Alert archive / Florida / Tornado Warnings in 2020

Tornado Warning 20, NWS Tallahassee, FL

April 19, 2020Holmes County, Jackson County, Florida; Geneva County, Houston County, Alabama

NWS Tallahassee, FL issued this tornado warning at Apr 19, 2020, 11:55 PM CDT for Holmes County, Jackson County, Florida; Geneva County, Houston County, Alabama. It was in force for 20 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Apr 19, 2020, 11:55 PM CDT (04:55 UTC)
Expired
Apr 20, 2020, 12:15 AM CDT
In force
20 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Geneva County, AL, Houston County, AL, Holmes County, FL, Jackson County, FL

What was reported inside it

TimeReportWhereRemark
Apr 20, 12:00 AM CDTTSTM WND DMGGraceville, FLTREES DOWN WITH MINOR ROOF DAMAGE IN GRACEVILLE. TIME DETERMINED FROM RADAR.
Apr 20, 12:07 AM CDTTSTM WND DMG2 Sse Browntown, FLTREES DOWN IN GRACEVILLE AND CAMPBELLTON.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

IssuedProductOfficeLasted
Apr 19, 10:13 PM CDTTornado WatchSPC10 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 4.9 hours before the alert went out and 127 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 2020-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2182 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 2020-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 259 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
2182 J/kg
Mixed-layer CIN
-61 J/kg
Mixed-layer LCL
709 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
259 m²/s²
0-3 km storm-relative helicity
327 m²/s²
Significant tornado parameter
3.5
Supercell composite
17.9

Open this sounding in Storm Lab

The text

As transmitted.

967 
WFUS52 KTAE 200455
TORTAE
ALC061-069-FLC059-063-200515-
/O.NEW.KTAE.TO.W.0020.200420T0455Z-200420T0515Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tallahassee FL
Issued by National Weather Service Houston/Galveston TX
1155 PM CDT Sun Apr 19 2020

The National Weather Service in Tallahassee has issued a

* Tornado Warning for...
  Southeastern Geneva County in southeastern Alabama...
  Southeastern Houston County in southeastern Alabama...
  Northwestern Jackson County in the Panhandle of Florida...
  Northeastern Holmes County in the Panhandle of Florida...

* Until 1215 AM CDT.
    
* At 1155 PM CDT, a severe thunderstorm capable of producing a
  tornado was located near Graceville, moving east at 45 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 dangerous storm will be near...
  Graceville around 1200 AM CDT.
  Cottonwood around 1215 AM CDT.

Other locations impacted by this tornadic thunderstorm include
Malone, Fadette, Pansey, Grangeburg, Garretts Crossroads, Tendil
Crossing, Lovetown, Southern Junction, Sealy Springs and Noma.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3094 8563 3103 8561 3116 8516 3089 8512
TIME...MOT...LOC 0455Z 262DEG 39KT 3099 8558 

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

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 19, 10:36 PM CDTSevere Thunderstorm WarningTAEHolmes, Walton84 min
Apr 19, 11:49 PM CDTSevere Thunderstorm WarningTAEHolmes, Jackson, Washington56 min
Apr 20, 12:26 AM CDTSevere Thunderstorm WarningTAEJackson, Washington34 min
Apr 20, 12:30 AM CDTSevere Thunderstorm WarningTAEBay, Jackson, Walton, Washington32 min
Apr 20, 12:43 AM CDTSevere Thunderstorm WarningTAEHolmes, Walton, Washington47 min
Apr 20, 12:52 AM CDTSevere Thunderstorm WarningTAEGadsden, Jackson, Leon68 min
Apr 20, 1:24 AM CDTSpecial Marine WarningTAE2 hr
Apr 20, 1:35 AM CDTSevere Thunderstorm WarningTAEBay, Walton, Washington55 min
Apr 20, 2:32 AM CDTSpecial Weather StatementTAEGadsden, Leon, Liberty43 min
Apr 20, 2:33 AM CDTSpecial Marine WarningTAE57 min
Apr 20, 2:54 AM CDTSpecial Weather StatementTAEBay, Gulf, Liberty51 min
Apr 20, 3:05 AM CDTSpecial Marine WarningTAE3 hr
Apr 20, 3:07 AM CDTSpecial Weather StatementTAEWakulla38 min
Apr 20, 3:11 AM CDTSevere Thunderstorm WarningTAEBay, Franklin, Gulf, Liberty82 min
Apr 20, 3:47 AM CDTSevere Thunderstorm WarningTAEFranklin, Liberty, Wakulla43 min
Apr 20, 4:39 AM CDTSpecial Marine WarningTAE3 hr
Apr 20, 4:49 AM CDTSpecial Weather StatementTAESuwannee26 min
Apr 20, 4:52 AM CDTSpecial Weather StatementTAETaylor38 min
Apr 20, 5:13 AM CDTSevere Thunderstorm WarningTAEDixie, Lafayette, Taylor62 min
Apr 20, 5:35 AM CDTSevere Thunderstorm WarningTAEDixie, Taylor85 min
Apr 20, 7:00 AM CDTSevere Thunderstorm WarningTAEDixie15 min
Apr 20, 9:34 AM CDTRiver Flood WarningTAECalhoun, Franklin, Gulf, Liberty13 days
Apr 19, 10:55 PM CDTTornado WarningTAECoffee, Dale50 min
Apr 19, 11:10 PM CDTSevere Thunderstorm WarningTAEDale, Henry, Houston95 min
Apr 19, 11:29 PM CDTTornado WarningTAEDale, Henry27 min
Apr 19, 11:30 PM CDTTornado WarningTAECoffee, Dale, Geneva, Houston45 min
Apr 19, 11:36 PM CDTTornado WarningTAEDale, Henry24 min
Apr 19, 11:59 PM CDTTornado WarningTAEHenry31 min

Nearby

Tornado Warnings in Florida, 2020Tornado Warnings in Alabama, 2020Every tornado warning in 2020Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.