Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 170, NWS Tallahassee, FL

June 24, 20214 counties in Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Jun 24, 2021, 6:19 PM CDT for 4 counties in Florida. It was in force for 26 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 24, 2021, 6:19 PM CDT (23:19 UTC)
Expired
Jun 24, 2021, 6:45 PM CDT
In force
26 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Bay County, FL, Holmes County, FL, Walton County, FL, Washington County, FL

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 11.3 hours before the alert went out and 148 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, Tallahassee Rgnl, FL at 12:00Z on 2021-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1071 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, Tallahassee Rgnl, FL at 12:00Z on 2021-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 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
1071 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
708 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
-8 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

402 
WUUS52 KTAE 242319
SVRTAE
FLC005-059-131-133-242345-
/O.NEW.KTAE.SV.W.0170.210624T2319Z-210624T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tallahassee FL
619 PM CDT Thu Jun 24 2021

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  Northwestern Bay County in the Panhandle of Florida...
  East central Walton County in the Panhandle of Florida...
  South central Holmes County in the Panhandle of Florida...
  Western Washington County in the Panhandle of Florida...

* Until 645 PM CDT.

* At 619 PM CDT, a severe thunderstorm was located near Vernon,
  moving southwest at 25 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Vernon, Live Oak, Caryville, Westville, Ebro, Hinsons Crossroads,
  Red Bay, Whitehead Crossroads, Bruce, Red Head, Holmes Valley,
  Millers Ferry and Five Points.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3079 8581 3074 8567 3038 8576 3049 8604
TIME...MOT...LOC 2319Z 022DEG 21KT 3068 8577 

HAIL...<.75IN
WIND...60MPH
 
$$
2 follow-up statements
405 
WWUS52 KTAE 242336
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
636 PM CDT Thu Jun 24 2021

FLC005-059-242346-
/O.CAN.KTAE.SV.W.0170.000000T0000Z-210624T2345Z/
Bay FL-Holmes FL-
636 PM CDT Thu Jun 24 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN BAY AND SOUTH
CENTRAL HOLMES COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area.

LAT...LON 3070 8588 3070 8585 3073 8583 3069 8573
      3044 8581 3044 8586 3042 8587 3049 8604
TIME...MOT...LOC 2336Z 022DEG 21KT 3058 8581 

$$

FLC131-133-242345-
/O.CON.KTAE.SV.W.0170.000000T0000Z-210624T2345Z/
Walton FL-Washington FL-
636 PM CDT Thu Jun 24 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR EAST CENTRAL WALTON AND SOUTHWESTERN WASHINGTON COUNTIES...

At 636 PM CDT, a severe thunderstorm was located near Vernon, moving
south at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Live Oak, Ebro, Bruce, Red Head, Millers Ferry, Hinsons Crossroads,
Red Bay and Whitehead Crossroads.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3070 8588 3070 8585 3073 8583 3069 8573
      3044 8581 3044 8586 3042 8587 3049 8604
TIME...MOT...LOC 2336Z 022DEG 21KT 3058 8581 

HAIL...<.75IN
WIND...60MPH
 
$$
740 
WWUS52 KTAE 242343
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
643 PM CDT Thu Jun 24 2021

FLC131-133-242351-
/O.EXP.KTAE.SV.W.0170.000000T0000Z-210624T2345Z/
Walton FL-Washington FL-
643 PM CDT Thu Jun 24 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL WALTON AND
SOUTHWESTERN WASHINGTON COUNTIES WILL EXPIRE AT 645 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.

Gusty winds of 40 mph are still possible with this thunderstorm.

LAT...LON 3070 8588 3070 8585 3073 8583 3069 8573
      3044 8581 3044 8586 3042 8587 3049 8604
TIME...MOT...LOC 2341Z 022DEG 21KT 3055 8582 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 23, 9:19 PM CDTAreal Flood AdvisoryTAECalhoun, Liberty116 min
Jun 24, 10:56 AM CDTSpecial Weather StatementTAEMadison49 min
Jun 24, 12:22 PM CDTRip Current StatementTAEBay, Walton13 hr
Jun 24, 1:28 PM CDTSpecial Weather StatementTAEGulf47 min
Jun 24, 2:15 PM CDTSpecial Weather StatementTAEWalton45 min
Jun 24, 3:36 PM CDTSpecial Marine WarningTAE54 min
Jun 24, 3:47 PM CDTSpecial Weather StatementTAEDixie43 min
Jun 24, 3:52 PM CDTSpecial Marine WarningTAE53 min
Jun 24, 4:44 PM CDTSpecial Weather StatementTAEWalton61 min
Jun 24, 4:46 PM CDTSpecial Marine WarningTAE59 min
Jun 24, 5:15 PM CDTSpecial Weather StatementTAEHolmes45 min
Jun 24, 5:27 PM CDTSpecial Weather StatementTAECalhoun63 min
Jun 24, 6:01 PM CDTSpecial Weather StatementTAEWashington59 min
Jun 24, 6:27 PM CDTSpecial Weather StatementTAEHolmes18 min
Jun 24, 6:49 PM CDTSpecial Weather StatementTAEWalton56 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; the sounding from the Mesonet's radiosonde archive.