Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 50, NWS Tallahassee, FL

April 9, 2021Bay County, Calhoun County, Jackson County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Apr 9, 2021, 6:43 AM CDT for Bay County, Calhoun County, Jackson County, Florida. It was in force for 62 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
Apr 9, 2021, 6:43 AM CDT (11:43 UTC)
Expired
Apr 9, 2021, 7:45 AM CDT
In force
62 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Bay County, FL, Calhoun County, FL, Jackson County, FL

The radar

The Eglin Afb radar (KEVX), 56 km from the middle of the area, began a volume at 11:43 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
Apr 9, 6:45 AM CDTHAIL 1.5Fountain, FLQUARTER TO JUST UNDER GOLF BALL SIZE HAIL REPORTED IN THE FOUNTAIN AREA.

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 00:00Z, 11.7 hours before the alert went out and 101 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.

724 
WUUS52 KTAE 091143
SVRTAE
FLC005-013-063-091245-
/O.NEW.KTAE.SV.W.0050.210409T1143Z-210409T1245Z/

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

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  South central Jackson County in the Panhandle of Florida...
  Northeastern Bay County in the Panhandle of Florida...
  Northern Calhoun County in the Panhandle of Florida...

* Until 745 AM CDT.

* At 643 AM CDT, a severe thunderstorm was located 19 miles northeast
  of Lynn Haven, moving northeast at 20 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* Locations impacted include...
  Altha, Betts, Moose Pond, Ocheesee, Fountain, Singer Road, Chason,
  Saunders, Union City, Chipola, Henderson Mill, Camps Head, Sink
  Creek, Center Lake, Willis, Simsville, Alliance, Macedonia and
  White Pond.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Tallahassee.

&&

LAT...LON 3049 8549 3075 8520 3056 8497 3037 8541
      3044 8549
TIME...MOT...LOC 1143Z 233DEG 19KT 3045 8543 

HAIL...1.00IN
WIND...<50MPH
 
$$

42-DVD
2 follow-up statements
952 
WWUS52 KTAE 091210
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
710 AM CDT Fri Apr 9 2021

FLC005-091220-
/O.CAN.KTAE.SV.W.0050.000000T0000Z-210409T1245Z/
Bay FL-
710 AM CDT Fri Apr 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BAY COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3059 8537 3075 8520 3056 8497 3045 8523
      3049 8531
TIME...MOT...LOC 1210Z 234DEG 20KT 3055 8525 

$$

FLC013-063-091245-
/O.CON.KTAE.SV.W.0050.000000T0000Z-210409T1245Z/
Jackson FL-Calhoun FL-
710 AM CDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 AM CDT
FOR SOUTH CENTRAL JACKSON AND NORTHERN CALHOUN COUNTIES IN THE
PANHANDLE OF FLORIDA...

At 710 AM CDT, a severe thunderstorm was located 14 miles northwest
of Blountstown, moving northeast at 25 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Altha, Moose Pond, Ocheesee, Chason, Union City, Chipola, Henderson
Mill, Camps Head, Sink Creek, Center Lake, Willis, Simsville,
Alliance, Macedonia and White Pond.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Tallahassee.

&&

LAT...LON 3059 8537 3075 8520 3056 8497 3045 8523
      3049 8531
TIME...MOT...LOC 1210Z 234DEG 20KT 3055 8525 

HAIL...1.00IN
WIND...<50MPH
 
$$

42-DVD
530 
WWUS52 KTAE 091237
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
737 AM CDT Fri Apr 9 2021

FLC013-063-091247-
/O.EXP.KTAE.SV.W.0050.000000T0000Z-210409T1245Z/
Jackson FL-Calhoun FL-
737 AM CDT Fri Apr 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL JACKSON AND
NORTHERN CALHOUN COUNTIES IN THE PANHANDLE OF FLORIDA WILL EXPIRE AT
745 AM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Tallahassee.

LAT...LON 3059 8537 3075 8520 3056 8497 3045 8523
      3049 8531
TIME...MOT...LOC 1237Z 233DEG 19KT 3063 8513 

$$

42-DVD

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 9, 1:48 AM CDTSpecial Marine WarningTAE57 min
Apr 9, 3:16 AM CDTSpecial Weather StatementTAEGulf44 min
Apr 9, 3:31 AM CDTSpecial Marine WarningTAE44 min
Apr 9, 3:44 AM CDTSevere Thunderstorm WarningTAEFranklin, Gulf, Liberty31 min
Apr 9, 4:15 AM CDTSevere Thunderstorm WarningTAEFranklin, Gulf45 min
Apr 9, 4:55 AM CDTSevere Thunderstorm WarningTAEFranklin35 min
Apr 9, 5:22 AM CDTSpecial Marine WarningTAE53 min
Apr 9, 5:31 AM CDTSpecial Weather StatementTAEFranklin44 min
Apr 9, 5:49 AM CDTSevere Thunderstorm WarningTAEBay, Calhoun, Jackson, Washington56 min
Apr 9, 6:07 AM CDTSpecial Marine WarningTAE113 min
Apr 9, 6:37 AM CDTSpecial Weather StatementTAELiberty38 min
Apr 9, 6:48 AM CDTAreal Flood AdvisoryTAEBay, Gulf3 hr
Apr 9, 6:59 AM CDTSpecial Weather StatementTAEWalton46 min
Apr 9, 7:16 AM CDTSpecial Weather StatementTAEHolmes44 min
Apr 9, 7:18 AM CDTSpecial Weather StatementTAEGulf27 min
Apr 9, 7:34 AM CDTSevere Thunderstorm WarningTAEHolmes, Jackson, Washington43 min
Apr 9, 7:35 AM CDTSevere Thunderstorm WarningTAEJackson55 min
Apr 9, 7:54 AM CDTSpecial Marine WarningTAE2 hr
Apr 9, 8:31 AM CDTSpecial Marine WarningTAE3 hr
Apr 9, 9:22 AM CDTFlash Flood WarningTAEBay, Walton3 hr
Apr 9, 9:53 AM CDTSpecial Marine WarningTAE3 hr
Apr 9, 10:27 AM CDTSevere Thunderstorm WarningTAEBay48 min
Apr 9, 11:04 AM CDTSevere Thunderstorm WarningTAEBay, Gulf41 min
Apr 9, 11:11 AM CDTFlash Flood WarningTAEBay, Gulf2 hr
Apr 9, 11:27 AM CDTSpecial Marine WarningTAE3 hr
Apr 9, 11:43 AM CDTSpecial Weather StatementTAEGulf47 min
Apr 9, 11:56 AM CDTSpecial Weather StatementTAEBay, Calhoun, Jackson, Liberty, Washington64 min
Apr 9, 12:39 PM CDTSpecial Weather StatementTAELiberty51 min
Apr 9, 2:07 PM CDTSmall Craft AdvisoryTAE29 hr
Apr 9, 2:28 PM CDTSpecial Marine WarningTAE2 hr
Apr 9, 4:42 PM CDTSpecial Weather StatementTAEBay, Calhoun, Gadsden, Gulf, Jefferson, Leon and 2 more48 min
Apr 9, 5:25 PM CDTSpecial 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.