Daily Report for 30th April 2018

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 4.7 °C (-1.3) 04:35 8.1 °C (+3.1) 10.9 °C (+4.9), 2011 2.4 °C (-3.6), 2016
Maximum Temperature 8.7 °C (-5.8) 17:18 15.1 °C (+2.3) 20.4 °C (+5.9), 2014 8.7 °C (-5.8), 2018
Mean Temperature 6.4 °C (-3.6) 11.5 °C (+2.7) 15.1 °C, 2011 6.4 °C, 2018
Minimum Humidity 62% 19:15 62% 62%, 2018 36%, 2013
Maximum Humidity 90% 10:35 89% 97%, 2014 71%, 2017
Mean Humidity 78% 78% 78%, 2018 52%, 2017
Minimum Pressure 1004 hPa 10:07 1008 hPa 1022 hPa, 2013 997 hPa, 2017
Maximum Pressure 1010 hPa 23:53 1015 hPa 1027 hPa, 2013 1008 hPa, 2017
Mean Pressure 1007 hPa 1011 hPa 1024 hPa, 2013 1000 hPa, 2017
Mean Wind Speed 7.9 mph (+3.0) 5.4 mph (+0.5) 7.9 mph, 2018 2.8 mph, 2014
Maximum Wind Speed 17.2 mph 04:13 14.0 mph 18.1 mph, 2011 10.9 mph, 2014
Maximum Gust 28.8 mph 03:14 21.8 mph 28.8 mph, 2018 17.0 mph, 2014
Mean Wind Direction N
Rainfall 4.8 mm 53.3 mm (109%) 4.8 mm, 2018
Maximum Hourly Rain 0.8 mm 10:00 3.0 mm, 2010
Maximum 10-min Rain 0.2 mm 04:24 1.4 mm, 2010
Maximum Rain Rate 1.0 mm/h 03:12 30 mm/h, 2010
Minimum Dew Point 1.0 °C 21:16 4.8 °C 5.9 °C, 2010 -3.1 °C, 2016
Maximum Dew Point 3.8 °C 10:35 9.4 °C 12.5 °C, 2014 2.9 °C, 2013
Mean Dew Point 2.8 °C 7.3 °C 8.0 °C, 2010 -0.9 °C, 2016
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 4.7 °C 05:19 8.3 °C 10.9 °C, 2011 2.4 °C, 2016
Day Maximum (09-21) 8.7 °C 17:18 15.0 °C 20.4 °C, 2014 8.7 °C, 2018
Max 10m Temp Rise 0.4 °C 11:29 0.5 °C 0.8 °C, 2013 0.4 °C, 2011
Max 1hr Temp Rise 0.9 °C 12:07 1.7 °C 3.5 °C, 2013 0.9 °C, 2018
Max 1hr Hum Rise 6% 02:04 8% 13%, 2013 5%, 2009
Max 10m Temp Fall 0.3 °C 01:37 0.5 °C 0.9 °C, 2009 0.3 °C, 2018
Max 1hr Temp Fall 0.9 °C 22:45 1.5 °C 2.2 °C, 2015 0.9 °C, 2018
Max 1hr Hum Fall 9% 12:19 9% 20%, 2014 6%, 2017
Max 10m Wind Speed 13.0 mph 07:01 10.5 mph 13.0 mph, 2018 8.1 mph, 2014
Minimum Feels-like -1.2 °C 04:08 5.7 °C 11.3 °C, 2011 -1.2 °C, 2018
Maximum Feels-like 8.0 °C 17:55 15.8 °C 20.4 °C, 2014 8.0 °C, 2018
Mean Feels-like 2.8 °C 11.1 °C 15.4 °C, 2011 2.8 °C, 2018
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 4.0 °C (-4.5) 7.0 °C (-0.8) 13.6 °C (+5.0), 2014 4.0 °C (-4.5), 2018
Humidity Range 28% 27% 60%, 2014 24%, 2009
Pressure Range 6 hPa 7 hPa 13 hPa, 2016 3 hPa, 2010
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]112 hrs (81%) [30%] 13.4 [100%], 2011 0 [0%], 2018
Wet Hours 12
[Mean rain rate: 0.4 mm/h]
87 hrs (189%) [12%] 12, 2018 0, 2011
Cloud Cover Overcast
Events None
Comments 01-15 Rain
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
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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