Alert archive / Florida / Tornado Warnings in 2017

Tornado Warning 62, NWS Tallahassee, FL

May 4, 2017Bay County, Calhoun County, Gulf County, Florida

NWS Tallahassee, FL issued this tornado warning at May 4, 2017, 6:47 AM CDT for Bay County, Calhoun County, Gulf County, Florida. 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: May 4, 2017, 6:47 AM CDT (11:47 UTC)
Expired: May 4, 2017, 7:15 AM CDT
In force: 28 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Bay County, FL, Calhoun County, FL, Gulf County, FL

The radar

The Eglin Afb radar (KEVX), 66 km from the middle of the area, began a volume at 11:49 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, 11.8 hours before the alert went out and 122 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2574 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: -41 m²/s²
0-3 km storm-relative helicity: -16 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

584 
WFUS52 KTAE 041147
TORTAE
FLC005-013-045-041215-
/O.NEW.KTAE.TO.W.0062.170504T1147Z-170504T1215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tallahassee FL
647 AM CDT THU MAY 4 2017

The National Weather Service in Tallahassee has issued a

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

* Until 715 AM CDT
    
* At 646 AM CDT, a severe thunderstorm capable of producing a tornado
  was located over Tyndall Air Force Base, or 8 miles south of
  Callaway, moving northeast at 40 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...
  Callaway around 655 AM CDT. 

Other locations impacted by this tornadic thunderstorm include
Wewahitchka, Wetappo, Allanton and Parker.

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 3002 8571 3034 8543 3013 8517 2992 8556
TIME...MOT...LOC 1146Z 229DEG 35KT 3001 8557 

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

$$

11-MOORE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 8:27 PM CDT	Gale Warning	TAE		3 hr
May 4, 2:53 AM CDT	Gale Warning	TAE		41 hr
May 4, 2:58 AM CDT	Rip Current Statement	TAE	Bay, Franklin, Gulf, Walton	64 hr
May 4, 2:58 AM CDT	High Surf Advisory	TAE	Bay, Gulf, Walton	46 hr
May 4, 6:21 AM CDT	Special Marine Warning	TAE		24 min
May 4, 6:40 AM CDT	Special Marine Warning	TAE		65 min
May 4, 7:20 AM CDT	Severe Thunderstorm Warning	TAE	Bay, Calhoun, Gulf, Liberty	40 min
May 4, 8:28 AM CDT	Special Marine Warning	TAE		62 min
May 4, 8:30 AM CDT	Severe Thunderstorm Warning	TAE	Franklin, Liberty	45 min
May 4, 9:05 AM CDT	Special Marine Warning	TAE		55 min
May 4, 9:08 AM CDT	Severe Thunderstorm Warning	TAE	Franklin, Liberty, Wakulla	33 min
May 4, 9:29 AM CDT	Severe Thunderstorm Warning	TAE	Leon	18 min
May 4, 9:44 AM CDT	Severe Thunderstorm Warning	TAE	Jefferson, Leon	46 min
May 4, 3:12 PM CDT	Severe Thunderstorm Warning	TAE	Lafayette, Taylor	29 min

Nearby

Tornado Warnings in Florida, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.