Alert archive / Florida / Tornado Warnings in 2020

Tornado Warning 77, NWS Tallahassee, FL

September 16, 2020Taylor County, Florida

NWS Tallahassee, FL issued this tornado warning at Sep 16, 2020, 11:48 PM EDT for Taylor County, Florida. It was in force for 10 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: Sep 16, 2020, 11:48 PM EDT (03:48 UTC)
Expired: Sep 16, 2020, 11:58 PM EDT
In force: 10 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Taylor County, FL

The radar

The Tallahassee radar (KTLH), 75 km from the middle of the area, began a volume at 03:51 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, 3.8 hours before the alert went out and 73 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: 852 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 535 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 302 m²/s²
0-3 km storm-relative helicity: 344 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 12.2

Open this sounding in Storm Lab

The text

As transmitted.

529 
WFUS52 KTAE 170348
TORTAE
FLC123-170415-
/O.NEW.KTAE.TO.W.0077.200917T0348Z-200917T0415Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tallahassee FL
1148 PM EDT Wed Sep 16 2020

The National Weather Service in Tallahassee has issued a

* Tornado Warning for...
  North central Taylor County in Big Bend of Florida...

* Until 1215 AM EDT.
    
* At 1148 PM EDT, a severe thunderstorm capable of producing a
  tornado was located near Perry, moving north 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
  north central Taylor County, including the following locations...
  Hampton Springs, Secotan and Boyd.

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 3004 8363 3006 8369 3023 8367 3017 8349
TIME...MOT...LOC 0348Z 197DEG 29KT 3009 8364 

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

$$

04-MCD

1 follow-up statement

002 
WWUS52 KTAE 170358
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
1158 PM EDT Wed Sep 16 2020

FLC123-170408-
/O.CAN.KTAE.TO.W.0077.000000T0000Z-200917T0415Z/
Taylor FL-
1158 PM EDT Wed Sep 16 2020

...THE TORNADO WARNING FOR NORTH CENTRAL TAYLOR COUNTY 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.

LAT...LON 3004 8363 3006 8369 3023 8367 3017 8349
TIME...MOT...LOC 0357Z 197DEG 29KT 3017 8361 

$$

04-MCD

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 16, 8:58 PM EDT	Special Marine Warning	TAE		2 hr
Sep 16, 10:05 PM EDT	River Flood Warning	TAE	Leon, Wakulla	4 days
Sep 16, 10:09 PM EDT	River Flood Warning	TAE	Leon, Liberty, Wakulla	60 hr
Sep 16, 10:38 PM EDT	Areal Flood Warning	TAE	Bay, Calhoun, Holmes, Walton, Washington	12 hr
Sep 16, 11:29 PM EDT	Areal Flood Warning	TAE	Calhoun, Gadsden, Gulf, Jackson, Liberty	11 hr
Sep 17, 12:01 AM EDT	Areal Flood Warning	TAE	Walton	10 hr
Sep 17, 12:33 AM EDT	River Flood Warning	TAE	Gadsden, Jackson	11 hr
Sep 17, 12:37 AM EDT	River Flood Warning	TAE	Calhoun, Franklin, Gulf, Liberty	8 days
Sep 17, 10:38 AM EDT	Areal Flood Warning	TAE	Bay, Calhoun, Gulf, Holmes, Jackson, Walton and 1 more	33 hr

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.