It looks as though the depression is moving slightly faster than first though which means that the strongest winds are now likely to hit the islands from around midday Tuesday through to early evening.
The winds are still predicted to be in the range of 35 to 50 mph, gusting 55 to 80mph.
Remember to put any loose garden furniture, or things like trampolines, in a safe place where they won't get caught by the wind!
One positive thing; Once this system has moved away Northeast, there is a high pressure system moving in which should give us some nice weather for a while.
Updated at 10:15 BST:
As Richard has spotted; The gusts are reaching over 50 mph here at the moment but the highest winds are still to come I think. The barometric pressure is still falling, although the drop has slowed. Looking at the satellite images there is a clear "tail" to this depression out to the West of the Islands and that's where the higher winds are.
This afternoon I think we can expect to see gusts in the range of 70 mph with an average speed reaching 50 mph at times.
More later.........
Updated at 18:00 BST:
Well the depression has now past to the Northeast, the pressure is rising and the wind is easing.
The highest average winds were 63 mph with the highest gust at 74 mph, these occured at 12:06 BST.
Now the pressure should rise quite rapidly as a new High moves in from the Southwest to give us a more settled spell over the coming days.
Monday, 7 September 2009
Sunday, 6 September 2009
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High Risk of Severe Gale or Storm Force conditions on Tuesday
There's a high risk of severe gales with strong gusts through Tuesday (8th September 2009) effecting the Western Isles & West Highlands.
Currently Hebrides Weather Forecast is predicting that Southerly winds will increase through Tuesday, reaching speeds of up to 51 mph by the evening.
Winds should reduce after midnight, reaching around 36mph by morning.
The UK Met Office has issued a Weather Advisory for gusts of up to 70 to 80 mph and heavy rain, with up to 40mm falling in places. This advisory could be upgraded on Sunday night or through Monday.
This storm is being caused by a deepening Low pressure area out in the Atlantic. It is currently at 1004mb but is expected to drop to 980mb as it passes to the Northwest of Scotland and the tightly packed isobars will cause the wind speeds to increase up to, or slightly over, Storm Force on the Beaufort Scale.
The current pressure charts indicate that the strongest winds will occur between 21:00 and midnight on Tuesday evening.
Stay tuned for further updates (as they say...).
Update 00:32 7th Sept:
The 18:00 Extended Outlook for the Shipping Forecast areas from the UK Met Office states the following: Gales or severe gales are expected to affect much of the area on Tuesday evening with storm force winds north of 55 deg N and possibility of the winds reaching violent storm for a time. The winds mostly from the southwest veering west but north or northeast backing northwest over Southeast Iceland.
Currently Hebrides Weather Forecast is predicting that Southerly winds will increase through Tuesday, reaching speeds of up to 51 mph by the evening.
Winds should reduce after midnight, reaching around 36mph by morning.
The UK Met Office has issued a Weather Advisory for gusts of up to 70 to 80 mph and heavy rain, with up to 40mm falling in places. This advisory could be upgraded on Sunday night or through Monday.
This storm is being caused by a deepening Low pressure area out in the Atlantic. It is currently at 1004mb but is expected to drop to 980mb as it passes to the Northwest of Scotland and the tightly packed isobars will cause the wind speeds to increase up to, or slightly over, Storm Force on the Beaufort Scale.
The current pressure charts indicate that the strongest winds will occur between 21:00 and midnight on Tuesday evening.
Stay tuned for further updates (as they say...).
Update 00:32 7th Sept:
The 18:00 Extended Outlook for the Shipping Forecast areas from the UK Met Office states the following: Gales or severe gales are expected to affect much of the area on Tuesday evening with storm force winds north of 55 deg N and possibility of the winds reaching violent storm for a time. The winds mostly from the southwest veering west but north or northeast backing northwest over Southeast Iceland.
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