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Severe weather possible from central Plains to Gulf Coast; Heavy rain for Gulf Coast

The NWS Storm Prediction Center is forecasting a risk of severe thunderstorms Saturday from the central Plains and mid-Missouri Valley southward across Texas and eastward across the Gulf Coastal states. These thunderstorms will be capable of producing hail and locally damaging winds. In addition, heavy rain could lead to flash flooding along the Gulf Coast where Flash Flood Watches are in effect.
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Last Update: 1027 AM EDT SAT APR 18 2015

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Key West, FL Local Forecast Office

12NM N Vaca Cut FL

Marine Zone Forecast

SEAS ARE GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.

Synopsis: A DEEP LAYER RIDGE OVER THE EASTERN GULF OF MEXICO WILL SLOWLY SLIDE EASTWARD THROUGH SUNDAY EVENING AHEAD OF AN EASTWARD MOVING TROUGH. THIS TROUGH WILL STALL OVER SOUTH FLORIDA ON MONDAY...THEN DISSIPATE TUESDAY NIGHT. THE APPROXIMATE SHOREWARD EDGE OF THE GULF STREAM CURRENT...AS OF APRIL 17TH...

38 NM SOUTH OF DRY TORTUGAS LIGHT...ON LOGGERHEAD KEY. 35 NM SOUTH OF COSGROVE SHOAL LIGHT...OFF THE MARQUESAS KEYS. 33 NM SOUTH OF SAND KEY LIGHT...OFF KEY WEST. 22 NM SOUTH OF LOOE KEY...OFF BIG PINE KEY. 15 NM SOUTH OF SOMBRERO KEY LIGHT...OFF MARATHON. 2 NM SOUTHEAST OF ALLIGATOR REEF LIGHT...OFF ISLAMORADA. 3 NM SOUTHEAST OF MOLASSES REEF LIGHT...OFF KEY LARGO. 5 NM EAST OF CARYSFORT REEF LIGHT...OFF OCEAN REEF.

GULF STREAM INFORMATION COURTESY OF THE NAVAL OCEANOGRAPHIC OFFICE.

This Afternoon
Southeast to south winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers.
Tonight Through Sunday Night
Southeast winds near 10 knots. Seas around 1 foot. Nearshore waters a light chop. Isolated showers.
Monday
Southwest winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers.
Monday Night
Variable winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers.
Tuesday Through Wednesday
Variable winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. Scattered showers.
Wednesday Night
Southeast winds 5 to 10 knots. Seas 1 foot or less. Nearshore waters smooth to a light chop. Isolated showers.

ABOUT THIS FORECAST

Last Update: 1027 AM EDT SAT APR 18 2015
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