Alert archive / Florida / Tornado Warnings in 2012

Tornado Warning 2, NWS Key West, FL

June 4, 2012Monroe County, Florida

NWS Key West, FL issued this tornado warning at Jun 4, 2012, 7:56 PM EDT for Monroe County, Florida. It was in force for 23 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
Jun 4, 2012, 7:56 PM EDT (23:56 UTC)
Expired
Jun 4, 2012, 8:19 PM EDT
In force
23 min
Issued by
NWS Key West, FL
Area
Storm-based polygon

County Monroe County, FL

The radar

The Miami radar (KAMX), 56 km from the middle of the area, began a volume at 23:59 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, 11.9 hours before the alert went out and 81 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 2012-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1321 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, Miami, FL at 12:00Z on 2012-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 square meters per square second.193958Sfc1 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
1321 J/kg
Mixed-layer CIN
-90 J/kg
Mixed-layer LCL
928 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
37 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.3

Open this sounding in Storm Lab

The text

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

202 
WFUS52 KKEY 042356
TORKEY
FLC087-050030-
/O.NEW.KKEY.TO.W.0002.120604T2356Z-120605T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE KEY WEST FL
756 PM EDT MON JUN 4 2012

THE NATIONAL WEATHER SERVICE IN KEY WEST HAS ISSUED A

* TORNADO WARNING FOR...
  MONROE/UPPER KEYS COUNTY IN SOUTHEAST FLORIDA...
  THIS INCLUDES THE COMMUNITY OF KEY LARGO...

* UNTIL 830 PM EDT

* AT 751 PM EDT...LOCAL LAW ENFORCEMENT REPORTED A WATERSPOUT NEAR
  ROCK HARBOR...OR NEAR KEY LARGO...MOVING EAST AT 10 MPH.

* THE TORNADO WILL BE NEAR...
  ROCK HARBOR...
  KEY LARGO...

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

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 2510 8040 2509 8042 2507 8044 2507 8048
      2508 8047 2510 8049 2512 8049 2512 8047
      2510 8046 2511 8044 2513 8047 2514 8046
      2513 8038
TIME...MOT...LOC 2356Z 279DEG 9KT 2510 8048

$$

11
1 follow-up statement
048 
WWUS52 KKEY 050019
SVSKEY

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KEY WEST FL
819 PM EDT MON JUN 4 2012

FLC087-050027-
/O.CAN.KKEY.TO.W.0002.000000T0000Z-120605T0030Z/
MONROE/UPPER KEYS FL-
819 PM EDT MON JUN 4 2012

...THE TORNADO WARNING FOR MONROE UPPER KEYS COUNTY IS CANCELED...

NO FURTHER REPORTS OF WATERSPOUTS MOVING ASHORE HAVE BEEN RECEIVED 
SINCE THE INITIAL REPORTS. IN ADDITION...SHOWER ACTIVITY HAS LARGELY 
MOVED EAST OF THE UPPER KEYS. THEREFORE THERE IS NO FURTHER THREAT 
OF WATERSPOUTS MOVING ASHORE...AND THE WARNING IS CANCELLED.

LAT...LON 2510 8040 2509 8042 2507 8044 2507 8048
      2508 8047 2510 8049 2512 8049 2512 8047
      2510 8046 2511 8044 2513 8047 2514 8046
      2513 8038
TIME...MOT...LOC 0017Z 279DEG 9KT 2509 8042

$$

11

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 4, 7:58 PM EDTSpecial Marine WarningKEY32 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; radar from the NEXRAD Level II archive.