Alert archive / Florida / Tornado Warnings in 2021

Tornado Warning 4, NWS Tampa Bay, FL

June 29, 2021Pinellas County, Florida

NWS Tampa Bay, FL issued this tornado warning at Jun 29, 2021, 4:03 PM EDT for Pinellas 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
Jun 29, 2021, 4:03 PM EDT (20:03 UTC)
Expired
Jun 29, 2021, 4:15 PM EDT
In force
12 min
Issued by
NWS Tampa Bay, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

County Pinellas County, FL

The radar

The Tampa radar (KTBW), 28 km from the middle of the area, began a volume at 20:04 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, 8.1 hours before the alert went out and 28 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.

Skew-T log-pSkew-T log-p diagram, Tampa Bay, FL at 12:00Z on 2021-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1021 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tampa Bay, FL at 12:00Z on 2021-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -50 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1021 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
889 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-50 m²/s²
0-3 km storm-relative helicity
-20 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

820 
WFUS52 KTBW 292003
TORTBW
FLC103-292015-
/O.NEW.KTBW.TO.W.0004.210629T2003Z-210629T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tampa Bay Area Ruskin FL
403 PM EDT Tue Jun 29 2021

The National Weather Service in Ruskin has issued a

* Tornado Warning for...
  East central Pinellas County in west central Florida...

* Until 415 PM EDT.
    
* At 402 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Gandy, or near Downtown Saint Petersburg, moving
  northwest at 15 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Pinellas Park and Feather Sound around 415 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Venetian Isles and Weedon Island State Preserve.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to an interior room on the lowest floor of a
sturdy building. Avoid windows. If you are outdoors, in a mobile
home, or in a vehicle, move to the closest substantial shelter and
protect yourself from flying debris.

&&

LAT...LON 2788 8258 2781 8259 2785 8269 2791 8266
      2791 8261
TIME...MOT...LOC 2002Z 122DEG 11KT 2785 8259 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

TBW
1 follow-up statement
301 
WWUS52 KTBW 292006
SVSTBW

Severe Weather Statement
National Weather Service Tampa Bay Area Ruskin FL
406 PM EDT Tue Jun 29 2021

FLC103-292016-
/O.EXP.KTBW.TO.W.0004.000000T0000Z-210629T2015Z/
Pinellas FL-
406 PM EDT Tue Jun 29 2021

...THE TORNADO WARNING FOR EAST CENTRAL PINELLAS COUNTY WILL EXPIRE
AT 415 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.

LAT...LON 2788 8258 2781 8259 2785 8269 2791 8266
      2791 8261
TIME...MOT...LOC 2006Z 122DEG 11KT 2785 8259 

$$

TBW

The office that day

Everything else NWS Tampa Bay, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 29, 2:42 PM EDTSpecial Marine WarningTBW48 min
Jun 29, 3:36 PM EDTSpecial Weather StatementTBWManatee, Sarasota39 min
Jun 29, 3:53 PM EDTSpecial Marine WarningTBW37 min
Jun 29, 4:23 PM EDTSpecial Weather StatementTBWPasco37 min
Jun 29, 4:34 PM EDTAreal Flood AdvisoryTBWManatee116 min
Jun 29, 4:39 PM EDTSpecial Marine WarningTBW36 min
Jun 29, 4:49 PM EDTSpecial Marine WarningTBW41 min
Jun 29, 4:54 PM EDTAreal Flood AdvisoryTBWHillsborough, Pasco, Pinellas2 hr
Jun 29, 4:55 PM EDTSpecial Weather StatementTBWHillsborough35 min
Jun 29, 5:34 PM EDTSpecial Weather StatementTBWHillsborough, Pasco41 min
Jun 29, 6:12 PM EDTSpecial Weather StatementTBWPasco48 min
Jun 29, 6:54 PM EDTSpecial Marine WarningTBW51 min
Jun 29, 6:59 PM EDTSpecial Weather StatementTBWHernando, Pasco31 min

Nearby

Tornado Warnings in Florida, 2021Every tornado warning in 2021Tornadoes 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; radar from the NEXRAD Level II archive.