Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 67, NWS Tallahassee, FL

April 11, 2021Dixie County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Apr 11, 2021, 5:36 AM EDT for Dixie County, Florida. It was in force for 39 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
Apr 11, 2021, 5:36 AM EDT (09:36 UTC)
Expired
Apr 11, 2021, 6:15 AM EDT
In force
39 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Dixie County, FL

The radar

The Moody AFB radar (KVAX), 145 km from the middle of the area, began a volume at 09:37 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, 9.6 hours before the alert went out and 153 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 2021-04-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 2021-04-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 146 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1513 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
146 m²/s²
0-3 km storm-relative helicity
164 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

879 
WUUS52 KTAE 110936
SVRTAE
FLC029-111015-
/O.NEW.KTAE.SV.W.0067.210411T0936Z-210411T1015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tallahassee FL
536 AM EDT Sun Apr 11 2021

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  Dixie County in Big Bend of Florida...

* Until 615 AM EDT.

* At 536 AM EDT, a severe thunderstorm was located near Horseshoe
  Point, or 12 miles southwest of Cross City, moving northeast at 40
  mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Cross City, Horseshoe Point, Horseshoe Beach, Shamrock, Cross City
  Airport, Shired Island, Old Town, Eugene, Fletcher, Yellow Jacket
  and Fanning Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2956 8295 2954 8298 2947 8298 2945 8301
      2940 8303 2936 8331 2938 8333 2973 8327
      2975 8294 2972 8294 2972 8296 2970 8294
      2970 8296 2964 8296 2963 8297 2958 8295
      2959 8294
TIME...MOT...LOC 0936Z 245DEG 35KT 2949 8324 

HAIL...1.00IN
WIND...60MPH
 
$$
1 follow-up statement
204 
WWUS52 KTAE 111013
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
613 AM EDT Sun Apr 11 2021

FLC029-111022-
/O.EXP.KTAE.SV.W.0067.000000T0000Z-210411T1015Z/
Dixie FL-
613 AM EDT Sun Apr 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR DIXIE COUNTY WILL EXPIRE AT
615 AM EDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

LAT...LON 2956 8295 2954 8298 2947 8298 2945 8301
      2940 8303 2936 8331 2938 8333 2973 8327
      2975 8294 2972 8294 2972 8296 2970 8294
      2970 8296 2964 8296 2963 8297 2958 8295
      2959 8294
TIME...MOT...LOC 1012Z 245DEG 35KT 2964 8287 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 11, 2:36 AM EDTSpecial Marine WarningTAE114 min
Apr 11, 2:59 AM EDTSevere Thunderstorm WarningTAEFranklin, Gulf, Liberty61 min
Apr 11, 3:25 AM EDTSpecial Marine WarningTAE65 min
Apr 11, 3:53 AM EDTSpecial Marine WarningTAE82 min
Apr 11, 3:59 AM EDTSpecial Weather StatementTAEGulf, Liberty, Wakulla61 min
Apr 11, 4:30 AM EDTSpecial Marine WarningTAE2 hr
Apr 11, 4:39 AM EDTSpecial Weather StatementTAEBay, Calhoun51 min
Apr 11, 4:57 AM EDTSpecial Weather StatementTAEDixie, Lafayette, Madison, Taylor48 min
Apr 11, 5:13 AM EDTSpecial Marine WarningTAE92 min
Apr 11, 5:44 AM EDTSpecial Weather StatementTAEMadison46 min
Apr 11, 6:26 AM EDTSpecial Marine WarningTAE3 hr
Apr 11, 6:42 AM EDTSpecial Marine WarningTAE63 min
Apr 11, 7:10 AM EDTSpecial Weather StatementTAEBay, Gulf50 min
Apr 11, 9:12 AM EDTSpecial Weather StatementTAELafayette48 min
Apr 11, 9:17 AM EDTSpecial Marine WarningTAE63 min
Apr 11, 2:10 PM EDTSpecial Weather StatementTAEBay35 min
Apr 11, 3:04 PM EDTSpecial Weather StatementTAELiberty26 min

Nearby

Severe Thunderstorm Warnings in Florida, 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.