Alert archive / Florida / Special Marine Warnings in 2021

Special Marine Warning 183, NWS Key West, FL

August 25, 2021

NWS Key West, FL issued this special marine warning at Aug 25, 2021, 11:07 AM EDT. It was in force for 53 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 25, 2021, 11:07 AM EDT (15:07 UTC)
Expired
Aug 25, 2021, 12:00 PM EDT
In force
53 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 25, 9:05 AM EDT, 2 hours 2 minutes earlier.

Area forecast discussion, Aug 25, 9:05 AM EDT, 2 hours 2 minutes before
Area Forecast Discussion
National Weather Service Key West FL
905 AM EDT Wed Aug 25 2021

.UPDATE...
Updating the marine zone 033 and 034 to Small Craft Advisory for
today. Otherwise... storms that were moving through the upper Keys
have now weaken as they head into the lower Keys. Will continue to
monitor storm development.

&&

.KEY WATCHES/WARNINGS/ADVISORIES...
FL...None.
GM...Small Craft Advisory until 5 AM EDT Thursday for GMZ031>035-
     042>044-052>055-072>075.

&&

Public/Marine/Fire...K. Kuyper
Aviation/Nowcasts....LIW
Data Acquisition.....DR

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Hazardous weather outlook, Aug 25, 5:46 AM EDT, 5 hours 21 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Key West FL
546 AM EDT Wed Aug 25 2021

FLZ076>078-GMZ031>035-042>044-052>055-072>075-261000-
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-
546 AM EDT Wed Aug 25 2021

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

.DAY ONE...TODAY AND TONIGHT

A Small Craft Advisory is in effect for the Straits of Florida,
Hawk Channel, Florida Bay and the nearshore Gulf waters, due to
northeast to east winds increasing to near 20 knots, and seas
building to 4 to 7 feet in the Straits of Florida. Small Craft
Advisory conditions are likely to continue across much or all of
the Keys coastal waters tonight.

Scattered thunderstorms are expected today and tonight. The
primary hazards will be lightning strikes and gusty winds.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

Isolated thunderstorms will be possible thorugh the period. The
primary hazards will be lightning strikes and locally gusty winds.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

In the hours before

Local storm report, Aug 25, 6:04 AM EDT, 5 hours 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
604 AM EDT WED AUG 25 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0545 AM     MARINE TSTM WIND 11 ESE CARD SOUND BRIDG 25.23N 80.21W
08/25/2021  M43 MPH          GMZ052             FL   MESONET

            AN EAST-SOUTHEAST WIND GUST OF 37 KTS, OR 43 MPH, WAS
            RECORDED BY THE WEATHERFLOW MESONET SITE AT CARYSFORT
            REEF LIGHT AT 545 AM EDT.

&&

JACOBSON
Local storm report, Aug 25, 6:20 AM EDT, 4 hours 47 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
620 AM EDT WED AUG 25 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0605 AM     MARINE TSTM WIND 11 ESE CARD SOUND BRIDG 25.23N 80.21W
08/25/2021  M43.00 MPH       GMZ052             FL   MESONET

            AN EAST-SOUTHEAST WIND GUST OF 37 KTS, OR 43 MPH, WAS
            RECORDED BY THE WEATHERFLOW MESONET SITE AT CARYSFORT
            REEF LIGHT AT 605 AM EDT.

0617 AM     MARINE TSTM WIND 4 SE TEATABLE KEY       24.86N 80.62W
08/25/2021  M46.00 MPH       GMZ042             FL   MESONET

            AN EAST-NORTHAST WIND GUST OF 40 KTS, OR 46 MPH, WAS
            RECORDED BY THE WEATHERFLOW MESONET SITE AT ALLIGATOR
            REEF LIGHT AT 617 AM EDT.

&&

JACOBSON
Local storm report, Aug 25, 8:03 AM EDT, 3 hours 4 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 25, 4:17 AM EDTSmall Craft AdvisoryKEY24 hr
Aug 25, 5:06 AM EDTSpecial Marine WarningKEY24 min
Aug 25, 5:27 AM EDTSpecial Marine WarningKEY33 min
Aug 25, 5:53 AM EDTSpecial Marine WarningKEY67 min
Aug 25, 6:58 AM EDTSpecial Marine WarningKEY32 min
Aug 25, 7:26 AM EDTSpecial Marine WarningKEY34 min
Aug 25, 10:19 AM EDTSpecial Marine WarningKEY56 min
Aug 25, 11:54 AM EDTSpecial Marine WarningKEY66 min
Aug 25, 12:21 PM EDTSpecial Marine WarningKEY54 min
Aug 25, 12:52 PM EDTSpecial Marine WarningKEY68 min
Aug 25, 12:54 PM EDTSpecial Marine WarningKEY66 min
Aug 25, 1:52 PM EDTSpecial Marine WarningKEY53 min
Aug 25, 2:12 PM EDTSpecial Marine WarningKEY63 min
Aug 25, 2:39 PM EDTSpecial Marine WarningKEY66 min
Aug 25, 7:01 PM EDTSpecial Marine WarningKEY29 min
Aug 25, 7:03 PM EDTSpecial Weather StatementKEY27 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.