Dangerous Temperatures in the East, Flash Flooding Risk for Central US


Temperatures will soar to dangerous levels along the East Coast, mid-Atlantic through New England on Monday where the heat index will feel like 105-110 degrees, while a flash flooding risk hovers over the central US.

Dangerous heat for the East Coast

Much of the East Coast, mid-Atlantic and New England areas are under heat advisories and/or excessive heat warnings for Monday. Many areas will see the heat index cause temperatures to feel between 105-110 degrees.

NWS Heat alerts

The National Weather Service (NWS) has issued alerts for the following locations:

Excessive heat warning: Central and northeast North Carolina, eastern Virginia, southern Maryland, Delaware, New Jersey, southeastern Pennsylvania, northern Arizona.

Heat advisory: northwest and northeastern South Carolina; southeastern, central, northeastern and eastern North Carolina; eastern, western and northern Virginia; eastern West Virginia; southern and central Maryland; Washington, D.C.; Delaware; central and southeastern Pennsylvania; New Jersey; eastern New York, New York City and surrounding areas; western New England areas; Boston and surrounding areas; southern New Hampshire; southern Maine.

On the West Coast: Heat advisories for Southwest Oregon and Northern California;

Thunderstorms, severe weather, and flash flooding risk

Thunderstorms will be prevalent throughout the central US, into the Ohio Valley, mid-South, and portions of the South, as well as throughout the New England areas and into the Northeast.

In the central US, severe thunderstorms are forecast over the Western halves of the Dakotas and Nebraska.

Flash flooding risk for central US: The National Weather Service is warning of heavy rain with potential flash flooding over central and eastern North Dakota into northwestern Minnesota. Farther south, a flash flooding risk spans from north-central Minnesota into the eastern half of Kansas, southeastern and south-central Nebraska, southern Iowa and West central and northern Missouri.

US weather forecast: July 20, 2020

West: San Francisco 64, partly cloudy; Los Angeles 83, partly cloudy; San Diego 74, partly cloudy; Reno 96, partly cloudy; Las Vegas 110, partly cloudy; Salt Lake City 96, sunny; Denver 92, mostly sunny.

Northwest & Northern Rockies: Seattle 85, sunny; Medford 102, sunny; Boise 92, sunny; Billings 81, mostly sunny; Minot 73, rain; Rapid City 81, thunderstorms; Cheyenne 81, rain.

Southwest: Phoenix 108, partly cloudy; Tucson 104, partly cloudy; Albuquerque 97, mostly sunny; El Paso 99, partly cloudy; San Antonio 97, partly cloudy; Brownsville 95, mostly sunny.

Central & Upper Midwest: Lubbock 96, partly cloudy; Dallas 96, mostly sunny; Oklahoma City 94, partly cloudy; Kansas City 83, thunderstorms; Minneapolis 82, partly cloudy; Madison 79, partly cloudy.

Ohio Valley: Chicago 82, partly cloudy; St. Louis 84, thunderstorms; Detroit 86, mostly sunny; Cincinnati 89, mostly cloudy; Indianapolis 88, partly cloudy.

South: Houston 87, thunderstorms; New Orleans 90, thunderstorms; Memphis 96, partly cloudy; Birmingham 93, rain; Atlanta 84, thunderstorms; Charlotte 95, thunderstorms; Jacksonville 92, mostly sunny; Tampa 93, thunderstorms; Miami 86, thunderstorms.

East: Norfolk 99, partly cloudy; Washington, D.C. 98, thunderstorms; Philadelphia 96, partly cloudy; Buffalo 78, partly cloudy; New York City 98, partly cloudy; Boston 95, thunderstorms; Caribou 86, thunderstorms.