Daily Report for 12th November 2009

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 7.7 °C (+2.2) 08:00 5.9 °C (-0.2) 11.2 °C (+5.7), 2015 3.1 °C (-2.4), 2019
Maximum Temperature 13.3 °C (+3.1) 19:10 11.2 °C (+0.1) 15.5 °C (+5.3), 2011 7.7 °C (-2.5), 2017
Mean Temperature 11.1 °C (+2.6) 8.5 °C (-0.0) 13.5 °C, 2015 5.8 °C, 2019
Minimum Humidity 83% 19:10 77% 88%, 2011 63%, 2017
Maximum Humidity 98% 05:53 96% 98%, 2009 82%, 2016
Mean Humidity 93% 89% 94%, 2011 78%, 2016
Minimum Pressure 997 hPa 21:38 995 hPa 1021 hPa, 2013 987 hPa, 2010
Maximum Pressure 1003 hPa 10:08 1005 hPa 1033 hPa, 2013 995 hPa, 2010
Mean Pressure 1000 hPa 1000 hPa 1026 hPa, 2013 991 hPa, 2010
Mean Wind Speed 5.5 mph (+0.9) 4.1 mph (-0.5) 7.9 mph, 2010 2.8 mph, 2013
Maximum Wind Speed 11.5 mph 10.3 mph 20.4 mph, 2010 8.5 mph, 2013
Maximum Gust 17.0 mph 20:46 14.7 mph 33.7 mph, 2010 12.8 mph, 2013
Mean Wind Direction S
Rainfall 9.0 mm 40.7 mm (182%) 10.5 mm, 2016
Maximum Hourly Rain 4.6 mm 21:11 4.6 mm, 2009
Maximum 10-min Rain n/a 20:56 2.8, 2014
Maximum Rain Rate n/a 20:51 54, 2014
Minimum Dew Point 7.4 °C 07:33 4.6 °C 10.0 °C, 2011 -0.2 °C, 2017
Maximum Dew Point 12.0 °C 20:51 9.1 °C 13.9 °C, 2011 5.6 °C, 2019
Mean Dew Point 10.0 °C 6.7 °C 12.4 °C, 2011 3.0 °C, 2017
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 7.7 °C 6.4 °C 11.3 °C, 2011 3.1 °C, 2019
Day Maximum (09-21) 13.3 °C 11.2 °C 15.5 °C, 2011 7.7 °C, 2017
Max 10m Temp Rise n/a 19:10 0.5 °C 0.7, 2011 0.2, 2010
Max 1hr Temp Rise n/a 19:10 1.2 °C 2.2, 2018 0.6, 2011
Max 1hr Hum Rise n/a 20:00 5% 14, 2019 2, 2011
Max 10m Temp Fall n/a 19:19 0.5 °C 0.7, 2013 0.2, 2010
Max 1hr Temp Fall n/a 20:00 1.2 °C 2.4, 2013 0.5, 2012
Max 1hr Hum Fall n/a 19:10 9% 10, 2017 1, 2016
Max 10m Wind Speed 9.0 mph 15:50 8.3 mph 13.5 mph, 2019 6.0 mph, 2013
Minimum Feels-like 6.3 °C 07:55 4.4 °C 12.3 °C, 2015 -1.4 °C, 2019
Maximum Feels-like 31.9 °C 19:10 13.6 °C 31.9 °C, 2009 6.9 °C, 2019
Mean Feels-like 12.2 °C 8.5 °C 15.8 °C, 2011 2.4 °C, 2019
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 5.6 °C (+0.9) 5.3 °C (+0.4) 8.2 °C (+3.5), 2013 1.7 °C (-3.0), 2010
Humidity Range 15% 20% 31%, 2017 8%, 2016
Pressure Range 6 hPa 10 hPa 13 hPa, 2017 5 hPa, 2019
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 3 [37%]29 hrs (102%) [29%] 4.5 [56%], 2017 0 [0%], 2012
Wet Hours 5
[Mean rain rate: 1.8 mm/h]
28 hrs (111%) [9.7%] 12, 2016 0, 2011
Cloud Cover not available
Events None
Comments 17-22 Moderate Rain (18, 20-21 Heavy)
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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