MONTHLY CLIMATOLOGICAL SUMMARY for MAY. 2000 NAME: Ferryhill CITY: Ferryhill STATE: Co. Durham ELEV: 394 feet LAT: 54deg 41min N LONG: 1deg 33min W TEMPERATURE (°C), RAIN (mm), WIND SPEED (mph) HEAT COOL AVG MEAN DEG DEG WIND DOM DAY TEMP HIGH TIME LOW TIME DAYS DAYS RAIN SPEED HIGH TIME DIR ------------------------------------------------------------------------------------ 1 12.5 17.6 14:30 9.3 6:30 5.7 0.0 0.0 0.0 0.0 0:30 --- 2 10.6 15.3 15:00 7.9 6:00 7.7 0.0 0.0 0.0 0.0 0:30 --- 3 8.2 9.9 16:00 6.6 8:00 10.1 0.0 0.0 0.0 0.0 0:30 --- 4 8.0 10.7 15:30 6.4 6:00 10.3 0.0 0.0 0.0 0.0 0:30 --- 5 7.9 10.0 15:00 6.6 1:30 10.4 0.0 0.0 0.0 0.0 0:30 --- 6 8.8 11.1 14:30 7.2 0:30 9.5 0.0 0.0 0.0 0.0 0:30 --- 7 11.4 16.3 15:00 7.9 3:30 6.9 0.0 0.0 0.0 0.0 0:30 --- 8 10.7 16.0 16:30 7.1 6:30 7.6 0.0 0.0 0.0 0.0 0:30 --- 9 12.8 18.7 17:30 10.0 6:00 5.4 0.0 0.0 0.0 0.0 0:30 --- 10 9.6 12.5 0:30 8.4 24:00 8.7 0.0 0.0 0.0 0.0 0:30 --- 11 9.1 10.9 16:30 7.9 2:30 9.2 0.0 0.0 0.0 0.0 0:30 --- 12 11.2 15.7 15:30 8.0 0:30 7.1 0.0 0.0 0.0 0.0 0:30 --- 13 12.8 18.1 19:00 7.8 6:00 5.5 0.0 0.0 0.0 0.0 0:30 --- 14 16.5 24.1 15:30 9.2 5:00 3.4 1.6 0.0 0.0 0.0 0:30 --- 15 17.8 24.4 16:00 13.2 6:30 1.9 1.5 0.0 0.0 0.0 0:30 --- 16 11.9 14.7 0:30 10.4 6:00 2.0 0.0 0.0 0.0 0.0 0:30 --- 17 18 19 20 21 22 23 24 25 10.6 13.4 17:00 6.7 24:00 5.2 0.0 28.0 0.0 0.0 8:16 --- 26 9.0 12.6 13:30 4.7 5:30 9.2 0.0 8.6 0.0 0.0 0:30 --- 27 9.1 13.5 16:00 5.4 7:30 9.2 0.0 8.8 0.0 0.0 0:30 --- 28 8.6 13.3 15:00 4.4 3:30 9.7 0.0 2.4 0.0 0.0 0:30 --- 29 9.6 14.3 15:00 6.6 5:00 8.6 0.0 2.6 0.0 0.0 0:30 --- 30 9.9 15.1 17:30 5.4 6:00 8.4 0.0 0.4 0.0 0.0 0:30 --- 31 12.0 17.6 17:30 6.7 5:30 6.2 0.0 0.8 0.0 0.0 0:30 --- ------------------------------------------------------------------------------------- 10.8 24.4 15 4.4 28 167.9 3.1 51.6 0.0 0.0 1 --- (+0.8) (99%) Max >= 32.0: 0 Max <= 0.0: 0 Min <= 0.0: 0 Min <= -18.0: 0 Max Rain: 28.00 ON 25/05/00 Days of Rain: 7 (> .2 mm) 5 (> 2 mm) 1 (> 20 mm) Heat Base: 18.3 Cool Base: 18.3 Method: Integration Warm and generally very dry first half and then very wet and cool second half. The wettest May since 1994 (82.5 mm), but particularly wet in the SE and dry in the W and N. A thunderstorm dumped 66 mm of rain in one hour on Bracknell on the afternoon of the 7th; there were also 15 mm hailstones. The rainfall rate was probably higher in surrounding locations (the hour rainfall record rate for the Uk was 92 mm at Maidenhead in July 1901). It was reported that the sound of the thunder was drowned out by the noise of the hail. It was very sunny in the NW; Tiree had 318 hours of sunshine, the most since 1975. The SW was the dullest part of the country. The month as a whole was slightly warmer than average, thanks to a very warm first half. Hottest day was the 14th (28C in London).