Alert archive / Alabama / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 52, NWS Mobile, AL

March 12, 2001Conecuh County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Mar 12, 2001, 6:35 AM CST for Conecuh County, Alabama. It was in force for 25 min. 1 report came from 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, with what was reported inside it.

The facts

Issued: Mar 12, 2001, 6:35 AM CST (12:35 UTC)
Expired: Mar 12, 2001, 7:00 AM CST
In force: 25 min
Issued by: NWS Mobile, AL
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Conecuh County, AL

What was reported inside it

Time	Report	Where	Remark
Mar 12, 6:45 AM CST	Hail 0.75	Owassa, AL

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 0.6 hours before the alert went out and 184 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: 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.

732 
WUUS54 KMOB 121235
SVRMOB
ALC035-121300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
635 AM CST MON MAR 12 2001

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 700 AM CST

* AT 635 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM FAIRNELSON TO 4 MILES EAST OF
  LENOX...MOVING EAST AT 40 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  CHINA...I65 AND US 84 BY 640 AM CST
  EVERGREEN...DEANS BY 645 AM CST
  BROWNVILLE...I65 AND CR 29 BY 650 AM CST
  WILCOX BY 655 AM CST

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

LAT...LON 3164 8711 3131 8723 3135 8675 3149 8680
          3158 8691 3172 8695

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 12, 1:58 AM CST	Severe Thunderstorm Warning	MOB	Mobile	32 min
Mar 12, 2:31 AM CST	Severe Thunderstorm Warning	MOB	Baldwin	44 min
Mar 12, 5:38 AM CST	Severe Thunderstorm Warning	MOB	Washington	37 min
Mar 12, 6:09 AM CST	Severe Thunderstorm Warning	MOB	Monroe	36 min
Mar 12, 6:16 AM CST	Severe Thunderstorm Warning	MOB	Clarke	29 min
Mar 12, 9:19 AM CST	Severe Thunderstorm Warning	MOB	Choctaw	26 min
Mar 12, 10:10 AM CST	Severe Thunderstorm Warning	MOB	Choctaw	50 min
Mar 12, 10:29 AM CST	Tornado Warning	MOB	Choctaw	31 min
Mar 12, 10:49 AM CST	Tornado Warning	MOB	Wilcox	26 min
Mar 12, 10:52 AM CST	Severe Thunderstorm Warning	MOB	Washington	33 min
Mar 12, 10:57 AM CST	Tornado Warning	MOB	Choctaw	18 min
Mar 12, 11:05 AM CST	Tornado Warning	MOB	Washington	10 min
Mar 12, 11:11 AM CST	Severe Thunderstorm Warning	MOB	Mobile	34 min
Mar 12, 11:27 AM CST	Severe Thunderstorm Warning	MOB	Baldwin	33 min
Mar 12, 11:40 AM CST	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Escambia, Monroe, Wilcox	65 min
Mar 12, 11:44 AM CST	Severe Thunderstorm Warning	MOB	Mobile	31 min
Mar 12, 12:08 PM CST	Flash Flood Warning	MOB	Mobile	2 hr
Mar 12, 12:26 PM CST	Severe Thunderstorm Warning	MOB	Mobile	34 min
Mar 12, 12:40 PM CST	Severe Thunderstorm Warning	MOB	Covington, Crenshaw	50 min
Mar 12, 12:47 PM CST	Severe Thunderstorm Warning	MOB	Escambia	13 min
Mar 12, 12:47 PM CST	Severe Thunderstorm Warning	MOB	Baldwin	43 min
Mar 12, 12:49 PM CST	Severe Thunderstorm Warning	MOB	Butler	41 min
Mar 12, 1:35 PM CST	Severe Thunderstorm Warning	MOB	Covington	10 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.