Alert archive / Alabama / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 311, NWS Mobile, AL

August 31, 2000Washington County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Aug 31, 2000, 6:17 PM CDT for Washington County, Alabama. It was in force for 28 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Aug 31, 2000, 6:17 PM CDT (23:17 UTC)
Expired: Aug 31, 2000, 6:45 PM CDT
In force: 28 min
Issued by: NWS Mobile, AL
Area: Whole counties

County Washington County, AL

What was reported inside it

Time	Report	Where	Remark
Aug 31, 6:35 PM CDT	Hail 0.75	Wagarville, AL	Residents reported dime sized hail in association with a thunderstorm.

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

Slidell Radar S, LA (KSIL), launched 12:00Z, 11.3 hours before the alert went out and 192 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: 1374 J/kg
Mixed-layer CIN: -157 J/kg
Mixed-layer LCL: 1340 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: -70 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -1.1

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KMOB 312317
SVRMOB
ALC129-312345-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
617 PM CDT THU AUG 31 2000

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 645 PM CDT

* AT 617 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A SEVERE THUNDERSTORM 6 MILES NORTH OF MCINTOSH...MOVING SOUTHEAST 
  AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
   MCINTOSH BY 635 PM CDT

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE
FOR DAMAGING WINDS IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY
LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY
INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 31, 3:51 PM CDT	Severe Thunderstorm Warning	MOB	Monroe	39 min
Aug 31, 5:53 PM CDT	Severe Thunderstorm Warning	MOB	Washington	22 min
Aug 31, 6:05 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin	25 min
Aug 31, 6:53 PM CDT	Severe Thunderstorm Warning	MOB	Washington	22 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2000 Every severe thunderstorm warning in 2000

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.