Alert archive / Alabama / Tornado Warnings in 2017

Tornado Warning 17, NWS Tallahassee, FL

January 21, 2017Coffee County, Geneva County, Alabama

NWS Tallahassee, FL issued this tornado warning at Jan 21, 2017, 9:18 PM CST for Coffee County, Geneva County, Alabama. 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
Jan 21, 2017, 9:18 PM CST (03:18 UTC)
Expired
Jan 21, 2017, 9:33 PM CST
In force
15 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Coffee County, AL, Geneva County, AL

The radar

The Ft Rucker radar (KEOX), 59 km from the middle of the area, began a volume at 03:16 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 21, 6:51 PM CSTTornado Watch PDSSPC8 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 3.3 hours before the alert went out and 192 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 2017-01-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 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 2017-01-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 square meters per square second.1939587897117Sfc1 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
4 J/kg
Mixed-layer CIN
-175 J/kg
Mixed-layer LCL
1065 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
92 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

619 
WFUS52 KTAE 220318
TORTAE
ALC031-061-220400-
/O.NEW.KTAE.TO.W.0017.170122T0318Z-170122T0400Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tallahassee FL
918 PM CST SAT JAN 21 2017

The National Weather Service in Tallahassee has issued a

* Tornado Warning for...
  Southern Coffee County in southeastern Alabama...
  Northwestern Geneva County in southeastern Alabama...

* Until 1000 PM CST
    
* At 918 PM CST, a severe thunderstorm capable of producing a tornado
  was located near Opp, moving northeast at 45 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...
  Enterprise and New Brockton around 950 PM CST. 
  Fort Rucker around 1000 PM CST. 

Other locations impacted by this tornadic thunderstorm include
Clintonville, Coppinville, Rhoades, Keyton, Perry Store, Battens
Crossroads, Estothel, Central City, Marvin Chapel and Enterprise
Municipal A/P.

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 3129 8619 3145 8579 3128 8579 3118 8590
      3113 8619 3124 8620
TIME...MOT...LOC 0318Z 240DEG 38KT 3119 8622 

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

$$

42-DVD
1 follow-up statement
249 
WWUS52 KTAE 220333
SVSTAE

Severe Weather Statement
National Weather Service Tallahassee FL
933 PM CST SAT JAN 21 2017

ALC031-061-220343-
/O.CAN.KTAE.TO.W.0017.000000T0000Z-170122T0400Z/
Coffee AL-Geneva AL-
933 PM CST SAT JAN 21 2017

...THE TORNADO WARNING FOR SOUTHERN COFFEE AND NORTHWESTERN GENEVA
COUNTIES 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.  However small hail and
heavy rain are still possible with this thunderstorm.

A tornado watch remains in effect until 300 AM CST for southeastern
Alabama.

LAT...LON 3129 8619 3145 8579 3128 8579 3118 8590
      3113 8619 3124 8620
TIME...MOT...LOC 0331Z 240DEG 38KT 3127 8606 

$$

42-DVD

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 21, 9:35 PM CSTFlash Flood WarningTAECoffee, Dale5 hr
Jan 21, 10:06 PM CSTSevere Thunderstorm WarningTAEDale, Henry39 min
Jan 21, 10:13 PM CSTFlash Flood WarningTAEHenry5 hr
Jan 21, 11:59 PM CSTSevere Thunderstorm WarningTAEHenry, Houston46 min
Jan 22, 1:59 AM CSTSevere Thunderstorm WarningTAEHouston46 min
Jan 22, 2:17 AM CSTRiver Flood WarningTAEDale57 hr
Jan 22, 2:39 AM CSTWind AdvisoryTAECoffee, Dale, Geneva, Henry, Houston14 hr
Jan 22, 8:25 AM CSTRiver Flood WarningTAEGeneva4 days
Jan 22, 9:12 AM CSTSevere Thunderstorm WarningTAEDale, Geneva, Henry, Houston21 min
Jan 22, 9:57 AM CSTSevere Thunderstorm WarningTAEGeneva48 min
Jan 22, 10:28 AM CSTSevere Thunderstorm WarningTAECoffee, Dale, Geneva, Houston47 min
Jan 22, 11:16 AM CSTSevere Thunderstorm WarningTAEDale, Henry, Houston29 min
Jan 22, 11:22 AM CSTSevere Thunderstorm WarningTAECoffee, Dale, Geneva53 min
Jan 22, 12:12 PM CSTSevere Thunderstorm WarningTAECoffee, Dale, Geneva, Henry, Houston48 min
Jan 22, 12:23 PM CSTTornado WarningTAEDale, Geneva, Houston37 min
Jan 22, 12:56 PM CSTTornado WarningTAEHenry, Houston34 min
Jan 22, 12:59 PM CSTSevere Thunderstorm WarningTAEDale, Geneva, Henry, Houston46 min
Jan 22, 1:20 PM CSTTornado WarningTAEHenry25 min
Jan 22, 1:39 PM CSTTornado WarningTAEHouston36 min

Nearby

Tornado Warnings in Alabama, 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.