Alert archive / Alabama / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 115, NWS Mobile, AL

June 11, 2001Washington County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jun 11, 2001, 8:06 AM CDT for Washington County, Alabama. It was in force for 24 min. 1 report came from 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, with what was reported inside it.

The facts

Issued: Jun 11, 2001, 8:06 AM CDT (13:06 UTC)
Expired: Jun 11, 2001, 8:30 AM CDT
In force: 24 min
Issued by: NWS Mobile, AL
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Washington County, AL

What was reported inside it

Time	Report	Where	Remark
Jun 11, 8:10 AM CDT	Thunderstorm Wind 55 E	Deer Park, AL	Trees and power lines were blown down by high thunderstorm winds along U. S. Highway 45 south of Deer Park.

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
Jun 11, 7:45 AM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 1.1 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: 99 J/kg
Mixed-layer CIN: -100 J/kg
Mixed-layer LCL: 983 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: -62 m²/s²
0-3 km storm-relative helicity: -16 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KMOB 111306
SVRMOB
ALC129-111330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
806 AM CDT MON JUN 11 2001

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 830 AM CDT

* AT 806 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 9 MILES SOUTH OF DEER PARK...MOVING NORTH AT 35
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  DEER PARK BY 815 AM CDT
  VINEGAR BEND...ESCATAWPA BY 825 AM CDT
  TIBBIE...FRUITDALE BY 830 AM CDT

STRONG DAMAGING WIND...LARGE HAIL AND DEADLY LIGHTNING ARE LIKELY
WITH THIS STORM.  IF IN THE PATH OF THIS STORM...TAKE COVER IN A
STURDY SHELTER UNTIL THE STORM HAS PASSED.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH
LITTLE OR N4O ADVANCE WARNING.

LAT...LON 3113 8842 3117 8823 3148 8818 3148 8844

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 6:26 AM CDT	Severe Thunderstorm Warning	MOB	Mobile	64 min
Jun 11, 7:08 AM CDT	Tornado Warning	MOB	Mobile	37 min
Jun 11, 7:45 AM CDT	Tornado Warning	MOB	Mobile	30 min
Jun 11, 7:59 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin	61 min
Jun 11, 9:00 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Escambia	60 min
Jun 11, 9:59 AM CDT	Tornado Warning	MOB	Baldwin	31 min
Jun 11, 1:03 PM CDT	Flash Flood Warning	MOB	Baldwin	12 hr
Jun 11, 5:41 PM CDT	Tornado Warning	MOB	Covington	34 min
Jun 11, 6:16 PM CDT	Tornado Warning	MOB	Covington	14 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.