Storm Katie

[TomDav]

AROME 1.3km simulated satellite imagery for 0600 with an eye-like feature over central southern counties

[stevofunnelcl]

Good one from Matthew Hugo - here she comes !!

 

[Evening thunder]

Wow that looks like a real satellite image.

 

Euro4 looks a bit pokey, with a tight pressure squeeze perhaps suggesting a brief period of very strong westerlies even for more south western parts:
 

http://expert-images.weatheronline.co.uk/daten/proficharts/en/euro4/2016/03/27/basis12/ukuk/ismh/16032803_2712.gif

 

Not sure how accurate it is compared to other models in these situations though.

No idea why the first image link won't embed like the rest... The URL is virtually the same?

Edited March 27, 2016 by Evening thunder

[Nick F]

Katie's position at 19z UTC (20z BST), also airmass imagery shows dry air intrusion of the jet running into the classic T shape of a low undergoing rapid deepening, with a hook on the rear side of the cloud head.

 

[Nouska]

Wow! that air is dry -

Water vapour loop.

http://brunnur.vedur.is/myndir/seviri/2016/03/27/seviri_eurnat_wv6-2.html#

Coastal gusts over Brest already very impressive.

Edited March 27, 2016 by Nouska

[Mapantz]

Pressure falling quickly here, now. There's plenty of rain too!

[dragon falls]

My weather station is showing 973.5 and still droping rain getting heavier here now.

[Mapantz]

16 minutes ago, dragon falls said:

My weather station is showing 973.5 and still droping rain getting heavier here now.

I think you might need to recalibrate, it should be circa 988hPa

[Fitzwis]

Wind really starting to pick up down here now. I've just read an unconfirmed report of a gust to 91mph in Camaret, Brittany at 22:00 ... can someone please verify?

Edited March 27, 2016 by Fitzwis

[Fitzwis]

1 hour ago, Nouska said:

Wow! that air is dry -

Water vapour loop.

http://brunnur.vedur.is/myndir/seviri/2016/03/27/seviri_eurnat_wv6-2.html#

Coastal gusts over Brest already very impressive.

There it is, right there - 146kph 

[Daniel*]

This has been posted in SE regional of relevance in here. Storm Katie might have a Katie Hopkins flavour. 

 

[Mapantz]

Latest top 20 gusts:

 

Just had 38mph here.

[paul_montague]

Getting a bit nasty here.

[Nick F]

37 minutes ago, Fitzwis said:

Wind really starting to pick up down here now. I've just read an unconfirmed report of a gust to 91mph in Cameret, Brittany at 22:00 ... can someone please verify?

Can't verify that, though UKMet on Twitter stating gusts up to 83mph over Brittany, weather online showing gusts of 80mph at 23z at Groix and Ushant islands off Brittany.

UKMet Buoy 620501 - E1 off south coast of Cornwall showing showing quite large pressure falls in last few hours, 986mb to 982mb in just an hour between 21z and 22z 

http://www.ndbc.noaa.gov/station_page.php?station=62050

The Sevenstones Lightship off western Cornwall was probably bang in the centre of Katie at 21z, with 977mb

http://www.ndbc.noaa.gov/station_page.php?station=62107

12z GFS was not deep enough, so more deepening than forecast?

18z GFS showing 80mph gusts for central E Channel from midnight, so IOW could see some destructive gusts, 60-70mph inland damaging gusts locally with exposure for the SE and EA in early hours

 

impressive cloud head with hook on recent airmass imagery, could see sting-jet like winds coming to the surface in the dry slot wrapping in from the west.

Edited March 27, 2016 by Nick F

[Nouska]

30 minutes ago, Fitzwis said:

Wind really starting to pick up down here now. I've just read an unconfirmed report of a gust to 91mph in Cameret, Brittany at 22:00 ... can someone please verify?

Up to 150 KPH gust on midnight obs.

http://www.meteociel.com/temps-reel/obs_villes.php?code2=7104&jour2=28&mois2=2&annee2=2016&envoyer=OK

 

[knocker]

It was 979mb here at 21Z

[Evening thunder]

Really quite stormy out, just had 56mph here in an east Devon valley! which is the second strongest gust I've recorded in my records (March the 9th this year saw 59mph from the NNW). Also the stream is flooding our road a bit.

Definitely seems more intense/further west as nothing forecast winds this strong from the south here!
 

 

[Mapantz]

9 minutes ago, Evening thunder said:

Really quite stormy out, just had 56mph here in an east Devon valley! which is the second strongest gust I've recorded in my records (March the 9th this year saw 59mph from the NNW). Also the stream is flooding our road a bit.

Definitely seems more intense/further west as nothing forecast winds this strong from the south here!
 

 

It's getting pretty rough here, now. I imagine its fun down on the coast. Darn Purbeck hills!

Currently at 984.42hPa -3.60 mb/hr

Edited March 27, 2016 by Mapantz

[Wivenswold]

She appears to have bottomed-out at 976 and is now 977 centred just off the coast at Land's End.

 

http://meteocentre.com/analyses/map.php?date=2016032722&size=large&lang=en&map=eur_full&area=eur

 

 

[Fitzwis]

Warning level red just issued for the extreme North of our shipping area 

http://www.gov.je/Weather/Pages/warnings.aspx

 

Edited March 27, 2016 by Fitzwis

[alexisj9]

1 minute ago, Wivenswold said:

She appears to have bottomed-out at 976 and is now 977 centred just off the coast at Land's End.

 

http://meteocentre.com/analyses/map.php?date=2016032722&size=large&lang=en&map=eur_full&area=eur

 

 

OOh I hope you are right, don't need it to keep deepening.

[Mapantz]

2 minutes ago, Wivenswold said:

She appears to have bottomed-out at 976 and is now 977 centred just off the coast at Land's End.

 

http://meteocentre.com/analyses/map.php?date=2016032722&size=large&lang=en&map=eur_full&area=eur

 

 

975 at Scilly St Marys

The lights are flickering here.. not often that happens.   

[Evening thunder]

Just now, Mapantz said:

It's getting pretty rough here, now. I imagine its fun down on the coast. Darn Purbeck hills!

Yes the Sidmouth webcam looked quite good! Would be a bit hairy on the tree lined roads though..

I guess it may get stronger for you as you were meant to be more in the firing line

[Mapantz]

69mph at Portland. There's been a succession of nasty gusts here, 43mph so far.

[Singularity]

  

18z ARPEGE is a tad stronger than the 12z especially for the Bristol area. A tiny patch of 140 kph there I think which is 87 mph.

The whole of that area under the purple colours has gusts to 68 mph and above. Such strong gusts make it as far as Reading for around 8 am.

As Katie exits the UK, the southern reaches of the North Sea become a nightmare.