Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 48, NWS Tallahassee, FL

April 9, 2021Franklin County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Apr 9, 2021, 5:55 AM EDT for Franklin County, Florida. It was in force for 35 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
Apr 9, 2021, 5:55 AM EDT (09:55 UTC)
Expired
Apr 9, 2021, 6:30 AM EDT
In force
35 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Franklin County, FL

The radar

The Tallahassee radar (KTLH), 75 km from the middle of the area, began a volume at 09:57 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, 9.9 hours before the alert went out and 77 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 2021-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 527 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 2021-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 153 square meters per square second.19395878Sfc1 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
527 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
645 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
153 m²/s²
0-3 km storm-relative helicity
138 m²/s²
Significant tornado parameter
0.5
Supercell composite
5.2

Open this sounding in Storm Lab

The text

As transmitted.

024 
WUUS52 KTAE 090955
SVRTAE
FLC037-091030-
/O.NEW.KTAE.SV.W.0048.210409T0955Z-210409T1030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tallahassee FL
555 AM EDT Fri Apr 9 2021

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  North central Franklin County in Big Bend of Florida...

* Until 630 AM EDT.

* At 555 AM EDT, a severe thunderstorm was located 11 miles north of
  Apalachicola, moving northeast at 30 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Carrabelle, Carrabelle Beach, Morgan Place, High Bluff, Yent Place,
  Creels, Beverly and Hays Place.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2982 8497 3001 8498 3001 8466 2981 8465
TIME...MOT...LOC 0955Z 242DEG 25KT 2991 8494 

HAIL...1.00IN
WIND...60MPH
 
$$

22-BARRY

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 9, 2:48 AM EDTSpecial Marine WarningTAE57 min
Apr 9, 4:16 AM EDTSpecial Weather StatementTAEGulf44 min
Apr 9, 4:31 AM EDTSpecial Marine WarningTAE44 min
Apr 9, 4:44 AM EDTSevere Thunderstorm WarningTAEFranklin, Gulf, Liberty31 min
Apr 9, 5:15 AM EDTSevere Thunderstorm WarningTAEFranklin, Gulf45 min
Apr 9, 6:22 AM EDTSpecial Marine WarningTAE53 min
Apr 9, 6:31 AM EDTSpecial Weather StatementTAEFranklin44 min
Apr 9, 6:49 AM EDTSevere Thunderstorm WarningTAEBay, Calhoun, Jackson, Washington56 min
Apr 9, 7:07 AM EDTSpecial Marine WarningTAE113 min
Apr 9, 7:37 AM EDTSpecial Weather StatementTAELiberty38 min
Apr 9, 7:43 AM EDTSevere Thunderstorm WarningTAEBay, Calhoun, Jackson62 min
Apr 9, 7:48 AM EDTAreal Flood AdvisoryTAEBay, Gulf3 hr
Apr 9, 7:59 AM EDTSpecial Weather StatementTAEWalton46 min
Apr 9, 8:16 AM EDTSpecial Weather StatementTAEHolmes44 min
Apr 9, 8:18 AM EDTSpecial Weather StatementTAEGulf27 min
Apr 9, 8:34 AM EDTSevere Thunderstorm WarningTAEHolmes, Jackson, Washington43 min
Apr 9, 8:35 AM EDTSevere Thunderstorm WarningTAEJackson55 min
Apr 9, 8:54 AM EDTSpecial Marine WarningTAE2 hr
Apr 9, 9:31 AM EDTSpecial Marine WarningTAE3 hr
Apr 9, 10:22 AM EDTFlash Flood WarningTAEBay, Walton3 hr
Apr 9, 10:53 AM EDTSpecial Marine WarningTAE3 hr
Apr 9, 11:27 AM EDTSevere Thunderstorm WarningTAEBay48 min
Apr 9, 12:04 PM EDTSevere Thunderstorm WarningTAEBay, Gulf41 min
Apr 9, 12:11 PM EDTFlash Flood WarningTAEBay, Gulf2 hr
Apr 9, 12:27 PM EDTSpecial Marine WarningTAE3 hr
Apr 9, 12:43 PM EDTSpecial Weather StatementTAEGulf47 min
Apr 9, 12:56 PM EDTSpecial Weather StatementTAEBay, Calhoun, Jackson, Liberty, Washington64 min
Apr 9, 1:39 PM EDTSpecial Weather StatementTAELiberty51 min
Apr 9, 3:07 PM EDTSmall Craft AdvisoryTAE29 hr
Apr 9, 3:28 PM EDTSpecial Marine WarningTAE2 hr
Apr 9, 5:42 PM EDTSpecial Weather StatementTAEBay, Calhoun, Gadsden, Gulf, Jefferson, Leon and 2 more48 min
Apr 9, 6:25 PM EDTSpecial Marine WarningTAE95 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.