National Weather Service United States Department of Commerce

Severe weather possible for parts of northern Plains and mid/upper Mississippi River Valley

Severe thunderstorms are expected across portions of the northern Plains and upper Mississippi Valley Wednesday. Large hail and damaging winds will be the main threats with these storms, but a tornado or two could occur as well. Other strong to severe storms may occur from late afternoon into the overnight hours from the middle Mississippi Valley into the lower Ohio Valley.
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Hazardous Weather Conditions

Last Update: 912 PM CDT TUE AUG 19 2014

View Nearby Observations

Coastal waters from Baffin Bay to Port Aransas out 20 NM

Marine Zone Forecast

...SMALL CRAFT SHOULD EXERCISE CAUTION...



  • SynopsisPERIODS OF MODERATE ONSHORE FLOW ARE EXPECTED THROUGH WEDNESDAY NIGHT AS AN AREA OF LOW PRESSURE DEEPENS IN WEST TEXAS AND HIGH PRESSURE CONTINUES OVER THE NORTHEAST GULF OF MEXICO. SURFACE FORCING IN THE MORNING WILL RESULT IN ISOLATED SHOWERS AND POSSIBLE THUNDERSTORMS WEDNESDAY MORNING OVER THE GULF WATERS...WITH ISOLATED STORMS NEAR THE SEA BREEZE ALONG THE COAST WEDNESDAY AFTERNOON. DRIER AIR IS EXPECTED TO MOVE INTO THE COASTAL WATERS WEDNESDAY NIGHT LIMITING THE POTENTIAL FOR SHOWER DEVELOPMENT. A WEAK TO MODERATE ONSHORE FLOW WILL PERSIST FROM THURSDAY INTO THE WEEKEND.
  • Rest Of Tonight Southeast wind 15 to 20 knots. Seas 4 to 5 feet. A slight chance of showers and thunderstorms after midnight.
  • Wednesday Southeast wind 15 to 20 knots. Seas 4 to 5 feet. A slight chance of showers and thunderstorms.
  • Wednesday Night Southeast wind 15 to 20 knots. Seas 4 to 6 feet.
  • Thursday Southeast wind around 15 knots. Seas 3 to 5 feet. A slight chance of showers in the morning.
  • Thursday Night Southeast wind 10 to 15 knots. Seas 3 to 4 feet.
  • Friday Southeast wind 10 to 15 knots. Seas 3 to 4 feet.
  • Friday Night Southeast wind 10 to 15 knots. Seas 2 to 3 feet.
  • Saturday Southeast wind 10 to 15 knots. Seas 2 to 3 feet.
  • Saturday Night Southeast wind 10 to 15 knots. Seas 2 to 3 feet.
  • Sunday Southeast wind 5 to 10 knots becoming east 10 to 15 knots in the afternoon. Seas 2 to 3 feet.
  • Sunday Night Southeast wind 10 to 15 knots. Seas 2 to 3 feet.



Additional Forecasts and Information

Zone Area Forecast for Coastal waters from Baffin Bay to Port Aransas out 20 NM
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