Alert archive / Alabama / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 18, NWS Mobile, AL

March 12, 2002Baldwin County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Mar 12, 2002, 2:55 PM CST for Baldwin County, Alabama. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Mar 12, 2002, 2:55 PM CST (20:55 UTC)
Expired: Mar 12, 2002, 3:45 PM CST
In force: 50 min
Issued by: NWS Mobile, AL
Area: Counties, with a storm outline in the text

County Baldwin County, AL

The radar

The Mobile radar (KMOB), 51 km from the middle of the area, began a volume at 20:58 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 nearest sounding before it

Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 8.9 hours before the alert went out and 123 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: 261 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 449 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 123 m²/s²
0-3 km storm-relative helicity: 171 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KMOB 122055
SVRMOB
ALC003-122145-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
256 PM CST TUE MAR 12 2002

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 345 PM CST

* AT 256 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM I65 AND AL 225 TO 4 MILES SOUTH
  OF MALBIS...MOVING EAST AT 35 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  I65 AND AL 287...SILVERHILL BY 300 PM CST
  RABUN...ROSINTON BY 305 PM CST
  I65 AND CR 47...GATESWOOD BY 310 PM CST

REPORT SEVERE WEATHER TO YOUR LOCAL 911 EMERGENCY CENTER OR LAW
ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL
WEATHER SERVICE FORECAST OFFICE IN MOBILE.

LAT...LON 3102 8795 3051 8790 3054 8756 3066 8745
          3087 8764 3105 8765

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 12, 10:09 AM CST	Special Marine Warning	MOB		2 hr
Mar 12, 10:09 AM CST	Special Marine Warning	MOB		2 hr
Mar 12, 11:55 AM CST	Severe Thunderstorm Warning	MOB	Covington	35 min
Mar 12, 12:03 PM CST	Severe Thunderstorm Warning	MOB	Crenshaw	27 min
Mar 12, 12:42 PM CST	Severe Thunderstorm Warning	MOB	Covington	18 min
Mar 12, 1:37 PM CST	Special Marine Warning	MOB		23 min
Mar 12, 1:57 PM CST	Severe Thunderstorm Warning	MOB	Mobile	48 min
Mar 12, 2:22 PM CST	Special Marine Warning	MOB		68 min
Mar 12, 2:30 PM CST	Severe Thunderstorm Warning	MOB	Baldwin	30 min
Mar 12, 3:52 PM CST	Special Marine Warning	MOB		113 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2002 Every severe thunderstorm warning in 2002

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.