Alert archive / Alabama / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 50, NWS Mobile, AL

March 12, 2001Monroe County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Mar 12, 2001, 6:09 AM CST for Monroe County, Alabama. It was in force for 36 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, 6:09 AM CST (12:09 UTC)
Expired: Mar 12, 2001, 6:45 AM CST
In force: 36 min
Issued by: NWS Mobile, AL
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Monroe County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 0.2 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.

429 
WUUS54 KMOB 121209
SVRMOB
ALC099-121245-

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

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 645 AM CST

* AT 609 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 2 MILES NORTHEAST OF MANISTEE...MOVING
  NORTHEAST AT 60 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  KEITH...PETERMAN BY 615 AM CST
  RIVER RIDGE...TUNNEL SPRINGS BY 620 AM CST
  BEATRICE...BUENA VISTA BY 625 AM CST
  CHESTNUT...MIDWAY BY 630 AM 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.

LAT...LON 3150 8758 3138 8743 3178 8697 3183 8723

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, 6:16 AM CST	Severe Thunderstorm Warning	MOB	Clarke	29 min
Mar 12, 6:35 AM CST	Severe Thunderstorm Warning	MOB	Conecuh	25 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; the sounding from the Mesonet's radiosonde archive.