Alert archive / Alabama / Tornado Warnings in 2018

Tornado Warning 1, NWS Tallahassee, FL

February 7, 2018Coffee County, Alabama

NWS Tallahassee, FL issued this tornado warning at Feb 7, 2018, 10:21 AM CST for Coffee County, Alabama. It was in force for 24 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: Feb 7, 2018, 10:21 AM CST (16:21 UTC)
Expired: Feb 7, 2018, 10:45 AM CST
In force: 24 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Coffee County, AL

The radar

The Ft Rucker radar (KEOX), 52 km from the middle of the area, began a volume at 16:23 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 nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 4.4 hours before the alert went out and 183 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: 718 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 266 m²/s²
0-3 km storm-relative helicity: 361 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

422 
WFUS52 KTAE 071621
TORTAE
ALC031-071645-
/O.NEW.KTAE.TO.W.0001.180207T1621Z-180207T1645Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tallahassee FL
1021 AM CST WED FEB 7 2018

The National Weather Service in Tallahassee has issued a

* Tornado Warning for...
  Southeastern Coffee County in southeastern Alabama...

* Until 1045 AM CST
    
* At 1020 AM CST, a severe thunderstorm capable of producing a
  tornado was located 8 miles north of Samson, or 13 miles south of
  Elba, 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 dangerous storm will be near...
  Enterprise around 1045 AM CST. 

Other locations impacted by this tornadic thunderstorm include
Goodman, Lucile, Keyton, Coppinville, Enterprise Municipal A/P,
Central City, Marvin Chapel, Cool Springs and Battens Crossroads.

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 3136 8579 3120 8579 3119 8599 3120 8599
      3119 8600 3119 8608 3125 8610
TIME...MOT...LOC 1620Z 260DEG 28KT 3123 8604 

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

$$

ADL

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 7, 10:56 AM CST	Severe Thunderstorm Warning	TAE	Dale, Henry, Houston	20 min
Feb 7, 11:06 AM CST	Severe Thunderstorm Warning	TAE	Geneva	39 min
Feb 7, 11:48 AM CST	Special Weather Statement	TAE	Houston	57 min
Feb 7, 12:09 PM CST	Severe Thunderstorm Warning	TAE	Houston	51 min

Nearby

Tornado Warnings in Alabama, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.