Alert archive / Alabama / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 73, NWS Mobile, AL

March 31, 2005Choctaw County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Mar 31, 2005, 2:58 AM CST for Choctaw County, Alabama. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Mar 31, 2005, 2:58 AM CST (08:58 UTC)
Expired: Mar 31, 2005, 3:45 AM CST
In force: 47 min
Issued by: NWS Mobile, AL
Area: Counties, with a storm outline in the text

County Choctaw County, AL

The radar

The Mobile radar (KMOB), 156 km from the middle of the area, began a volume at 09:00 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

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

Issued	Product	Office	Lasted
Mar 31, 1:15 AM CST	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 9.0 hours before the alert went out and 173 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: 889 J/kg
Mixed-layer CIN: -97 J/kg
Mixed-layer LCL: 827 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 162 m²/s²
0-3 km storm-relative helicity: 260 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 8.4

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KMOB 310858
SVRMOB
ALC023-310945-
/O.NEW.KMOB.SV.W.0073.050331T0858Z-050331T0945Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
258 AM CST THU MAR 31 2005

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  CHOCTAW COUNTY IN SOUTHWEST ALABAMA

* UNTIL 345 AM CST

* AT 251 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  NEEDHAM...OR ABOUT 15 MILES SOUTHWEST OF BUTLER...AND MOVING
  NORTHEAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BUTLER BY 310 AM CST
  MT STERLING BY 315 AM CST
  LAVACA BY 320 AM CST
  CHOCTAW CITY AND DEAS BY 325 AM CST

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE FOR
DAMAGING WINDS...LARGE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING.
TAKE COVER IN A STURDY SHELTER UNTIL THE STORM HAS PASSED.

LAT...LON 3200 8850 3187 8836 3220 8789 3236 8807

$$

1 follow-up statement

000 
WWUS54 KMOB 310918
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
314 AM CST THU MAR 31 2005

ALC023-310945-
/O.CON.KMOB.SV.W.0073.000000T0000Z-050331T0945Z/
CHOCTAW AL-
314 AM CST THU MAR 31 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 345 AM CST FOR
NORTHERN CHOCTAW COUNTY...

AT 308 AM CST...TRAINED WEATHER SPOTTERS REPORTED A SEVERE 
THUNDERSTORM PRODUCING LARGE DAMAGING HAIL UP TO GOLF BALL SIZE JUST 
TO THE SOUTH OF BUTLER.  THE STORM IS MOVING NORTHEAST AT 40 MPH.   

HIS STORM IS NOW LOCATED NEAR MT 
STERLING...OR ABOUT NEAR BUTLER...MOVING NORTHEAST AT 40 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  MT STERLING BY 320 AM CST
  LAVACA BY 325 AM CST
  
THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS

LAT...LON 3200 8850 3187 8836 3220 8789 3236 8807

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 30, 7:21 PM CST	Severe Thunderstorm Warning	MOB	Choctaw	25 min
Mar 30, 7:56 PM CST	Severe Thunderstorm Warning	MOB	Washington	34 min
Mar 30, 8:24 PM CST	Severe Thunderstorm Warning	MOB	Choctaw, Clarke, Monroe, Washington, Wilcox	36 min
Mar 30, 8:58 PM CST	Severe Thunderstorm Warning	MOB	Clarke, Monroe, Wilcox	32 min
Mar 30, 9:29 PM CST	Severe Thunderstorm Warning	MOB	Wilcox	31 min
Mar 31, 2:22 AM CST	Severe Thunderstorm Warning	MOB	Choctaw	23 min
Mar 31, 7:26 AM CST	Flash Flood Warning	MOB	Choctaw	94 min
Mar 31, 7:48 AM CST	Flash Flood Warning	MOB	Clarke, Washington, Wilcox	117 min
Mar 31, 11:21 AM CST	Special Marine Warning	MOB		24 min
Mar 31, 11:50 AM CST	Special Marine Warning	MOB		25 min
Mar 31, 2:17 PM CST	Special Marine Warning	MOB		58 min
Mar 31, 2:36 PM CST	Severe Thunderstorm Warning	MOB	Baldwin	24 min
Mar 31, 3:13 PM CST	Special Marine Warning	MOB		17 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2005 Every severe thunderstorm warning in 2005

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; radar from the NEXRAD Level II archive.