Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 5, NWS Tallahassee, FL

January 27, 2021Gadsden County, Florida; Decatur County, Georgia

NWS Tallahassee, FL issued this severe thunderstorm warning at Jan 27, 2021, 10:18 AM EST for Gadsden County, Florida; Decatur County, Georgia. It was in force for 42 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
Jan 27, 2021, 10:18 AM EST (15:18 UTC)
Expired
Jan 27, 2021, 11:00 AM EST
In force
42 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

Counties Gadsden County, FL, Decatur County, GA

The radar

The Tallahassee radar (KTLH), 52 km from the middle of the area, began a volume at 15:18 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, 3.3 hours before the alert went out and 54 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 2021-01-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 128 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 12:00Z on 2021-01-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 183 square meters per square second.1939587897Sfc1 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
128 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
548 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
183 m²/s²
0-3 km storm-relative helicity
308 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.6

Open this sounding in Storm Lab

The text

As transmitted.

631 
WUUS52 KTAE 271518
SVRTAE
FLC039-GAC087-271600-
/O.NEW.KTAE.SV.W.0005.210127T1518Z-210127T1600Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tallahassee FL
1018 AM EST Wed Jan 27 2021

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  Northwestern Gadsden County in Big Bend of Florida...
  South central Decatur County in southwestern Georgia...

* Until 1100 AM EST.

* At 1017 AM EST, a severe thunderstorm was located near
  Chattahoochee, or 16 miles west of Quincy, moving east at 25 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Quincy, Chattahoochee, Greensboro, Gretna, Littman, Douglas City,
  Mount Pleasant, Hardin Heights, Rosedale, Faceville, Santa Clara,
  Hardaway, Sycamore, Quincy Airport, River Junction and Jinks.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3056 8451 3058 8488 3060 8488 3060 8491
      3064 8491 3065 8489 3066 8489 3068 8487
      3070 8486 3071 8484 3080 8451
TIME...MOT...LOC 1517Z 255DEG 23KT 3065 8485 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

11-MM
1 follow-up statement
379 
WWUS52 KTAE 271555
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
1055 AM EST Wed Jan 27 2021

FLC039-GAC087-271605-
/O.EXP.KTAE.SV.W.0005.000000T0000Z-210127T1600Z/
Gadsden FL-Decatur GA-
1055 AM EST Wed Jan 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN GADSDEN AND SOUTH
CENTRAL DECATUR COUNTIES WILL EXPIRE AT 1100 AM EST...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
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 3056 8451 3058 8488 3060 8488 3060 8491
      3064 8491 3065 8489 3066 8489 3068 8487
      3070 8486 3071 8484 3080 8451
TIME...MOT...LOC 1555Z 255DEG 23KT 3071 8459 

$$

11-MM

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 26, 7:27 PM ESTAreal Flood AdvisoryTAEFranklin, Gulf3 hr
Jan 26, 7:33 PM ESTSpecial Marine WarningTAE87 min
Jan 26, 9:34 PM ESTMarine Dense Fog AdvisoryTAE15 hr
Jan 27, 1:50 AM ESTSmall Craft AdvisoryTAE38 hr
Jan 27, 8:05 AM ESTSevere Thunderstorm WarningTAEJackson25 min
Jan 27, 8:26 AM ESTSevere Thunderstorm WarningTAEJackson34 min
Jan 27, 8:38 AM ESTTornado WarningTAEJackson37 min
Jan 27, 8:46 AM ESTSpecial Weather StatementTAECalhoun44 min
Jan 27, 9:16 AM ESTSpecial Weather StatementTAEBay, Washington44 min
Jan 27, 9:27 AM ESTSpecial Weather StatementTAECalhoun63 min
Jan 27, 9:32 AM ESTSevere Thunderstorm WarningTAECalhoun, Gadsden, Jackson, Liberty43 min
Jan 27, 10:10 AM ESTSpecial Marine WarningTAE3 hr
Jan 27, 10:54 AM ESTSpecial Weather StatementTAEGadsden, Leon66 min
Jan 27, 10:59 AM ESTSevere Thunderstorm WarningTAEGadsden, Leon, Liberty46 min
Jan 27, 11:11 AM ESTSpecial Weather StatementTAEFranklin, Gulf, Liberty, Wakulla49 min
Jan 27, 11:20 AM ESTTornado WarningTAEGadsden, Leon25 min
Jan 27, 11:34 AM ESTTornado WarningTAEGadsden, Jefferson, Leon26 min
Jan 27, 11:50 AM ESTTornado Warning Tornado observedTAEJefferson, Leon40 min
Jan 27, 12:14 PM ESTSpecial Weather StatementTAEFranklin, Liberty46 min
Jan 27, 12:21 PM ESTTornado WarningTAEJefferson, Madison, Taylor39 min
Jan 27, 12:41 PM ESTSpecial Marine WarningTAE3 hr
Jan 27, 12:55 PM ESTSevere Thunderstorm WarningTAEMadison50 min
Jan 27, 2:23 PM ESTSpecial Weather StatementTAEDixie, Lafayette82 min
Jan 27, 9:07 AM ESTSevere Thunderstorm WarningTAEDecatur, Seminole38 min
Jan 27, 10:27 AM ESTSevere Thunderstorm WarningTAEColquitt, Grady, Thomas48 min
Jan 27, 12:19 PM ESTSpecial Weather StatementTAELanier41 min

Nearby

Severe Thunderstorm Warnings in Florida, 2021Severe Thunderstorm Warnings in Georgia, 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.