Alert archive / Florida / Tornado Warnings in 2011
Tornado Warning 4, NWS Key West, FL
NWS Key West, FL issued this tornado warning at Dec 27, 2011, 10:00 PM EST for Monroe County, Florida. It was in force for 30 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
- Dec 27, 2011, 10:00 PM EST (03:00 UTC)
- Expired
- Dec 27, 2011, 10:30 PM EST
- In force
- 30 min
- Issued by
- NWS Key West, FL
- Area
- Storm-based polygon
County Monroe County, FL
The radar
The Key West radar (KBYX), 6 km from the middle of the area, began a volume at 03:02 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 00:00Z, 3.0 hours before the alert went out and 10 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.
- Mixed-layer CAPE
- 22 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 1053 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
758
WFUS52 KKEY 280300
TORKEY
FLC087-280330-
/O.NEW.KKEY.TO.W.0004.111228T0300Z-111228T0330Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE KEY WEST FL
1000 PM EST TUE DEC 27 2011
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 1030 PM EST
* AT 957 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
POSSIBLE WATERSPOUT MOVING ONSHORE NEAR BOCA CHICA. THIS WATERSPOUT
IS MOVING EAST AT 30 MPH.
* THE TORNADO WILL BE NEAR...
SHARK KEY BY 1005 PM EST...
BAY POINT BY 1010 PM EST...
SUGARLOAF KEY BY 1015 PM EST...
WATERSPOUTS THAT MOVE ONSHORE ARE DANGEROUS. IF THREATENING WEATHER
APPROACHES...SEE SHELTER IMMEDIATELY!
LAT...LON 2459 8178 2459 8172 2465 8178 2460 8169
2464 8170 2462 8163 2465 8162 2466 8163
2466 8170 2468 8171 2469 8170 2464 8144
2464 8150 2460 8147 2463 8150 2455 8168
2455 8179
TIME...MOT...LOC 0300Z 272DEG 27KT 2461 8168
$$
BS2 follow-up statements
036
WWUS52 KKEY 280315
SVSKEY
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KEY WEST FL
1015 PM EST TUE DEC 27 2011
FLC087-280330-
/O.CON.KKEY.TO.W.0004.000000T0000Z-111228T0330Z/
LOWER KEYS IN MONROE FL-
1015 PM EST TUE DEC 27 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1030 PM EST FOR LOWER
KEYS IN MONROE COUNTY...
AT 1012 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A POSSIBLE TORNADO. THIS TORNADO WAS LOCATED NEAR SHARK
KEY...MOVING EAST AT 30 MPH.
THE TORNADO WILL BE NEAR...
SUGARLOAF KEY BY 1020 PM EST...
IF THREATENING WEATHER APPROACHES...SEE SHELTER IMMEDIATELY!
LAT...LON 2459 8178 2459 8172 2465 8178 2460 8169
2464 8170 2462 8163 2465 8162 2466 8163
2466 8170 2468 8171 2469 8170 2464 8144
2464 8150 2460 8147 2463 8150 2455 8168
2455 8179
TIME...MOT...LOC 0315Z 275DEG 30KT 2462 8161
$$
BS372
WWUS52 KKEY 280328
SVSKEY
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KEY WEST FL
1028 PM EST TUE DEC 27 2011
FLC087-280337-
/O.EXP.KKEY.TO.W.0004.000000T0000Z-111228T0330Z/
LOWER KEYS IN MONROE FL-
1028 PM EST TUE DEC 27 2011
...THE TORNADO WARNING FOR LOWER KEYS IN MONROE COUNTY WILL EXPIRE AT
1030 PM EST...
AT 1027 PM EST...KEY WEST NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATED THAT THE HOOK ECHO ASSOCIATED WITH THE STORM HAS WEAKENED.
THEREFORE...THE TORNADO WARNING...WHICH WAS IN EFFECT FOR THE LOWER
KEY OF MONROE COUNTY...WILL BE ALLOWED TO EXPIRE AT 1030 PM EST.
LAT...LON 2459 8178 2459 8172 2465 8178 2460 8169
2464 8170 2462 8163 2465 8162 2466 8163
2466 8170 2468 8171 2469 8170 2464 8144
2464 8150 2460 8147 2463 8150 2455 8168
2455 8179
TIME...MOT...LOC 0327Z 275DEG 30KT 2461 8150
$$
BSThe office that day
Everything else NWS Key West, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 27, 7:18 PM EST | Special Marine Warning | KEY | 42 min | |
| Dec 27, 7:56 PM EST | Special Marine Warning | KEY | 49 min | |
| Dec 27, 8:41 PM EST | Special Marine Warning | KEY | 49 min | |
| Dec 27, 9:21 PM EST | Special Marine Warning | KEY | 39 min | |
| Dec 27, 9:29 PM EST | Tornado Warning | KEY | Monroe | 31 min |
| Dec 27, 9:54 PM EST | Special Marine Warning | KEY | 51 min | |
| Dec 27, 10:41 PM EST | Special Marine Warning | KEY | 34 min | |
| Dec 28, 4:27 AM EST | Small Craft Advisory for Hazardous Seas | KEY | 12 hr |
Nearby
Tornado Warnings in Florida, 2011Every tornado warning in 2011Tornadoes in 2011
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.