Alert archive / Alabama / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 198, NWS Mobile, AL

November 24, 2001Clarke County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Nov 24, 2001, 4:34 PM CST for Clarke County, Alabama. It was in force for 26 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: Nov 24, 2001, 4:34 PM CST (22:34 UTC)
Expired: Nov 24, 2001, 5:00 PM CST
In force: 26 min
Issued by: NWS Mobile, AL
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Clarke County, AL

The watch it was issued in

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

Issued	Product	Office	Lasted
Nov 24, 2:00 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.6 hours before the alert went out and 220 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: 1625 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 468 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 284 m²/s²
0-3 km storm-relative helicity: 362 m²/s²
Significant tornado parameter: 2.3
Supercell composite: 12.7

Open this sounding in Storm Lab

The text

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

391 
WUUS54 KMOB 242235
SVRMOB
ALC025-242300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
434 PM CST SAT NOV 24 2001

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CLARKE COUNTY IN SOUTHWEST ALABAMA

* UNTIL 500 PM CST

* AT 434 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 9 MILES WEST OF CARLTON...MOVING EAST NORTHEAST
  AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CARLTON BY 440 PM CST
  CHOCTAW BLUFF BY 450 PM CST
  GAINESTOWN...ALMA BY 455 PM CST

STRONG DAMAGING WIND...LARGE HAIL...AND HEAVY RAIN ARE LIKELY WITH
THIS STORM.  IF IN THE PATH OF THIS STORM...TAKE COVER IN A STURDY
SHELTER UNTIL THE STORM HAS PASSED.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH
LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT FOR RAPIDLY
CHANGING WEATHER CONDITIONS.

LAT...LON 3143 8792 3124 8793 3132 8777 3140 8771
          3153 8767

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 24, 10:57 AM CST	Tornado Warning	MOB	Choctaw	33 min
Nov 24, 11:40 AM CST	Tornado Warning	MOB	Choctaw	35 min
Nov 24, 12:31 PM CST	Tornado Warning	MOB	Choctaw	29 min
Nov 24, 12:52 PM CST	Tornado Warning	MOB	Choctaw, Washington	38 min
Nov 24, 1:30 PM CST	Tornado Warning	MOB	Choctaw, Clarke	45 min
Nov 24, 1:45 PM CST	Severe Thunderstorm Warning	MOB	Wilcox	30 min
Nov 24, 2:14 PM CST	Severe Thunderstorm Warning	MOB	Washington	61 min
Nov 24, 2:31 PM CST	Tornado Warning	MOB	Washington	59 min
Nov 24, 3:15 PM CST	Severe Thunderstorm Warning	MOB	Clarke	60 min
Nov 24, 3:32 PM CST	Severe Thunderstorm Warning	MOB	Washington	58 min
Nov 24, 3:56 PM CST	Severe Thunderstorm Warning	MOB	Conecuh	49 min
Nov 24, 4:27 PM CST	Severe Thunderstorm Warning	MOB	Washington	33 min
Nov 24, 4:30 PM CST	Severe Thunderstorm Warning	MOB	Butler	45 min
Nov 24, 4:40 PM CST	Tornado Warning	MOB	Butler, Conecuh	35 min
Nov 24, 5:07 PM CST	Severe Thunderstorm Warning	MOB	Conecuh, Monroe	38 min
Nov 24, 5:15 PM CST	Tornado Warning	MOB	Butler	30 min
Nov 24, 5:43 PM CST	Special Marine Warning	MOB		107 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2001 Every severe thunderstorm warning 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.