Alert archive / Florida / Tornado Warnings in 2021

Tornado Warning 79, NWS Tallahassee, FL

December 11, 2021Madison County, Florida

NWS Tallahassee, FL issued this tornado warning at Dec 11, 2021, 11:58 PM EST for Madison County, Florida. It was in force for 17 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
Dec 11, 2021, 11:58 PM EST (04:58 UTC)
Expired
Dec 12, 2021, 12:15 AM EST
In force
17 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

County Madison County, FL

The radar

The Moody AFB radar (KVAX), 62 km from the middle of the area, began a volume at 05:01 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, 5.0 hours before the alert went out and 105 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 2021-12-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 246 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 2021-12-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 191 square meters per square second.19395878Sfc1 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
246 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
596 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
191 m²/s²
0-3 km storm-relative helicity
216 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.9

Open this sounding in Storm Lab

The text

As transmitted.

002 
WFUS52 KTAE 120458
TORTAE
FLC079-120515-
/O.NEW.KTAE.TO.W.0079.211212T0458Z-211212T0515Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tallahassee FL
1158 PM EST Sat Dec 11 2021

The National Weather Service in Tallahassee has issued a

* Tornado Warning for...
  Southeastern Madison County in Big Bend of Florida...

* Until 1215 AM EST.
    
* At 1158 PM EST, a severe thunderstorm capable of producing a
  tornado was located near Suwannee River State Park, moving east at
  30 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This tornadic thunderstorm will remain over mainly rural areas of
  southeastern Madison County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3037 8319 3035 8319 3035 8321 3031 8321
      3029 8323 3029 8326 3036 8329 3042 8319
      3041 8318 3039 8318 3039 8317
TIME...MOT...LOC 0458Z 249DEG 25KT 3035 8321 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$
1 follow-up statement
724 
WWUS52 KTAE 120509
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
1209 AM EST Sun Dec 12 2021

FLC079-120519-
/O.EXP.KTAE.TO.W.0079.000000T0000Z-211212T0515Z/
Madison FL-
1209 AM EST Sun Dec 12 2021

...THE TORNADO WARNING FOR SOUTHEASTERN MADISON COUNTY WILL EXPIRE AT
1215 AM EST...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

LAT...LON 3037 8319 3035 8319 3035 8321 3031 8321
      3029 8323 3029 8326 3036 8329 3042 8319
      3041 8318 3039 8318 3039 8317
TIME...MOT...LOC 0509Z 249DEG 25KT 3037 8315 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 11, 11:47 PM ESTMarine Dense Fog AdvisoryTAE7 hr

Nearby

Tornado Warnings in Florida, 2021Every tornado warning in 2021Tornadoes 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.