Alert archive / Florida / Tornado Warnings in 2017

Tornado Warning 79, NWS Tallahassee, FL

October 7, 2017Bay County, Florida

NWS Tallahassee, FL issued this tornado warning at Oct 7, 2017, 4:24 PM CDT for Bay County, Florida. It was in force for 36 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 7, 2017, 4:24 PM CDT (21:24 UTC)
Expired
Oct 7, 2017, 5:00 PM CDT
In force
36 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Bay County, FL

The radar

The Eglin Afb radar (KEVX), 44 km from the middle of the area, began a volume at 21:24 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, 9.4 hours before the alert went out and 146 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 2017-10-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 513 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 12:00Z on 2017-10-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 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
513 J/kg
Mixed-layer CIN
-59 J/kg
Mixed-layer LCL
750 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
90 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

As transmitted.

062 
WFUS52 KTAE 072124
TORTAE
FLC005-072200-
/O.NEW.KTAE.TO.W.0079.171007T2124Z-171007T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tallahassee FL
424 PM CDT SAT OCT 7 2017

The National Weather Service in Tallahassee has issued a

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

* Until 500 PM CDT
    
* At 423 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Panama City Beach, moving northwest 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 dangerous storm will be near...
  Panama City Beach around 445 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Biltmore Beach, West Bay, St Andrews State Park, Edgewater Gulf
Beach, Sunnyside, Gulf Lagoon Beach, Laguna Beach, Gulf Resort Beach,
West Panama City and Bahama Beach.

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 3013 8572 3008 8578 3025 8596 3031 8583
TIME...MOT...LOC 2123Z 139DEG 29KT 3013 8579 

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

$$

04-MCDERMOTT
2 follow-up statements
959 
WWUS52 KTAE 072136
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
436 PM CDT SAT OCT 7 2017

FLC005-072200-
/O.CON.KTAE.TO.W.0079.000000T0000Z-171007T2200Z/
Bay FL-
436 PM CDT SAT OCT 7 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR WEST
CENTRAL BAY COUNTY...
    
At 436 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Panama City Beach, moving northwest 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
west central Bay County, including the following locations: West Bay,
Sunnyside, Laguna Beach, Gulf Resort Beach, Bahama Beach, Bid-a-Wee
and Edgewater Gulf Beach.

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 3021 8577 3018 8584 3025 8596 3031 8583
TIME...MOT...LOC 2136Z 139DEG 29KT 3021 8587 

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

$$

04-MCDERMOTT
732 
WWUS52 KTAE 072152
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
452 PM CDT SAT OCT 7 2017

FLC005-072201-
/O.EXP.KTAE.TO.W.0079.000000T0000Z-171007T2200Z/
Bay FL-
452 PM CDT SAT OCT 7 2017

...THE TORNADO WARNING FOR WEST CENTRAL BAY COUNTY WILL EXPIRE AT 500
PM CDT...
    
The tornadic thunderstorm which prompted the warning has weakened. 
Therefore, the warning will be allowed to expire.

LAT...LON 3021 8577 3018 8584 3025 8596 3031 8583
TIME...MOT...LOC 2151Z 139DEG 29KT 3020 8586 

$$

04-MCDERMOTT

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 6, 10:40 PM CDTSmall Craft AdvisoryTAE50 hr
Oct 7, 2:26 AM CDTHigh Surf AdvisoryTAEFranklin23 hr
Oct 7, 10:17 AM CDTTropical Storm WarningTAEBay, Gulf, Holmes, Walton, Washington24 hr
Oct 7, 3:25 PM CDTSpecial Marine WarningTAE35 min
Oct 7, 4:26 PM CDTSpecial Marine WarningTAE34 min
Oct 7, 4:46 PM CDTSevere Thunderstorm WarningTAEDixie, Lafayette, Taylor29 min
Oct 7, 5:07 PM CDTSpecial Weather StatementTAETaylor38 min
Oct 7, 5:43 PM CDTSevere Thunderstorm WarningTAELafayette, Taylor32 min
Oct 7, 5:54 PM CDTSpecial Marine WarningTAE36 min

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.