National Weather Service United States Department of Commerce

Severe weather possible for parts of northern, central Plains and Upper Midwest, as well as parts of OH, TN Valleys and Southeast

The NWS Storm Prediction Center is forecasting a risk of severe thunderstorms Wednesday afternoon and evening for two areas: one covering parts of the northern & central Plains and Upper Midwest; and the other area covering parts of the Tenn. & Ohio Valleys and Southeast. Large hail & damaging winds will be the main threats, but there is a possibility of tornadoes for the Plains/Midwest area.
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Last Update: 249 PM EDT WED AUG 20 2014

View Nearby Observations

Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm

Marine Zone Forecast





  • SynopsisWEAK LOW PRESSURE WILL MOVE NORTH OF THE AREA TONIGHT AND THURSDAY. MORE LOW PRESSURE WILL MOVE SOUTH OF THE AREA THURSDAY NIGHT THROUGH EARLY SATURDAY. HIGH PRESSURE WILL BUILD IN FROM THE NORTH LATER FRIDAY AND REMAIN FOR THE WEEKEND AND INTO EARLY NEXT WEEK.
  • Tonight S winds 5 to 10 kt. Seas around 2 ft. Mainly in E swell with a dominant period of 6 seconds.
  • Thu SE winds 5 to 10 kt. Seas around 2 ft. Mainly in E swell with a dominant period of 6 seconds.
  • Thu Night SE winds 5 to 10 kt. Seas around 2 ft. Mainly in E swell with a dominant period of 7 seconds. a chance of showers. Vsby 1 to 3 nm early in the evening.
  • Fri E winds 5 to 10 kt. Seas 2 to 3 ft. Mainly in E swell with a dominant period of 6 seconds. a chance of showers.
  • Fri Night E winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers.
  • Sat E winds around 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers.
  • Sat Night NE winds around 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers in the evening.
  • Sun NE winds 10 to 15 kt. Seas 3 to 5 ft.
  • Mon NE winds 10 to 15 kt...diminishing to 5 to 10 kt after midnight. Seas 3 to 5 ft.



Additional Forecasts and Information

Zone Area Forecast for Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm
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