Alert archive / Florida / Special Marine Warnings in 2021

Special Marine Warning 175, NWS Key West, FL

August 16, 2021

NWS Key West, FL issued this special marine warning at Aug 16, 2021, 12:35 AM EDT. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 16, 2021, 12:35 AM EDT (04:35 UTC)
Expired
Aug 16, 2021, 1:07 AM EDT
In force
32 min
Issued by
NWS Key West, FL
Area
Storm-based polygon
Hail
0.0 in
Wind
34.0 mph

What forecasters said that day

The local office's own words before this special marine warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Key West, FL wrote its last area forecast discussion before this special marine warning went out at Aug 15, 4:47 PM EDT, 7 hours 48 minutes earlier.

Area forecast discussion, Aug 15, 4:47 PM EDT, 7 hours 48 minutes before
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Hazardous weather outlook, Aug 15, 6:34 AM EDT, 18 hours 1 minute before
Hazardous Weather Outlook
National Weather Service Key West FL
634 AM EDT Sun Aug 15 2021

FLZ076>078-GMZ031>035-042>044-052>055-072>075-161045-
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-
634 AM EDT Sun Aug 15 2021

This Hazardous Weather Outlook is for the Florida Keys and
adjacent coastal waters.

.DAY ONE...TODAY AND TONIGHT

Remnants of Fred will track northwest away from the Dry Tortugas
this morning, then potentially strengthen into a tropical storm as
it enters the southeastern Gulf of Mexico. Hazards for the
Florida Keys will be hazardous marine conditions, possible
waterspouts. Thundery squalls will be capable of localized wind
gusts near 40 knots and lightning strikes. Conditions will improve
later this morning. Elsewhere, lingering showers and isolated
thunderstorms will occasionally pass across the Florida Keys
today.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

Isolated thunderstorms will be possible Monday through Friday.
The primary thunderstorm hazards will be lightning strikes.

The long range forecast for Tropical Storm Grace indicates a
persistent path to the west-northwest through the Greater
Antilles, then the Bahamas, and possibly into portions of the
Florida Keys and South Florida in four to five days. It is still
too early to discuss all of the possible impacts, although
confidence in another round of locally heavy rainfall is
increasing.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

The office that day

Everything else NWS Key West, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 15, 8:30 PM EDTSpecial Marine WarningKEY60 min
Aug 15, 8:48 PM EDTSpecial Marine WarningKEY42 min
Aug 15, 9:33 PM EDTSpecial Marine WarningKEY57 min
Aug 15, 10:29 PM EDTSpecial Marine WarningKEY61 min
Aug 16, 1:04 AM EDTSpecial Marine WarningKEY41 min

Nearby

Special Marine Warnings in Florida, 2021Every special marine warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.