Alert archive / Florida / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 27, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Aug 15, 2021, 3:42 PM EDT for Pinellas 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 15, 2021, 3:42 PM EDT (19:42 UTC)
- Expired
- Aug 15, 2021, 4:15 PM EDT
- In force
- 33 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Pinellas County, FL
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 7.7 hours before the alert went out and 30 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
- 816 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 733 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 130 m²/s²
- 0-3 km storm-relative helicity
- 117 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
349 WUUS52 KTBW 151942 SVRTBW FLC103-152015- /O.NEW.KTBW.SV.W.0027.210815T1942Z-210815T2015Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Tampa Bay Area Ruskin FL 342 PM EDT Sun Aug 15 2021 The National Weather Service in Ruskin has issued a * Severe Thunderstorm Warning for... Central Pinellas County in west central Florida... * Until 415 PM EDT. * At 341 PM EDT, a severe thunderstorm was located over St. Petersburg, or over Downtown Saint Petersburg, moving northwest at 25 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... St. Petersburg, Clearwater, Largo, Pinellas Park, Seminole, Gulfport, Treasure Island, Kenneth City, South Pasadena and Madeira Beach. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 2780 8257 2772 8264 2781 8287 2797 8275 TIME...MOT...LOC 1941Z 126DEG 21KT 2778 8266 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ TBW
1 follow-up statement
966
WWUS52 KTBW 152009
SVSTBW
Severe Weather Statement
National Weather Service Tampa Bay Area Ruskin FL
409 PM EDT Sun Aug 15 2021
FLC103-152016-
/O.EXP.KTBW.SV.W.0027.000000T0000Z-210815T2015Z/
Pinellas FL-
409 PM EDT Sun Aug 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL PINELLAS COUNTY WILL
EXPIRE AT 415 PM EDT...
The storm which prompted the warning is moving out of the area.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible with this thunderstorm.
LAT...LON 2780 8257 2772 8264 2781 8287 2797 8275
TIME...MOT...LOC 2006Z 126DEG 21KT 2787 8279
$$
TBWThe office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 9:33 PM EDT | Special Marine Warning | TBW | 57 min | |
| Aug 15, 9:06 AM EDT | River Flood Warning | TBW | Citrus | 5 days |
| Aug 15, 1:15 PM EDT | Coastal Flood Advisory | TBW | Citrus, Hernando, Levy | 44 hr |
| Aug 15, 2:47 PM EDT | Special Marine Warning | TBW | 58 min | |
| Aug 15, 2:48 PM EDT | Special Weather Statement | TBW | Manatee | 27 min |
| Aug 15, 3:33 PM EDT | Special Marine Warning | TBW | 57 min | |
| Aug 15, 3:34 PM EDT | Special Weather Statement | TBW | Pinellas | 41 min |
| Aug 15, 4:12 PM EDT | Special Weather Statement | TBW | Pinellas | 33 min |
| Aug 15, 4:28 PM EDT | Special Marine Warning | TBW | 62 min | |
| Aug 15, 5:44 PM EDT | Storm Surge Warning | TBW | Levy | 29 hr |
| Aug 15, 5:47 PM EDT | Special Marine Warning | TBW | 118 min | |
| Aug 15, 7:41 PM EDT | Special Marine Warning | TBW | 2 hr |
Nearby
Severe Thunderstorm Warnings in Florida, 2021Every severe thunderstorm warning in 2021
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.