A 6-1/2-hour period of dense fog Sunday morning is anticipated to make driving more hazardous than usual in western Montgomery County, the National Weather Service said. Visibility will be limited.
A flash flood watch was issued Wednesday by the National Weather Service for western Montgomery County, due to what AccuWeather forecasters predicted Tuesday would amount to a "firehose" rainstorm.
The National Weather Service confirmed potentially hazardous weather on its way to Pottstown, Collegeville, and the rest of western Montgomery County beginning Wednesday afternoon and continuing into late night hours.
Collegeville is the local second river community singled out in a new National Weather Service warning about flash flooding. Also: National Guard units are on stand-by in the storm; Gov. Wolf has declared a disaster emergency; MontCo urges no travel; and who to call when power fails.
Hurricane Ida plowed into Louisiana on Sunday with winds and storm surge stronger than that of Hurricane Katrina. Western MontCo won't feel those effects, but it could be drenched in Ida's rain.
Thanks to Tropical Storm Fred, western Montgomery County faces its greatest chance (90 percent) of a thunderstorm Wednesday night, forecasters say. Lower storm risks continue daily through Sunday.
Western Montgomery, western Chester, and much of Berks counties are included in the flash flood warning issued by the National Weather Service for Monday night. Storms may continue into Tuesday, Accuweather said.
What's to follow a third day of humid heat blasting across western Montgomery County? The risk of severe thunderstorms through Thursday night, according to AccuWeather. Beware of flash floods and wind gusts.
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