Alert archive / Florida / Tornado Warnings in 2020

Tornado Warning 78, NWS Tallahassee, FL

October 29, 20204 counties in Florida

NWS Tallahassee, FL issued this tornado warning at Oct 29, 2020, 3:44 AM CDT for 4 counties in Florida. It was in force for 12 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: Oct 29, 2020, 3:44 AM CDT (08:44 UTC)
Expired: Oct 29, 2020, 3:56 AM CDT
In force: 12 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Bay County, FL, Calhoun County, FL, Jackson County, FL, Washington County, FL

The radar

The Eglin Afb radar (KEVX), 39 km from the middle of the area, began a volume at 08:46 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.

Issued	Product	Office	Lasted
Oct 28, 11:34 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 8.7 hours before the alert went out and 118 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 5 J/kg
Mixed-layer CIN: -98 J/kg
Mixed-layer LCL: 1015 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 171 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

621 
WFUS52 KTAE 290844
TORTAE
FLC005-013-063-133-290915-
/O.NEW.KTAE.TO.W.0078.201029T0844Z-201029T0915Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tallahassee FL
344 AM CDT Thu Oct 29 2020

The National Weather Service in Tallahassee has issued a

* Tornado Warning for...
  Southwestern Jackson County in the Panhandle of Florida...
  Northeastern Bay County in the Panhandle of Florida...
  Northwestern Calhoun County in the Panhandle of Florida...
  Southeastern Washington County in the Panhandle of Florida...

* Until 415 AM CDT.
    
* At 344 AM CDT, a severe thunderstorm capable of producing a tornado
  was located 10 miles north of Lynn Haven, moving northeast 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 tornadic thunderstorm will remain over mainly rural areas of
  southwestern Jackson, northeastern Bay, northwestern Calhoun and
  southeastern Washington Counties in the Panhandle of Florida,
  including the following locations... Betts, Moose Pond, Ridgetop,
  Fountain, Singer Road, Camps Head, Gainer Spring, Gilberts Mill,
  Center Lake and Bennett.

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 3032 8568 3038 8573 3068 8550 3066 8532
      3052 8526
TIME...MOT...LOC 0844Z 227DEG 40KT 3039 8566 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

21-WD

1 follow-up statement

853 
WWUS52 KTAE 290856
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
356 AM CDT Thu Oct 29 2020

FLC005-013-063-133-290906-
/O.CAN.KTAE.TO.W.0078.000000T0000Z-201029T0915Z/
Jackson FL-Bay FL-Calhoun FL-Washington FL-
356 AM CDT Thu Oct 29 2020

...THE TORNADO WARNING FOR SOUTHWESTERN JACKSON...NORTHEASTERN BAY...
NORTHWESTERN CALHOUN AND SOUTHEASTERN WASHINGTON COUNTIES IN THE
PANHANDLE OF FLORIDA IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 500 AM CDT for the Panhandle
of Florida.

LAT...LON 3032 8568 3038 8573 3068 8550 3066 8532
      3052 8526
TIME...MOT...LOC 0855Z 227DEG 40KT 3048 8554 

$$

55-SCHOLL

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 29, 2:53 AM CDT	Special Marine Warning	TAE		37 min
Oct 29, 3:29 AM CDT	Special Marine Warning	TAE		91 min
Oct 29, 10:36 AM CDT	Special Weather Statement	TAE	Jefferson	24 min
Oct 29, 1:34 PM CDT	Special Weather Statement	TAE	Dixie, Lafayette	56 min
Oct 29, 1:38 PM CDT	Special Weather Statement	TAE	Jefferson	37 min
Oct 29, 2:02 PM CDT	Special Weather Statement	TAE	Jefferson, Madison	43 min

Nearby

Tornado Warnings in Florida, 2020 Every tornado warning in 2020 Tornadoes 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.