Daily Report for 20th February 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 5.6 °C (+3.5) 07:15 0.8 °C (-1.4) 10.1 °C (+8.0), 2017 -2.0 °C (-4.1), 2012
Maximum Temperature 10.9 °C (+3.3) 14:10 6.0 °C (-1.3) 17.1 °C (+9.5), 2017 4.2 °C (-3.4), 2013
Mean Temperature 8.2 °C (+3.4) 3.4 °C (-1.3) 12.6 °C, 2017 1.0 °C, 2010
Minimum Humidity 48% 14:13 67% 93%, 2011 44%, 2012
Maximum Humidity 92% 06:00 95% 98%, 2011 78%, 2012
Mean Humidity 70% 81% 95%, 2011 63%, 2012
Minimum Pressure 1029 hPa 00:44 1007 hPa 1030 hPa, 2012 995 hPa, 2010
Maximum Pressure 1032 hPa 17:22 1015 hPa 1033 hPa, 2012 998 hPa, 2010
Mean Pressure 1030 hPa 1011 hPa 1032 hPa, 2012 996 hPa, 2010
Mean Wind Speed n/a (-5.1) 0.0 mph (-5.1) 9.4, 2016 2.6, 2010
Maximum Wind Speed n/a 0.0 mph 18.7, 2016 9.2, 2010
Maximum Gust n/a 0.0 mph 31.4, 2016 12.1, 2010
Mean Wind Direction n/a
Rainfall 0.0 mm 63.6 mm (223%) 3.1 mm, 2016
Maximum Hourly Rain n/a 1.1, 2016
Maximum 10-min Rain n/a 0.4, 2015
Maximum Rain Rate n/a 1.4, 2015
Minimum Dew Point 0.0 °C 15:22 -2.2 °C 7.5 °C, 2017 -6.8 °C, 2012
Maximum Dew Point 5.2 °C 04:25 3.1 °C 12.2 °C, 2017 1.1 °C, 2012
Mean Dew Point 2.9 °C 0.7 °C 9.4 °C, 2017 -2.9 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 5.6 °C 0.9 °C 10.1 °C, 2017 -2.0 °C, 2012
Day Maximum (09-21) 10.9 °C 6.0 °C 17.1 °C, 2017 4.2 °C, 2013
Max 10m Temp Rise 0.8 °C 13:29 0.4 °C 0.8 °C, 2009 0.1 °C, 2011
Max 1hr Temp Rise 1.6 °C 14:10 0.9 °C 2.8 °C, 2012 0.3 °C, 2011
Max 1hr Hum Rise 6% 16:46 5% 13%, 2014 1%, 2011
Max 10m Temp Fall 0.7 °C 14:25 0.4 °C 0.9 °C, 2014 0.1 °C, 2011
Max 1hr Temp Fall 1.5 °C 15:09 0.9 °C 2.5 °C, 2014 0.3 °C, 2011
Max 1hr Hum Fall 21% 12:37 6% 21%, 2009 1%, 2011
Max 10m Wind Speed n/a 0.0 mph 14.3, 2016 5.7, 2010
Minimum Feels-like n/a 0.0 °C 10.3, 2017 -5.7, 2012
Maximum Feels-like n/a 0.0 °C 19.4, 2017 3.3, 2013
Mean Feels-like n/a 0.0 °C 13.6, 2017 -0.6, 2013
Air-frost Hrs 0 hrs 4 hrs 10 hrs, 2010 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 5.3 °C (-0.2) 5.2 °C (+0.1) 10.3 °C (+4.8), 2012 1.5 °C (-4.0), 2011
Humidity Range 44% 28% 44%, 2009 5%, 2011
Pressure Range 3 hPa 8 hPa 14 hPa, 2014 3 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 4.8 [52%]56 hrs (107%) [32%] 6 [65%], 2010 0 [0%], 2011
Wet Hours 0 hrs (0%) [0%] 6, 2016 , 2009
Cloud Cover not available
Events None
Comments -
Extra Comments
Issues None known
Observer Absent? No
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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