Alert archive / Alabama / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 82, NWS Mobile, AL

April 3, 2000Marengo County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Apr 3, 2000, 12:25 PM CDT for Marengo County, Alabama. It was in force for 35 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: Apr 3, 2000, 12:25 PM CDT (17:25 UTC)
Expired: Apr 3, 2000, 1:00 PM CDT
In force: 35 min
Issued by: NWS Mobile, AL
Area: Whole counties

County Marengo County, AL

The radar

The Birmingham radar (KBMX), 140 km from the middle of the area, began a volume at 17:25 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.

What was reported inside it

Time	Report	Where	Remark
Apr 3, 12:55 PM CDT	Hail 0.75	Demopolis, AL	Dime size hail was reported just north of Demopolis.

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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 3, 10:30 AM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 5.4 hours before the alert went out and 140 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: 162 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 777 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: 178 m²/s²
0-3 km storm-relative helicity: 188 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KMOB 031726
SVRMOB
ALC091-031800-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1225 PM CDT MON APR 3 2000

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MARENGO COUNTY IN ALABAMA

* UNTIL 100 PM CDT

* AT 1225 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 3 MILES NORTHWEST OF DEMOPOLIS...MOVING  EAST  
  AT 45 MPH.  THIS STORM WILL AFFECT EXTREME NORTHERN MARENGO COUNTY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT MONDAY AFTERNOON
FOR ALABAMA AND FLORIDA AND MISSISSIPPI.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN MOBILE.

LAT...LON 3259 8796 3242 8787 3272 8710 3292 8721

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 2, 9:59 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Marengo	61 min
Apr 2, 11:00 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Clarke, Marengo, Washington	60 min
Apr 2, 11:00 PM CDT	Severe Thunderstorm Warning	MOB	Wilcox	60 min
Apr 3, 12:11 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw	34 min
Apr 3, 12:21 PM CDT	Severe Thunderstorm Warning	MOB	Washington	54 min
Apr 3, 12:52 PM CDT	Severe Thunderstorm Warning	MOB	Marengo	38 min
Apr 3, 1:19 PM CDT	Severe Thunderstorm Warning	MOB	Clarke	41 min
Apr 3, 1:25 PM CDT	Severe Thunderstorm Warning	MOB	Washington	50 min
Apr 3, 1:47 PM CDT	Severe Thunderstorm Warning	MOB	Wilcox	28 min
Apr 3, 2:01 PM CDT	Severe Thunderstorm Warning	MOB	Clarke	29 min
Apr 3, 2:20 PM CDT	Tornado Warning	MOB	Clarke, Monroe	25 min
Apr 3, 2:46 PM CDT	Tornado Warning	MOB	Monroe	29 min
Apr 3, 3:12 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Monroe	33 min
Apr 3, 3:44 PM CDT	Severe Thunderstorm Warning	MOB	Butler	31 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; radar from the NEXRAD Level II archive.