Alert archive / Alabama / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 40, NWS Mobile, AL

March 3, 2001Mobile County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Mar 3, 2001, 11:24 AM CST for Mobile County, Alabama. It was in force for 36 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: Mar 3, 2001, 11:24 AM CST (17:24 UTC)
Expired: Mar 3, 2001, 12:00 PM CST
In force: 36 min
Issued by: NWS Mobile, AL
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Mobile County, AL

The radar

The Mobile radar (KMOB), 7 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
Mar 3, 11:30 AM CST	Thunderstorm Wind 50 E	(Mob)Mobile Bates Fl, AL	High winds from a thunderstorm blew several trees down just south of the airport.

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
Mar 3, 9:45 AM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 5.4 hours before the alert went out and 141 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: 40 J/kg
Mixed-layer CIN: -187 J/kg
Mixed-layer LCL: 977 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 139 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

833 
WUUS54 KMOB 031726
SVRMOB
ALC097-031800-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1124 AM CST SAT MAR 3 2001

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL NOON CST

* AT 1124 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 4 MILES SOUTHWEST OF DEES...MOVING NORTHEAST AT
  55 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BIG CREEK LAKE DAM...DAWES BY 1130 AM CST
  AIRPORT AND UNIVERSITY...COTTAGE HILL PARK BY 1135 AM CST
  AIRPORT AND GOVERNMENT...CRICHTON BY 1140 AM CST
  DOWNTOWN MOBILE...CHICKASAW BY 1145 AM CST

THE MAIN THREAT FROM THIS STORM WILL BE STRONG DAMAGING WIND.  HEAVY 
RAIN WILL ALSO ACCOMPANY THE STORM.  IF IN THE PATH OF THIS 
STORM...TAKE COVER IN A STURDY SHELTER UNTIL THE STORM HAS PASSED.

LAT...LON 3059 8850 3044 8839 3068 8802 3096 8809

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 3, 1:11 AM CST	Flash Flood Warning	MOB	Choctaw, Clarke, Marengo, Washington	6 hr
Mar 3, 1:39 AM CST	Severe Thunderstorm Warning	MOB	Mobile, Washington	36 min
Mar 3, 1:55 AM CST	Severe Thunderstorm Warning	MOB	Baldwin, Clarke, Monroe	65 min
Mar 3, 2:45 AM CST	Severe Thunderstorm Warning	MOB	Conecuh	45 min
Mar 3, 3:09 AM CST	Severe Thunderstorm Warning	MOB	Butler	51 min
Mar 3, 7:15 AM CST	Flash Flood Warning	MOB	Choctaw, Clarke, Marengo, Washington	4 hr
Mar 3, 11:25 AM CST	Flash Flood Warning	MOB	Baldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 7 more	6 hr
Mar 3, 3:47 PM CST	Severe Thunderstorm Warning	MOB	Clarke, Washington	28 min
Mar 3, 5:15 PM CST	Flash Flood Warning	MOB	Baldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 7 more	6 hr

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; radar from the NEXRAD Level II archive.