Daily Report for 20th November 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 9.2 °C (+4.7) 23:51 7.3 °C (+1.7) 10.8 °C (+6.3), 2012 -0.8 °C (-5.3), 2013
Maximum Temperature 13.8 °C (+4.1) 09:22 12.3 °C (+1.7) 13.8 °C (+4.1), 2009 4.9 °C (-4.8), 2018
Mean Temperature 12.4 °C (+4.4) 9.7 °C (+1.7) 12.4 °C, 2009 2.6 °C, 2013
Minimum Humidity 70% 00:25 73% 96%, 2011 63%, 2015
Maximum Humidity 95% 23:47 95% 98%, 2010 83%, 2016
Mean Humidity 86% 87% 98%, 2011 78%, 2015
Minimum Pressure 1007 hPa 04:39 997 hPa 1023 hPa, 2014 969 hPa, 2016
Maximum Pressure 1021 hPa 23:26 1007 hPa 1025 hPa, 2014 995 hPa, 2016
Mean Pressure 1014 hPa 1002 hPa 1024 hPa, 2014 986 hPa, 2016
Mean Wind Speed 6.1 mph (+1.5) 5.5 mph (+0.9) 8.0 mph, 2016 0.8 mph, 2011
Maximum Wind Speed 15.0 mph 13.0 mph 21.9 mph, 2016 4.5 mph, 2011
Maximum Gust 22.6 mph 02:06 18.8 mph 37.1 mph, 2016 6.0 mph, 2011
Mean Wind Direction SW
Rainfall 1.4 mm 70.9 mm (190%) 19.2 mm, 2016
Maximum Hourly Rain 0.5 mm 10:16 3.5 mm, 2016
Maximum 10-min Rain n/a 10:15 1.2, 2013
Maximum Rain Rate n/a 10:16 36, 2013
Minimum Dew Point 7.6 °C 00:20 5.3 °C 9.1 °C, 2012 -3.6 °C, 2013
Maximum Dew Point 12.7 °C 11:29 9.9 °C 12.7 °C, 2009 2.6 °C, 2018
Mean Dew Point 10.0 °C 7.4 °C 10.8 °C, 2012 0.8 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 12.7 °C * 7.9 °C 12.7 °C, 2009 -0.8 °C, 2013
Day Maximum (09-21) 13.8 °C 12.1 °C 13.8 °C, 2009 4.8 °C, 2018
Max 10m Temp Rise n/a 00:16 0.5 °C 0.5, 2019 0.2, 2010
Max 1hr Temp Rise n/a 01:35 1.2 °C 1.7, 2013 0.3, 2015
Max 1hr Hum Rise n/a 07:06 6% 8, 2012 1, 2011
Max 10m Temp Fall n/a 18:21 0.4 °C 1.8, 2013 0.2, 2014
Max 1hr Temp Fall n/a 18:21 1.1 °C 3.3, 2013 0.7, 2018
Max 1hr Hum Fall n/a 01:35 9% 10, 2013 2, 2010
Max 10m Wind Speed 12.0 mph 07:20 10.1 mph 17.4 mph, 2016 3.4 mph, 2011
Minimum Feels-like 9.8 °C 23:51 6.2 °C 11.8 °C, 2012 -5.9 °C, 2013
Maximum Feels-like 16.3 °C 13:06 14.2 °C 16.3 °C, 2009 3.2 °C, 2018
Mean Feels-like 13.7 °C 10.0 °C 13.8 °C, 2012 -0.2 °C, 2013
Air-frost Hrs 0 hrs 0 hrs 6 hrs, 2013 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 4.6 °C (-0.6) 5.0 °C (+0.0) 7.2 °C (+2.0), 2013 2.7 °C (-2.5), 2012
Humidity Range 25% 21% 28%, 2019 2%, 2011
Pressure Range 14 hPa 10 hPa 26 hPa, 2016 1 hPa, 2010
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.3 [4%]47 hrs (100%) [29%] 3 [39%], 2011 0 [0%], 2010
Wet Hours 4
[Mean rain rate: 0.3 mm/h]
52 hrs (124%) [11%] 14, 2018 0, 2010
Cloud Cover not available
Events None
Comments 06-11 Light Rain
Extra Comments
Issues ALL MONTH: Rainfall data is approximate and 10-min totals & rain rates are unavailable due to 5-min logging, but monthly sum is correct.
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 0.0 °C
Notes
Times of extremes are computed using the midpoint of the longest continuous period at that extreme value.
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 (entered with a delay of 1-10 days); 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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Wind rose