Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 229, NWS Tallahassee, FL

August 29, 2021Franklin County, Gulf County, Liberty County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Aug 29, 2021, 12:18 AM EDT for Franklin County, Gulf County, Liberty County, Florida. It was in force for 42 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 29, 2021, 12:18 AM EDT (04:18 UTC)
Expired
Aug 29, 2021, 1:00 AM EDT
In force
42 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Franklin County, FL, Gulf County, FL, Liberty County, FL

The radar

The Tallahassee radar (KTLH), 68 km from the middle of the area, began a volume at 04:18 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

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 4.3 hours before the alert went out and 70 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 00:00Z on 2021-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 251 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 00:00Z on 2021-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 136 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
251 J/kg
Mixed-layer CIN
-129 J/kg
Mixed-layer LCL
1123 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
136 m²/s²
0-3 km storm-relative helicity
148 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted.

960 
WUUS52 KTAE 290418
SVRTAE
FLC037-045-077-290500-
/O.NEW.KTAE.SV.W.0229.210829T0418Z-210829T0500Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tallahassee FL
1218 AM EDT Sun Aug 29 2021

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  Northeastern Gulf County in the Panhandle of Florida...
  Southern Liberty County in Big Bend of Florida...
  Franklin County in Big Bend of Florida...

* Until 100 AM EDT/midnight CDT/.

* At 1218 AM EDT/1118 PM CDT/, a severe thunderstorm was located near
  Eastpoint, moving northwest at 40 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Carrabelle, Eastpoint, Apalachicola, Wewahitchka, Orange, Franklin,
  Carrabelle Beach, Honeyville, Royal Bluff, Vilas, Chipola Cutoff,
  Jensen Place, Central City, Beverly, Kern, Willis Landing, Nixon
  Garden, Twin Pole, Hays Place and Dalkeith.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2989 8443 2965 8491 3000 8532 3031 8494
TIME...MOT...LOC 0418Z 135DEG 36KT 2983 8480 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

72-BUNKER
1 follow-up statement
176 
WWUS52 KTAE 290455
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
1255 AM EDT Sun Aug 29 2021

FLC037-045-077-290504-
/O.EXP.KTAE.SV.W.0229.000000T0000Z-210829T0500Z/
Gulf FL-Liberty FL-Franklin FL-
1255 AM EDT Sun Aug 29 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN GULF...SOUTHERN
LIBERTY AND FRANKLIN COUNTIES WILL EXPIRE AT 100 AM EDT/MIDNIGHT
CDT/...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with this thunderstorm.

LAT...LON 2989 8443 2965 8491 3000 8532 3031 8494
TIME...MOT...LOC 0454Z 135DEG 36KT 3008 8509 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 28, 10:43 PM EDTSpecial Marine WarningTAE62 min
Aug 28, 10:47 PM EDTSpecial Marine WarningTAE88 min
Aug 28, 11:00 PM EDTTropical Storm WarningTAE17 hr
Aug 29, 12:00 AM EDTSpecial Weather StatementTAEFranklin, Gulf60 min
Aug 29, 12:10 AM EDTSpecial Marine WarningTAE50 min
Aug 29, 12:14 AM EDTSpecial Marine WarningTAE61 min
Aug 29, 12:55 AM EDTSpecial Weather StatementTAELiberty, Wakulla35 min
Aug 29, 1:02 AM EDTSpecial Marine WarningTAE88 min
Aug 29, 2:27 AM EDTSpecial Marine WarningTAE93 min
Aug 29, 3:11 AM EDTSpecial Marine WarningTAE34 min
Aug 29, 3:36 AM EDTCoastal Flood AdvisoryTAEBay, Franklin, Gulf, Jefferson, Wakulla, Walton25 hr
Aug 29, 3:54 AM EDTSpecial Marine WarningTAE51 min
Aug 29, 4:06 AM EDTSpecial Marine WarningTAE24 min
Aug 29, 6:26 AM EDTSpecial Marine WarningTAE52 min
Aug 29, 8:49 AM EDTSpecial Marine WarningTAE26 min
Aug 29, 9:18 AM EDTSpecial Marine WarningTAE42 min
Aug 29, 9:22 AM EDTSpecial Weather StatementTAEBay, Gulf38 min
Aug 29, 9:46 AM EDTSevere Thunderstorm WarningTAEGulf29 min
Aug 29, 9:53 AM EDTSpecial Marine WarningTAE37 min
Aug 29, 9:55 AM EDTSpecial Weather StatementTAEWalton50 min
Aug 29, 10:11 AM EDTSpecial Weather StatementTAEBay, Gulf34 min
Aug 29, 10:29 AM EDTSpecial Marine WarningTAE31 min
Aug 29, 10:46 AM EDTSpecial Weather StatementTAEHolmes29 min
Aug 29, 10:51 AM EDTSpecial Weather StatementTAEBay39 min
Aug 29, 11:22 AM EDTSpecial Weather StatementTAEHolmes, Washington38 min
Aug 29, 11:26 AM EDTSpecial Marine WarningTAE49 min
Aug 29, 11:59 AM EDTSpecial Weather StatementTAECalhoun, Holmes, Jackson31 min
Aug 29, 12:14 PM EDTSpecial Marine WarningTAE46 min
Aug 29, 1:49 PM EDTSpecial Marine WarningTAE86 min
Aug 29, 2:40 PM EDTSevere Thunderstorm WarningTAEBay, Holmes, Walton, Washington50 min
Aug 29, 3:27 PM EDTSpecial Weather StatementTAEHolmes, Jackson, Walton, Washington48 min
Aug 29, 4:51 PM EDTSpecial Weather StatementTAETaylor39 min
Aug 29, 5:06 PM EDTAreal Flood AdvisoryTAEBay, Walton, Washington114 min
Aug 29, 5:10 PM EDTSpecial Weather StatementTAEWashington35 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; radar from the NEXRAD Level II archive.