Alert archive / Florida / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 13, NWS Tallahassee, FL

February 6, 2020Walton County, Washington County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Feb 6, 2020, 10:36 AM CST for Walton County, Washington 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
Feb 6, 2020, 10:36 AM CST (16:36 UTC)
Expired
Feb 6, 2020, 11:15 AM CST
In force
39 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

Counties Walton County, FL, Washington County, FL

The radar

The Eglin Afb radar (KEVX), 10 km from the middle of the area, began a volume at 16:35 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Feb 6, 3:27 AM CSTTornado WatchSPC9 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 4.6 hours before the alert went out and 149 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 2020-02-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 123 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 2020-02-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 488 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
123 J/kg
Mixed-layer CIN
-58 J/kg
Mixed-layer LCL
605 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
488 m²/s²
0-3 km storm-relative helicity
438 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.0

Open this sounding in Storm Lab

The text

As transmitted.

910 
WUUS52 KTAE 061636
SVRTAE
FLC131-133-061715-
/O.NEW.KTAE.SV.W.0013.200206T1636Z-200206T1715Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tallahassee FL
1036 AM CST Thu Feb 6 2020

The National Weather Service in Tallahassee has issued a

* Severe Thunderstorm Warning for...
  Southeastern Walton County in the Panhandle of Florida...
  Central Washington County in the Panhandle of Florida...

* Until 1115 AM CST.

* At 1036 AM CST, a severe thunderstorm was located 16 miles
  southeast of De Funiak Springs, moving northeast at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Vernon, Live Oak, Wausau, Hinsons Crossroads, Red Bay, Whitehead
  Crossroads, Bruce, Holmes Valley, Millers Ferry, Five Points,
  Smyrna, Spring Hollow and Sylvania.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until noon CST for the Panhandle of
Florida.

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

&&

LAT...LON 3076 8575 3061 8555 3041 8603 3052 8611
TIME...MOT...LOC 1636Z 230DEG 25KT 3051 8600 

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

38-GODSEY

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 5, 8:23 PM CSTCoastal Flood AdvisoryTAEDixie, Franklin, Jefferson, Taylor, Wakulla30 hr
Feb 6, 12:29 AM CSTWind AdvisoryTAEBay, Calhoun, Dixie, Franklin, Gadsden, Gulf and 10 more20 hr
Feb 6, 2:38 AM CSTRiver Flood WarningTAEWalton15 hr
Feb 6, 6:58 AM CSTRiver Flood WarningTAEHolmes, Washington21 days
Feb 6, 6:58 AM CSTRiver Flood WarningTAEWalton, Washington8 days
Feb 6, 6:58 AM CSTRiver Flood WarningTAEJackson32 hr
Feb 6, 9:07 AM CSTSpecial Marine WarningTAE113 min
Feb 6, 10:03 AM CSTSpecial Weather StatementTAEHolmes, Walton57 min
Feb 6, 10:39 AM CSTSevere Thunderstorm WarningTAEHolmes, Walton51 min
Feb 6, 11:22 AM CSTSevere Thunderstorm WarningTAEHolmes, Walton, Washington38 min
Feb 6, 11:30 AM CSTSevere Thunderstorm WarningTAEWalton30 min
Feb 6, 11:33 AM CSTSpecial Marine WarningTAE3 hr
Feb 6, 12:22 PM CSTSevere Thunderstorm WarningTAEHolmes, Jackson, Walton, Washington53 min
Feb 6, 1:58 PM CSTSevere Thunderstorm WarningTAECalhoun, Gadsden, Jackson, Liberty62 min
Feb 6, 2:43 PM CSTSevere Thunderstorm WarningTAEJefferson, Leon47 min
Feb 6, 3:02 PM CSTSevere Thunderstorm WarningTAECalhoun, Franklin, Gadsden, Gulf, Jackson, Leon and 2 more58 min
Feb 6, 3:22 PM CSTSpecial Marine WarningTAE113 min
Feb 6, 3:47 PM CSTSevere Thunderstorm WarningTAEFranklin, Gadsden, Jefferson, Leon, Liberty, Wakulla73 min
Feb 6, 4:52 PM CSTSevere Thunderstorm WarningTAEJefferson, Leon, Madison, Taylor, Wakulla68 min
Feb 6, 5:07 PM CSTSpecial Marine WarningTAE113 min
Feb 6, 5:53 PM CSTSevere Thunderstorm WarningTAELafayette, Madison, Taylor67 min

Nearby

Severe Thunderstorm Warnings in Florida, 2020Every severe thunderstorm warning 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.