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Weather Forecast

Will Hand's Forecast for Dartmoor

Forecast for Saturday 18th November to Saturday 25th November issued on Friday morning 17thNovember.

During the past week our numerical models have been struggling with developments beyond a few days and there is still a lot of uncertainty. Consequently confidence is extremely low in the forecast beyond Monday and so I will not be providing much detail. Very cold air is beginning to pool unusually early (for modern times) over Scandinavia, Iceland and all of the Arctic now. The Atlantic jet stream is weak and convoluted and so developments are fickle, but still important. However, as already mentioned, they are very difficult to predict in detail (despite what you may have read in the newspapers).


Saturday should be a cloudy day with moderate or fresh W to WNW winds. Moderate or good visibility and temperatures 7 to 10C. Chance of some light rain or drizzle and poorer visibility spreading in later in the afternoon and evening and persisting overnight into Sunday as winds ease down.

Sunday will continue cloudy with light or moderate mainly SW winds and occasional drizzle. Visibility generally moderate but perhaps poor at times above 500 metres in heavier drizzle. Temperatures 7 to 9C. Westerly wind freshens overnight into Monday

Monday continues mainly cloudy and mainly dry with moderate or fresh westerly winds. Perhaps a few sunny intervals. Visibility becoming moderate or good with temperatures 9 to 12C.

Tuesday continues cloudy with outbreaks of rain and drizzle. Visibility becoming moderate or poor in light or moderate mainly westerly winds. Temperatures 8 to 11C.

The rest of the week is very low confidence and is expected to turn changeable with spells of rain and drier interludes, some of the rain could be heavy. Low probability of colder air spreading south later in the week turning the rain to snow. Temperatures near normal but becoming more windy generally from an Atlantic direction.


The outlook for the end of November into mid December is for it to be generally cold and unsettled with spells of wet weather at times, possibly with snow, interspersed with some drier, frosty spells.


Go here to look at current weather for Haytor and Postbridge.

Please tell your friends and colleagues about this unique site on Dartmoor!


Will Hand

Chief Forecaster Haytor

 

Taken (with permission) from Will Hand's Weekly Forecast

Will is a senior Met Office Employee based on Dartmoor.

 


Haze

9°C

Plymouth

Haze

Humidity: 67%

Wind: 12.87 km/h

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