Alert archive / Alabama / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 89, NWS Birmingham, AL

June 18, 1992Jackson County, Madison County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 18, 1992, 3:51 PM CDT for Jackson County, Madison County, Alabama. It was in force for 69 min.

The area

The counties it named.

The facts

Issued
Jun 18, 1992, 3:51 PM CDT (20:51 UTC)
Expired
Jun 18, 1992, 5:00 PM CDT
In force
69 min
Issued by
NWS Birmingham, AL
Area
Whole counties

Counties Jackson County, AL, Madison County, AL

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 8.9 hours before the alert went out and 154 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, Nashville Metro, TN at 12:00Z on 1992-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 957 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, Nashville Metro, TN at 12:00Z on 1992-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 269 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
957 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
578 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
269 m²/s²
0-3 km storm-relative helicity
295 m²/s²
Significant tornado parameter
1.1
Supercell composite
7.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KHSV 182054
SVRHSV
ALC071-089-182200-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
351 PM CDT THU JUN 18 1992
 
THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  500 PM CDT
 
 
IN NORTH ALABAMA
 
   ...JACKSON COUNTY...MADISON COUNTY
 
AT 350 PM CDT WEATHER RADAR AT HUNTSVILLE INDICATED A SEVERE
THUNDERSTORM OVER MADISON COUNTY NEAR THE BROWNSBORO AND MAYSVILLE
AREA. QUARTER SIZE HAIL WAS REPORTED WITH THIS STORM
 
THIS STORM WAS MOVING EAST AT 25 MILES AN HOUR AND WILL ENTER JACKSON
COUNTY SHORTLY.
 
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NIOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jun 18, 1:46 PM CDT, 2 hours 5 minutes before
ALZ004>006-008-182000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
145 PM CDT THU JUN 18 1992

...SEVERE THUNDERSTORM WATCH IN EFFECT FOR MUCH OF NORTH ALABAMA
UNTIL 7PM CDT...

AT 140 PM CDT...NATIONAL WEATHER SERVICE RADAR SHOWED A LINE OF SHOWERS
AND THUNDERSTORMS ACROSS NORTHWEST ALABAMA.  THIS LINE OF SHOWERS AND
THUNDERSTORMS WILL INTENSIFY AS IT MOVES TO THE EAST-SOUTHEAST AT
ABOUT 30 MPH.  THESE STORMS WILL MOVE INTO THE WEST CENTRAL ALABAMA
COUNTIES OF MARION...WINSTON AND CULLMAN BY 3 PM CDT.  THE STRONGER
STORMS WILL BE CAPABLE OF PRODUCING STRONG GUSTY WINDS...HEAVY RAIN....
DEADLY LIGHTNING...AND POSSIBLY HAIL.

ELSEWHERE...AN ISOLATED THUNDERSTORM HAD DE_VELOPED OVER PICKENS COUNTY
NEAR ALICEVILLE.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 1:53 PM CDTSevere Thunderstorm WarningBMXLimestone67 min
Jun 18, 4:25 PM CDTSevere Thunderstorm WarningBMXMorgan65 min
Jun 18, 4:31 PM CDTSevere Thunderstorm WarningBMXBlount, Cullman59 min
Jun 18, 6:06 PM CDTSevere Thunderstorm WarningBMXBlount, Jefferson69 min
Jun 18, 6:06 PM CDTSevere Thunderstorm WarningBMXCullman42 min
Jun 18, 6:16 PM CDTTornado WarningBMXBlount29 min
Jun 18, 6:24 PM CDTSevere Thunderstorm WarningBMXSt. Clair66 min
Jun 18, 6:28 PM CDTSevere Thunderstorm WarningBMXEtowah20 min
Jun 18, 6:28 PM CDTSevere Thunderstorm WarningBMXCalhoun62 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1992Every severe thunderstorm warning in 1992

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.