Alert archive / Alabama / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 13, NWS Mobile, AL

March 20, 1989Montgomery County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Mar 20, 1989, 8:16 PM CST for Montgomery County, Alabama. It was in force for 59 min.

The area

The counties it named.

The facts

Issued
Mar 20, 1989, 8:16 PM CST (02:16 UTC)
Expired
Mar 20, 1989, 9:15 PM CST
In force
59 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Montgomery County, AL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 00:00Z, 2.3 hours before the alert went out and 120 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, Centreville/Bibb, AL at 00:00Z on 1989-03-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 298 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, Centreville/Bibb, AL at 00:00Z on 1989-03-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 181 square meters per square second.19395878Sfc1 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
298 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
1556 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
181 m²/s²
0-3 km storm-relative helicity
229 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMGM 210219
SVRMGM
ALC101-210315-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MONTGOMERY AL
816 PM CST MON MAR 20 1989
 
THE NATIONAL WEATHER SERVICE IN MONTGOMERY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  915 PM CST
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTH ALABAMA
          ...MONTGOMERY
 
AT 816 PM RADAR SHOWED A SEVERE TUNDERSTORM 7 MILES SOUTHWEST OF
DANNELLY FIELD MOVING NORTHEAST AT 40 MPH. THERE WERE STRONG
INDICATIONS OF HAIL IN THE STORM.
 
 
 
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 20, 6:36 PM CSTSevere Thunderstorm WarningMOBDallas69 min
Mar 20, 7:34 PM CSTSevere Thunderstorm WarningMOBCoosa56 min
Mar 20, 7:34 PM CSTSevere Thunderstorm WarningMOBAutauga56 min
Mar 20, 9:18 PM CSTSevere Thunderstorm WarningMOBCovington57 min
Mar 21, 4:20 AM CSTSevere Thunderstorm WarningMOBMobile40 min
Mar 21, 5:11 AM CSTSevere Thunderstorm WarningMOBElmore64 min
Mar 21, 6:35 AM CSTSevere Thunderstorm WarningMOBBarbour, Pike55 min
Mar 21, 7:37 AM CSTSevere Thunderstorm WarningMOBBarbour68 min
Mar 21, 8:04 AM CSTSevere Thunderstorm WarningMOBHenry, Houston56 min
Mar 21, 8:24 AM CSTTornado WarningMOBDale42 min
Mar 21, 9:15 AM CSTSevere Thunderstorm WarningMOBHouston50 min
Mar 21, 10:48 AM CSTSevere Thunderstorm WarningMOBMobile42 min
Mar 21, 1:45 PM CSTSevere Thunderstorm WarningMOBMobile45 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1989Every severe thunderstorm warning in 1989

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.