Daily Report for 27th February 2018

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature -4.3 °C (-6.9) 23:13 0.6 °C (-1.6) 6.5 °C (+3.9), 2009 -4.3 °C (-6.9), 2018
Maximum Temperature -0.1 °C (-8.8) 14:09 6.2 °C (-1.4) 14.0 °C (+5.3), 2009 -0.1 °C (-8.8), 2018
Mean Temperature -2.4 °C (-7.8) 3.6 °C (-1.5) 10.2 °C, 2009 -2.4 °C, 2018
Minimum Humidity 59% 17:45 65% 76%, 2010 47%, 2016
Maximum Humidity 88% 07:09 91% 98%, 2013 74%, 2016
Mean Humidity 77% 80% 89%, 2010 61%, 2016
Minimum Pressure 1020 hPa 23:15 1013 hPa 1032 hPa, 2013 982 hPa, 2017
Maximum Pressure 1029 hPa 00:30 1021 hPa 1035 hPa, 2013 999 hPa, 2017
Mean Pressure 1024 hPa 1017 hPa 1034 hPa, 2013 989 hPa, 2017
Mean Wind Speed 4.8 mph (-0.3) 5.8 mph (+0.7) 7.6 mph, 2017 4.0 mph, 2010
Maximum Wind Speed 13.8 mph 14:19 14.4 mph 18.9 mph, 2017 10.7 mph, 2012
Maximum Gust 19.6 mph 14:20 22.2 mph 27.3 mph, 2017 15.4 mph, 2012
Mean Wind Direction NE
Rainfall / Snow-melt approx. 0.5 mm 30.4 mm (79%) 9.1 mm, 2017
Maximum Hourly Rain n/a 5.6, 2017
Maximum 10-min Rain n/a 2, 2017
Maximum Rain Rate n/a 30, 2010
Minimum Dew Point -8.3 °C 17:45 -2.1 °C 3.7 °C, 2009 -8.3 °C, 2018
Maximum Dew Point -3.7 °C 14:09 2.8 °C 7.9 °C, 2010 -3.7 °C, 2018
Mean Dew Point -5.9 °C 0.3 °C 5.9 °C, 2012 -5.9 °C, 2018
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * -4.1 °C * 07:05 1.3 °C 8.2 °C, 2017 -4.1 °C, 2018
Day Maximum (09-21) -0.1 °C 14:09 5.9 °C 14.0 °C, 2009 -0.1 °C, 2018
Max 10m Temp Rise 0.5 °C 09:57 0.5 °C 0.9 °C, 2010 0.3 °C, 2012
Max 1hr Temp Rise 1.6 °C 09:05 1.6 °C 1.9 °C, 2015 0.8 °C, 2017
Max 1hr Hum Rise 19% 12:24 9% 19%, 2018 4%, 2016
Max 10m Temp Fall 1.1 °C 14:27 0.5 °C 1.1 °C, 2018 0.2 °C, 2012
Max 1hr Temp Fall 1.8 °C 12:27 1.2 °C 1.8 °C, 2018 0.5 °C, 2012
Max 1hr Hum Fall 15% 16:15 9% 15%, 2014 4%, 2012
Max 10m Wind Speed 9.8 mph 11:33 11.2 mph 14.4 mph, 2017 7.6 mph, 2012
Minimum Feels-like -10.3 °C 08:05 -3.8 °C 3.2 °C, 2012 -10.3 °C, 2018
Maximum Feels-like -1.1 °C 15:24 4.8 °C 11.2 °C, 2012 -1.1 °C, 2018
Mean Feels-like -6.4 °C 0.4 °C 8.2 °C, 2012 -6.4 °C, 2018
Air-frost Hrs 24 hrs 3 hrs 24 hrs, 2018 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 4.2 °C (-1.9) 5.5 °C (+0.2) 7.5 °C (+1.4), 2009 3.2 °C (-2.9), 2016
Humidity Range 29% 26% 48%, 2014 11%, 2017
Pressure Range 9 hPa 8 hPa 17 hPa, 2017 3 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 4.4 [46%]91 hrs (125%) [38%] 8 [83%], 2015 0 [0%], 2012
Wet Hours 1
[Mean rain rate: 0.5 mm/h]
53 hrs (105%) [8.1%] 5, 2017 , 2009
Cloud Cover am: Sunny transitioned to Mostly Cloudy
pm: Partly Cloudy
Events Snowfall: ~0.5 cm
Air Frost
Comments 11-15 Snow shs
Extra Comments no 09z snow, but did get a dusting at 13z
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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