Alert archive / Florida / Tornado Warnings in 2012

Tornado Warning 1, NWS Key West, FL

May 16, 2012Monroe County, Florida

NWS Key West, FL issued this tornado warning at May 16, 2012, 12:36 AM EDT for Monroe County, Florida. It was in force for 24 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
May 16, 2012, 12:36 AM EDT (04:36 UTC)
Expired
May 16, 2012, 1:00 AM EDT
In force
24 min
Issued by
NWS Key West, FL
Area
Storm-based polygon

County Monroe County, FL

The nearest sounding before it

Key West, FL (KEYW), launched 00:00Z, 4.6 hours before the alert went out and 7 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 00:00Z on 2012-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1147 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Key West, FL at 00:00Z on 2012-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 square meters per square second.19395878Sfc1 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
1147 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
1005 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
-57 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

664 
WFUS52 KKEY 160436
TORKEY
FLC087-160500-
/O.NEW.KKEY.TO.W.0001.120516T0436Z-120516T0500Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE KEY WEST FL
1236 AM EDT WED MAY 16 2012

THE NATIONAL WEATHER SERVICE IN KEY WEST HAS ISSUED A

* TORNADO WARNING FOR...
  LOWER KEYS IN MONROE COUNTY IN FLORIDA...
  THIS INCLUDES THE COMMUNITY OF KEY WEST...

* UNTIL 100 AM EDT

* AT 1230 AM EDT...THE PUBLIC REPORTED A WATERSPOUT NEAR KEY WEST.
  THIS TORNADO WAS NEARLY STATIONARY.

* THE TORNADO WILL BE NEAR...
  THE SOUTH SIDE OF KEY WEST NEAR HIGGS BEACH

WATERSPOUTS THAT MOVE ONSHORE ARE DANGEROUS AND CAN BE DEADLY. IF
THREATENING WEATHER APPROACHES...SEE SHELTER IMMEDIATELY!

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A LOW SPOT ON THE GROUND
AND COVER YOUR HEAD WITH YOUR HANDS.

PLEASE REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE KEY WEST
AT 3 0 5...2 9 5...1 3 1 6...EXTENSION 3.

LAT...LON 2456 8182 2458 8180 2459 8181 2460 8180
      2460 8179 2459 8178 2459 8176 2458 8175
      2455 8174 2454 8175 2454 8181
TIME...MOT...LOC 0434Z 186DEG 1KT 2455 8178

$$

11
1 follow-up statement
907 
WWUS52 KKEY 160458
SVSKEY

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KEY WEST FL
1258 AM EDT WED MAY 16 2012

FLC087-160507-
/O.EXP.KKEY.TO.W.0001.000000T0000Z-120516T0500Z/
LOWER KEYS IN MONROE FL-
1258 AM EDT WED MAY 16 2012

...THE TORNADO WARNING FOR LOWER KEYS IN MONROE COUNTY HAS EXPIRED...

NO FURTHER REPORTS HAVE BEEN RECEIVED REGARDING THE TORNADO OVER 
WATER JUST SOUTH OF KEY WEST. THEREFORE THE TORNADO WARNING FOR KEY 
WEST EXPIRES AT 100 AM.

SHOWERS AND THUNDERSTORMS REMAIN IN THE VICINITY OF KEY WEST. 
RESIDENTS CAN EXPECT PERIODS OF HEAVY RAIN...WIND GUSTS NEAR 30 
MPH...AND A FEW LIGHTNING STRIKES.

STAY TUNED TO NATIONAL WEATHER RADIO FOR FURTHER STATEMENTS AND 
POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE IN KEY WEST.

LAT...LON 2456 8182 2458 8180 2459 8181 2460 8180
      2460 8179 2459 8178 2459 8176 2458 8175
      2455 8174 2454 8175 2454 8181
TIME...MOT...LOC 0452Z 186DEG 1KT 2455 8178

$$

11

The office that day

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

IssuedProductOfficeCountiesLasted
May 16, 12:41 AM EDTSpecial Marine WarningKEY34 min
May 16, 3:50 AM EDTAreal Flood AdvisoryKEYMonroe115 min

Nearby

Tornado Warnings in Florida, 2012Every tornado warning in 2012Tornadoes in 2012

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.