Weather Data - April 2005

April 2005
Times indicate the end of a measurement period (BST)
Maximum Temperature 19.4 ēC 30-Apr-05   10:15 AM
Minimum Temperature -1.2 ēC 09-Apr-05    6:15 AM
Mean (15 min) 9.6 ēC 1.3 from average
Mean (Max Min) 10.4 ēC 2.1 from average  (calculated from 0901 to 0900 GMT data)
Mean Max 15.1 ēC 3.0 from average  (calculated from 0901 to 0900 GMT data)
Mean Min 5.7 ēC 1.5 from average  (calculated from 0901 to 0900 GMT data)
Lowest Max 10.9 ēC 17-Apr-05
Highest Min 10.9 ēC 30-Apr-05
Air Frosts 2 3 hours of Frost duration
Maximum Station Pressure 1030 hPa 10-Apr-05    9:30 PM
Minimum Station Pressure 988 hPa 18-Apr-05    2:00 AM
Mean 1011.9 hPa
Mean of 09Z values 1012.0 hPa
Rainfall 126.6 mm 158.3% of average
Wettest 24hr 30 mm 23-Apr-05 7:15 AM
Wettest Calendar Day 30 mm 22-Apr-05 (calculated from 0901 to 0900 following day)
Rain Days ( > 0.3mm) 21 days (calculated from 0901 to 0900 GMT data)
Wet Days (>1.0mm) 16 days (calculated from 0901 to 0900 GMT data)
Wet Days (>5.0mm) 6 days (calculated from 0901 to 0900 GMT data)
Max 15min accum 2.4 mm 24-Apr-05    5:15 PM
Rain Duration 50.75 hours
Longest Dry period 3.77 days 03-Apr-05 5:30 PM 90.50 (hours)
Longest Wet period (>0.3mm / 15 mins) 5.75 hours 22-Apr-05 9:30 PM
Sunshine Hours (>30klux) 192.50 hours 113.2% of average
Max Sunshine 10.00 hours 09-Apr-05 (calculated from 0901 to 0900 following day)
Sunshine Hours (>50%) 134 hours 78.8% of average
Max Sunshine 11.00 hours 09-Apr-05 (calculated from 0901 to 0900 following day)
Brightest Calendar Day 39.3 klux 26-Apr-05 (calculated from 0901 to 0900 following day)
Sunless Days 6 days (calculated from 0901 to 0900 GMT data)
Maximum Brightness (klux) 132 klux 19-Apr-05   12:30 PM
Average Wind Speed 4.3 knots 4.9 mph
Maximum Wind Speed 19.22 knots 07-Apr-05    4:45 AM 22.1 mph
Days with wind from: (calculated from 0901 to 0900 GMT data)
Calm 6
N 1
NE 0
E 6
SE 2
S 1
SW 1
W 12
NW 1
Average RH (at 09Z) 70.1

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