Dangerous Heat Building in the West; Severe Storms in the Upper Midwest
A long duration heat wave will build across the Southwest, California, and Pacific Northwest. Dangerous heat is also forecast for the Great Basin and South Plains. Severe storms in the Upper Midwest may have locally heavy rain, damaging winds, and very large hail. Heavy rain and flooding will also be possible in the Deep South and Appalachians.
Hazardous Weather Conditions
High and low forecast temperature values represent air temperature.
Last Update: 7:30 pm EDT Aug 13, 2020
Forecast Valid: 2am EDT Aug 14, 2020-6pm EDT Aug 20, 2020
- This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
- The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.