Alert archive / Florida / Special Weather Statements in 2016

Special Weather Statement, NWS Key West, FL

January 15, 2016

NWS Key West, FL issued this special weather statement at Jan 15, 2016, 3:15 PM EST. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jan 15, 2016, 3:15 PM EST (20:15 UTC)
Expired
Jan 15, 2016, 4:00 PM EST
In force
45 min
Issued by
NWS Key West, FL

The radar

The Key West radar (KBYX), 79 km from the middle of the area, began a volume at 20:17 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Key West, FL (KEYW), launched 12:00Z, 8.3 hours before the alert went out and 82 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Key West, FL at 12:00Z on 2016-01-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 224 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Key West, FL at 12:00Z on 2016-01-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 291 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
224 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
773 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
291 m²/s²
0-3 km storm-relative helicity
313 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.8

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 weather statement went out at Jan 15, 10:40 AM EST, 4 hours 35 minutes earlier.

Area forecast discussion, Jan 15, 10:40 AM EST, 4 hours 35 minutes before
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
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Hazardous weather outlook, Jan 15, 5:37 AM EST, 9 hours 38 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE KEY WEST FL
537 AM EST FRI JAN 15 2016

FLZ076>078-GMZ031>035-042>044-052>055-072>075-161100-
MONROE UPPER KEYS-MONROE MIDDLE KEYS-MONROE LOWER KEYS-
FLORIDA BAY INCLUDING BLACKWATER SOUND, BUTTONWOOD SOUND, AND
BARNES SOUND-
BAYSIDE AND GULFSIDE 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-
537 AM EST FRI JAN 15 2016

...STRONG THUNDERSTORMS POSSIBLE TODAY AND EARLY SUNDAY MORNING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE FLORIDA KEYS AND ADJACENT
COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT

STRONG THUNDERSTORMS ARE POSSIBLE TODAY AS A LOW PRESSURE SYSTEM
RAPIDLY PROGRESSES TO THE NORTHEAST UP THE SOUTHEAST COAST OF THE
UNITED STATES. THE MOST INTENSE THUNDERSTORMS COULD PRODUCE WIND
GUSTS NEAR 50 MPH AND AN ISOLATED WATERSPOUT OR TORNADO. A SMALL
CRAFT ADVISORY IS IN EFFECT FOR ALL KEYS COASTAL WATERS DUE TO
SUSTAINED SOUTHEAST TO SOUTH SURFACE WINDS NEAR 25 KNOTS AND
GUSTY...SHIFTING TO WEST AND DECREASING TO NEAR 20 KNOTS THIS
AFTERNOON.

A SMALL CRAFT ADVISORY MAY BE REQUIRED FOR ALL KEYS COASTAL WATERS
TONIGHT.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME FOR SATURDAY.

STRONG THUNDERSTORMS ARE POSSIBLE AFTER MIDNIGHT SATURDAY NIGHT INTO
EARLY SUNDAY MORNING AS A LOW PRESSURE SYSTEM RAPIDLY PROGRESSES
EASTWARD THROUGH THE NORTHERN GULF OF MEXICO. THE MOST INTENSE
THUNDERSTORMS COULD PRODUCE WIND GUSTS NEAR 55 MPH AND AN ISOLATED
WATERSPOUT OR TORNADO.

A SMALL CRAFT ADVISORY WILL LIKELY BE REQUIRED FOR ALL KEYS COASTAL
WATERS SATURDAY NIGHT AND SUNDAY. A SMALL CRAFT ADVISORY MAY BE
REQUIRED FOR ALL KEYS COASTAL WATERS SUNDAY NIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME FOR MONDAY THROUGH
THURSDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED.

FOR MORE INFORMATION...VISIT THE FLORIDA KEYS NATIONAL WEATHER
SERVICE WEBSITE AT WEATHER.GOV/KEY.

BS

In the hours before

Special weather statement, Jan 15, 12:57 PM EST, 2 hours 18 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KEY WEST FL
1257 PM EST FRI JAN 15 2016

FLC087-151845-
LOWER KEYS IN MONROE FL-
1257 PM EST FRI JAN 15 2016

...SIGNIFICANT WEATHER ADVISORY FOR LOWER KEYS IN MONROE COUNTY UNTIL
145 PM EST...

AT 1257 PM EST...A STRONG THUNDERSTORM NEAR SUNSET KEY...OR NEAR
BOCA CHICA CHANNEL BRIDGE...WAS MOVING NORTHEAST AT 30 MPH.

WINDS NEAR 50 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
BOCA CHICA CHANNEL BRIDGE...BIG COPPITT KEY...BOCA CHICA...BAY
POINT...SHARK KEY...SUMMERLAND KEY...SADDLEBUNCH KEYS...UPPER
SUGARLOAF KEY...SUGARLOAF KEY AND CUDJOE KEY.

THIS INCLUDES US 1 BETWEEN MILE MARKERS 1 AND 24.

REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT...OR YOU CAN CALL THE NATIONAL WEATHER SERVICE
IN KEY WEST DIRECTLY AT 3 0 5...2 9 6...1 3 1 6...EXTENSION 3.

LAT...LON 2460 8170 2460 8168 2463 8175 2463 8173
      2460 8166 2461 8167 2465 8173 2461 8161
      2467 8158 2468 8166 2467 8157 2476 8149
      2469 8154 2465 8142 2455 8181
TIME...MOT...LOC 1757Z 240DEG 24KT 2453 8177

KN
Local storm report, Jan 15, 2:10 PM EST, 1 hour 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KEY WEST FL
210 PM EST FRI JAN 15 2016

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

1257 PM     TSTM WND GST     KEY WEST                24.56N 81.78W
01/15/2016  M48 MPH          LOWER KEYS IN MONR FL   OFFICIAL NWS OBS

            THE WFO KEY WEST RSOIS MEASURED A THUNDERSTORM WIND GUST
            OF 42 KNOTS...48 MPH.

0100 PM     TSTM WND GST     KEY WEST                24.56N 81.78W
01/15/2016  M43 MPH          LOWER KEYS IN MONR FL   ASOS

            THE ASOS AT KEY WEST INTERNATIONAL AIRPORT MEASURED A
            THUNDERSTORM WIND GUST OF 37 KNOTS...43 MPH.

&&

COTTRILL
Special weather statement, Jan 15, 2:43 PM EST, 32 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KEY WEST FL
243 PM EST FRI JAN 15 2016

FLC087-152015-
UPPER KEYS IN MONROE FL-MIDDLE KEYS IN MONROE FL-
243 PM EST FRI JAN 15 2016

...SIGNIFICANT WEATHER ADVISORY FOR UPPER KEYS AND MIDDLE KEYS IN
MONROE COUNTIES UNTIL 315 PM EST...

AT 241 PM EST...A STRONG THUNDERSTORM NEAR GRASSY KEY...OR NEAR
MARATHON...MOVING NORTHEAST AT 30 MPH.

WINDS UP TO 50 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
MARATHON...EAST END OF CHANNEL 5 BRIDGE...CHANNEL 5 BRIDGE...EAST END
OF LONG KEY VIADUCT...LONG KEY VIADUCT...LOWER MATECUMBE KEY...CRAIG
KEY...DUCK KEY...LONG KEY AND CONCH KEY.

THIS INCLUDES US 1 BETWEEN MILE MARKERS 52 AND 76.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

OCCASIONAL LIGHTNING AND TORRENTIAL RAINFALL IS ALSO OCCURRING WITH
THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR
VEHICLE THROUGH FLOODED ROADWAYS.

&&

REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT...OR YOU CAN CALL THE NATIONAL WEATHER SERVICE
IN KEY WEST DIRECTLY AT 3 0 5...2 9 6...1 3 1 6...EXTENSION 3.

LAT...LON 2472 8107 2474 8104 2473 8104 2475 8096
      2478 8093 2479 8088 2488 8069 2483 8076
      2484 8077 2481 8080 2473 8100 2472 8102
      2473 8103
TIME...MOT...LOC 1941Z 246DEG 27KT 2472 8098

KN
Special weather statement, Jan 15, 3:15 PM EST, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KEY WEST FL
315 PM EST FRI JAN 15 2016

FLC087-152100-
UPPER KEYS IN MONROE FL-MIDDLE KEYS IN MONROE FL-
315 PM EST FRI JAN 15 2016

...SIGNIFICANT WEATHER ADVISORY FOR UPPER KEYS IN MONROE AND MIDDLE
KEYS IN MONROE COUNTIES UNTIL 400 PM EST...

AT 314 PM EST...A CLUSTER OF STRONG THUNDERSTORMS IS OVER THE EAST
END OF SEVEN MILE BRIDGE...MOVING EAST AT 35 MPH.

WIND GUSTS UP TO 55 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
MARATHON...LONG KEY VIADUCT...WEST END OF CHANNEL 5 BRIDGE...EAST END
OF CHANNEL 5 BRIDGE...CHANNEL 5 BRIDGE...EAST END OF LONG KEY
VIADUCT...WEST END OF LONG KEY VIADUCT...CRAIG KEY...LONG KEY AND
DUCK KEY.

THIS INCLUDES US 1 BETWEEN MILE MARKERS 47 AND 73.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
OFFICE IN KEY WEST.

&&

REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT...OR YOU CAN CALL THE NATIONAL WEATHER SERVICE
IN KEY WEST DIRECTLY AT 3 0 5...2 9 6...1 3 1 6...EXTENSION 3.

LAT...LON 2471 8112 2474 8104 2473 8104 2474 8099
      2490 8070 2481 8086 2488 8069 2486 8073
      2483 8076 2484 8077 2481 8080 2472 8102
      2471 8107 2470 8108 2469 8108 2469 8111
TIME...MOT...LOC 2014Z 258DEG 29KT 2470 8112

FUTTERMAN

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 15, 11:38 AM ESTSpecial Marine WarningKEY52 min
Jan 15, 12:57 PM ESTSpecial Weather StatementKEY48 min
Jan 15, 1:00 PM ESTSpecial Marine WarningKEY60 min
Jan 15, 1:17 PM ESTSpecial Marine WarningKEY58 min
Jan 15, 1:31 PM ESTSpecial Marine WarningKEY59 min
Jan 15, 2:15 PM ESTSpecial Marine WarningKEY60 min
Jan 15, 2:37 PM ESTSpecial Marine WarningKEY68 min
Jan 15, 2:43 PM ESTSpecial Weather StatementKEY32 min
Jan 15, 2:53 PM ESTSpecial Marine WarningKEY52 min
Jan 15, 3:13 PM ESTSpecial Marine WarningKEY62 min
Jan 15, 3:19 PM ESTSpecial Marine WarningKEY56 min
Jan 15, 3:28 PM ESTTornado WarningKEYMonroe14 min
Jan 15, 3:53 PM ESTSpecial Marine WarningKEY67 min
Jan 15, 3:54 PM ESTSpecial Marine WarningKEY66 min
Jan 15, 4:27 PM ESTSpecial Marine WarningKEY63 min

Nearby

Special Weather Statements in Florida, 2016Every special weather statement in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.