Alert archive / Florida / Special Weather Statements in 2020

Special Weather Statement, NWS Tallahassee, FL

August 24, 2020Walton County, Florida

NWS Tallahassee, FL issued this special weather statement at Aug 24, 2020, 11:12 PM CDT for Walton County, Florida. It was in force for 48 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
Aug 24, 2020, 11:12 PM CDT (04:12 UTC)
Expired
Aug 25, 2020, 12:00 AM CDT
In force
48 min
Issued by
NWS Tallahassee, FL

County Walton County, FL

The radar

The Eglin Afb radar (KEVX), 53 km from the middle of the area, began a volume at 04:15 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, 4.2 hours before the alert went out and 202 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 2020-08-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1041 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 2020-08-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 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
1041 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
1101 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
113 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

265 
WWUS82 KTAE 250412
SPSTAE

Special Weather Statement
National Weather Service Tallahassee FL
1112 PM CDT Mon Aug 24 2020
 
FLZ007-250500-
North Walton FL-
1112 PM CDT Mon Aug 24 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN WALTON COUNTY UNTIL
MIDNIGHT CDT...

At 1111 PM CDT, Doppler radar was tracking a strong thunderstorm 11
miles west of De Funiak Springs, moving northwest at 10 mph.

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

Locations impacted include...
Eglin Air Force Base, Paxton, Gordon, Pond Creek, Fox Hill,
Flowersville, New Harmony and Mossy Head.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

A Tornado Watch remains in effect until midnight CDT for the
Panhandle of Florida.

LAT...LON 3099 8639 3099 8631 3077 8624 3072 8634
      3076 8639
TIME...MOT...LOC 0411Z 156DEG 9KT 3078 8631 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 24, 7:10 PM CDTTornado WarningTAEJackson35 min
Aug 24, 7:25 PM CDTSpecial Weather StatementTAEJackson50 min
Aug 24, 9:52 PM CDTSpecial Marine WarningTAE53 min
Aug 24, 10:16 PM CDTSpecial Weather StatementTAEWalton59 min
Aug 25, 3:45 AM CDTHigh Surf AdvisoryTAEBay, Walton39 hr
Aug 24, 7:40 PM CDTSpecial Weather StatementTAEHouston50 min

Nearby

Special Weather Statements in Florida, 2020Every special weather statement in 2020

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.