Special Marine Warning 97, NWS Key West, FL

431 
FZUS72 KKEY 120358
MWSKEY

Marine Weather Statement
National Weather Service Key West FL
1158 PM EDT Sun Jul 11 2021

GMZ031-042-052-120407-
/O.EXP.KKEY.MA.W.0097.000000T0000Z-210712T0400Z/
1158 PM EDT Sun Jul 11 2021

...THE SPECIAL MARINE WARNING WILL EXPIRE AT 1200 AM EDT...

The affected areas were... 
Hawk Channel and Straits of Florida from Ocean Reef to Craig Key out
20 nm...
Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood
Sound...

The thunderstorm has moved out of the area and no longer poses a 
significant threat to boaters.

LAT...LON 2532 8026 2522 8009 2508 8018 2521 8049
      2522 8049 2521 8051 2523 8055 2524 8053
      2523 8050 2524 8049 2523 8047 2526 8044
      2525 8044 2527 8042 2526 8042 2530 8039
      2528 8036 2528 8033 2535 8026
TIME...MOT...LOC 0357Z 121DEG 24KT 2529 8037 

$$

Jacobson

Area Forecast Discussion
National Weather Service Key West FL
1033 PM EDT Sun Jul 11 2021

.DISCUSSION...
Currently - A surface through lower level Atlantic ridge extends
westward across Florida and continues through the Gulf of Mexico.
This is producing moderate easterly breezes across the Keys and
surrounding waters. Despite a mid and upper level low moving
northwestward through the northern Bahamas with a subtle lower
level reflection, lower level moisture has decreased quite a bit
with the arrival of some drier air. Available CAPE is lower this
evening with some lower level inhibition. As a result, convective
coverage on local radars is quite a bit lower than last evening.
Most of the activity is relegated to the deep gulf waters and over
our eastern Florida Straits.

Short Term Update - The mid and upper level low will continue to
roll northwestward towards the central Florida coast through the
overnight and any lower level reflection will wash out as the
upper level low moves further into the ridge. Forecast soundings
and plan views suggest lower level moisture will increase
modestly and inhibition will weaken. The ridge will maintain
moderate easterly breezes, likely a touch of freshening.
Consequently, shower activity should trend upwards overnight. For
now, the current low chance PoPs appears to be on track. Overnight
lows will be in the upper 70s to near 80, with some places
experiencing some rain cooling. No update planned for the local
forecast.

&&

.MARINE...
An Atlantic ridge across Florida will maintain easterly breezes
across Keys waters through the overnight period. Winds will likely
come up a bit over the next couple of hours. For this, a caution
will remain in place for the nearshore Gulf waters, Hawk Channel
and the Florida Straits.

&&

.AVIATION...
VFR conditions will prevail at both the Key West and Marathon
terminals overnight and tomorrow morning. Dry conditions will
dominate overnight, with little shower or thunderstorm coverage
expected. Beginning tomorrow morning, the atmosphere begins to
moisten again, and rain chances will increase. This is reflected in
the terminal forecasts with the inclusion of vicinity showers
beginning at 10Z for both terminals. Surface winds will be from the
east near 10 knots, with occasional gusts around 15 knots.

&&

.KEY WATCHES/WARNINGS/ADVISORIES...
FL...None.
GM...None.

&&

Public/Marine/Fire...11
Aviation/Nowcasts....Devanas
Data Acquisition.....DR

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Hazardous Weather Outlook
National Weather Service Key West FL
429 AM EDT Sun Jul 11 2021

FLZ076>078-GMZ031>035-042>044-052>055-072>075-120830-
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-
429 AM EDT Sun Jul 11 2021

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

.DAY ONE...TODAY AND TONIGHT

Scattered thunderstorms are expected across portions of the
Florida Keys and adjacent coastal waters today and tonight. The
primary thunderstorm hazards will be lightning strikes and gusty
winds.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A Small Craft Advisory may be required on Monday night for
portions of the Florida Keys coastal waters.

Scattered thunderstorms are expected Monday through Tuesday
night and isolated thunderstorms are expected Wednesday through
Saturday. The primary thunderstorms hazards will be lightning
strikes and gusty winds.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

NB