Alert archive / Florida / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 2, NWS Key West, FL
NWS Key West, FL issued this severe thunderstorm warning at Aug 30, 2008, 8:42 PM EDT for Monroe County, Florida. It was in force for 33 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, 8:42 PM EDT (00:42 UTC)
- Expired
- Aug 30, 2008, 9:15 PM EDT
- In force
- 33 min
- Issued by
- NWS Key West, FL
- Area
- Storm-based polygon
County Monroe County, FL
The radar
The Key West radar (KBYX), 39 km from the middle of the area, began a volume at 00:42 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, 0.7 hours before the alert went out and 42 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
WUUS52 KKEY 310042
SVRKEY
FLC087-310115-
/O.NEW.KKEY.SV.W.0002.080831T0042Z-080831T0115Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KEY WEST FL
842 PM EDT SAT AUG 30 2008
THE NATIONAL WEATHER SERVICE IN KEY WEST HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
LOWER KEYS IN MONROE COUNTY IN FLORIDA...
MIDDLE KEYS IN MONROE COUNTY IN FLORIDA...
THIS INCLUDES THE COMMUNITY OF MARATHON...
* UNTIL 915 PM EDT
* AT 838 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
ALONG A LINE EXTENDING FROM 18 MILES EAST OF MARATHON TO 14 MILES
SOUTHWEST OF MARATHON...AND MOVING NORTHWEST AT 57 MPH.
* SEVERE THUNDERSTORMS WILL BE NEAR...
KNIGHT KEY...PIDGEON KEY...OHIO KEY AND BAHIA HONDA KEY BY 850 PM
EDT...
RAMROD KEY...LITTLE TORCH KEY AND BIG PINE KEY BY 855 PM EDT...
MIDDLE TORCH KEY...SUMMERLAND KEY AND CUDJOE KEY BY 900 PM EDT...
DAMAGING WINDS...DEADLY LIGHTNING...AND VERY HEAVY RAIN ARE LIKELY
WITH THIS STORM. TAKE COVER IN A STURDY BUILDING UNTIL THE STORM
PASSES.
MOBILE HOMES...CAMPERS AND TRAILERS ARE NOT SAFE DURING A SEVERE
THUNDERSTORM. TAKE SHELTER IN A STURDY BUILDING IF POSSIBLE.
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 2470 8167 2467 8159 2475 8159 2471 8153
2478 8150 2476 8133 2480 8128 2469 8129
2468 8122 2485 8082 2482 8077 2467 8108
2469 8118 2462 8133 2463 8145 2459 8146
TIME...MOT...LOC 0041Z 126DEG 50KT 2477 8084 2455 8121
$$
111 follow-up statement
000
WWUS52 KKEY 310110
SVSKEY
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KEY WEST FL
910 PM EDT SAT AUG 30 2008
FLC087-310118-
/O.EXP.KKEY.SV.W.0002.000000T0000Z-080831T0115Z/
LOWER KEYS IN MONROE FL-MIDDLE KEYS IN MONROE FL-
910 PM EDT SAT AUG 30 2008
...THE SEVERE THUNDERSTORM WARNING FOR MIDDLE KEYS IN MONROE AND
LOWER KEYS IN MONROE COUNTIES WILL EXPIRE AT 915 PM EDT...
THE LINE OF SEVERE STORMS THAT PROMPTED THE WARNING FOR THE LOWER
AND MIDDLE KEYS HAS MOVED OFF TO THE NORTHWEST OF THE ISLAND CHAIN.
THE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE AT 915 PM.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM EDT SUNDAY MORNING FOR
ALL OF THE FLORIDA KEYS.
LAT...LON 2470 8167 2467 8159 2475 8159 2471 8153
2478 8150 2476 8133 2480 8128 2469 8129
2468 8122 2485 8082 2482 8077 2467 8108
2469 8118 2462 8133 2463 8145 2459 8146
TIME...MOT...LOC 0108Z 126DEG 50KT 2499 8118 2477 8155
$$
04The office that day
Everything else NWS Key West, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 9:21 PM EDT | Special Marine Warning | KEY | 114 min | |
| Aug 30, 10:37 PM EDT | Tornado Warning | KEY | Monroe | 12 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
Severe Thunderstorm Warnings in Florida, 2008Every severe thunderstorm warning 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.