Alert archive / Florida / Special Marine Warnings in 2021

Special Marine Warning 274, NWS Key West, FL

October 29, 2021

NWS Key West, FL issued this special marine warning at Oct 29, 2021, 6:28 AM EDT. It was in force for 41 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: Oct 29, 2021, 6:28 AM EDT (10:28 UTC)
Expired: Oct 29, 2021, 7:09 AM EDT
In force: 41 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 Oct 29, 6:07 AM EDT, 21 minutes earlier.

Area forecast discussion, Oct 29, 6:07 AM EDT, 21 minutes before

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Hazardous weather outlook, Oct 29, 4:27 AM EDT, 2 hours 1 minute before

Hazardous Weather Outlook
National Weather Service Key West FL
427 AM EDT Fri Oct 29 2021

FLZ076>078-GMZ031>035-042>044-052>055-072>075-300830-
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-
427 AM EDT Fri Oct 29 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 all waters for southwest
to west winds of 20 to 25 knots.

Isolated thunderstorms will be possible this morning as a cold
front moves across the eastern portions of the island chain and
into the Hawk Channel and Straits of Florida. The primary
thunderstorm hazards will be possible cloud to surface lightning
strikes and strong gusty winds.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A Small Craft Advisory will likely be needed through Saturday in
all coastal waters.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

In the hours before

Local storm report, Oct 29, 2:01 AM EDT, 4 hours 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
201 AM EDT FRI OCT 29 2021

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

0146 AM     MARINE TSTM WIND 14 NW KEY WEST          24.71N 81.93W
10/29/2021  M47 MPH          GMZ033             FL   MESONET

            A SOUTHWEST WIND GUST OF 41 KNOTS, OR 47 MPH, WAS
            RECORDED BY THE WEATHERFLOW MESONET SITE AT SMITH SHOAL
            LIGHT AT 146 AM EDT.

&&

JACOBSON

Local storm report, Oct 29, 2:55 AM EDT, 3 hours 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
255 AM EDT FRI OCT 29 2021

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

0237 AM     MARINE TSTM WIND KEY WEST                24.56N 81.78W
10/29/2021  M44.00 MPH       LOWER KEYS IN MONR FL   OFFICIAL NWS OBS

            A WEST WIND GUST OF 38 KNOTS, OR 44 MPH, WAS RECORDED BY
            THE FLORIDA KEYS NWS RSOIS AT 237 AM EDT.

0245 AM     MARINE TSTM WIND 2 SW BIG COPPITT KEY    24.58N 81.68W
10/29/2021  M43.00 MPH       LOWER KEYS IN MONR FL   ASOS

            A WEST WIND GUST OF 37 KNOTS, OR 43 MPH, WAS RECORDED BY
            THE NAS KEY WEST ASOS ON BOCA CHICA KEY AT 245 AM EDT.

&&

JACOBSON

Local storm report, Oct 29, 3:07 AM EDT, 3 hours 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
307 AM EDT FRI OCT 29 2021

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

0240 AM     MARINE TSTM WIND 10 SW KEY WEST          24.46N 81.88W
10/29/2021  M40 MPH          GMZ044             FL   C-MAN STATION

            A WEST WIND GUST OF 40 KNOTS, OR 46 MPH, WAS RECORDED BY
            THE SAND KEY C-MAN STATION AT 240 AM EDT.

&&

JACOBSON

Local storm report, Oct 29, 3:16 AM EDT, 3 hours 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
316 AM EDT FRI OCT 29 2021

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

0230 AM     MARINE TSTM WIND 2 WSW KEY WEST          24.56N 81.81W
10/29/2021  M40.00 MPH       LOWER KEYS IN MONR FL   OTHER FEDERAL

            A WEST NORTHWEST WIND GUST OF 35 KNOTS, OR 40 MPH, WAS
            RECORDED BY THE NATIONAL OCEAN SERVICE WEATHER STATION AT
            KEY WEST HARBOR AT 230 AM EDT.

&&

JACOBSON

Local storm report, Oct 29, 5:31 AM EDT, 57 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 28, 8:10 PM EDT	Special Marine Warning	KEY		34 min
Oct 28, 8:36 PM EDT	Special Marine Warning	KEY		54 min
Oct 28, 9:29 PM EDT	Special Marine Warning	KEY		61 min
Oct 28, 9:50 PM EDT	Special Marine Warning	KEY		41 min
Oct 28, 9:56 PM EDT	Special Marine Warning	KEY		39 min
Oct 28, 10:30 PM EDT	Special Marine Warning	KEY		27 min
Oct 28, 10:47 PM EDT	Special Marine Warning	KEY		46 min
Oct 28, 10:56 PM EDT	Special Marine Warning	KEY		53 min
Oct 28, 11:31 PM EDT	Special Marine Warning	KEY		48 min
Oct 29, 12:16 AM EDT	Special Marine Warning	KEY		59 min
Oct 29, 12:32 AM EDT	Special Marine Warning	KEY		39 min
Oct 29, 12:59 AM EDT	Special Marine Warning	KEY		61 min
Oct 29, 1:51 AM EDT	Special Marine Warning	KEY		54 min
Oct 29, 1:53 AM EDT	Special Marine Warning	KEY		67 min
Oct 29, 2:44 AM EDT	Special Marine Warning	KEY		61 min
Oct 29, 2:58 AM EDT	Special Marine Warning	KEY		62 min
Oct 29, 3:40 AM EDT	Special Marine Warning	KEY		43 min
Oct 29, 3:57 AM EDT	Special Marine Warning	KEY		63 min
Oct 29, 4:55 AM EDT	Special Marine Warning	KEY		65 min
Oct 29, 5:13 AM EDT	Special Marine Warning	KEY		62 min
Oct 29, 5:49 AM EDT	Special Marine Warning	KEY		31 min
Oct 29, 7:07 PM EDT	Coastal Flood Statement	KEY	Monroe	33 hr

Nearby

Special Marine Warnings in Florida, 2021 Every 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.