Alert archive / Florida / Tornado Warnings in 2019

Tornado Warning 65, NWS Tallahassee, FL

December 17, 2019Holmes County, Walton County, Florida; Geneva County, Alabama

NWS Tallahassee, FL issued this tornado warning at Dec 17, 2019, 3:58 AM CST for Holmes County, Walton County, Florida; Geneva County, Alabama. It was in force for 28 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 17, 2019, 3:58 AM CST (09:58 UTC)
Expired
Dec 17, 2019, 4:26 AM CST
In force
28 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Geneva County, AL, Holmes County, FL, Walton County, FL

The radar

The Eglin Afb radar (KEVX), 47 km from the middle of the area, began a volume at 10:01 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, 10.0 hours before the alert went out and 180 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 2019-12-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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 2019-12-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 138 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
786 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
138 m²/s²
0-3 km storm-relative helicity
205 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

251 
WFUS52 KTAE 170958
TORTAE
ALC061-FLC059-131-171045-
/O.NEW.KTAE.TO.W.0065.191217T0958Z-191217T1045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tallahassee FL
358 AM CST Tue Dec 17 2019

The National Weather Service in Tallahassee has issued a

* Tornado Warning for...
  Southwestern Geneva County in southeastern Alabama...
  North central Walton County in the Panhandle of Florida...
  Northwestern Holmes County in the Panhandle of Florida...

* Until 445 AM CST.
    
* At 358 AM CST, a severe thunderstorm capable of producing a tornado
  was located 12 miles south of Samson, or 12 miles east of Florala,
  moving northeast at 35 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
  southwestern Geneva, north central Walton and northwestern Holmes
  Counties, including the following locations... Darlington, Gaskin,
  Sweetgum Head and Royals Crossroads.

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 3091 8610 3097 8617 3108 8603 3098 8593
TIME...MOT...LOC 0958Z 236DEG 29KT 3095 8613 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

13-LN
2 follow-up statements
462 
WWUS52 KTAE 171015
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
415 AM CST Tue Dec 17 2019

FLC059-131-171025-
/O.CAN.KTAE.TO.W.0065.000000T0000Z-191217T1045Z/
Walton FL-Holmes FL-
415 AM CST Tue Dec 17 2019

...THE TORNADO WARNING FOR NORTH CENTRAL WALTON AND NORTHWESTERN
HOLMES COUNTIES IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 3108 8603 3099 8594 3099 8603 3101 8606
TIME...MOT...LOC 1015Z 236DEG 29KT 3103 8600 

$$

ALC061-171045-
/O.CON.KTAE.TO.W.0065.000000T0000Z-191217T1045Z/
Geneva AL-
415 AM CST Tue Dec 17 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 AM CST FOR
SOUTHWESTERN GENEVA COUNTY...
    
At 415 AM CST, a severe thunderstorm capable of producing a tornado
was located near Samson, or near Geneva, moving northeast at 35 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
southwestern Geneva 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 3108 8603 3099 8594 3099 8603 3101 8606
TIME...MOT...LOC 1015Z 236DEG 29KT 3103 8600 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

13-LN
579 
WWUS52 KTAE 171026
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
426 AM CST Tue Dec 17 2019

ALC061-171036-
/O.CAN.KTAE.TO.W.0065.000000T0000Z-191217T1045Z/
Geneva AL-
426 AM CST Tue Dec 17 2019

...THE TORNADO WARNING FOR SOUTHWESTERN GENEVA COUNTY IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

LAT...LON 3108 8603 3099 8594 3099 8603 3101 8606
TIME...MOT...LOC 1026Z 236DEG 29KT 3108 8591 

$$

13-LN

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 17, 1:23 AM CSTSmall Craft AdvisoryTAE6 days
Dec 17, 1:38 AM CSTRip Current StatementTAEGulf46 hr
Dec 17, 3:34 AM CSTTornado WarningTAEWalton28 min
Dec 17, 5:43 AM CSTSevere Thunderstorm WarningTAEHolmes, Jackson47 min
Dec 17, 6:32 AM CSTTornado WarningTAEHolmes, Jackson28 min
Dec 17, 6:40 AM CSTSevere Thunderstorm WarningTAEHolmes, Jackson50 min
Dec 17, 7:09 AM CSTTornado Warning Tornado observedTAEJackson36 min
Dec 17, 7:11 AM CSTSpecial Marine WarningTAE94 min
Dec 17, 8:44 AM CSTSpecial Marine WarningTAE31 min
Dec 17, 8:58 AM CSTSevere Thunderstorm WarningTAEBay, Calhoun, Jackson, Liberty47 min
Dec 17, 9:13 AM CSTSpecial Marine WarningTAE2 hr
Dec 17, 9:28 AM CSTSevere Thunderstorm WarningTAECalhoun, Gadsden, Jackson, Liberty47 min
Dec 17, 10:16 AM CSTSevere Thunderstorm WarningTAEBay, Calhoun, Gulf, Liberty59 min
Dec 17, 11:00 AM CSTSpecial Marine WarningTAE2 hr
Dec 17, 11:08 AM CSTSevere Thunderstorm WarningTAECalhoun, Franklin, Gulf, Leon, Liberty, Wakulla67 min
Dec 17, 12:08 PM CSTSpecial Weather StatementTAEJefferson, Wakulla52 min
Dec 17, 12:47 PM CSTSevere Thunderstorm WarningTAEMadison43 min
Dec 17, 12:52 PM CSTSpecial Marine WarningTAE113 min
Dec 17, 12:57 PM CSTSpecial Marine WarningTAE2 hr
Dec 17, 2:04 AM CSTSevere Thunderstorm WarningTAECoffee, Geneva56 min
Dec 17, 2:57 AM CSTSpecial Weather StatementTAECoffee48 min
Dec 17, 3:20 AM CSTSevere Thunderstorm WarningTAECoffee, Dale, Geneva, Houston55 min
Dec 17, 4:17 AM CSTTornado WarningTAEGeneva27 min
Dec 17, 4:42 AM CSTSevere Thunderstorm WarningTAEDale, Geneva, Houston33 min
Dec 17, 6:30 AM CSTTornado WarningTAEHenry17 min
Dec 17, 6:58 AM CSTTornado WarningTAEHouston32 min
Dec 17, 9:03 AM CSTSevere Thunderstorm WarningTAEHouston42 min

Nearby

Tornado Warnings in Florida, 2019Tornado Warnings in Alabama, 2019Every tornado warning in 2019Tornadoes in 2019

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.