIT
    REGION OF THE JET WILL OVERSPREAD THE UPPER MS VALLEY SUNDAY
    AFTERNOON CREATING STRONG DEEP LAYER SHEAR PROFILES VERY FAVORABLE
    FOR SEVERE STORMS. THIS COMBINED WITH STRONG INSTABILITY WILL RESULT
    IN A SIGNIFICANT POSSIBILITY FOR SUPERCELLS AND TORNADOES ACROSS THE
    MODERATE RISK AREA. AN UPGRADE TO HIGH RISK APPEARS LIKELY ACROSS A
    PORTION OF THE UPPER MS VALLEY IN LATER OUTLOOKS.


    THE CURRENT THINKING IS THAT CELLS WILL FIRST DEVELOP IN NRN IA AND
    SE MN AND MOVE INTO NRN WI DURING THE AFTERNOON AHEAD OF THE TRACK
    OF A SFC LOW AND ALONG A WARM FRONT. FORECAST SOUNDINGS AT 21Z NEAR
    THE WARM FRONT SHOW MLCAPE VALUES AROUND 2000 J/KG...0-6 KM SHEAR
    VALUES NEAR 60 KT AND 0-3 STORM RELATIVE HELICITIES OF 250 TO 350
    M2/S2. LOW-LEVEL SHEAR SHOULD INCREASE WITH TIME AS A LOW-LEVEL JET
    STRENGTHENS AND APPROACHES FROM THE SOUTH. THIS ENVIRONMENT SHOULD
    SUPPORT THE DEVELOPMENT OF TORNADIC SUPERCELLS WITH A POTENTIAL FOR
    LONG-TRACK TORNADOES WITH CELLS THAT TRACK ENEWD ALONG THE WARM
    FRONT.
    ADDITIONAL SEVERE STORM DEVELOPMENT SHOULD OCCUR SWD ACROSS
    THE WARM SECTOR FROM ERN IA NEWD INTO SRN AND CNTRL WI BY EARLY
    EVENING. THIS ACTIVITY SHOULD ALSO RAPIDLY BECOME SUPERCELLULAR WITH
    TORNADOES AND LARGE HAIL LIKELY
    WITH THE MORE DOMINANT CELLS. A
    THREAT FOR STRONG TORNADOES SHOULD CONTINUE THROUGH MUCH OF THE
    EVENING
    AS A CLUSTER OF SUPERCELLS MOVES ENEWD ACROSS WI. SEVERE
    STORMS SHOULD ALSO DEVELOP SWD INTO NRN AND WRN IL WHERE THE
    STRONGER CELLS SHOULD HAVE A TORNADO...WIND DAMAGE AND LARGE THREAT
    DURING THE EVENING.

    t9uyyc.gif


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