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: 332 AM EDT WED AUG 20 2014

View Nearby Observations

Flagler Beach to Volusia-Brevard County Line 20-60 nm

Marine Zone Forecast





  • SynopsisTHE ATLANTIC HIGH PRESSURE RIDGE AXIS WILL REMAIN NEAR TO JUST NORTH OF LAKE OKEECHOBEE THROUGH LATE WEEK. STORM COVERAGE WILL REMAIN BELOW NORMAL THROUGH THE REST OF THE WORK WEEK WITH OFFSHORE MOVING THUNDERSTORMS LESS LIKELY. .GULF STREAM HAZARDS...NONE.

    THE APPROXIMATE LOCATION OF THE WEST WALL OF THE GULF STREAM BASED ON THE REAL TIME OCEAN FORECAST SYSTEM FROM SUNDAY AUGUST 17TH.

    42 NAUTICAL MILES EAST OF PONCE INLET. 30 NAUTICAL MILES EAST OF PORT CANAVERAL. 26 NAUTICAL MILES EAST OF SEBASTIAN INLET. 17 NAUTICAL MILES EAST OF FORT PIERCE INLET. 10 NAUTICAL MILES EAST OF SAINT LUCIE INLET.
  • Today Southwest winds 5 to 10 knots becoming south late in the afternoon. Seas 2 feet with a dominant period 9 seconds.
  • Tonight Southwest winds 10 to 15 knots. Seas 2 feet with a dominant period 9 seconds. Slight chance of showers and thunderstorms.
  • Thursday South winds 5 to 10 knots. Seas 2 feet with a dominant period 9 seconds. Isolated showers and thunderstorms.
  • Thursday Night South winds 5 to 10 knots. Seas 2 to 3 feet. Isolated showers and thunderstorms after midnight.
  • Friday South winds 5 to 10 knots. Seas 2 to 3 feet. Slight chance of showers and thunderstorms.
  • Friday Night South winds 5 to 10 knots. Seas 2 to 3 feet. Slight chance of showers and thunderstorms.
  • Saturday Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Slight chance of showers and thunderstorms.
  • Saturday Night South winds 10 to 15 knots. Seas 2 to 3 feet. Chance of showers and thunderstorms.
  • Sunday Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Slight chance of showers and thunderstorms.



Additional Forecasts and Information

Zone Area Forecast for Flagler Beach to Volusia-Brevard County Line 20-60 nm
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