Alert archive / Florida / Special Marine Warnings in 2021

Special Marine Warning 68, NWS Key West, FL

June 24, 2021

NWS Key West, FL issued this special marine warning at Jun 24, 2021, 12:06 PM EDT. It was in force for 54 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: Jun 24, 2021, 12:06 PM EDT (16:06 UTC)
Expired: Jun 24, 2021, 1:00 PM EDT
In force: 54 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 Jun 24, 10:47 AM EDT, 1 hour 19 minutes earlier.

Area forecast discussion, Jun 24, 10:47 AM EDT, 1 hour 19 minutes before

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Hazardous weather outlook, Jun 24, 5:54 AM EDT, 6 hours 12 minutes before

Hazardous Weather Outlook
National Weather Service Key West FL
554 AM EDT Thu Jun 24 2021

FLZ076>078-GMZ031>035-042>044-052>055-072>075-251000-
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-
554 AM EDT Thu Jun 24 2021

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

.DAY ONE...TODAY AND TONIGHT

Scattered thunderstorms are expected. The primary thunderstorm
hazard will be lightning strikes and locally strong wind gusts of
30 to 40 mph.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

Isolated to scattered thunderstorms are expected. The primary
thunderstorm hazard will be lightning strikes and locally strong
wind gusts of 30 to 40 mph.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

In the hours before

Special weather statement, Jun 24, 9:55 AM EDT, 2 hours 11 minutes before

Special Weather Statement
National Weather Service Key West FL
955 AM EDT Thu Jun 24 2021

FLZ078-241500-
Monroe Lower Keys FL-
955 AM EDT Thu Jun 24 2021

...SIGNIFICANT WEATHER ADVISORY FOR LOWER KEYS IN MONROE COUNTY UNTIL
1100 AM EDT...

At 953 AM EDT, National Weather Service Meteorologists detected a
strong thunderstorm 9 miles south of Sugarloaf Key, or 11 miles
southeast of Big Coppitt Key, moving west at 20 mph.

Winds in excess of 45 mph will be possible with this storm.

Locations impacted include...
Key West, Big Coppitt Key, Boca Chica Channel Bridge, Boca Chica,
Fleming Key, Key Haven, Geiger Key, Sunset Key and Shark Key.

This includes US 1 between mile markers 0 and 12.

LAT...LON 2456 8189 2457 8182 2464 8178 2460 8180
      2457 8179 2457 8175 2464 8173 2459 8174
      2463 8169 2458 8173 2458 8172 2461 8169
      2461 8170 2462 8166 2460 8157 2456 8168
TIME...MOT...LOC 1353Z 099DEG 18KT 2449 8152

BT

Local storm report, Jun 24, 11:41 AM EDT, 25 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	Lasted
Jun 24, 9:37 AM EDT	Special Marine Warning	KEY	38 min
Jun 24, 9:55 AM EDT	Special Weather Statement	KEY	65 min
Jun 24, 9:59 AM EDT	Special Marine Warning	KEY	61 min

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.