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stormchaser1

Return for the Atlantic Lows [Next week}

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nothing really noteworthy. :wallbash::wallbash:

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-9mb since 5pm today when started raining and current pressure 997.

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winds have been getting up alll night here. 40 mph top speed so far. averging around 35 mph at the moment

Hebrides

Gale warning 1539 Sat 05 May

Southwesterly gale force 8 imminent, increasing storm force 10 soon

Shipping forecast 0015 Sun 06 May

Wind Mainly west or southwest gale 8 to storm 10 decreasing 5 or 6.

Sea State High or very high decreasing moderate or rough.

Weather Rain or showers.

Visibility Moderate or poor becoming good.

*gulp* A week ago I wouldnt have thought we be getting winds like this!

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Morning everyone

Latest Buoy report from K7

993.6mb

-6.3mb

falling rapidly

=====================

K5 Buoy

steady at 989.0

Nigel

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Wednesday and Thursday looks interesting , another Low system moving from West to East ,

Nigel

Looks like there could be a very strong jet stream on Thursday too

Nigel

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K7 Buoy update

pressure= 987.0

-4.4mb falling rapidly

wave height= 2.0m

wave height= 6.6ft

air temp= 9.9c

water temp= 9.3c

Nigel

nigel

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Wednesday and Thursday looks interesting , another Low system moving from West to East ,

Nigel

Looks like there could be a very strong jet stream on Thursday too

Nigel

Nigel, is this unusual for this time of year? What are the implications of a strong jet stream?

Trying to learn here :)

PS Where is Mondy?

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Morning RoisinD

This abstract is taken from a book called HOW TO IDENTIFY WEATHER [COLLINS] BY STORM DUNLOP

Very good book i recommend this one to anyone,

anyway

The high- speed bands of wind that are tje jet streams have an important influence on the development of weather systems. Particularly the growth, motion and decay of depressions. Although often invisible the jets sometimes marked by a readily recogizable pattern of clouds

The jet streams that concern u here are the strong westerly winds that lie at the top of the troposphere, close to where there are breksin the level of the tropopause, the inversion at the base of the stratosphere. These breaks occur near major fronts, particulary near the polar front, across which there is a marked temperature contrast and on which most depressions form.

Jet stream clouds are generally forms of Cirrus [because of the low temperatures that prevail at their height], and the clouds are often elongated along the lenght of the jet, thus appearing as cirrus radiatus. But jet streams are also regions of extremely high wind shear between the jet itself and the surrounding, slower moving air, so the cirrus often occurs in the form of billows [cirrus undulatus], which run at right- anlgles ti the main direction of flow.

As mentioned, jet streasms have a profound effect on the development of depressions, and often lie in an S- Shaped curve above the main central region of a depression. The different directions in which the clouds are moving at different heights is an excellent indicator of an approaching [and receeding] depression.

A jet often lies at the forward edge of the advancing wedge of warm air, apporx parallel to the warm front. At high levels the wind veers [in the northern hemisphere], relative to the lower wind. This leads to the formation of crossed winds: winds at high and low levels being roughly at right- angles to one another. This is a classic sign of an approaching warm front. At low levels, cumulus clouds [often cumulus humulis] may be carried along by a southerly wind ahead of the surface front, while the high jet- stream cirrus fibratus, cirrus uncinus, and cirrostratus fibratus] may be seen streaming away, perhaps towards the east. When the speed of the jet stream is particularly high, their may be a dramatic change in direction close to the jet streamlevel.

The same sort of change in wind directions occurs with the clouds at the actual warm front: the winds carrying the middle level altocumulus and altostratus are veered relative to the nimbostratus, stratocumulus, or other low clouds. Similarly, the wind veers yet again between the middle levels and the higher jet stream

A similar change, but in the opposite direction, occurs in the region of the cold front, where again the jet stream is roughtly parallel to the front. How the wind backs and increases with increasing height. The low clouds may be borne on a northwesterly wind, while the high cirrus races away to the northeast, carried by a southwesterly jet.

Hope this helps

Nigel

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Wednesday low system courtesy of weather on line

Nigel

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Many thanks Nigel. Have read it and will study it in depth later. Some of it is starting to make sense :)

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Wind speed land

scotland:

north: Wick 52mph

west: South Uist 56mph

south: Glen ogle 60mph

east: Rosehearty 51mph

england:

north: Albemarle 47mph

west: Leek thorncliffe 30mph

south: Solent 23mph

east: Luton Airport 31mph

wales:

north: Capel Curig 25mph

west: Aberporth 15mph

south: Mumbles Head 33mph

east: Shawbury 28mph

ireland:

north: Malin Head 41mph

west: Belmullet 29mph

south: Roches Point 15mph

east: Dublin Airport 22mph

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Strong/gale force winds in Scotland today looking at xc gusting to 60mph.

As for the rest of the week lows look to be taking quite a S-ly track with strong winds in the south with plenty of rain to come too not as we`ve had much yet this morning very little infact.

http://85.214.49.20/pics/brack1a.gif

http://85.214.49.20/pics/brack2a.gif

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Jeez, it's a bit windy up here :good:

LOC_20070506_0900.png

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Jeez, it's a bit windy up here :good:

I thought you would only class those winds as a slight breeze Mondy. 8)

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notched up 54 mph since I was last on. some gud webcam views courtsey of this website on the isle of lewis http://www.gm7pbb.co.uk/

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I thought you would only class those winds as a slight breeze Mondy. :good:

Ha! Been a long time since we've had big gusts like this, that a mere breeze is classed as a full-blown gale 8)

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Ha! Been a long time since we've had big gusts like this, that a mere breeze is classed as a full-blown gale :good:

yup hasnt been this windy for a few months!

The general synopsis at 0700

Low Hebrides 984 expected 100 miles north of Viking 982 by 0700 tomorrow. Atlantic low 988, moving slowly east, expected 130 miles west of Rockall 991 by same time

Sea area gale warnings, issued by the Met Office, on behalf of the Maritime and Coastguard Agency.

Last updated on Sunday 06 May 2007 at 1024.

All gale warnings currently in force

Viking, issued on Saturday 05 May 2007 at 2130

Southerly severe gale force 9 expected soon

North Utsire, issued on Saturday 05 May 2007 at 2130

Southerly severe gale force 9 expected soon

South Utsire, issued on Saturday 05 May 2007 at 1539

Southerly gale force 8 expected later

Forties, issued on Saturday 05 May 2007 at 2130

Southwesterly severe gale force 9 expected later

Cromarty, issued on Saturday 05 May 2007 at 2130

Southwesterly severe gale force 9 expected soon

Forth, issued on Saturday 05 May 2007 at 2130

Southwesterly severe gale force 9 expected soon

Rockall, issued on Sunday 06 May 2007 at 0318

Storm force 10 veering westerly and decreasing gale force 8 imminent

Malin, issued on Sunday 06 May 2007 at 0318

Storm force 10 veering westerly and decreasing gale force 8 soon

Hebrides, issued on Sunday 06 May 2007 at 0318

Storm force 10 veering westerly and decreasing gale force 8 soon

Bailey, issued on Sunday 06 May 2007 at 0318

Severe gale force 9 veering westerly and decreasing gale force 8 imminent

Fair Isle, issued on Saturday 05 May 2007 at 2130

Southwesterly gale force 8 increasing severe gale force 9 soon

Faeroes, issued on Saturday 05 May 2007 at 1539

Northeasterly gale force 8 expected soon

Southeast Iceland, issued on Saturday 05 May 2007 at 1539

Gale force 8 backing northeasterly imminent

from http://www.metoffice.gov.uk/weather/marine...g_forecast.html

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Ha! Been a long time since we've had big gusts like this, that a mere breeze is classed as a full-blown gale :good:

We are gusting 30mph for the first time in over a month aswell, not used to this, stuff is blowing over in the garden.

Looking at the charts I doubt if I will see significant rain, in fact I will be lucky to get 10mm if any, on the other hand you will get a soaking and Scotland will be a green and pleasant land 8)

Regards,

Russ

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Afternoon everyone

Hope your enjoying the windy conditions up there in Scotland.. Its been breezy down here in the North but not as bad, will update late for Wednesday and Thursdays Low

Nigel

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thanks nigel!

yeah been enjoying the winds

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Quick update for Thursday ,

Looks like the wind will mainly affect the coast lines

nigel

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