Alert archive / Florida / Special Weather Statements in 2016

Special Weather Statement, NWS Key West, FL

January 17, 2016

NWS Key West, FL issued this special weather statement at Jan 17, 2016, 7:06 AM EST. It was in force for 39 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 17, 2016, 7:06 AM EST (12:06 UTC)
Expired
Jan 17, 2016, 7:45 AM EST
In force
39 min
Issued by
NWS Key West, FL

The radar

The Key West radar (KBYX), 42 km from the middle of the area, began a volume at 12:09 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

Miami, FL (KMFL), launched 12:00Z, 0.1 hours before the alert went out and 159 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, Miami, FL at 12:00Z on 2016-01-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 760 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, Miami, FL at 12:00Z on 2016-01-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 511 square meters per square second.1939587897117Sfc1 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
760 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
723 m above ground
0-6 km bulk shear
80 kt
0-1 km storm-relative helicity
511 m²/s²
0-3 km storm-relative helicity
486 m²/s²
Significant tornado parameter
2.4
Supercell composite
9.2

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 17, 3:19 AM EST, 3 hours 47 minutes earlier.

Area forecast discussion, Jan 17, 3:19 AM EST, 3 hours 47 minutes before
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Hazardous weather outlook, Jan 17, 5:47 AM EST, 1 hour 19 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE KEY WEST FL
547 AM EST SUN JAN 17 2016

FLZ076>078-GMZ031>035-042>044-052>055-072>075-181100-
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-
547 AM EST SUN JAN 17 2016

...STRONG TO SEVERE THUNDERSTORMS POSSIBLE THIS MORNING...
...STRONG WINDS CONTINUING THIS MORNING...

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

.DAY ONE...TODAY AND TONIGHT

A SQUALL LINE WILL PASS THROUGH THE FLORIDA KEYS AND ADJACENT COASTAL
WATERS THIS MORNING...CAPABLE OF PRODUCING WIND GUSTS NEAR 60
MPH...AN ISOLATED WATERSPOUT OR TORNADO...AND FREQUENT LIGHTNING.

A WIND ADVISORY IS IN EFFECT FOR THE FLORIDA KEYS THIS MORNING DUE
TO FREQUENT SOUTHWEST WIND GUSTS 35 TO 45 MPH. THESE WINDS WILL
BECOME WEST LATER THIS MORNING BEFORE DECREASING LATER THIS
AFTERNOON.

A GALE WARNING IS IN EFFECT FOR ALL KEYS COASTAL WATERS THIS MORNING DUE
TO FREQUENT SOUTHWEST WIND GUSTS NEAR 35 KNOTS. THESE WINDS WILL
BECOME WEST BEFORE DECREASING LATER THIS AFTERNOON.

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

WATERS LEVELS ALONG THE GULF AND BAY SIDES OF THE FLORIDA KEYS MAY
REACH ONE TO ONE AND A HALF FEET ABOVE NORMAL LEVELS LATER THIS
MORNING AND EARLY AFTERNOON. SOME OVERTOPPING OF DOCKS AND MINOR
COASTAL FLOODING OF THE LOWEST ELEVATION STREETS MAY OCCUR.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME FOR MONDAY.

A SMALL CRAFT ADVISORY WILL LIKELY BE REQUIRED FOR ALL KEYS COASTAL
WATERS MONDAY NIGHT THROUGH TUESDAY NIGHT. A SMALL CRAFT ADVISORY MAY
BE REQUIRED FOR THE COASTAL WATERS OF THE FLORIDA STRAITS WEDNESDAY.

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

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

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED. INDIVIDUAL SPOTTERS ARE
ENCOURAGED TO REPORT DAMAGING WIND GUSTS TO THE FLORIDA KEYS NATIONAL
WEATHER SERVICE FORECAST OFFICE IN KEY WEST.

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

In the hours before

Special weather statement, Jan 17, 7:06 AM EST, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jan 17, 4:17 AM ESTSpecial Marine WarningKEY88 min
Jan 17, 4:33 AM ESTSpecial Marine WarningKEY87 min
Jan 17, 5:43 AM ESTSpecial Marine WarningKEY62 min
Jan 17, 5:57 AM ESTSpecial Marine WarningKEY63 min
Jan 17, 6:12 AM ESTSevere Thunderstorm WarningKEYMonroe63 min
Jan 17, 6:42 AM ESTSpecial Marine WarningKEY63 min
Jan 17, 7:35 AM ESTSpecial Marine WarningKEY55 min
Jan 17, 7:36 AM ESTSpecial Weather StatementKEY69 min
Jan 17, 8:29 AM ESTSpecial Marine WarningKEY2 hr
Jan 17, 11:49 AM ESTCoastal Flood StatementKEYMonroe7 hr
Jan 17, 12:33 PM ESTSmall Craft AdvisoryKEY3 days

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.