Alert archive / Alabama / Tornado Warnings in 1999

Tornado Warning 22, NWS Mobile, AL

March 13, 1999Mobile County, Alabama

NWS Mobile, AL issued this tornado warning at Mar 13, 1999, 5:43 PM CST for Mobile County, Alabama. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Mar 13, 1999, 5:43 PM CST (23:43 UTC)
Expired: Mar 13, 1999, 6:15 PM CST
In force: 32 min
Issued by: NWS Mobile, AL
Area: Whole counties

County Mobile County, AL

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 13, 4:00 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 11.7 hours before the alert went out and 152 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: 553 J/kg
Mixed-layer CIN: -85 J/kg
Mixed-layer LCL: 514 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 406 m²/s²
0-3 km storm-relative helicity: 553 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMOB 132343 RRA
TORMOB
ALC097-140015-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
543 PM CST SAT MAR 13 1999

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN MOBILE COUNTY IN SOUTHWESTERN ALABAMA

* UNTIL 615 PM CST

* AT 539 PM CST... AS INDICATED BY DOPPLER RADAR A TORNADO WAS LOCATED
  OFFSHORE 15 MILES SOUTHWEST OF BAYOU LA BATRE... MOVING NORTHEAST AT
  45 MPH.

* TORNADO WILL PASS NEAR-
  BAYOU LA BATRE BY 555 PM CST
  DIXON CORNER BY 555 PM CST
  IRVINGTON BY 600 PM CST

IF YOU ARE IN THE PATH OF A TORNADO...SEEK SAFETY IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS...OR
CUSHIONS 
TO COVER YOUR BODY. STAY AWAY FROM WINDOWS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 13, 2:50 PM CST	Severe Thunderstorm Warning	MOB	Choctaw	40 min
Mar 13, 2:55 PM CST	Severe Thunderstorm Warning	MOB	Washington	65 min
Mar 13, 4:35 PM CST	Severe Thunderstorm Warning	MOB	Washington	55 min
Mar 13, 4:50 PM CST	Severe Thunderstorm Warning	MOB	Clarke	55 min

Nearby

Tornado Warnings in Alabama, 1999 Every tornado warning in 1999 Tornadoes in 1999

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.