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uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged. |
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The general pressure situation for the period 1st to 10th March 2004 has
LP to the N of the country to parts of Scandinavia, so that generally W winds blow across Scotland Over the southern half of the country winds are expected to be generally light and variable as the Azores HP extends a small ridge to just off SW England. A weak belt of HP stretches from East Anglia across the North Sea towards N Germany. A weak ridge stretches from off Northern Ireland to S Greenland. A LP area lies near Biscay to S France with the possibility of generally NE or E winds near W France and the Channel coasts. It is expected to be generally dryer in central and southern areas of the country but more showers are expected over Scotland in the generally W'erly winds. London's temperature trend is unsteady from 1st to about 3rd but then rises to about 5th,. the curve then falls to about 7th, rises to about 8th, then falls to the end of the period. Small cold dips in the curve are expected near 1st, 3rd and 7th. Small warm peaks are expected near 2nd, 5th and 8th. The ground minimum is expected to be low on 3rd falling to its lowest point on 4th, then rising on 5th. Glasgow's temperature trend shows a rise from 1st to about 5th then a small drop near the 6th and 7th before rising again to about 9th, then falling on the last day of the period. Small cold dips in the curve are expected near 6th and 7th and 10th. Small warm peaks are expected near 5th and 9th. Strong wind days are expected near 1st March - off SW England ( small wave approaching) near 2nd March - N and W Scotland and SW Norway (Iceland LP with trough to SW Norway) near 3rd March - NW Scotland (LP to N of Scotland) also W Biscay (LP area W France) near 4th March - W Scotland (LP to NW of Scotland) near 6th March - Brittany (LP moving away E'wards) near 7th and 8th March - off SW Britain. (LP coming into W of country) near 9th March - Biscay and W of Ireland ( Wave off SW England) near 10th March - North Sea and SW England (front side and backside of depression over Britain) General run of weather over the period starts with a belt of LP running W/E across the top of Scotland and a wave coming into SW'ern areas. The Azores HP drifts E'wards along the Channel on 2nd At the same time, an area of LP develops over Spain and SW France and lies near Biscay on 3rd. On 4th, LP continues to cover an area off NW Scotland bringing a secondary into the SW of the country on 5th. The secondary crosses the country and lies in the North Sea on the 6th with HP coming behind it into SW districts. A new LP approaches W'ern areas from the Atlantic on 7th with a small ridge of the Azores HP into the North Sea. The LP moves into the country on 8th pushing the North Sea HP into the continent. As HP builds up N/S over the Atlantic just W of Ireland. on 9th, LP develops once again near Biscay and the SW of Britain and moves NE'wards to cover the country on 10th. This period of weather follows the general, extensive, HP situations we had at the end of February. In this present period, the HP-area stretches more or less E-W across Europe. But the signs are already there that once again LP approaches the NW of the country and the ensuing mild, cyclonic SW winds will be in force for the next period This is a shorter version of the 'Outlook', but I think, still sufficient detail for those interested. Cheers, Keith |
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