Severe Thunderstorms and Excessive Rainfall in the Mid-Atlantic; Heat and Fire Weather Concerns in the West

Scattered strong to severe storms, excessive rainfall, and flooding are expected across parts of the Mid-Atlantic into the Northeast today. Flood Watches are in effect. Heat will continue to impact the West today. Heat advisories are in effect for portions of the Intermountain West; and Extreme Heat Warnings are in effect for portions of Arizona and southeast California. Read More >

Rain Today with Chance of Thunderstorms

Good morning! Low pressure system moves over New England, bringing a cold front through the area later tonight. Fog develops over the coast and Downeast region this morning, reducing visibility to below half a mile in many locations. Overcast skies today, as rain showers begin to move in from the west to east. There is a potential for some thunderstorms in western/central Maine today due to some favorable instability. Could be some periods of heavy rain associated with these storms. Some gusty winds could also occur this afternoon throughout the state this afternoon. Front passes over the state tonight, causing temperatures to drop down in to the 60s. Scattered rain showers could occur Downeast along the front. Another round of fog is possible tonight into early tomorrow morning. Tomorrow, period of brief ridging, keeping skies partially cloudy. Could be a few scattered rain showers in the north, from a low pressure system out to the northwest. For more information, please go to weather.gov/car

Coastal Flooding --- Fire --- Flooding --- Heat --- Thunderstorms --- Tropical --- Winter

Spot Fire Weather Forecast Request

Red Flag Event Criteria

1) Forest fuel conditions dry enough to support dangerous fire behavior. This shall be coordinated with the New Hampshire Forest Protection Bureau, and the Maine Forest Service.

2) Weather conditions which could result in dangerous fire behavior: less than 30% humidity and frequent or sustained gusts above 25 mph.

Note: Both forest and weather conditions must be expected to issue a Red Flag Warning.

Fire Weather Watch is issued up to 72 hours in advance of expected onset of red flag criteria

Red Flag Warning is issued when red flag criteria will occur in 24 hours or less

Day 1 Min RH

Map displays minimum relative humidity values for the afternoon of Day 1.

Map is updated every time the forecaster issues a new forecast.

Day 2 Min RH

Map displays 24 hour minimum relative humidity values for the afternoon of Day 2.

Map is updated every time the forecaster issues a new forecast.

Day 1 Fire Weather Discussion

National Forecast Maps

Surface Analysis

The Weather Prediction Center (WPC) produces surface maps which depicts the analysis of highs, lows, fronts, troughs, outflow boundaries, squall lines, and drylines.