Special Marine Warning 71, NWS Key West, FL

791 
FZUS72 KKEY 281620
MWSKEY

Marine Weather Statement
National Weather Service Key West FL
1220 PM EDT Mon Jun 28 2021

GMZ052-281629-
/O.CAN.KKEY.MA.W.0071.000000T0000Z-210628T1700Z/
1220 PM EDT Mon Jun 28 2021

...THE SPECIAL MARINE WARNING IS CANCELLED...

The affected areas were...
Straits of Florida from Ocean Reef to Craig Key out 20 nm...

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

LAT...LON 2514 8030 2507 8042 2521 8063 2520 8059
      2523 8060 2524 8054 2522 8053 2523 8051
      2522 8051 2522 8052 2520 8050 2522 8050
      2523 8049 2523 8048 2524 8048 2525 8044
      2524 8043 2526 8044 2526 8042 2530 8039
TIME...MOT...LOC 1619Z 135DEG 13KT 2519 8042 

$$

GMZ031-042-281700-
/O.CON.KKEY.MA.W.0071.000000T0000Z-210628T1700Z/
1220 PM EDT Mon Jun 28 2021

...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 100 PM EDT...

For the following areas...
Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood
Sound...
Hawk Channel from Ocean Reef to Craig Key out to the reef...

At 1219 PM EDT, a strong thunderstorm was located over Blackwater
Sound, moving northwest at 15 knots.

HAZARD...Wind gusts 34 knots or greater.

SOURCE...National Weather Service Meteorologist.

IMPACT...Expect wind gusts in excess of 34 knots, suddenly higher 
         waves, frequent lightning, and heavy downpours.

Locations in the warning include...
Buttonwood Sound, Dusenberry Creek, Grouper Creek, Tarpon Basin,
Blackwater Sound, North Nest Key and Jewfish Creek.

LAT...LON 2514 8030 2507 8042 2521 8063 2520 8059
      2523 8060 2524 8054 2522 8053 2523 8051
      2522 8051 2522 8052 2520 8050 2522 8050
      2523 8049 2523 8048 2524 8048 2525 8044
      2524 8043 2526 8044 2526 8042 2530 8039
TIME...MOT...LOC 1619Z 135DEG 13KT 2519 8042 

HAIL...0.00IN
WIND...>34KTS

$$

NB

106 
FZUS72 KKEY 281658
MWSKEY

Marine Weather Statement
National Weather Service Key West FL
1258 PM EDT Mon Jun 28 2021

GMZ031-042-281707-
/O.EXP.KKEY.MA.W.0071.000000T0000Z-210628T1700Z/
1258 PM EDT Mon Jun 28 2021

...THE SPECIAL MARINE WARNING WILL EXPIRE AT 100 PM EDT...

The affected areas were... 
Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood
Sound...
Hawk Channel from Ocean Reef to Craig Key out to the reef...

The thunderstorm has moved out of the area, however, boaters should 
still take precautions for reduced visibility and occasional 
lightning strikes in the area.

LAT...LON 2514 8030 2507 8042 2521 8063 2520 8059
      2523 8060 2524 8054 2522 8053 2523 8051
      2522 8051 2522 8052 2520 8050 2522 8050
      2523 8049 2523 8048 2524 8048 2525 8044
      2524 8043 2526 8044 2526 8042 2530 8039
TIME...MOT...LOC 1657Z 135DEG 13KT 2528 8052 

$$

NB

Area Forecast Discussion
National Weather Service Key West FL
1036 AM EDT Mon Jun 28 2021

.DISCUSSION...
Deep tropical moisture persists across the Florida Keys. The 12Z
KKEY RAOB sampled more than 1.8" of PW, a deep layer of east-
southeasterlies extending from the SFC through 500 MB, moderate ML
instability, and minimal inhibition. No wonder the KBYX radar
detects scattered showers and thunderstorms across the Florida
Keys. The forecast calls for 40-50% chances for the island chain
through the afternoon, with highs near 90 and moderate east to
southeast breezes. No changes needed or planned.

&&

.MARINE...
There are no watches, warnings, or advisories currently in effect
for the coastal waters of the Florida Keys. High pressure
centered over the western North Atlantic will maintain moderate
east to southeast breezes through the next few days. Breezes will
diminish for the second half of the week, as the high weakens and
sags southward across Florida.

&&

.AVIATION...
VFR conditions will prevail at EYW and MTH through the TAF
period. Scattered showers and thunderstorms will continue to move
across the island chain through the afternoon, bringing brief
periods of sub- VFR conditions to the terminals. Due to
uncertainty in timing and location, TEMPOs and amendments are
likely. Outside of any convection, surface winds will be out of
the east to southeast from 8 to 11 knots.

&&

.CLIMATE...
On this day in 1961, the daily record low temperature of 68F was
recorded in Key West. Temperature records date back to 1872.

&&

.PRELIMINARY POINT TEMPS/POPS...
Key West  87  80  87  80 / 40 50 50 50
Marathon  89  80  89  80 / 40 50 50 50

&&

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

Public/Marine/Fire...CLR
Aviation/Nowcasts....NB
Data Acquisition.....KR

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Hazardous Weather Outlook
National Weather Service Key West FL
434 AM EDT Mon Jun 28 2021

FLZ076>078-GMZ031>035-042>044-052>055-072>075-291000-
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-
434 AM EDT Mon Jun 28 2021

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

.DAY ONE...TODAY AND TONIGHT

Isolated thunderstorms are expected. The primary thunderstorm
hazards will be lightning strikes and locally gusty winds.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

Isolated to scattered thunderstorms are expected. The primary
thunderstorm hazards will be lightning strikes and locally gusty
winds.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.