Alert archive / Alabama / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 346, NWS Birmingham, AL

July 13, 1995Jefferson County, Shelby County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jul 13, 1995, 5:44 PM CDT for Jefferson County, Shelby County, Alabama. It was in force for 31 min.

The area

The counties it named.

The facts

Issued
Jul 13, 1995, 5:44 PM CDT (22:44 UTC)
Expired
Jul 13, 1995, 6:15 PM CDT
In force
31 min
Issued by
NWS Birmingham, AL
Area
Whole counties

Counties Jefferson County, AL, Shelby County, AL

The radar

The Birmingham radar (KBMX), 26 km from the middle of the area, began a volume at 22:48 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

Birmingham, AL (KBMX), launched 12:00Z, 10.7 hours before the alert went out and 25 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, Birmingham, AL at 12:00Z on 1995-07-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1101 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, Birmingham, AL at 12:00Z on 1995-07-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -20 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
1101 J/kg
Mixed-layer CIN
-81 J/kg
Mixed-layer LCL
1171 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-20 m²/s²
0-3 km storm-relative helicity
34 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBHM 132244 RRA
SVRBHM
ALC073-117-132315-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
544 PM CDT THU JUL 13 1995
 
THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  615 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL ALABAMA
 
   ...SOUTHERN JEFFERSON COUNTY...WESTERN SHELBY COUNTY
 
AT 544 PM...WEATHER SERVICE RADAR SHOWED A SEVERE THUNDERSTORM ALONG THE
JEFFERSON/SHELBY COUNTY LINE JUST SOUTHWEST OF HOOVER. THIS STORM WAS
MOVING WEST-SOUTHWEST AT 15 MPH...AND WILL BE AFFECTING THE HELENA AND
BESSEMER AREAS THROUGH 615 PM.
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT 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.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 12, 7:12 PM CDTSevere Thunderstorm WarningBMXMarengo33 min
Jul 12, 9:03 PM CDTSevere Thunderstorm WarningBMXSumter27 min
Jul 13, 4:54 PM CDTSevere Thunderstorm WarningBMXJefferson, Shelby36 min
Jul 13, 5:12 PM CDTSevere Thunderstorm WarningBMXHale, Perry33 min
Jul 13, 5:42 PM CDTSevere Thunderstorm WarningBMXGreene, Tuscaloosa33 min
Jul 13, 5:59 PM CDTSevere Thunderstorm WarningBMXPickens31 min
Jul 13, 6:16 PM CDTSevere Thunderstorm WarningBMXFayette, Tuscaloosa29 min
Jul 13, 6:27 PM CDTSevere Thunderstorm WarningBMXGreene33 min
Jul 13, 6:30 PM CDTSevere Thunderstorm WarningBMXPickens30 min
Jul 13, 6:53 PM CDTSevere Thunderstorm WarningBMXFayette37 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1995Every severe thunderstorm warning in 1995

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.