Alert archive / Florida / Tornado Warnings in 2010
Tornado Warning 2, NWS Key West, FL
NWS Key West, FL issued this tornado warning at Dec 18, 2010, 12:07 PM EST for Monroe County, Florida. It was in force for 23 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Dec 18, 2010, 12:07 PM EST (17:07 UTC)
- Expired
- Dec 18, 2010, 12:30 PM EST
- In force
- 23 min
- Issued by
- NWS Key West, FL
- Area
- Storm-based polygon
County Monroe County, FL
The radar
The Key West radar (KBYX), 78 km from the middle of the area, began a volume at 17:07 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Dec 18, 12:27 PM EST | FUNNEL CLOUD | 1 Se Duck Key, FL | A TRAINED WEATHER SPOTTER REPORTED A WELL DEFINED FUNNEL CLOUD EAST OF DUCK KEY LOCATED NEAR THE LONG KEY VIADUCT. DURATION UNKNOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Key West, FL (KEYW), launched 12:00Z, 5.1 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.
- Mixed-layer CAPE
- 807 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 598 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 172 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.1
The text
As transmitted, in the capitals the NWS used until 2016.
172
WFUS52 KKEY 181707
TORKEY
FLC087-181730-
/O.NEW.KKEY.TO.W.0002.101218T1707Z-101218T1730Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE KEY WEST FL
1207 PM EST SAT DEC 18 2010
THE NATIONAL WEATHER SERVICE IN KEY WEST HAS ISSUED A
* TORNADO WARNING FOR...
MIDDLE KEYS IN MONROE COUNTY IN FLORIDA...
UPPER KEYS IN MONROE COUNTY IN FLORIDA...
* UNTIL 1230 PM EST
* AT 1203 PM EST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR GRASSY
KEY...OR 9 MILES EAST OF MARATHON...MOVING NORTHEAST AT 20 MPH.
* THE TORNADO WILL BE NEAR...
DUCK KEY BY 1215 PM EST...
LONG KEY BY 1230 PM EST...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN A MOBILE HOME OR VEHICLE...EVACUATE IT AND GET INSIDE A
SUBSTANTIAL SHELTER. LIE FLAT 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 2483 8076 2483 8077 2481 8079 2479 8089
2476 8089 2477 8093 2471 8101 2472 8107
2478 8094 2478 8092 2480 8085 2484 8081
2483 8078 2484 8075 2486 8075 2485 8071
TIME...MOT...LOC 1707Z 227DEG 16KT 2474 8092
$$
FUTTERMAN1 follow-up statement
907
WWUS52 KKEY 181736
SVSKEY
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KEY WEST FL
1236 PM EST SAT DEC 18 2010
FLC087-181745-
/O.EXP.KKEY.TO.W.0002.000000T0000Z-101218T1730Z/
MIDDLE KEYS IN MONROE FL-UPPER KEYS IN MONROE FL-
1236 PM EST SAT DEC 18 2010
...THE TORNADO WARNING FOR UPPER KEYS IN MONROE AND MIDDLE KEYS IN
MONROE COUNTIES HAS EXPIRED...
KEY WEST RADAR DOES NOT DETECT ANY POSSIBLE TORNADO. THEREFORE THE
WARNING HAS BEEN ALLOWED TO EXPIRE.
LAT...LON 2483 8076 2483 8077 2481 8079 2479 8089
2476 8089 2477 8093 2471 8101 2472 8107
2478 8094 2478 8092 2480 8085 2484 8081
2483 8078 2484 8075 2486 8075 2485 8071
TIME...MOT...LOC 1707Z 227DEG 16KT 2474 8092
$$
FUTTERMANThe office that day
Everything else NWS Key West, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 18, 8:08 AM EST | Special Marine Warning | KEY | 52 min | |
| Dec 18, 10:16 AM EST | Special Marine Warning | KEY | 59 min | |
| Dec 18, 11:01 AM EST | Special Marine Warning | KEY | 47 min | |
| Dec 18, 11:52 AM EST | Special Marine Warning | KEY | 53 min | |
| Dec 18, 12:57 PM EST | Special Marine Warning | KEY | 46 min | |
| Dec 18, 3:40 PM EST | Special Marine Warning | KEY | 65 min | |
| Dec 18, 4:54 PM EST | Special Marine Warning | KEY | 66 min |
Nearby
Tornado Warnings in Florida, 2010Every tornado warning in 2010Tornadoes in 2010
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.