Daily Report for 18th January 2013

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature -2.1 °C (-4.5) 10:43 2.4 °C (-0.0) 7.6 °C (+5.2), 2014 -3.3 °C (-5.7), 2017
Maximum Temperature 1.8 °C (-5.2) 00:08 6.3 °C (-0.7) 11.9 °C (+4.9), 2012 1.8 °C (-5.2), 2013
Mean Temperature -0.8 °C (-4.8) 4.4 °C (-0.4) 9.3 °C, 2012 -0.8 °C, 2013
Minimum Humidity 71% 01:36 80% 95%, 2010 50%, 2009
Maximum Humidity 90% 13:24 95% 98%, 2010 82%, 2017
Mean Humidity 83% 89% 98%, 2010 70%, 2017
Minimum Pressure 997 hPa 23:30 1016 hPa 1036 hPa, 2017 989 hPa, 2014
Maximum Pressure 1012 hPa 00:30 1023 hPa 1039 hPa, 2017 993 hPa, 2014
Mean Pressure 1003 hPa 1020 hPa 1038 hPa, 2017 990 hPa, 2014
Mean Wind Speed 6.5 mph (+1.3) 4.0 mph (-1.2) 10.4 mph, 2018 0.2 mph, 2017
Maximum Wind Speed 12.5 mph 07:00 10.6 mph 31.0 mph, 2018 3.8 mph, 2017
Maximum Gust 17.5 mph 13:09 14.9 mph 47.2 mph, 2018 5.2 mph, 2017
Mean Wind Direction SE
Rainfall / Snow-melt approx. 5.0 mm 16.4 mm (51%) 7.6 mm, 2011
Maximum Hourly Rain n/a 3, 2009
Maximum 10-min Rain n/a 1.1, 2011
Maximum Rain Rate n/a 10, 2011
Minimum Dew Point -5.0 °C 08:23 0.5 °C 4.8 °C, 2014 -6.8 °C, 2017
Maximum Dew Point -2.3 °C 23:25 4.8 °C 11.1 °C, 2012 -2.3 °C, 2013
Mean Dew Point -3.3 °C 2.7 °C 8.4 °C, 2012 -5.0 °C, 2017
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * -1.7 °C * 08:40 3.1 °C 6.8 °C, 2014 -3.3 °C, 2017
Day Maximum (09-21) * -0.8 °C * 20:55 5.8 °C 11.9 °C, 2012 -0.8 °C, 2013
Max 10m Temp Rise 0.1 °C 11:07 0.3 °C 0.9 °C, 2019 0.1 °C, 2013
Max 1hr Temp Rise 0.4 °C 20:51 0.8 °C 3.8 °C, 2019 0.4 °C, 2013
Max 1hr Hum Rise 6% 09:57 4% 6%, 2013 2%, 2010
Max 10m Temp Fall 0.2 °C 08:15 0.2 °C 0.4 °C, 2017 0.1 °C, 2012
Max 1hr Temp Fall 0.9 °C 07:11 0.8 °C 1.8 °C, 2018 0.3 °C, 2012
Max 1hr Hum Fall 3% 15:59 5% 15%, 2018 0%, 2010
Max 10m Wind Speed 10.3 mph 07:49 7.9 mph 23.3 mph, 2018 2.7 mph, 2017
Minimum Feels-like -8.7 °C 13:09 -0.6 °C 4.7 °C, 2014 -8.7 °C, 2013
Maximum Feels-like -0.4 °C 00:24 6.2 °C 13.7 °C, 2012 -0.4 °C, 2013
Mean Feels-like -5.3 °C 2.9 °C 8.9 °C, 2012 -5.3 °C, 2013
Air-frost Hrs 18 hrs 4 hrs 18 hrs, 2013 0 hrs, 2010
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 3.9 °C (-0.7) 3.9 °C (-0.7) 8.3 °C (+3.7), 2019 2.2 °C (-2.4), 2014
Humidity Range 19% 15% 44%, 2009 3%, 2010
Pressure Range 15 hPa 7 hPa 16 hPa, 2018 1 hPa, 2010
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]20 hrs (75%) [15%] 7.5 [99%], 2017 0 [0%], 2012
Wet Hours 10
[Mean rain rate: 0.5 mm/h]
26 hrs (67%) [6%] 10, 2013 , 2009
Cloud Cover Overcast
Events Snowfall: ~5 cm
Air Frost
Comments 09- Light Snow (15- broken Slight)
Extra Comments Snow depth at 19z was approx. 4cm. Radar suggests approx 5mm.
Issues None known
Observer Absent? No
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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Webcam Summary of Cloud Conditions

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