Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Tallahassee, FL

July 31, 2021Washington County, Florida

NWS Tallahassee, FL issued this special weather statement at Jul 31, 2021, 7:49 PM CDT for Washington County, Florida. It was in force for 41 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
Jul 31, 2021, 7:49 PM CDT (00:49 UTC)
Expired
Jul 31, 2021, 8:30 PM CDT
In force
41 min
Issued by
NWS Tallahassee, FL

County Washington County, FL

The radar

The Eglin Afb radar (KEVX), 11 km from the middle of the area, began a volume at 00:51 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, 0.8 hours before the alert went out and 152 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 2021-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1786 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 00:00Z on 2021-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 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
1786 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
1181 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
99 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

927 
WWUS82 KTAE 010049
SPSTAE

Special Weather Statement
National Weather Service Tallahassee FL
849 PM EDT Sat Jul 31 2021
 
FLZ008>010-012-108-112-010130-
Coastal Bay FL-Central Walton FL-Holmes FL-Inland Bay FL-
South Walton FL-Washington FL-
849 PM EDT Sat Jul 31 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN BAY...SOUTHEASTERN
WALTON...SOUTHWESTERN HOLMES AND CENTRAL WASHINGTON COUNTIES UNTIL
930 PM EDT/830 PM CDT/...

At 848 PM EDT/748 PM CDT/, Doppler radar was tracking a strong
thunderstorm 11 miles southwest of Vernon, moving south at 25 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Panama City, Lynn Haven, Panama City Beach, Vernon, Bonifay,
Springfield, Hiland Park, Tyndall Air Force Base, Live Oak, Parker,
Ponce De Leon, Caryville, Westville, Ebro, Whitehead Crossroads,
Dirego Park, Gulf Resort Beach, West Panama City, Bahama Beach and
Holmes Valley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3077 8604 3081 8563 3012 8561 3014 8593
      3021 8604
TIME...MOT...LOC 0048Z 001DEG 23KT 3053 8588 

$$

JM

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 31, 7:14 PM CDTAreal Flood AdvisoryTAEHolmes, Walton2 hr
Jul 31, 9:00 PM CDTSpecial Weather StatementTAEJackson30 min
Jul 31, 9:07 PM CDTSpecial Weather StatementTAEGadsden38 min
Jul 31, 9:17 PM CDTAreal Flood AdvisoryTAEHolmes3 hr
Jul 31, 9:23 PM CDTSpecial Weather StatementTAEHolmes52 min
Aug 1, 5:34 AM CDTSpecial Marine WarningTAE86 min
Aug 1, 6:36 AM CDTSpecial Marine WarningTAE54 min
Aug 1, 2:49 PM CDTSpecial Weather StatementTAEWakulla41 min
Aug 1, 4:01 PM CDTSevere Thunderstorm WarningTAEGadsden29 min
Aug 1, 4:30 PM CDTSpecial Weather StatementTAELeon45 min
Aug 1, 4:52 PM CDTSpecial Weather StatementTAEJefferson38 min
Aug 1, 5:08 PM CDTSpecial Marine WarningTAE52 min
Aug 1, 5:15 PM CDTSpecial Weather StatementTAEMadison45 min
Aug 1, 5:37 PM CDTAreal Flood AdvisoryTAEJefferson113 min
Jul 31, 7:00 PM CDTSpecial Weather StatementTAEBen Hill, Irwin, Tift, Turner, Worth45 min
Jul 31, 8:07 PM CDTSpecial Weather StatementTAEBerrien, Cook, Lanier, Lowndes38 min
Jul 31, 8:45 PM CDTSpecial Weather StatementTAEBerrien, Cook, Lanier, Lowndes45 min
Jul 31, 9:38 PM CDTSpecial Weather StatementTAEBrooks52 min
Jul 31, 10:10 PM CDTSpecial Weather StatementTAEGrady35 min
Jul 31, 10:39 PM CDTSpecial Weather StatementTAEGrady51 min
Aug 1, 1:12 PM CDTSpecial Weather StatementTAECalhoun48 min
Aug 1, 3:02 PM CDTSpecial Weather StatementTAEBerrien, Irwin, Tift43 min
Aug 1, 3:12 PM CDTSpecial Weather StatementTAEBrooks, Colquitt, Cook33 min
Aug 1, 3:17 PM CDTSpecial Weather StatementTAEDecatur, Grady, Miller, Thomas28 min
Aug 1, 3:48 PM CDTSpecial Weather StatementTAEBerrien, Brooks, Cook, Decatur, Grady, Seminole and 1 more42 min
Aug 1, 4:31 PM CDTSpecial Weather StatementTAELanier44 min
Aug 1, 4:44 PM CDTAreal Flood AdvisoryTAEDecatur2 hr
Jul 31, 7:01 PM CDTSpecial Weather StatementTAEDale29 min

Nearby

Special Weather Statements in Florida, 2021Every special weather statement 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.