Net-weather Alert 00091: 18th/19th June 2005

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WEATHER ALERT

Category: Level 3 Warning

Weather type: Thunderstorms and Torrential Downpours

Affecting: England, Wales and Southern Scotland

Time and Date Valid For: 12.00noon Saturday 18th June - 23.59 Sunday 19th June 2005.

Time Of Issue: 20.25 Friday 17th June

A hot and humid weekend lies ahead for many parts thanks to high pressure to our east and a slack Southerly flow. As this area of high pressure begins to slip eastwards and away from the UK, pressure will begin to fall. In addition, a cold front associated with an Atlantic low will begin to move eastwards later in the weekend.

This transition could well cause thunderstorms to develop as early as Saturday afternoon across parts of North Wales, Northwest England, and into Central and Southern areas of Scotland. Generally only isolated storms are currently expected to develop, but those that do could well be very heavy with torrential rain and hail a possibility along with gusty winds. Current model indications show potential rainfall totals of over 30mm/hour so there is the scope for some torrential downpours and flash flooding in places.

Risk map for Saturday

On Sunday as the cold front begins to move in from from the west then there looks to be a risk of more widespread storms developing as we go through the day, especially as temperatures soar to over 30C in the east. Main areas at risk of seeing some severe storm activity on Sunday include Wales, Northern England, the Midlands and later on in the day Eastern England. Once again, torrential downpours giving flash flooding, hail and gusty winds are likely around these storms.

Risk map for Sunday

Monday sees a risk of further storms in the southeast, but this will be looked at further during the weekend.

As always, please stayed tuned to Net-Weather for further updates and the release of possible flash alerts during the weekend.

Confidence Level: 80%

Note: This alert should be considered a guide and we strongly recommend you stay tuned to the Met-Office for further warnings and updates.

Please note, that this alert is covered by the net-weather terms and conditions of use, which are viewable here

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WEATHER ALERT UPDATE

Category: Level 3 Warning

Weather type: Thunderstorms and Torrential Downpours

Affecting: England, Wales Northern Ireland and Scotland

Time and Date Valid For: 00.00 - 23.59 Sunday 19th June 2005.

Time Of Update: 21.50 Saturday 17th June

This is an update to the alert issued yesterday.

A hot and humid weekend continues for many parts thanks to high pressure to our east and a slack southerly flow. As this area of high pressure continues to slip eastwards and away from the UK, pressure will begin to fall. In addition, a cold front associated with an Atlantic low will begin to move eastwards during Sunday.

On Saturday night there will be an increasing risk of mostly isolated thunderstorms breaking out over Northern Ireland and Scotland. Some showers could be very heavy with torrential downpours leading to flash flooding.

During Sunday as the cold front begins to move in from from the west then there looks to be a risk of widespread storms developing elsewhere as we go through the day, especially as temperatures soar to over 30C in the east. Main areas at risk of seeing some severe storm activity on Sunday look to include Wales, Northern England, the Midlands and later on in the day Eastern England. Once again, torrential downpours giving flash flooding, hail and gusty winds are likely around these storms.

Risk map for Sunday

Monday sees a risk of further storms in the southeast, but this will be looked at further later on Sunday.

As always, please stayed tuned to Net-Weather for further updates and the release of possible flash alerts during the weekend.

Confidence Level: 80%

Note: This alert should be considered a guide and we strongly recommend you stay tuned to the Met-Office for further warnings and updates.

Please note, that this alert is covered by the net-weather terms and conditions of use, which are viewable here