Alert archive / Alabama / Tornado Warnings in 1999

Tornado Warning 45, NWS Mobile, AL

October 9, 1999Mobile County, Alabama

NWS Mobile, AL issued this tornado warning at Oct 9, 1999, 5:26 AM CDT for Mobile County, Alabama. It was in force for 64 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Oct 9, 1999, 5:26 AM CDT (10:26 UTC)
Expired
Oct 9, 1999, 6:30 AM CDT
In force
64 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Mobile County, AL

What was reported inside it

TimeReportWhereRemark
Oct 9, 5:45 AM CDTThunderstorm Wind 60Big Creek Lake, ALHigh winds blew several trees down near Big Creek Lake.

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 nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 10.4 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-pSkew-T log-p diagram, Slidell Radar S, LA at 00:00Z on 1999-10-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 87 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 1999-10-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 138 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
87 J/kg
Mixed-layer CIN
-113 J/kg
Mixed-layer LCL
851 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
138 m²/s²
0-3 km storm-relative helicity
169 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.

374 
WFUS54 KMOB 091029 RRA
TORMOB
ALC097-091130-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
526 AM CDT SAT OCT 9 1999

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 630 AM CDT

* AT 524 AM CDT... AS INDICATED BY DOPPLER RADAR A TORNADO WAS LOCATED
  19 MILES SOUTH OF CITRONELLE...OR JUST NORTHWEST OF SARALAND...
  MOVING NORTH AT 30 MPH. THIS IS AN EXTENSION OF THE TORNADO
  WARNING CURRENTLY IN EFFECT FOR MOBILE COUNTY.

* TORNADO WILL PASS NEAR-
  CITRONELLE BY 600 AM CDT

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.

IssuedProductOfficeCountiesLasted
Oct 9, 4:40 AM CDTTornado WarningMOBMobile50 min
Oct 9, 9:30 AM CDTSevere Thunderstorm WarningMOBClarke, Monroe, Wilcox75 min

Nearby

Tornado Warnings in Alabama, 1999Every tornado warning in 1999Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.