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Will it thunder in Merthyr Cynog, Powys?

The thunderstorm forecast percentage is calculated by combining data from several computer models.

Short range

Will it thunder today, tomorrow or the day after?

Tue 18 Aug
16%

Wed 19 Aug
38%

Medium range

Will it thunder during the following ten days?

Thu 20 Aug
0%
Fri 21 Aug
0%
Sat 22 Aug
0%
Sun 23 Aug
0%
Mon 24 Aug
0%
Tue 25 Aug
0%
Wed 26 Aug
0%
Thu 27 Aug
0%
Fri 28 Aug
3%
Sat 29 Aug
0%
Sun 30 Aug
0%

Other will it forecasts

Merthyr Cynog, Powys frost

Merthyr Cynog, Powys rain

Merthyr Cynog, Powys snow

Merthyr Cynog, Powys heat

Merthyr Cynog, Powys thunder

Full weather forecast

Next 3 days hour by hour

Merthyr Cynog, Powys hourly

Next 16 days in 3 hour intervals

Merthyr Cynog, Powys 16 day

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What is needed for thunderstorms?

Thunderstorms need moisture, an unstable atmosphere and lift, to develop.

Moisture is needed to create the clouds and rain.

The atmosphere needs to be unstable so that the air can rise and cool.

Lift is needed to get the air rising. This can be provided by fronts, sea breezes, mountains or heating from the sun.

Thunderstorms are most likely to occur in the summer months when the air is warm and moist. They are most likely to occur in the afternoon and evening when the sun has had time to heat the ground.

If you would like more in-depth information check our extensive range of Numerical Weather Prediction model data

To check the detailed weather forecast use the Place, postcode or geolocation options in the header.