Alert archive / Florida / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 28, NWS Tampa Bay, FL
NWS Tampa Bay, FL issued this severe thunderstorm warning at Aug 25, 2021, 6:23 PM EDT for Pinellas County, Florida. It was in force for 21 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
- Aug 25, 2021, 6:23 PM EDT (22:23 UTC)
- Expired
- Aug 25, 2021, 6:44 PM EDT
- In force
- 21 min
- Issued by
- NWS Tampa Bay, FL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Pinellas County, FL
The radar
The Tampa radar (KTBW), 39 km from the middle of the area, began a volume at 22:27 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 |
|---|---|---|---|
| Aug 25, 6:27 PM EDT | TSTM WND DMG | 1 Wsw Seminole, FL | EMERGENCY MANAGER REPORTED POWERLINES DOWN IN THE AREA OF 74TH AVE AND 113TH ST NORTH. NUMEROUS OTHER ELECTRICAL HAZARDS DUE TO POWERLINES ACROSS PINELLAS. 5300 CUSTOMERS WITHOUT POWER AT ONE POINT IN SEMINOLE AREA. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 12:00Z, 10.4 hours before the alert went out and 39 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
- 1876 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 812 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- -12 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
664
WUUS52 KTBW 252223
SVRTBW
FLC103-252300-
/O.NEW.KTBW.SV.W.0028.210825T2223Z-210825T2300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tampa Bay Area Ruskin FL
623 PM EDT Wed Aug 25 2021
The National Weather Service in Ruskin has issued a
* Severe Thunderstorm Warning for...
West central Pinellas County in west central Florida...
* Until 700 PM EDT.
* At 623 PM EDT, a severe thunderstorm was located over West And East
Lealman, or over Pinellas Park, moving west at 15 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
St. Petersburg, Pinellas Park, Seminole, Treasure Island, Kenneth
City, Madeira Beach, Redington Shores, Redington Beach, Indian
Shores and North Redington Beach.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 2788 8269 2778 8268 2774 8286 2777 8287
2787 8289
TIME...MOT...LOC 2223Z 076DEG 12KT 2782 8272
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
TBW2 follow-up statements
371
WWUS52 KTBW 252230
SVSTBW
Severe Weather Statement
National Weather Service Tampa Bay Area Ruskin FL
630 PM EDT Wed Aug 25 2021
FLC103-252300-
/O.CON.KTBW.SV.W.0028.000000T0000Z-210825T2300Z/
Pinellas FL-
630 PM EDT Wed Aug 25 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR WEST CENTRAL PINELLAS COUNTY...
At 629 PM EDT, a severe thunderstorm was located over Bay Pines, or
over Seminole, moving west at 15 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
St. Petersburg, Pinellas Park, Seminole, Treasure Island, Kenneth
City, Madeira Beach, Redington Shores, Redington Beach, Indian Shores
and North Redington Beach.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 2787 8278 2788 8277 2787 8273 2778 8272
2774 8286 2777 8287 2787 8289
TIME...MOT...LOC 2229Z 082DEG 14KT 2783 8277
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
TBW139
WWUS52 KTBW 252244
SVSTBW
Severe Weather Statement
National Weather Service Tampa Bay Area Ruskin FL
644 PM EDT Wed Aug 25 2021
FLC103-252253-
/O.CAN.KTBW.SV.W.0028.000000T0000Z-210825T2300Z/
Pinellas FL-
644 PM EDT Wed Aug 25 2021
...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL PINELLAS COUNTY
IS CANCELLED...
The core of strong winds which prompted the warning has moved out
over the waters. Therefore, the warning has been cancelled.
LAT...LON 2787 8278 2788 8277 2787 8273 2778 8272
2774 8286 2777 8287 2787 8289
TIME...MOT...LOC 2241Z 076DEG 12KT 2782 8282
$$
TBWThe office that day
Everything else NWS Tampa Bay, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 25, 3:55 PM EDT | Special Weather Statement | TBW | Charlotte, Lee | 35 min |
| Aug 25, 4:24 PM EDT | Special Marine Warning | TBW | 36 min | |
| Aug 25, 4:58 PM EDT | Special Marine Warning | TBW | 32 min | |
| Aug 25, 5:07 PM EDT | Special Marine Warning | TBW | 38 min | |
| Aug 25, 6:06 PM EDT | Special Weather Statement | TBW | Pinellas | 24 min |
| Aug 25, 6:20 PM EDT | Special Marine Warning | TBW | 40 min | |
| Aug 25, 6:55 PM EDT | Special Marine Warning | TBW | 65 min |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.