Weather Advice 28 June

The overall flood risk for today is forecast as LOW, the following report is from the Meet Office:

An incursion of warm, high-humidity air across the region always provides the potential, at this time of year, for very heavy downpours and localised surface water flooding, as yesterday evening’s events in Belfast testify.

Later this morning a band of showery rain will transfer northeastwards across the region as the warm, humid airmass is slowly displaced away to the east. However, within this band of rain there is scope for some localised torrential downpours, possibly accompanied by lightning and thunder. As is so often the case there will be something of a hit ‘n miss nature to the rain, some areas seeing very little, others perhaps catching a deluge in a relatively short space of time. Should any downpours materlialise the sheer intensity of the rainfall could easily overwhelm local drainage capacity and result in temporary surface water flooding and related issues, particularly in the more urban areas where disruption to transport could arise in a very short space of time. Even in the more rural areas key access roads could fall victim to short-notice flooding. Unfortunately we can’t pinpoint the areas most at risk, even at this late stage, and thus need to alert the whole of the region to the possibility. As always the development and progression of the rainfall can (and perhaps should) be monitored via Hazard Manager or via the Met Office website rainfall at;

http://www.metoffice.gov.uk/public/weather/observations/? tab=map?=Rainfall&zoom=5& locId=310126 (Not live, please cut and paste in to your web browser)

Later this afternoon and into the evening any remaining heavy showers and thunderstorms should move off across the Pennines.

Late yesterday evening the Flood Forecasting Centre issued a revised Flood Guidance Statement (attached above) to highlight the risk from surface water flooding during tomorrow. The Met Office have also issued a Yellow Warning for rain (also attached above), valid from 0600 this morning up til midnight.

Beyond today, although continuing unsettled with further rain at times, freshening winds and cooler/fresher temperatures, no further severe weather is currently anticipated across the Northwest.

Regards,

Alan

Alan Goodman; Met Office Advisor (Civil Contingencies)

Weather Update 23 June

UPDATE: Warnings are no longer in force for the rivers Cocker, Marron and Derwent from Bassenthwaite Lake to the coast at Workington. (24/6/2012)

Flood Forecast 23 June 2012The map above shows a summery of the Flood Guidance Statement. The detail can be found by clicking on the map. Further rainfall through today and tonight is not expected to cause further significant impacts in these areas generally, although these are still possible. Below is a statement from the regional Met Office advisor. Continue reading “Weather Update 23 June”

LOW Flood Risk this weekend

Warning map 22 June 2012Today’s Flood Guidance Statement (FGS) details the flood risk across NW England through today and throughout the weekend. This stands at Amber (Medium) for all of the region except Cumbria where the FGS has stayed Yellow, based upon considerations of the likely impact of the rainfall upon the river network and of surface water impacts. The full guidance can be read by clicking on the map.
Latest forecast information to hand confirms the wettest locations liable to be inland parts of north Lancashire along with south Cumbria, especially the SW quadrant of the county. The broad belt of persistent rain is expected to begin edging slowly away northwards this afternoon with Cheshire (especially south of Chester) the least affected part of the region. Borderline as to whether the more persistent and heavier rain will be clearing the Blackpool area by early evening but no change to the strong/gale force winds forecast for exposed sections of the coastline this afternoon/evening.
Surface water now beginning to impact upon some of the region’s roads according to BBC travel news website – situation liable to deteriorate further through this afternoon.
Looking ahead into the weekend period – additional severe weather Alerts/Warnings have been issued for various parts of the region as follows;
SATURDAY:
A Yellow Warning for rain has been issued for much of Cumbria, covering the period 0000 to 0900 tomorrow. This is to allow for additional rainfall affecting the county beyond midnight tonight.
SUNDAY:
A Yellow Alert for rain has been issued for an area including Lancashire, Merseyside, Greater Manchester and Cheshire, covering the period 0000 to 1500 on Sunday. This is tied to the next weather system (briefly mentioned in an earlier communication) that is set to bring further rain across the region on Saturday evening/night. Continue reading “LOW Flood Risk this weekend”