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floodsYou are in: Hereford and Worcester > Features > floods > July floods - timeline Radar image of storm - Crown copyright July floods - timelineLocal weatherman Paul Damari explains how the storm developed, and why. Thursday 19 JulyLow pressure to the south-west brought warm humid air in across the two counties on the 19 July. After a fair warm day with temperatures peaking at 24C/75F thunderstorms broke out during the evening, with many locations logging 12.5mm of rain within 45 minutes or less, causing flash flooding. Overnight rain set in across both Herefordshire and Worcestershire. Friday 20 JulyThe rain became rapidly torrential and persistent from 8am until 8pm. The low pressure to the south/south-east by then giving a east/north-easterly airflow. Paul Damari The active weather front, as predicted, lodged itself through Wales, Herefordshire and Worcestershire, into Oxfordshire towards London. It was active, slow moving, with warm humid air pouring into the low pressure, feeding it. Saturday 21 JulySaturday the storm moved away, with sunshine and some light rain or drizzle in both counties, giving 2.2 mm of rainfall. Sunday 22 JulyFair through the day and rain overnight giving 2.8 mm. Total rainfall - Crown copyright RAINFALL FIGURESParts of Herefordshire into Worcestershire logged over 120 mm from 6pm on the 19 July and 8pm on the 20 July. This is 281.6% of the average July rainfall of 42.6 mm. Pershore College logged 157.4 mm with 134.8 mm of their total in a 16 hour period. The total I logged for the whole of July was 182.7 mm of rainfall, that's 428.8% of the July long term average of 42.6 mm. This made it the wettest July on record and I have been logging the weather for 50 years. Pictures of the floods This is the first time within that period where the inner rainfall bottle overflowed into the outer container - this container is there mainly for monsoon-like rains which occur abroad.听 last updated: 19/11/07 You are in: Hereford and Worcester > Features > floods > July floods - timeline |
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