Weather Alert: Possible Thunderstorms, Flooding Wednesday in Chelmsford

The National Weather Service has issued a hazardous weather outlook for Chelmsford on Wednesday as scattered thunderstorms and heavy rain are possible.

>>>Chelmsford’s Extended Forecast

Localized flash floods could occur, according to the alert, as well as isolated strong to severe thunderstorms. If those severe thunderstorms do develop, the primary threat will be localized wind gusts.

Below is your hourly forecast for Chelmsford:

10 a.m. - 77, mostly cloudy

11 a.m. - 78, mostly cloudy

noon - 80, cloudy; 5 percent chance of precipitation

1 p.m. - 76, thunderstorms; 55 percent chance of precipitation

2 p.m. - 78, thunderstorms; 90 percent chance of precipitation

3 p.m. - 76, scattered thunderstorms; 30 percent chance of precipitation

4 p.m. - 85, scattered thunderstorms; 35 percent chance of precipitation

5 p.m., - 84, scattered thunderstorms; 45 percent chance of precipitation

6 p.m. - 82, scattered thunderstorms; 10 percent chance of precipitation

7 p.m. - 80, scattered thunderstorms; 5 percent chance of precipitation

8 p.m. - 77, isolated thunderstorms; 5 percent chance of precipitation

9 p.m. - 74, cloudy

10 p.m. - 71, partly cloudy