Alert archive / Alabama / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 64, NWS Mobile, AL

March 12, 2001Mobile County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Mar 12, 2001, 12:26 PM CST for Mobile County, Alabama. It was in force for 34 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, 12:26 PM CST (18:26 UTC)
Expired
Mar 12, 2001, 1:00 PM CST
In force
34 min
Issued by
NWS Mobile, AL
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Mobile 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, 10:00 AM CSTTornado WatchSPC5 hr
Mar 12, 11:30 AM CSTTornado WatchSPC4 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 6.4 hours before the alert went out and 152 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, Slidell Radar S, LA at 12:00Z on 2001-03-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1587 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, Slidell Radar S, LA at 12:00Z on 2001-03-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 367 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
1587 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
469 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
367 m²/s²
0-3 km storm-relative helicity
453 m²/s²
Significant tornado parameter
4.1
Supercell composite
19.2

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KMOB 121827
SVRMOB
ALC097-121900-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1226 PM CST MON MAR 12 2001

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 100 PM CST

* AT 1226 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 10 MILES NORTHEAST OF COCHRANE
  BRIDGE TO 2 MILES SOUTHWEST OF ST ELMO...MOVING SOUTHEAST AT 15
  MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  DIXON CORNER BY 1230 PM CST
  HOLLINGERS ISLAND...LAURENDINE BY 1235 PM CST
  BAYOU LA BATRE...BELLEFONTAINE BY 1240 PM CST
  CODEN BY 1245 PM 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.

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 3100 8801 3066 8841 3039 8840 3024 8816
          3052 8806

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 12, 1:58 AM CSTSevere Thunderstorm WarningMOBMobile32 min
Mar 12, 2:31 AM CSTSevere Thunderstorm WarningMOBBaldwin44 min
Mar 12, 5:38 AM CSTSevere Thunderstorm WarningMOBWashington37 min
Mar 12, 6:09 AM CSTSevere Thunderstorm WarningMOBMonroe36 min
Mar 12, 6:16 AM CSTSevere Thunderstorm WarningMOBClarke29 min
Mar 12, 6:35 AM CSTSevere Thunderstorm WarningMOBConecuh25 min
Mar 12, 9:19 AM CSTSevere Thunderstorm WarningMOBChoctaw26 min
Mar 12, 10:10 AM CSTSevere Thunderstorm WarningMOBChoctaw50 min
Mar 12, 10:29 AM CSTTornado WarningMOBChoctaw31 min
Mar 12, 10:49 AM CSTTornado WarningMOBWilcox26 min
Mar 12, 10:52 AM CSTSevere Thunderstorm WarningMOBWashington33 min
Mar 12, 10:57 AM CSTTornado WarningMOBChoctaw18 min
Mar 12, 11:05 AM CSTTornado WarningMOBWashington10 min
Mar 12, 11:11 AM CSTSevere Thunderstorm WarningMOBMobile34 min
Mar 12, 11:27 AM CSTSevere Thunderstorm WarningMOBBaldwin33 min
Mar 12, 11:40 AM CSTSevere Thunderstorm WarningMOBButler, Conecuh, Escambia, Monroe, Wilcox65 min
Mar 12, 11:44 AM CSTSevere Thunderstorm WarningMOBMobile31 min
Mar 12, 12:08 PM CSTFlash Flood WarningMOBMobile2 hr
Mar 12, 12:40 PM CSTSevere Thunderstorm WarningMOBCovington, Crenshaw50 min
Mar 12, 12:47 PM CSTSevere Thunderstorm WarningMOBEscambia13 min
Mar 12, 12:47 PM CSTSevere Thunderstorm WarningMOBBaldwin43 min
Mar 12, 12:49 PM CSTSevere Thunderstorm WarningMOBButler41 min
Mar 12, 1:35 PM CSTSevere Thunderstorm WarningMOBCovington10 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2001Every 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.