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Storm Brendan Monday 13 Jan 2020 ** See Mod note in OP before posting**
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10-01-2020 9:18pm#1Worth opening a dedicated thread for the storm next Monday. Whilst at the moment it looks like we might miss the strongest winds as they look to keep off the NW, models after downgrading the winds over the last couple of days seem to be increasing them again over the last couple of runs. The storm is deepening as it approaches off the W.
Most notable is the increase in winds in the SW and along Southern and SE counties. Looks at present like the strongest winds keeping to along coastal counties . Currently looks like winds tipping 130 and maybe up to 140 km/h along W coastal fringes and 110 to 120 along the SW , S and SE. Looks like getting up to 80 to 90 km/h overland and possibly squally as the front goes through giving stronger local winds.
As ever this is not a definite and could increase or decrease, the way the models all upgraded the wind speeds and bringing the core of the winds quite close leads me to think that they could increase further but that is only my opinion. Next few runs will give a clearer picture.
Big seas also to be expected.
Rain not as big an issue atm ( maybe 10 to 15mm looking at present ) but adds to the difficult conditions when so windy.
Mod Note: This is expected to become a busy thread. Stay on topic to the discussion of Storm Brendan. Please use appropriate threads for all other discussion. Off topic posts will be removed. Any attempts to derail thread will be met with appropriate action. Your cooperation is required for the benefit of all.
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Bombogenesis .
Can see how fast the pressure drops in this system as it rapidly intensifies along the boundary of the relatively mild and very cold air mass , over 40 mb in 24 hrs from what I can make out. Looks like it could get down to 938mb
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ARPEGE looks the strongest overland atm, about the same as ECM on the coasts, ICON next and GFS not far behind.
How close the strongest core gets will be interesting. Amazing how closely bunched the models are at this stage and it hasn't even formed yet! Of course this will be deepening so quickly and moving so fast that the track and strength could easily change some bit .
Gust charts
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ECM 18C showing a big jump in wind strength especially the W and around Mayo and Donegal especially on this run. Now showing the storm closer again and showing winds penetrating further inland in the W and also showing stronger winds in Southern counties and penetrating further inland there also.
The risk of severe winds in the W starting to certainly make an appearance now.
Southern counties also showing some very strong winds.
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Slight adjustment by the ECM 0Z bringing the center out a little bit and in turn bringing the wind speeds back a small bit on this run. In general looks like gusting up around 120 km/h in SW, S and SE counties. The W looks like getting up around 100 to 110 km/h , up around 120 km/h on coasts and parts of Mayo and Donegal could see as high as 130 to 140 km/h going by the last couple of runs. Inland could see winds 80 to 90 km/h and locally up to 100km/h especialy on higher ground as the front goes through.
[Imgur](https://imgur.com/IFvIn9B)
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The low develops on what's currently a slack trough currently in the Great Lakes region. The northerly cold outbreak down Baffin Bay strengthens the jet to over 200 knots tomorrow, leading to rapic cyclogenesis east of New Foundland. The exact track of the surface low will depend on how it phases with the upper jet, so small changes in that will lead to relatively large differences in what we ultimately get come Monday/Tuesday. That will have to be closely monitored in the next 18-24 hours.
But, to the guys in Galway CC, regardless of what colour warning is finally issued, please note that it looks like a strong core of southerly/southwesterly winds will coincide with high tide on Monday evening. The same situation as the last time, so heads up and keep an eye on things. No excuses for letting the same thing happen in Salthill again.0 -
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Just to note ARPEGE 6Z would put it higher than ICON inland in general at this stage. EURO4 coming into view up to 13.00 similar to ECM for Southern counties up to 120 km/h on coasts I would think possible.
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Looking very windy / stormy on the west coast from about 10am - 10pm Monday. Marathon maybe?
OOKAY... Good to know. Thank you. Definitely marathon... Is it going to be named? meteor mentioned maybe red warning... No need to batten down any hatches as they are permanently affixed these days..
Although my largest planter went walkabout y;day. 0 -
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STORM BRENDAN HAS BEEN NAMED
Status Orange - Wind warning for Donegal, Galway, Leitrim, Mayo and Sligo
As Storm Brendan tracks to the northwest of Ireland, southerly winds veering southwesterly will reach mean speeds of 65 to 80 km/h with gusts of 110 to 130 km/h, highest in coastal areas.
There is a significant risk of coastal flooding due to the combination of high spring tides and storm surge.
Valid: 07:00 Monday 13/01/2020 to 23:59 Monday 13/01/2020
Issued: 15:00 Saturday 11/01/2020
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Status Orange - Wind warning for Wexford, Clare, Cork, Kerry, Limerick and Waterford
As Storm Brendan tracks to the northwest of Ireland, southerly winds will reach mean speeds of 65 to 80 km/h with gusts of 110 to 130 km/h, highest in coastal areas.
There is a significant risk of coastal flooding due to the combination of high spring tides and storm surge.
Valid: 07:00 Monday 13/01/2020 to 15:00 Monday 13/01/2020
Issued: 15:00 Saturday 11/01/2020
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Status Yellow - Wind warning for Dublin, Carlow, Kildare, Kilkenny, Laois, Longford, Louth, Wicklow, Offaly, Westmeath, Meath, Cavan, Monaghan, Roscommon and Tipperary
As Storm Brendan tracks to the northwest of Ireland, southerly winds veering southwesterly will reach mean speeds of 50 to 65 km/h with gusts of 90 to 110 km/h, highest in coastal areas.
There is a risk of coastal flooding due to the combination of high spring tides and storm surge.
Valid: 07:00 Monday 13/01/2020 to 23:59 Monday 13/01/2020
Issued: 15:00 Saturday 11/01/2020
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