Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 230, NWS Tallahassee, FL

August 29, 2021Gulf County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Aug 29, 2021, 8:46 AM CDT for Gulf County, Florida. It was in force for 29 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 29, 2021, 8:46 AM CDT (13:46 UTC)
Expired
Aug 29, 2021, 9:15 AM CDT
In force
29 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

County Gulf County, FL

The radar

The Eglin Afb radar (KEVX), 108 km from the middle of the area, began a volume at 13:45 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

TimeReportWhereRemark
Aug 29, 8:56 AM CDTMARINE TSTM WIND 483 W Indian Pass, FLTHE MESONET AT SALINAS PARK REPORTED A WIND GUST OF 48 MPH.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 1.8 hours before the alert went out and 121 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 2021-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 912 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 2021-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 135 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
912 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
706 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
135 m²/s²
0-3 km storm-relative helicity
139 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

297 
WUUS52 KTAE 291346
SVRTAE
FLC045-291415-
/O.NEW.KTAE.SV.W.0230.210829T1346Z-210829T1415Z/

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

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  Southwestern Gulf County in the Panhandle of Florida...

* Until 1015 AM EDT/915 AM CDT/.

* At 946 AM EDT/846 AM CDT/, a severe thunderstorm was located 19
  miles south of Port St. Joe, moving north at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Port St. Joe, Mexico Beach, Milltown, Highland View, St Joseph
  State Park, Cape San Blas, Indian Pass, Simmons Bayou, Beacon Hill,
  Jones Homestead, Ward Ridge and Saint Joe Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2960 8524 2960 8540 2975 8549 2988 8549
      2990 8552 2994 8540 2993 8539 2994 8539
      2998 8527 2971 8520 2970 8522 2970 8520
      2968 8519 2968 8522 2966 8519 2957 8516
TIME...MOT...LOC 1346Z 161DEG 40KT 2953 8527 

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

$$

HANER

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 28, 9:43 PM CDTSpecial Marine WarningTAE62 min
Aug 28, 9:47 PM CDTSpecial Marine WarningTAE88 min
Aug 28, 10:00 PM CDTTropical Storm WarningTAE17 hr
Aug 28, 11:00 PM CDTSpecial Weather StatementTAEFranklin, Gulf60 min
Aug 28, 11:10 PM CDTSpecial Marine WarningTAE50 min
Aug 28, 11:14 PM CDTSpecial Marine WarningTAE61 min
Aug 28, 11:18 PM CDTSevere Thunderstorm WarningTAEFranklin, Gulf, Liberty42 min
Aug 28, 11:55 PM CDTSpecial Weather StatementTAELiberty, Wakulla35 min
Aug 29, 12:02 AM CDTSpecial Marine WarningTAE88 min
Aug 29, 1:27 AM CDTSpecial Marine WarningTAE93 min
Aug 29, 2:11 AM CDTSpecial Marine WarningTAE34 min
Aug 29, 2:36 AM CDTCoastal Flood AdvisoryTAEBay, Franklin, Gulf, Jefferson, Wakulla, Walton25 hr
Aug 29, 2:54 AM CDTSpecial Marine WarningTAE51 min
Aug 29, 3:06 AM CDTSpecial Marine WarningTAE24 min
Aug 29, 5:26 AM CDTSpecial Marine WarningTAE52 min
Aug 29, 7:49 AM CDTSpecial Marine WarningTAE26 min
Aug 29, 8:18 AM CDTSpecial Marine WarningTAE42 min
Aug 29, 8:22 AM CDTSpecial Weather StatementTAEBay, Gulf38 min
Aug 29, 8:53 AM CDTSpecial Marine WarningTAE37 min
Aug 29, 8:55 AM CDTSpecial Weather StatementTAEWalton50 min
Aug 29, 9:11 AM CDTSpecial Weather StatementTAEBay, Gulf34 min
Aug 29, 9:29 AM CDTSpecial Marine WarningTAE31 min
Aug 29, 9:46 AM CDTSpecial Weather StatementTAEHolmes29 min
Aug 29, 9:51 AM CDTSpecial Weather StatementTAEBay39 min
Aug 29, 10:22 AM CDTSpecial Weather StatementTAEHolmes, Washington38 min
Aug 29, 10:26 AM CDTSpecial Marine WarningTAE49 min
Aug 29, 10:59 AM CDTSpecial Weather StatementTAECalhoun, Holmes, Jackson31 min
Aug 29, 11:14 AM CDTSpecial Marine WarningTAE46 min
Aug 29, 12:49 PM CDTSpecial Marine WarningTAE86 min
Aug 29, 1:40 PM CDTSevere Thunderstorm WarningTAEBay, Holmes, Walton, Washington50 min
Aug 29, 2:27 PM CDTSpecial Weather StatementTAEHolmes, Jackson, Walton, Washington48 min
Aug 29, 3:51 PM CDTSpecial Weather StatementTAETaylor39 min
Aug 29, 4:06 PM CDTAreal Flood AdvisoryTAEBay, Walton, Washington114 min
Aug 29, 4:10 PM CDTSpecial 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.