Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Tallahassee, FL

July 18, 2021Gadsden County, Liberty County, Florida

NWS Tallahassee, FL issued this special weather statement at Jul 18, 2021, 4:12 PM EDT for Gadsden County, Liberty 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
Jul 18, 2021, 4:12 PM EDT (20:12 UTC)
Expired
Jul 18, 2021, 5:00 PM EDT
In force
48 min
Issued by
NWS Tallahassee, FL

Counties Gadsden County, FL, Liberty County, FL

The radar

The Tallahassee radar (KTLH), 39 km from the middle of the area, began a volume at 20:12 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, 8.2 hours before the alert went out and 42 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 2021-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 912 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 2021-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 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
912 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
997 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
23 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

732 
WWUS82 KTAE 182012
SPSTAE

Special Weather Statement
National Weather Service Tallahassee FL
412 PM EDT Sun Jul 18 2021
 
FLZ016-017-026-027-182100-
Liberty FL-Gadsden FL-Inland Wakulla FL-Leon FL-
412 PM EDT Sun Jul 18 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN WAKULLA...GADSDEN...
CENTRAL LIBERTY AND SOUTHWESTERN LEON COUNTIES UNTIL 500 PM EDT...

At 411 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Greensboro to 16 miles east of Stonemill
Creek. Movement was northeast at 20 mph.

Winds in excess of 40 mph will be possible with these storms.

Locations impacted include...
Quincy, Greensboro, Gretna, East Camp, Jewel Fire Tower, Littman,
Juniper, Douglas City, Vilas, Hosford, Clio, Santa Clara, Poplar
Camp, Smith Creek, Quincy Airport, Lowry, Wetumpka, Bloxham, Twin
Pole and Sawdust.

LAT...LON 3005 8495 3071 8479 3069 8449 3036 8452
      3002 8464
TIME...MOT...LOC 2011Z 215DEG 16KT 3058 8484 3011 8491 

$$

42-DVD

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 9:57 AM EDTSpecial Marine WarningTAE65 min
Jul 18, 10:53 AM EDTSpecial Weather StatementTAEDixie52 min
Jul 18, 12:07 PM EDTSpecial Weather StatementTAELafayette53 min
Jul 18, 12:24 PM EDTSpecial Weather StatementTAETaylor51 min
Jul 18, 12:48 PM EDTSpecial Weather StatementTAELafayette27 min
Jul 18, 1:38 PM EDTSpecial Weather StatementTAEMadison52 min
Jul 18, 2:46 PM EDTSpecial Weather StatementTAEJackson44 min
Jul 18, 3:29 PM EDTSpecial Weather StatementTAECalhoun, Liberty46 min
Jul 18, 4:19 PM EDTSpecial Weather StatementTAELeon41 min
Jul 18, 4:41 PM EDTSpecial Weather StatementTAEGadsden, Leon, Wakulla64 min
Jul 18, 4:48 PM EDTAreal Flood AdvisoryTAELeon57 min
Jul 18, 5:06 PM EDTFlash Flood WarningTAELeon84 min
Jul 18, 5:38 PM EDTSpecial Weather StatementTAEJefferson52 min
Jul 18, 6:03 PM EDTSpecial Weather StatementTAEGrady, Thomas42 min
Jul 18, 6:12 PM EDTSevere Thunderstorm WarningTAEThomas51 min
Jul 18, 6:55 PM EDTSpecial Weather StatementTAEColquitt50 min
Jul 18, 7:09 PM EDTAreal Flood AdvisoryTAEColquitt2 hr
Jul 18, 7:41 PM EDTAreal Flood AdvisoryTAEMitchell64 min
Jul 18, 7:44 PM EDTAreal Flood AdvisoryTAEBerrien, Cook, Tift2 hr
Jul 18, 7:55 PM EDTAreal Flood AdvisoryTAEIrwin2 hr
Jul 18, 2:07 PM EDTSpecial Weather StatementTAEHenry23 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.