Daily Report for 1st May 2012

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 10.8 °C (+4.6) 07:28 10.8 °C (+4.4) 10.8 °C (+4.6), 2012 3.0 °C (-3.2), 2013
Maximum Temperature 17.0 °C (+2.2) 17:36 17.0 °C (+2.1) 21.0 °C (+6.2), 2009 13.3 °C (-1.5), 2014
Mean Temperature 13.2 °C (+3.4) 13.2 °C (+3.2) 14.1 °C, 2009 9.6 °C, 2013
Minimum Humidity 59% 18:53 59% 72%, 2014 34%, 2013
Maximum Humidity 97% 10:18 97% 97%, 2012 66%, 2011
Mean Humidity 86% 86% 90%, 2014 52%, 2011
Minimum Pressure 1012 hPa 02:13 1012 hPa 1021 hPa, 2009 1008 hPa, 2010
Maximum Pressure 1022 hPa 23:47 1022 hPa 1027 hPa, 2013 1010 hPa, 2010
Mean Pressure 1017 hPa 1017 hPa 1024 hPa, 2013 1009 hPa, 2010
Mean Wind Speed 4.5 mph (-0.2) 4.5 mph (-0.2) 9.2 mph, 2011 1.6 mph, 2014
Maximum Wind Speed 15.4 mph 15.4 mph 18.5 mph, 2011 8.5 mph, 2014
Maximum Gust 20.8 mph 02:13 20.8 mph 27.3 mph, 2011 12.3 mph, 2014
Mean Wind Direction NNE
Rainfall 16.4 mm 16.4 mm (997%) 31.7 mm, 2010
Maximum Hourly Rain 4.6 mm 01:27 13.1 mm, 2010
Maximum 10-min Rain 1.5 mm 00:39 4.1 mm, 2010
Maximum Rain Rate 20 mm/h 00:40 60 mm/h, 2010
Minimum Dew Point 8.2 °C 20:25 8.2 °C 8.2 °C, 2012 -2.7 °C, 2013
Maximum Dew Point 13.6 °C 13:49 13.6 °C 13.6 °C, 2012 5.7 °C, 2013
Mean Dew Point 10.7 °C 10.7 °C 10.7 °C, 2012 0.8 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 10.8 °C 07:26 10.8 °C 10.8 °C, 2012 3.0 °C, 2013
Day Maximum (09-21) 17.0 °C 17:34 17.0 °C 21.0 °C, 2009 13.3 °C, 2014
Max 10m Temp Rise 0.5 °C 12:58 0.5 °C 1.6 °C, 2009 0.3 °C, 2014
Max 1hr Temp Rise 1.5 °C 13:13 1.5 °C 3.5 °C, 2009 0.7 °C, 2014
Max 1hr Hum Rise 16% 21:19 16% 16%, 2010 4%, 2014
Max 10m Temp Fall 0.5 °C 20:11 0.5 °C 0.9 °C, 2009 0.3 °C, 2014
Max 1hr Temp Fall 2.4 °C 20:44 2.4 °C 2.7 °C, 2010 0.7 °C, 2014
Max 1hr Hum Fall 12% 16:14 12% 22%, 2013 3%, 2014
Max 10m Wind Speed 9.5 mph 01:40 9.5 mph 12.9 mph, 2011 6.2 mph, 2014
Minimum Feels-like 12.2 °C 06:52 12.2 °C 12.2 °C, 2012 0.0 °C, 2013
Maximum Feels-like 19.2 °C 16:07 19.2 °C 19.2 °C, 2012 15.5 °C, 2014
Mean Feels-like 14.8 °C 14.8 °C 14.8 °C, 2012 8.9 °C, 2013
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 6.2 °C (-2.4) 6.2 °C (-2.4) 13.1 °C (+4.5), 2013 3.2 °C (-5.4), 2014
Humidity Range 38% 38% 56%, 2013 25%, 2014
Pressure Range 10 hPa 10 hPa 10 hPa, 2012 2 hPa, 2010
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 2 [15%]2 hrs (34%) [15%] 11 [82%], 2011 0 [0%], 2014
Wet Hours 8
[Mean rain rate: 2.0 mm/h]
8 hrs (620%) [33%] 13, 2014 0, 2009
Cloud Cover am: Overcast
pm: Mostly Cloudy
Events Light Thunderstorm
Comments 00-02, 04-09 Heavy Rain (0030 Thunderstorm with possible Hail)
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Notes
Times of extremes are computed using the midpoint time of the extremum (if the value persisted for >1 minute).
Cumulative anomalies are reported according to the expected value for the month-to-date rather than month-end.
Sun hrs, Wet hrs, Cloud cover and Events are based on manual equipment/observations; their reliablity is questionable and they are provided for interest only.
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Daily Graph of Conditions

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Webcam Summary of Cloud Conditions

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