Alert archive / Alabama / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 329, NWS Mobile, AL

November 9, 2000Washington County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Nov 9, 2000, 3:24 AM CST for Washington County, Alabama. It was in force for 36 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: Nov 9, 2000, 3:24 AM CST (09:24 UTC)
Expired: Nov 9, 2000, 4:00 AM CST
In force: 36 min
Issued by: NWS Mobile, AL
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Washington County, AL

The radar

The Mobile radar (KMOB), 90 km from the middle of the area, began a volume at 09:22 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
Nov 9, 12:00 AM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 9.4 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: 709 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 796 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 164 m²/s²
0-3 km storm-relative helicity: 185 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 4.4

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KMOB 090924
SVRMOB
ALC129-091000-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
324 AM CST THU NOV 9 2000

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 400 AM CST

* AT 324 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM MILLRY TO 16 MILES SOUTHWEST OF
  CHATOM...MOVING EAST AT 20 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  CHATOM BY 340 AM 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.

LAT...LON 3169 8844 3118 8843 3118 8809 3169 8811

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 9, 1:25 AM CST	Tornado Warning	MOB	Clarke, Wilcox	35 min
Nov 9, 2:52 AM CST	Severe Thunderstorm Warning	MOB	Escambia	23 min
Nov 9, 3:07 AM CST	Severe Thunderstorm Warning	MOB	Choctaw	23 min
Nov 9, 3:39 AM CST	Tornado Warning	MOB	Mobile	36 min
Nov 9, 4:33 AM CST	Severe Thunderstorm Warning	MOB	Clarke, Wilcox	42 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.