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Tropical Storm Warning


Caribbean Sea
NWS National Hurricane Center Miami, FL
446 PM EDT Thu Sep 21 2017

Offshore Waters Forecast for the Tropical N Atlantic from 07N to
22N between 55W and 64W, the SW N Atlantic S of 31N W of 65W
including Bahamas, and the Caribbean Sea.

Seas 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.

AMZ117-220900-
Bahamas including Cay Sal Bank-
446 PM EDT Thu Sep 21 2017

...TROPICAL STORM WARNING...

.TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. ATLC Exposures,
NE winds 15 to 20 kt, increasing to 25 to 30 kt late. Seas 10 ft,
building to 14 ft late. Elsewhere, NE winds 15 to 20 kt. Seas 4
ft.
.FRI...TROPICAL STORM CONDITIONS EXPECTED. ATLC Exposures, N to
NE winds 35 to 45 kt. Seas 19 to 20 ft. Elsewhere, NE winds 25 to
30 kt. Seas 4 to 5 ft.
.FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. ATLC
Exposures, N to NE winds 35 to 40 kt, becoming N 25 to 30 kt
late. Elsewhere, N to NE winds 25 to 30 kt. Seas 19 to
20 ft ATLC Exposures, and 6 to 7 ft elsewhere. Scattered showers
and isolated thunderstorms.
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. ATLC Exposures, NW
to N winds 25 to 30 kt. Seas 18 ft. Elsewhere, N winds 20 to
25 kt. Seas 8 ft.
.SAT NIGHT...ATLC Exposures, NW winds 25 to 30 kt. Seas 16 to
17 ft. Elsewhere, N winds 15 to 20 kt. Seas 8 ft.
.SUN...NW winds 15 to 20 kt. Seas 15 ft ATLC Exposures, and 8 ft
elsewhere.
.SUN NIGHT...NW winds 15 to 20 kt. Seas 13 to 14 ft ATLC
Exposures, and 7 ft elsewhere.
.MON...W winds 15 to 20 kt. Seas 10 to 11 ft ATLC Exposures, and
5 to 6 ft elsewhere.
.MON NIGHT...NW to N winds 10 to 15 kt. Seas 8 to 9 ft ATLC
Exposures, and 4 ft elsewhere.
.TUE...W to NW winds 10 to 15 kt, shifting to N in the
afternoon. Seas 7 ft ATLC Exposures, and 3 to 4 ft elsewhere.

$$


Hazardous Weather Outlook


Hazardous Weather Outlook for South Florida
National Weather Service Miami FL
439 PM EDT Thu Sep 21 2017

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
220845-
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-
439 PM EDT Thu Sep 21 2017

...High Risk of Rip Currents for the Palm Beach Coast...

This hazardous weather outlook is for South Florida.

.DAY ONE...TONIGHT

Rip currents: There is High Risk of rip currents along the beaches of
northern Palm Beach County. There is a moderate risk of rip currents
for the southern half of Palm Beach County.

Thunderstorms: Thunderstorms are possible over South Florida today
with the best chances over the interior areas.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

Scattered to numerous afternoon thunderstorms are possible over
South Florida Friday and Saturday, before drier air works into the
area late this weekend into early next week reducing the coverage of
the thunderstorms.

Long period northeast swells from distant tropical Storm Jose and
Hurricane Maria will continue to lead to an enhancement of rip
currents along all Atlantic beaches through early next week.

Atlantic waters could become hazardous this weekend into early next
week due to the long period of northeast swells.


.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

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

$$

Hazardous Weather Outlook
National Weather Service Key West FL
451 AM EDT Thu Sep 21 2017

FLZ076>078-GMZ031>035-042>044-052>055-072>075-220900-
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-
451 AM EDT Thu Sep 21 2017

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

.DAY ONE...TODAY AND TONIGHT

Isolated thunderstorms are possible today and tonight. The primary
hazard will be cloud to surface lightning.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

Scattered showers and thunderstorms are possible Friday through
Wednesday. The primary hazard will be cloud to surface lightning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

$$

BWC


Short Term Forecast


Short Term Forecast
National Weather Service Key West FL
645 PM EDT Thu Sep 21 2017

FLZ077-078-GMZ032-035-043-044-053-054-212345-
Monroe Middle Keys-Monroe Lower Keys-
Bayside and Gulf side from Craig Key to west end of Seven Mile
Bridge-
Gulf of Mexico from west end of Seven Mile Bridge to Halfmoon Shoal
out to 5 Fathoms-
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 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-
Including the Communities of Marathon and Key West
645 PM EDT Thu Sep 21 2017

.NOW...
Isolated thunderstorms and showers will move southwestward near 8
mph over portions of the extreme southeastern Gulf of Mexico, the
middle Florida Keys, and Hawk Channel. Between 615 pm and 645 pm, a
thunderstorm moved through Marathon and vicinity, bringing
occasional lightning strikes, reduced horizontal visibility below a
mile in very heavy rain, and wind gusts between 25 and 30 mph.
Through 745 pm, showers and storms will be concentrated in a
corridor between East Cape Sable, and Sombrero Key Light.

$$

Kasper

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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