Alert archive / Florida / Tornado Warnings in 2017

Tornado Warning 77, NWS Tallahassee, FL

June 21, 2017Jackson County, Florida

NWS Tallahassee, FL issued this tornado warning at Jun 21, 2017, 12:03 PM CDT for Jackson County, Florida. It was in force for 15 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
Jun 21, 2017, 12:03 PM CDT (17:03 UTC)
Expired
Jun 21, 2017, 12:18 PM CDT
In force
15 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Jackson County, FL

The radar

The Eglin Afb radar (KEVX), 59 km from the middle of the area, began a volume at 17:03 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 12:00Z, 5.1 hours before the alert went out and 108 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 12:00Z on 2017-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 571 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 12:00Z on 2017-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 94 square meters per square second.1939Sfc1 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
571 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
740 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
94 m²/s²
0-3 km storm-relative helicity
151 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

431 
WFUS52 KTAE 211703
TORTAE
FLC063-211730-
/O.NEW.KTAE.TO.W.0077.170621T1703Z-170621T1730Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tallahassee FL
1203 PM CDT WED JUN 21 2017

The National Weather Service in Tallahassee has issued a

* Tornado Warning for...
  West central Jackson County in the Panhandle of Florida...

* Until 1230 PM CDT
    
* At 1203 PM CDT, a severe thunderstorm capable of producing a
  tornado was located 7 miles southwest of Marianna, moving north at
  15 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
  west central Jackson County, including the following locations:
  Kynesville, Cottondale Airport and Cottondale.

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 3070 8530 3069 8536 3082 8546 3085 8538
      3085 8528
TIME...MOT...LOC 1703Z 165DEG 15KT 3072 8534 

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

$$

30-PULLIN
1 follow-up statement
979 
WWUS52 KTAE 211718
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
1218 PM CDT WED JUN 21 2017

FLC063-211727-
/O.CAN.KTAE.TO.W.0077.000000T0000Z-170621T1730Z/
Jackson FL-
1218 PM CDT WED JUN 21 2017

...THE TORNADO WARNING FOR WEST CENTRAL JACKSON 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 3070 8530 3069 8536 3082 8546 3085 8538
      3085 8528
TIME...MOT...LOC 1716Z 165DEG 15KT 3078 8536 

$$

30-PULLIN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 20, 7:22 PM CDTTornado WarningTAECalhoun, Gulf, Liberty27 min
Jun 20, 7:29 PM CDTTornado WarningTAEBay, Calhoun, Jackson, Washington29 min
Jun 20, 7:37 PM CDTSpecial Marine WarningTAE83 min
Jun 20, 8:41 PM CDTTornado WarningTAEBay, Calhoun19 min
Jun 20, 9:02 PM CDTSpecial Marine WarningTAE58 min
Jun 20, 10:00 PM CDTSpecial Marine WarningTAE2 hr
Jun 20, 11:50 PM CDTTornado WarningTAEFranklin, Gulf23 min
Jun 20, 11:55 PM CDTSpecial Marine WarningTAE2 hr
Jun 21, 12:27 AM CDTSpecial Marine WarningTAE2 hr
Jun 21, 2:24 AM CDTSpecial Marine WarningTAE2 hr
Jun 21, 4:23 AM CDTSpecial Marine WarningTAE2 hr
Jun 21, 6:26 AM CDTSpecial Marine WarningTAE94 min
Jun 21, 7:57 AM CDTSpecial Marine WarningTAE93 min
Jun 21, 8:57 AM CDTFlash Flood WarningTAEBay3 hr
Jun 21, 9:25 AM CDTSpecial Marine WarningTAE95 min
Jun 21, 9:52 AM CDTFlash Flood WarningTAEBay, Walton, Washington3 hr
Jun 21, 11:28 AM CDTFlash Flood WarningTAEHolmes, Jackson, Washington3 hr

Nearby

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