Alert archive / Florida / Tornado Warnings in 2017

Tornado Warning 15, NWS Tallahassee, FL

January 2, 2017Liberty County, Florida

NWS Tallahassee, FL issued this tornado warning at Jan 2, 2017, 11:20 PM EST for Liberty County, Florida. It was in force for 40 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
Jan 2, 2017, 11:20 PM EST (04:20 UTC)
Expired
Jan 3, 2017, 12:00 AM EST
In force
40 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

County Liberty County, FL

The radar

The Tallahassee radar (KTLH), 64 km from the middle of the area, began a volume at 04:23 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.

IssuedProductOfficeLasted
Jan 2, 4:46 PM ESTTornado WatchSPC8 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 4.3 hours before the alert went out and 67 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 2017-01-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 202 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 2017-01-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 138 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
202 J/kg
Mixed-layer CIN
-97 J/kg
Mixed-layer LCL
638 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
138 m²/s²
0-3 km storm-relative helicity
182 m²/s²
Significant tornado parameter
0.1
Supercell composite
3.4

Open this sounding in Storm Lab

The text

As transmitted.

317 
WFUS52 KTAE 030420
TORTAE
FLC077-030500-
/O.NEW.KTAE.TO.W.0015.170103T0420Z-170103T0500Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tallahassee FL
1120 PM EST MON JAN 2 2017

The National Weather Service in Tallahassee has issued a

* Tornado Warning for...
  Southern Liberty County in Big Bend of Florida...

* Until midnight EST
    
* At 1120 PM EST, a severe thunderstorm capable of producing a
  tornado was located 11 miles east of Stonemill Creek, or 23 miles
  north of Apalachicola, moving east at 30 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
  southern Liberty County, including the following locations: East
  Camp, Jewel Fire Tower, Owens Bridge, Kern, Poplar Camp, Twin Pole
  and Wilma.

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 3009 8507 3030 8475 3005 8464 3002 8502
TIME...MOT...LOC 0420Z 248DEG 27KT 3008 8500 

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

$$

38-GODSEY

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 2, 7:25 PM ESTSevere Thunderstorm WarningTAEBay, Holmes, Walton, Washington80 min
Jan 2, 7:40 PM ESTSpecial Marine WarningTAE95 min
Jan 2, 8:05 PM ESTSevere Thunderstorm WarningTAEBay, Calhoun, Holmes, Jackson, Washington55 min
Jan 2, 8:13 PM ESTFlash Flood WarningTAEHolmes, Jackson, Washington3 hr
Jan 2, 8:45 PM ESTSevere Thunderstorm WarningTAEJackson60 min
Jan 2, 8:57 PM ESTSevere Thunderstorm WarningTAEBay, Calhoun, Gadsden, Jackson, Liberty, Washington63 min
Jan 2, 9:06 PM ESTSpecial Marine WarningTAE84 min
Jan 2, 9:45 PM ESTSevere Thunderstorm WarningTAEGadsden, Liberty45 min
Jan 2, 11:18 PM ESTSevere Thunderstorm WarningTAEWalton, Washington27 min
Jan 3, 2:30 AM ESTSpecial Marine WarningTAE60 min
Jan 3, 5:09 AM ESTSpecial Marine WarningTAE66 min
Jan 3, 3:36 PM ESTRiver Flood WarningTAECalhoun, Franklin, Gulf, Liberty7 days

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.