Alert archive / Alabama / Tornado Warnings in 2001

Tornado Warning 22, NWS Birmingham, AL

March 12, 2001Autauga County, Elmore County, Montgomery County, Alabama

NWS Birmingham, AL issued this tornado warning at Mar 12, 2001, 12:01 PM CST for Autauga County, Elmore County, Montgomery County, Alabama. It was in force for 59 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Mar 12, 2001, 12:01 PM CST (18:01 UTC)
Expired
Mar 12, 2001, 1:00 PM CST
In force
59 min
Issued by
NWS Birmingham, AL
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Autauga County, AL, Elmore County, AL, Montgomery County, AL

The watch it was issued in

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

IssuedProductOfficeLasted
Mar 12, 11:30 AM CSTTornado WatchSPC4 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 6.0 hours before the alert went out and 91 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, Birmingham, AL at 12:00Z on 2001-03-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 18 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2001-03-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 129 square meters per square second.1939587897Sfc1 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
18 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
625 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
129 m²/s²
0-3 km storm-relative helicity
397 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KBMX 121801
TORBHM
ALC001-051-101-121900-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1201 PM CST MON MAR 12 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN AUTAUGA COUNTY IN ALABAMA
  ELMORE COUNTY IN ALABAMA
  NORTHERN MONTGOMERY COUNTY IN ALABAMA

* UNTIL 100 PM CST

* AT 1158 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO NEAR PRATTVILLE...MOVING NORTHEAST AT 40 MPH.

* LOCATIONS NEAR THE PATH OF THIS TORNADO INCLUDE...WETUMPKA...
PRATTVILLE...MILLBROOK...ECLECTIC...COOSADA AND BLUE RIDGE.

IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW. MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR. ABANDON MOBILE HOMES AND VEHICLES
FOR MORE SUBSTANTIAL SHELTER. AVOID WINDOWS.


LAT...LON 3245 8651 3232 8649 3242 8603 3274 8591

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 12, 10:49 AM CSTSevere Thunderstorm WarningBMXDallas41 min
Mar 12, 11:03 AM CSTTornado WarningBMXDallas27 min
Mar 12, 11:25 AM CSTTornado WarningBMXAutauga, Lowndes35 min
Mar 12, 11:48 AM CSTFlash Flood WarningBMXDallas117 min
Mar 12, 12:47 PM CSTFlash Flood WarningBMXAutauga, Elmore, Lowndes, Montgomery118 min

Nearby

Tornado Warnings in Alabama, 2001Every tornado warning in 2001Tornadoes in 2001

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.