Alert archive / Florida / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 21, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at May 12, 2009, 6:27 PM EDT for DeSoto County, Highlands 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
- May 12, 2009, 6:27 PM EDT (22:27 UTC)
- Expired
- May 12, 2009, 7:00 PM EDT
- In force
- 33 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Storm-based polygon
Counties DeSoto County, FL, Highlands County, FL
The radar
The Tampa radar (KTBW), 96 km from the middle of the area, began a volume at 22:29 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
Tampa Bay, FL (KTBW), launched 12:00Z, 10.5 hours before the alert went out and 96 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
- 1274 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 756 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -33 m²/s²
- 0-3 km storm-relative helicity
- 17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS52 KTBW 122227 SVRTBW FLC027-055-122300- /O.NEW.KTBW.SV.W.0021.090512T2227Z-090512T2300Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 627 PM EDT TUE MAY 12 2009 THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN DESOTO COUNTY IN FLORIDA. WESTERN HIGHLANDS COUNTY IN FLORIDA. * UNTIL 700 PM EDT * AT 625 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED OVER SOUTHWESTERN HIGHLANDS COUNTY...OR 15 MILES SOUTHWEST OF LAKE PLACID...AND MOVING NORTH AT 10 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... RURAL NORTHEASTERN DESOTO COUNTY. RURAL WESTERN HIGHLANDS COUNTY. LAT...LON 2733 8167 2733 8147 2711 8147 2711 8163 TIME...MOT...LOC 2227Z 181DEG 8KT 2716 8155 $$
1 follow-up statement
000 WWUS52 KTBW 122257 SVSTBW SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL 657 PM EDT TUE MAY 12 2009 FLC027-055-122307- /O.EXP.KTBW.SV.W.0021.000000T0000Z-090512T2300Z/ DESOTO FL-HIGHLANDS FL- 657 PM EDT TUE MAY 12 2009 ...THE SEVERE THUNDERSTORM WARNING FOR WESTERN HIGHLANDS AND NORTHEASTERN DESOTO COUNTIES WILL EXPIRE AT 700 PM EDT... THE STORM WILL CONTINUE TO PRODUCE NON-SEVERE WEATHER OVER... RURAL WESTERN HIGHLANDS COUNTY. ALTHOUGH THE STORM HAS WEAKENED BELOW SEVERE LIMITS IT WILL CONTINUE TO PRODUCE STRONG GUSTY WINDS...HEAVY RAIN...AND SMALL HAIL UNTIL IT FULLY DISSIPATES. LAT...LON 2733 8167 2733 8147 2711 8147 2711 8163 TIME...MOT...LOC 2257Z 181DEG 8KT 2725 8151 $$
The office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 8:58 PM EDT | Special Weather Statement | TBW | Polk | 32 min |
| May 12, 2:39 PM EDT | Special Weather Statement | TBW | Pasco | 36 min |
| May 12, 2:44 PM EDT | Special Weather Statement | TBW | Citrus | 46 min |
| May 12, 2:52 PM EDT | Severe Thunderstorm Warning | TBW | Citrus | 23 min |
| May 12, 3:09 PM EDT | Severe Thunderstorm Warning | TBW | Citrus, Hernando | 36 min |
| May 12, 3:11 PM EDT | Special Marine Warning | TBW | 34 min | |
| May 12, 3:39 PM EDT | Severe Thunderstorm Warning | TBW | Hernando, Pasco | 36 min |
| May 12, 3:52 PM EDT | Severe Thunderstorm Warning | TBW | Citrus, Sumter | 23 min |
| May 12, 4:02 PM EDT | Severe Thunderstorm Warning | TBW | Hernando, Pasco | 28 min |
| May 12, 4:15 PM EDT | Severe Thunderstorm Warning | TBW | Pasco | 30 min |
| May 12, 4:19 PM EDT | Severe Thunderstorm Warning | TBW | Hillsborough | 26 min |
| May 12, 4:29 PM EDT | Severe Thunderstorm Warning | TBW | Hernando, Pasco, Sumter | 16 min |
| May 12, 4:30 PM EDT | Areal Flood Advisory | TBW | Hernando, Pasco | 2 hr |
| May 12, 4:41 PM EDT | Severe Thunderstorm Warning | TBW | Polk, Sumter | 34 min |
| May 12, 4:42 PM EDT | Severe Thunderstorm Warning | TBW | Hillsborough, Polk | 48 min |
| May 12, 4:58 PM EDT | Special Weather Statement | TBW | Lee | 47 min |
| May 12, 5:20 PM EDT | Severe Thunderstorm Warning | TBW | Hardee, Manatee | 25 min |
| May 12, 5:28 PM EDT | Special Marine Warning | TBW | 47 min | |
| May 12, 5:28 PM EDT | Severe Thunderstorm Warning | TBW | Polk | 32 min |
| May 12, 5:30 PM EDT | Severe Thunderstorm Warning | TBW | Hillsborough | 30 min |
| May 12, 5:35 PM EDT | Areal Flood Advisory | TBW | Polk | 55 min |
| May 12, 5:37 PM EDT | Areal Flood Advisory | TBW | Hillsborough | 60 min |
| May 12, 5:51 PM EDT | Special Weather Statement | TBW | DeSoto, Hardee | 39 min |
| May 12, 5:54 PM EDT | Special Marine Warning | TBW | 51 min | |
| May 12, 6:44 PM EDT | Special Marine Warning | TBW | 46 min | |
| May 12, 7:00 PM EDT | Severe Thunderstorm Warning | TBW | Highlands | 30 min |
| May 12, 7:29 PM EDT | Severe Thunderstorm Warning | TBW | Highlands | 31 min |
| May 12, 7:33 PM EDT | Special Marine Warning | TBW | 42 min | |
| May 12, 7:37 PM EDT | Areal Flood Advisory | TBW | Highlands | 113 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2009Every severe thunderstorm warning in 2009
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.