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Hazardous Weather Outlook


Hazardous Weather Outlook for South Florida...UPDATED
National Weather Service Miami FL
949 AM EDT Fri Aug 18 2017

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
190200-
Lake Okeechobee-Biscayne Bay-
Coastal waters from Jupiter Inlet to Deerfield Beach FL out 20 NM-
Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM-
Waters from Jupiter Inlet to Deerfield Beach FL from 20 to 60 NM-
Waters from Deerfield Beach to Ocean Reef FL from 20 to 60 NM
excluding the territorial waters of Bahamas-Glades-Hendry-
Inland Palm Beach-Metro Palm Beach-Coastal Collier-Inland Collier-
Inland Broward-Metro Broward-Inland Miami-Dade-Metro Miami-Dade-
Mainland Monroe-Coastal Palm Beach-Coastal Broward-Coastal Miami-
Dade-Far South Miami-Dade-
Coastal waters from Chokoloskee to Bonita Beach FL out 20 NM-
Coastal waters from East Cape Sable to Chokoloskee FL out 20 NM-
Waters from Chokoloskee to Bonita Beach FL from 20 to 60 NM-
949 AM EDT Fri Aug 18 2017

...STRONG STORMS POSSIBLE OVER SW FLORIDA THIS AFTERNOON...
...HEAT INDICES BETWEEN 103 AND 105 DEGREES...
...INCREASING HEAVY RAIN CHANCES FOR THE WEEKEND INTO NEXT WEEK...

This hazardous weather outlook is for South Florida.

.DAY ONE...TODAY AND TONIGHT

Thunderstorms: Scattered thunderstorms are expected to develop over
the interior and gulf coast this afternoon along the sea breeze
boundaries. The primary hazards will be lightning, gusty wind, small
hail, and locally heavy rainfall.

Wind: Afternoon thunderstorms will be capable of producing gusty and
erratic winds up to 55 mph.

Hail: Small hail up to the size of nickels is possible with strong
thunderstorms over Southwest Florida this afternoon.

Flooding: Heavy rainfall from slow-moving thunderstorms over portions
of interior Southwest Florida could create minor flooding in low-
lying and poorly drained areas.

Temperatures: The heat index will be above 100 degrees across most
of South Florida this afternoon, with values of 105 possible across
much of the east coast metro and Gulf coast metro regions.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

Increasing tropical moisture is forecast to bring better storm
coverage Saturday into Sunday with locally heavy rainfall. A low
pressure system moving in the from the east may bring widespread
precipitation by mid next week. Heavy rainfall and lightning will be
the main hazards.

Stronger southeasterly flow may bring an increased threat for rip
currents late this weekend.

.SPOTTER INFORMATION STATEMENT...

Widespread spotter activation is not anticipated, however individual
spotters are encouraged to report high wind, hail and flooding to
the National Weather Service forecast office in Miami.

For more information...visit the National Weather Service in
Miami website at www.weather.gov/miami.

$$

RAG

Hazardous Weather Outlook
National Weather Service Key West FL
539 AM EDT Fri Aug 18 2017

FLZ076>078-GMZ031>035-042>044-052>055-072>075-191000-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
Bayside and Gulf side from Craig Key to west end of Seven Mile
Bridge-
Gulf waters from East Cape Sable to Chokoloskee 20 to 60 NM out
and beyond 5 fathoms-
Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel-
Gulf of Mexico from west end of Seven Mile Bridge to Halfmoon
Shoal out to 5 Fathoms-
Hawk Channel from Ocean Reef to Craig Key out to the reef-
Hawk Channel from Craig Key to west end of Seven Mile Bridge out
to the reef-
Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal
out to the reef-
Straits of Florida from Ocean Reef to Craig Key out 20 NM-
Straits of Florida from Craig Key to west end of Seven Mile
Bridge out 20 NM-
Straits of Florida from west end of Seven Mile Bridge to south of
Halfmoon Shoal out 20 NM-
Straits of Florida from Halfmoon Shoal to 20 NM west of Dry
Tortugas out 20 NM-
Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out-
Straits of Florida from Craig Key to west end of Seven Mile
Bridge 20 to 60 NM out-
Straits of Florida from west end of Seven Mile Bridge to south of
Halfmoon Shoal 20 to 60 NM out-
Straits of Florida from Halfmoon Shoal to 20 NM west of Dry
Tortugas 20 to 60 NM out-
539 AM EDT Fri Aug 18 2017

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE FLORIDA KEYS AND ADJACENT
COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT

Isolated thunderstorms will impact the Florida Keys, as well as
nearshore and offshore waters surrounding the island chain today
and tonight. The primary thunderstorm hazard is cloud to surface
lightning strikes.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

Isolated thunderstorms are possible along the Florida Keys, as
well as over nearshore and offshore waters adjacent to the island
chain Saturday. The primary thunderstorm hazard will be cloud to
surface lightning strikes.

Scattered thunderstorms are possible along the Florida Keys, as
well as over nearshore and offshore waters surrounding the island
chain Saturday night. The primary thunderstorm hazards will be
wind gusts near 40 mph, locally heavy rainfall, and cloud to
surface lightning strikes.

Isolated to scattered thunderstorms are possible along the Florida
Keys, as well as over nearshore and offshore waters adjacent to
the island chain Sunday through Thursday. The primary thunderstorm
hazard will be cloud to surface lightning strikes.

A Small Craft Advisory will likely be required for the coastal
waters of the Florida Straits Sunday night and Monday. A Small
Craft Advisory may be required for the coastal waters of Florida
Bay, the Gulf of Mexico, and Hawk Channel Sunday night and Monday.
A Small Craft Advisory may be required for the coastal waters of
the Atlantic and offshore Gulf of Mexico Monday night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

$$
BS

Hazardous Weather Outlook
National Weather Service Tampa Bay Ruskin FL
348 AM EDT Fri Aug 18 2017

FLZ043-050-052-056-057-061-139-142-148-149-151-155-160-162-165-
239-242-248-249-251-255-260-262-265-GMZ830-836-850-853-856-870-
873-876-182000-
Sumter-Pinellas-Polk-Hardee-Highlands-DeSoto-Coastal Levy-
Coastal Citrus-Coastal Hernando-Coastal Pasco-
Coastal Hillsborough-Coastal Manatee-Coastal Sarasota-
Coastal Charlotte-Coastal Lee-Inland Levy-Inland Citrus-
Inland Hernando-Inland Pasco-Inland Hillsborough-Inland Manatee-
Inland Sarasota-Inland Charlotte-Inland Lee-Tampa Bay waters-
Charlotte Harbor and Pine Island Sound-
Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM-
Coastal waters from Englewood to Tarpon Springs FL out 20 NM-
Coastal waters from Bonita Beach to Englewood FL out 20 NM-
Waters from Tarpon Springs to Suwannee River FL out 20 to 60 NM-
Waters from Englewood to Tarpon Springs FL out 20 to 60 NM-
Waters from Bonita Beach to Englewood FL out 20 to 60 NM-
348 AM EDT Fri Aug 18 2017

This Hazardous Weather Outlook is for West Central And Southwest
Florida.

.DAY ONE...Today and Tonight.

...THUNDERSTORM IMPACT...
Scattered to numerous thunderstorms are expected to develop during
the afternoon. Any storms that develop will be capable of
producing gusty winds, heavy rainfall, and frequent lightning.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

...THUNDERSTORM IMPACT...
Scattered to numerous thunderstorms can be expected each day
through the middle of next week. The strongest storms will be
capable of producing gusty winds, heavy rainfall, and frequent
lightning, however no organized severe weather is expected.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

$$

Fleming


Short Term Forecast


Short Term Forecast
National Weather Service Key West FL
958 AM EDT Fri Aug 18 2017

GMZ033-034-052>055-072>075-181500-
Gulf waters from East Cape Sable to Chokoloskee 20 to 60 NM out and
beyond 5 fathoms-
Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel-
Straits of Florida from Ocean Reef to Craig Key out 20 NM-
Straits of Florida from Craig Key to west end of Seven Mile Bridge
out 20 NM-
Straits of Florida from west end of Seven Mile Bridge to south of
Halfmoon Shoal out 20 NM-
Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas
out 20 NM-
Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out-
Straits of Florida from Craig Key to west end of Seven Mile Bridge
20 to 60 NM out-
Straits of Florida from west end of Seven Mile Bridge to south of
Halfmoon Shoal 20 to 60 NM out-
Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas
20 to 60 NM out-
958 AM EDT Fri Aug 18 2017

.NOW...
Through 1100 am, isolated showers and possibly a few thunderstorms
will move west near 10 knots across the southeastern gulf waters and
Florida Straits. Most of the showers are expected to remain beyond 20
miles north and northwest of Key West, just offshore the reef along
the Upper and Middle Keys, and in the vicinity of Dry Tortugas
National Park. In the strongest showers and thunderstorms, mariners
can expect wind gusts up to 25 knots, and visibilities reduced to 2
miles or less in brief heavy downpours, and possibly a few lightning
strikes.

$$

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
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