Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 145, NWS Tallahassee, FL

June 13, 2021Bay County, Walton County, Washington County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Jun 13, 2021, 6:45 PM CDT for Bay County, Walton County, Washington County, Florida. It was in force for 30 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 13, 2021, 6:45 PM CDT (23:45 UTC)
Expired
Jun 13, 2021, 7:15 PM CDT
In force
30 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

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

The radar

The Eglin Afb radar (KEVX), 32 km from the middle of the area, began a volume at 23:45 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.

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 11.8 hours before the alert went out and 135 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 2021-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 44 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 2021-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 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
44 J/kg
Mixed-layer CIN
-277 J/kg
Mixed-layer LCL
1448 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
11 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

663 
WUUS52 KTAE 132345
SVRTAE
FLC005-131-133-140030-
/O.NEW.KTAE.SV.W.0145.210613T2345Z-210614T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tallahassee FL
645 PM CDT Sun Jun 13 2021

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  Bay County in the Panhandle of Florida...
  Southeastern Walton County in the Panhandle of Florida...
  Southern Washington County in the Panhandle of Florida...

* Until 730 PM CDT.

* At 645 PM CDT, severe thunderstorms were located along a line
  extending from 10 miles southwest of Vernon to 15 miles northeast
  of Lynn Haven, moving south at 25 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Panama City, Lynn Haven, Panama City Beach, Callaway, Springfield,
  Hiland Park, Tyndall Air Force Base, Live Oak, Parker, Ebro,
  Allanton, Dirego Park, College Station, Gulf Resort Beach, West
  Panama City, Seaside, Bahama Beach, Millers Ferry, Bennett and
  Davis Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3063 8591 3043 8539 3015 8539 2992 8546
      3031 8617
TIME...MOT...LOC 2345Z 021DEG 22KT 3049 8581 3037 8544 

HAIL...0.75IN
WIND...60MPH
 
$$
1 follow-up statement
414 
WWUS52 KTAE 140015
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
715 PM CDT Sun Jun 13 2021

FLC005-131-133-140025-
/O.CAN.KTAE.SV.W.0145.000000T0000Z-210614T0030Z/
Bay FL-Walton FL-Washington FL-
715 PM CDT Sun Jun 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR BAY...SOUTHEASTERN WALTON AND
SOUTHERN WASHINGTON COUNTIES IS CANCELLED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with these thunderstorms.

LAT...LON 3063 8591 3043 8539 3015 8539 2992 8546
      3031 8617
TIME...MOT...LOC 0012Z 021DEG 22KT 3033 8588 3021 8551 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 7:45 PM CDTSpecial Marine WarningTAE60 min
Jun 12, 10:02 PM CDTSpecial Marine WarningTAE88 min
Jun 13, 5:40 AM CDTSpecial Weather StatementTAELeon35 min
Jun 13, 10:28 AM CDTRip Current StatementTAEBay, Gulf15 hr
Jun 13, 11:55 AM CDTSpecial Weather StatementTAEDixie35 min
Jun 13, 12:15 PM CDTSpecial Weather StatementTAELafayette45 min
Jun 13, 1:39 PM CDTSpecial Weather StatementTAEWakulla36 min
Jun 13, 2:44 PM CDTSpecial Marine WarningTAE61 min
Jun 13, 2:51 PM CDTSpecial Marine WarningTAE54 min
Jun 13, 2:53 PM CDTSpecial Weather StatementTAETaylor52 min
Jun 13, 3:07 PM CDTSpecial Weather StatementTAEGulf68 min
Jun 13, 3:16 PM CDTSpecial Marine WarningTAE93 min
Jun 13, 3:41 PM CDTSpecial Marine WarningTAE100 min
Jun 13, 4:11 PM CDTSpecial Marine WarningTAE64 min
Jun 13, 5:04 PM CDTSpecial Weather StatementTAELeon41 min
Jun 13, 5:49 PM CDTSpecial Weather StatementTAEHolmes, Washington41 min
Jun 13, 6:06 PM CDTSpecial Weather StatementTAEWashington24 min
Jun 13, 6:16 PM CDTSevere Thunderstorm WarningTAEBay, Holmes, Jackson, Walton, Washington44 min
Jun 13, 6:31 PM CDTSpecial Marine WarningTAE59 min
Jun 13, 6:49 PM CDTSpecial Marine WarningTAE86 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.