Alert archive / Alabama / Tornado Warnings in 2007

Tornado Warning 138, NWS Birmingham, AL

October 18, 2007Sumter County, Alabama

NWS Birmingham, AL issued this tornado warning at Oct 18, 2007, 2:58 PM CDT for Sumter County, Alabama. It was in force for 32 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 18, 2007, 2:58 PM CDT (19:58 UTC)
Expired: Oct 18, 2007, 3:30 PM CDT
In force: 32 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

County Sumter County, AL

The radar

The Birmingham radar (KBMX), 147 km from the middle of the area, began a volume at 20:01 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.

Issued	Product	Office	Lasted
Oct 18, 1:31 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 8.0 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-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: 234 J/kg
Mixed-layer CIN: -85 J/kg
Mixed-layer LCL: 632 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 246 m²/s²
0-3 km storm-relative helicity: 331 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KBMX 181958
TORBMX
ALC119-182030-
/O.NEW.KBMX.TO.W.0138.071018T1958Z-071018T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
258 PM CDT THU OCT 18 2007

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL SUMTER COUNTY IN WEST CENTRAL ALABAMA...
  THIS INCLUDES THE CITY OF LIVINGSTON...

* UNTIL 330 PM CDT

* AT 256 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 7 MILES SOUTH OF
  LIVINGSTON...OR NEAR YORK...MOVING NORTHEAST AT 20 MPH.

* THE TORNADO WILL BE NEAR...
  LIVINGSTON BY 310 PM CDT...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT THURSDAY EVENING
FOR NORTHWESTERN ALABAMA.

TO REPORT SEVERE WEATHER...
CALL 1-800-856-0758.

LAT...LON 3270 8813 3254 8807 3243 8821 3253 8834
TIME...MOT...LOC 1958Z 228DEG 20KT 3252 8821

$$

KSL

The office that day

Everything else NWS Birmingham, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 18, 4:25 AM CDT	Lake Wind Advisory	BMX	Blount, Calhoun, Cherokee, Clay, Cleburne, Etowah and 12 more	15 hr
Oct 18, 1:09 PM CDT	Tornado Warning	BMX	Lamar	36 min
Oct 18, 1:38 PM CDT	Tornado Warning	BMX	Marion	52 min
Oct 18, 2:25 PM CDT	Tornado Warning	BMX	Marion, Winston	39 min
Oct 18, 2:31 PM CDT	Tornado Warning	BMX	Sumter	29 min
Oct 18, 3:16 PM CDT	Tornado Warning	BMX	Greene, Pickens, Sumter	44 min
Oct 18, 3:26 PM CDT	Tornado Warning	BMX	Greene, Sumter	34 min
Oct 18, 3:58 PM CDT	Tornado Warning	BMX	Greene, Pickens	32 min
Oct 18, 4:26 PM CDT	Tornado Warning	BMX	Greene	34 min
Oct 18, 4:50 PM CDT	Tornado Warning	BMX	Greene, Tuscaloosa	40 min
Oct 18, 5:23 PM CDT	Tornado Warning	BMX	Tuscaloosa	35 min

Nearby

Tornado Warnings in Alabama, 2007 Every tornado warning in 2007 Tornadoes in 2007

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.