Alert archive / Florida / Tornado Warnings in 2008
Tornado Warning 8, NWS Key West, FL
NWS Key West, FL issued this tornado warning at Aug 30, 2008, 10:37 PM EDT for Monroe County, Florida. It was in force for 12 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
- Aug 30, 2008, 10:37 PM EDT (02:37 UTC)
- Expired
- Aug 30, 2008, 10:49 PM EDT
- In force
- 12 min
- Issued by
- NWS Key West, FL
- Area
- Storm-based polygon
County Monroe County, FL
The radar
The Miami radar (KAMX), 89 km from the middle of the area, began a volume at 02:40 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 30, 5:05 PM EDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Key West, FL (KEYW), launched 00:00Z, 2.6 hours before the alert went out and 106 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
- 671 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 734 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 320 m²/s²
- 0-3 km storm-relative helicity
- 454 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 6.2
The text
As transmitted, in the capitals the NWS used until 2016.
000
WFUS52 KKEY 310237
TORKEY
FLC087-310300-
/O.NEW.KKEY.TO.W.0008.080831T0237Z-080831T0300Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE KEY WEST FL
1037 PM EDT SAT AUG 30 2008
THE NATIONAL WEATHER SERVICE IN KEY WEST HAS ISSUED A
* TORNADO WARNING FOR...
UPPER KEYS IN MONROE COUNTY IN FLORIDA...
* UNTIL 1100 PM EDT
* AT 1035 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR LOWER
MATECUMBE KEY...OR 25 MILES EAST OF MARATHON...MOVING NORTHWEST AT
36 MPH.
WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY.
TORNADOES ASSOCIATED WITH TROPICAL CYCLONES MOVE RAPIDLY...ARE OFTEN
WRAPPED IN HEAVY RAIN...AND ARE DIFFICULT TO SEE OR HEAR UNTIL THEY
ARE VERY CLOSE.
IF YOU ARE IN THE PATH OF THIS STORM...SEEK SAFE SHELTER
IMMEDIATELY MOVE INDOORS AND TO THE LOWEST LEVEL OF THE BUILDING.
STAY AWAY FROM WINDOWS.
PLEASE REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE KEY WEST
AT 3 0 5...2 9 5...1 3 1 6...EXTENSION 3.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM EDT SUNDAY MORNING FOR
ALL OF THE FLORIDA KEYS.
LAT...LON 2483 8072 2483 8074 2482 8075 2484 8079
2489 8073 2491 8073 2492 8071 2487 8067
TIME...MOT...LOC 0237Z 134DEG 32KT 2484 8072
$$
111 follow-up statement
000
WWUS52 KKEY 310249
SVSKEY
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KEY WEST FL
1049 PM EDT SAT AUG 30 2008
FLC087-310257-
/O.CAN.KKEY.TO.W.0008.000000T0000Z-080831T0300Z/
UPPER KEYS IN MONROE FL-
1047 PM EDT SAT AUG 30 2008
...THE TORNADO WARNING FOR UPPER KEYS IN MONROE COUNTY IS CANCELED...
THE STORM THAT PROMPTED THE TORNADO WARNING FOR THE UPPER
KEYS...NEAR LOWER MATECUMBE...HAS MOVED OFF TO THE NORTHWEST.
THEREFORE...THE TORNADO WARNING HAS BEEN CANCELED.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM EDT SUNDAY MORNING FOR
THE FLORIDA KEYS...AND CONDITIONS REMAIN FAVORABLE FOR TORNADO
DEVELOPMENT ALONG RAINBANDS ASSOCIATED WITH HURRICANE GUSTAV.
LAT...LON 2483 8072 2483 8074 2482 8075 2484 8079
2489 8073 2491 8073 2492 8071 2487 8067
TIME...MOT...LOC 0247Z 134DEG 32KT 2490 8079
$$
11The office that day
Everything else NWS Key West, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 8:42 PM EDT | Severe Thunderstorm Warning | KEY | Monroe | 33 min |
| Aug 30, 9:21 PM EDT | Special Marine Warning | KEY | 114 min | |
| Aug 30, 11:30 PM EDT | Special Marine Warning | KEY | 105 min | |
| Aug 31, 12:45 AM EDT | Special Marine Warning | KEY | 45 min | |
| Aug 31, 1:15 AM EDT | Special Marine Warning | KEY | 30 min | |
| Aug 31, 1:38 AM EDT | Special Marine Warning | KEY | 52 min | |
| Aug 31, 2:30 AM EDT | Special Marine Warning | KEY | 60 min | |
| Aug 31, 3:30 AM EDT | Special Marine Warning | KEY | 60 min | |
| Aug 31, 4:31 AM EDT | Special Marine Warning | KEY | 59 min | |
| Aug 31, 5:30 AM EDT | Special Marine Warning | KEY | 60 min | |
| Aug 31, 6:30 AM EDT | Special Marine Warning | KEY | 60 min | |
| Aug 31, 7:30 AM EDT | Special Marine Warning | KEY | 60 min | |
| Aug 31, 8:01 AM EDT | Special Marine Warning | KEY | 59 min | |
| Aug 31, 8:57 AM EDT | Special Marine Warning | KEY | 63 min | |
| Aug 31, 9:51 AM EDT | Special Marine Warning | KEY | 54 min | |
| Aug 31, 10:45 AM EDT | Special Marine Warning | KEY | 60 min | |
| Aug 31, 5:59 PM EDT | Special Marine Warning | KEY | 61 min | |
| Aug 31, 7:49 PM EDT | Special Marine Warning | KEY | 36 min |
Nearby
Tornado Warnings in Florida, 2008Every tornado warning in 2008Tornadoes in 2008
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.