Tropical Storm Bertha officially formed at 8:30 a.m. Wednesday morning after rapidly intensifying overnight. It made landfall at 9:30 a.m. near Charleston, South Carolina, weakened to a depression at 2:00 p.m. and was no longer an official tropical system at 5:00 p.m. Wednesday. The life of the storm only lasted 8.5 hours, but the rain for central North Carolina will last until Saturday.
Even though the system is very weak with no major wind problems, it is producing heavy rain and there is enough of a circulation that some brief tornadoes could spin up Wednesday night. This is why parts of central North Carolina remain in a Marginal Risk (1 on the 1-5 scale) of severe weather through Wednesday night.
Heavy rain is expected mainly southwest and west of the Triangle. Up to two inches of rain will be possible so a Flash Flood Watch has been issued for Chatham and Moore counties through Wednesday night. Any heavy downpours could cause poor drainage areas and small creeks and streams to flood.
Unsettled weather will then hang on for Thursday and Friday with showers and storms around. Another Marginal Risk of severe weather is in effect for all of North Carolina Thursday. The most likely timing would be Thursday afternoon and evening with damaging wind and an isolated tornado the most likely risk.
A cold front is expected later Saturday with mainly PM storms. Sunday will be cooler and drier with skies becoming mostly sunny. June will bust in on Monday, with sunny skies and pleasant temperatures. It will gradually warm up to the middle 80s by midweek.
OVERNIGHT will be cloudy with showers and scattered storms. The overnight low will be 68. Winds will be southeast 8 to 15 mph.
THURSDAY will be cloudy with scattered showers and storms likely. The high will be 82. Winds will be south 8 to 12 mph.
FRIDAY will be cloudy with showers and scattered storms likely. The high will be 81. Winds will be southwest 8 to 15 mph.
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This forecast was prepared by the CBS 17 Storm Team and is based on the latest information available and years of weather forecasting in North Carolina. It was not produced by a computer like many forecasts you find on the web, social media and smart phone apps.