Heavy rain threat continues through Saturday from the Ohio Valley to the Mid-Atlantic and the Northeast. Scattered showers and thunderstorms will be possible over the Southwest and Rockies.

Widespread showers and thunderstorms will continue over much of the Mid-Atlantic, Northeast and the Ohio valley through the weekend. The central Appalachians and the lower Great Lakes/Ohio valley will likely have the higher rainfall amounts. Showers and thunderstorms will be possible this weekend as well from the desert southwest/southern Rockies northward to the northern Rockies and High Plains.
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Hazardous Weather Conditions

Last Update: 1209 PM EDT FRI SEP 30 2016

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Miami - South Florida Local Forecast Office

9NM E Virginia Key FL

Marine Zone Forecast

SEAS ARE PROVIDED AS A RANGE OF THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES...ALONG WITH THE OCCASIONAL HEIGHT OF THE AVERAGE HIGHEST 10 PERCENT OF THE WAVES.

Synopsis: SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE THROUGH THE WEEKEND AS AN UPPER-LEVEL LOW AND FRONTAL BOUNDARY BRING UNSETTLED WEATHER TO THE SOUTHERN FLORIDA WATERS. AS HURRICANE MATTHEW TRACKS CLOSER TO THE REGION EARLY NEXT WEEK, HAZARDOUS MARINE CONDITIONS ARE EXPECTED TO DEVELOP. HAZARDOUS SEAS AND GUSTY WINDS WILL BE POSSIBLE, WITH THE MAGNITUDE ULTIMATELY DEPENDENT ON THE EVOLUTION, STRENGTH, AND TRACK OF MATTHEW.

MARINE INTERESTS SHOULD CONTINUE TO REMAIN WELL INFORMED ON THE LATEST FORECASTS FROM THE NATIONAL HURRICANE CENTER AND NATIONAL WEATHER SERVICE MIAMI.

.GULF STREAM HAZARDS...NONE.

THE APPROXIMATE LOCATION OF THE WEST WALL OF THE GULF STREAM AS OF SEP 29, 2016 AT 1200 UTC...

9 NAUTICAL MILES EAST OF FOWEY ROCKS. 16 NAUTICAL MILES EAST SOUTHEAST OF PORT EVERGLADES. 11 NAUTICAL MILES EAST NORTHEAST OF LAKE WORTH. 7 NAUTICAL MILES EAST OF JUPITER INLET.

THIS DATA COURTESY OF THE NAVAL OCEANOGRAPHIC OFFICE.

Rest Of Today
East winds 5 to 10 knots. Seas less than 2 feet. Dominant period 3 seconds. Intracoastal waters a light chop. A chance of showers and thunderstorms.
Tonight
East southeast winds 5 to 10 knots along the coast to east southeast 10 to 15 knots in the gulf stream. Seas around 2 feet. Dominant period 3 seconds. Intracoastal waters a moderate chop. A chance of showers and thunderstorms.
Saturday
East winds 10 to 15 knots. Seas around 2 feet. Dominant period 3 seconds. Intracoastal waters a moderate chop. A chance of showers and thunderstorms.
Saturday Night
East winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Intracoastal waters a moderate chop. A chance of showers and thunderstorms.
Sunday
East winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A chance of showers and thunderstorms.
Sunday Night
East winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A chance of showers and thunderstorms.
Monday
East winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A chance of showers and thunderstorms.
Monday Night
East northeast winds 10 to 15 knots with gusts to around 20 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Intracoastal waters a moderate chop. A chance of showers and thunderstorms.
Tuesday
Tropical storm conditions possible. Showers and thunderstorms likely.
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ABOUT THIS FORECAST

Last Update: 1209 PM EDT FRI SEP 30 2016
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