Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Hi all! We have been experiencing an issue on site where threads have been missing the latest postings. The platform host Vanilla are working on this issue. A workaround that has been used by some is to navigate back from 1 to 10+ pages to re-sync the thread and this will then show the latest posts. Thanks, Mike.
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest
Hurricanes/Typhoons/Cyclones of 2017.
-
27-03-2017 5:34pm#1
Comments
-
-
Not sure how accurate that JTWC advisory is now, as the Australian Bureau of Meteorology are indicating a maximum 10 minute wind speed of 95 kts with gusts to 130. Pretty strong. Daylight now in eastern Australia. The eye has yet to come onshore.
http://www.bom.gov.au/cgi-bin/wrap_fwo.pl?IDQ20018.txt
Local radar image. Distinct eye feature can be seen.
http://www.bom.gov.au/products/IDR242.loop.shtml#skip
0 -
-
-
-
Advertisement
-
http://www.aljazeera.com/news/2017/04/atlantic-storm-hint-early-hurricane-season-170420093408155.html
It may have formed in open water, well away from any human habitation, but Sub-Tropical Depression One has already made a name for itself.
It shows on satellite imagery as a swirling mass of thunderstorms, located about 1,170km to the westsouthwest of The Azores. It has sustained winds of 55 kilometres per hour (km/h) and it is heading towards the north at 22km/h.
Such low pressure systems are usually confined to the hurricane season, which runs from June 1 to November 30. This depression seems to have beaten the odds, becoming only the fourth such depression recorded in the Atlantic, according to NOAA's Historical Hurricane Track website.
The formation of these tropical or sub-tropical lows usually requires sea surface temperatures (SSTs) of at least 26.5C. Currently, SSTs in the region are only 20C, and the disruptive effects of wind shear (the change of wind speed and direction with height) are quite high.
This depression seems to have sustained itself because of the very cold air extending through the atmosphere, which has supplied the atmospheric instability for thunderstorm formation, required for One's classification.
Only one of the previous April depressions - Tropical Storm Ana in 2003 - went on to become a named storm.
It is possible for systems to develop into full-blown storms outside the hurricane season. This happened in 2016, with Hurricane Alex in January and Tropical Storm Bonnie in May.
There are many state and private organisations that issue predictions of the coming hurricane season. The general consensus seems to be that activity will be slightly below average, with a total of 11 to 12 named storms, four to six hurricanes, and between zero and three major hurricanes.
It is unlikely that Sub-Tropical Depression One is going to cause any revision of the forecasts. If SSTs had been well above average, then that might have been a different matter. But seasonal hurricane forecasting is still in its relative infancy, so forecasters will be closely monitoring the situation in the Atlantic in the weeks ahead.
Source: Al Jazeera and news agencies0 -
-
-
-
-
Advertisement
-
Nothing happening in the Atlantic, but in the Pacific, Typhoon Noru has rapidly intensified to Cat. 3 and is slowly heading in the general direction of Kyūshū, Japan's southernmost island.
How the storm has intensified looks pretty cool
24 hours ago
Now
And look at the clouds inside the eyewall - it almost looks like theres a face smiling out at you
0 -
-
-
Well, Tropical Depression 8 became Tropical Storm Gert and is expected to become a Hurricane shortly and then complete extratropical transition within about 72 hrs then gradually weaken over the N Atlantic before it merges with a larger extratropical cyclone in 4 or 5 days .
https://twitter.com/NOAASatellites/status/897193673183682561
http://www.nhc.noaa.gov/text/refresh/MIATCDAT3+shtml/142047.shtml
Thereafter it looks like a large area of LP that steers in a NE'ly direction between Iceland and Scotland.
Will be interesting to see it's effect on our weather next weekend around Sat, Sun ,Mon. Will it hold that track , increase in intensity or decrease . Could there be a lot of rain from it ( likely IMO ). Its a huge area of LP but the winds don't look too significant at this stage but I would imagine that there would be a huge swell from it.
0 -
-
-
-
-
-
-
Advertisement
-
The track has changed more towards Ireland the last few runs. Wind would not seem to be a problem at this stage but rainfall could be high all right, very hard to know at the moment how much. That cold front part of the system could become a trailing front drawn up over Ireland Sun into Mon perhaps.
0 -
Gert is now Cat 2 Hurricane , first Cat 2 Hurricane of the season, got a lot stronger then originally anticipated I think, will be interesting to see how it interacts with the system coming out of Canada.
0 -
Just to see ex Gert or the remnants of Gert through , noticing that the models are differing quite a bit over Sun and Mon. Interesting to see the UKMO seem to show the system reorganize as it approaches our shores.The Jet might just put a bit of energy into it as it approaches ? Would think there could be a lot of rain and maybe windy if these charts materialize. This wont be nailed down for a couple of days yet.
0 -
Tropical Storm Harvey, having reformed in the last couple of days, is forecast to become a hurricane and potentially not move far from the Texas coastline for a number of days.
Rainfall maximum forecast of 10 to 15 inches up to localised maximum of 25 inches.
NHC advisory 15A
0 -
-
-
-
That stalling in the forecast looks very ominous alright, like getting 50%+ extra on rain than might be expected with floodwaters eventually coming up against storm surges and there being no place for the water to go but back and out of normal channels. Up to 35 inches of rain in some spots up to Wednesday forecast, that's enormous. It's bad enough when people are stuck in place for a day, this could lead to a number of days of inaccessibility in some areas first with wind, then with water. Minimum Central Pressure now 976mb. Max sustained wins now 140km/h 85mph, Category 1. Houston looks set to get a worrying amount of rain. Corpus Christi could be close to the centre as it makes landfall. Let's hope that the fact it is August doesn't affect preperations, particularly informing tourists of what to do where they are, which social media should help with.
Water vapour.
0 -
-
Advertisement
-
My wife sent me this Chinese footage of the storms effects, pretty incredible stuff.
Have a weather station?, why not join the Ireland Weather Network - http://irelandweather.eu/
0 -
-
Potential Tropical Cyclone Ten.
Very early to say how this one might effect us but at the moment to me the models showing it running out of power and dispersing just off the W of Ireland around next Sun or so as it comes up against a HP system centered over the UK. Too early to say how windy or wet .
0 -
I was premature in not calling it a "potential" tropical cyclone. Though it may (40% chance) or may not fully become one, that doesn't mean it doesn't pack a punch further on: Discussion 7
As Meteorite58 pointed out above, there's potential for this to impact on Ireland later on in some weakened shape.INIT 29/0900Z 33.5N 78.5W 35 KT 40 MPH...POTENTIAL TROP CYCLONE
12H 29/1800Z 35.4N 76.0W 40 KT 45 MPH
24H 30/0600Z 38.0N 71.5W 50 KT 60 MPH...POST-TROP/EXTRATROP
36H 30/1800Z 39.5N 66.5W 60 KT 70 MPH...POST-TROP/EXTRATROP
48H 31/0600Z 41.0N 61.0W 70 KT 80 MPH...POST-TROP/EXTRATROP
72H 01/0600Z 44.5N 50.0W 50 KT 60 MPH...POST-TROP/EXTRATROP
96H 02/0600Z 50.0N 33.0W 40 KT 45 MPH...POST-TROP/EXTRATROP
120H 03/0600Z 55.0N 19.0W 30 KT 35 MPH...POST-TROP/EXTRATROP
Also another potential near Cape Verde.
0 -
It'll be a little time before it can be reasonably accurately forecast where Irma will end up and how big a threat (if any at all) it is to populated areas but for now it is forecast to develop quite a bit over the Atlantic.
0 -
-
Advertisement
-
Hurricane Irma has developed very quickly with max sustained winds up to 155km/h already (Category 2 hurricane), 979mb min central pressure.
It is forecast to become a major hurricane in the next 12 hours. It is definitely one to watch over the coming five days to see where it is going to be headed after that and how intensely it may have developed. Right now it is a fair bit from any land, about 3,000km East.
0 -
-
-
-
-
Advertisement
-
-
The Atlantic season's activity so far is normal, as measured by the latest ACE figure.
Overall, the total global tropical activity is well below normal so far, with only about 83% of the climatological ACE acheived. The NW Pacific, despite the large SST anomalies, is only at 64%.
There is also a small feature further southeast of Irma, at about 10N, that could become something in a few days. It's down as 0% potential development in the next 48 hours, but the models over the past few days have been showing a small but deep system developing and moving towards the southern Windwards, which is about as far south as hurricanes can develop due to little or no Coriolis force that near to the Equator.
0 -
-
Tropical Storm Jose is forecast to become a Hurricane shortly and unfortunately it may have some impact on islands already heavily impacted by Hurricane Irma
Katia does not look like moving towards the Houston area so badly hit by Harvey, though it may come close to Hurricane strength before making landfall near where it is now in Mexico, with Mexico city potentially getting the Depression left over from TS Katia to move nearby.0 -
-
-
-
-
-
Interesting piece here about the weight of the water that fell from Harvey causing the Heuston area to sink by 2cm.
https://www.theatlantic.com/technology/archive/2017/09/hurricane-harvey-deformed-the-earths-crust-around-houston/538866/0 -
Advertisement
![[Deleted User]](/applications/dashboard/design/images/defaulticon.png)
https://www.youtube.com/watch?v=T4C0FEI1XO4
Advertisement