Alert archive / Alabama / Tornado Warnings in 2015

Tornado Warning 11, NWS Tallahassee, FL

April 19, 2015Henry County, Alabama

NWS Tallahassee, FL issued this tornado warning at Apr 19, 2015, 8:54 AM CDT for Henry County, Alabama. It was in force for 36 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 19, 2015, 8:54 AM CDT (13:54 UTC)
Expired: Apr 19, 2015, 9:30 AM CDT
In force: 36 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon

County Henry County, AL

The radar

The Ft Rucker radar (KEOX), 38 km from the middle of the area, began a volume at 13:56 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.

What was reported inside it

Time	Report	Where	Remark
Apr 19, 8:57 AM CDT	TSTM WND DMG	Abbeville, AL	SEVERAL POWER LINES DOWN AROUND ABBEVILLE. POSSIBLE TORNADO JUST SOUTH OF ABBEVILLE BASED ON DUAL POL DATA FROM EOX

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 19, 6:57 AM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 1.9 hours before the alert went out and 162 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: 760 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 636 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 119 m²/s²
0-3 km storm-relative helicity: 340 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

856 
WFUS52 KTAE 191354
TORTAE
ALC067-191430-
/O.NEW.KTAE.TO.W.0011.150419T1354Z-150419T1430Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
854 AM CDT SUN APR 19 2015

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN HENRY COUNTY IN SOUTHEASTERN ALABAMA...

* UNTIL 930 AM CDT
    
* AT 853 AM CDT...DOPPLER RADAR WAS TRACKING A CONFIRMED TORNADO OVER
  ABBEVILLE. DOPPLER RADAR SHOWED THIS TORNADO MOVING NORTHEAST AT 30
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  ABBEVILLE...SHORTERVILLE...WILLIS CROSSROADS...MURPHY STATION...
  DOUBLE BRIDGES...SCREAMER...COATES...THOMAS MILL CREEK...OTHO...
  ABBEVILLE MUNICIPAL A/P AND WALTER F. GEORGE LOCK AND DAM.

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 IN A MOBILE
HOME OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3177 8515 3176 8513 3174 8512 3170 8513
      3167 8510 3166 8508 3164 8509 3162 8506
      3158 8506 3151 8529 3153 8531
TIME...MOT...LOC 1353Z 229DEG 26KT 3155 8526 

$$

15-HARRIGAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 19, 7:47 AM CDT	Flash Flood Warning	TAE	Coffee, Dale, Geneva	3 hr
Apr 19, 8:18 AM CDT	Tornado Warning	TAE	Coffee, Geneva	27 min
Apr 19, 8:36 AM CDT	Tornado Warning	TAE	Dale, Henry	24 min
Apr 19, 8:42 AM CDT	Severe Thunderstorm Warning	TAE	Coffee, Dale	30 min
Apr 19, 8:58 AM CDT	Flash Flood Warning	TAE	Dale, Henry	3 hr
Apr 19, 9:18 AM CDT	Tornado Warning	TAE	Henry	42 min
Apr 19, 9:52 AM CDT	Tornado Warning	TAE	Houston	23 min
Apr 19, 10:11 AM CDT	Tornado Warning	TAE	Henry, Houston	34 min
Apr 19, 4:38 PM CDT	River Flood Warning	TAE	Dale	41 hr

Nearby

Tornado Warnings in Alabama, 2015 Every tornado warning in 2015 Tornadoes in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.