SYNOPTIC SITUATION
The UK has been affected by some fairly stormy conditions this week and this morning starts off as no exception
A low pressure sits n the English channel and unusually so will track WNW maintaining severe gale force NE that will back and moderate by 1100 to near gale force airflow.
The airmass is currently extremely stable and there form despite the strong airflow the surface wind conditions are lower than you might expect- but the maximum gust is still high
Air temperature 13-15 Celsius
Weather: Overcast with moderate rain and drizzle until 1300-1400 then scattered cloud
Portsmouth: HW 0450 LW 1029
KEY POINTS
- big mean to gust ratio- so will be squally- www.bramblemet.co.uk
- rain and drizzle easing 0900-0930- cloud lifting but not breaking indicating veer to east
- cloud breaking and clearing 1330-1400 further veer to the SE
-Gusty to begin with- with long period shifts
- shift period decreasing with clearing skies and further increasing wind
Time | Wind direction | Wind speed (KT) | MAX | Comments |
0900-1100 | 030-060 veering 070-090 | 25-30 decreasing 16-21 | 35-40 | Warm front clears through 0930-1000 wind veers and decreases |
1100-1300 | 070-090 | 16-21, occasionally 12 | 30 | Still overcast with isolated rain and drizzle |
1300-1500 | 070-090 becoming 130-150 | 16-21 increasing 20-25 | 30 | Cloud clearing increasing instability- wind building |
1500-1700 | 130-150 | 20-25 | 30 | Little change |
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