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Friday July 23rd 2021 - number of obs: 1440 (100%)

TemperatureHumidity
Maximum
25.6°Cat 15:49
Maximum
91.0 %at 06:57
Minimum
15.9°Cat 07:03
Minimum
45.0 %at 13:51
Average20.8°C Average68.0 %
Rain (21Z D-1 to 21Z D)Sunshine
Total0.0 mmTotal7.8 hours
PressureWind
Highest
1016.8 hPaat 09:03
Max Mean
12 knotsat 21:02
Lowest
1006.6 hPaat 05:41
Max Gust
20 knotsat 20:51
Remarks
Nil

Met Office 12Z Analysis Chart

Daily Diary

Last day of the heatwave, with slowly increasing amounts of Ci, Cs and Ac (occasionally Ac Cast) spreading up from the south, associated with an upper vortex and slack surface depression slowly coming northwards. Winds initially light but a steady E'ly developed during the day. This weakened into the early evening, but then suddenly ramped up again into the evening (possible low-level jet?), before once again dying and then re-strengthening overnight. Dry during the day bar the odd spot from high Ac, but rain arrived overnight, and lightning observed to the S/SE.

RoostCam South Timelapse | RoostCam North Timelapse



Table of Frequencies (percent)
Direction Frequency of Wind Direction
N 4
NNE 13
NE 23
ENE 26
E 24
ESE 5
SE 1
SSE 1
S 1
SSW 0
SW 0
WSW 0
W 0
WNW 0
NW 0
NNW 0
Total 25.53