Alert archive / Alabama / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 121, NWS Mobile, AL

July 13, 1996Washington County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jul 13, 1996, 2:24 PM CDT for Washington County, Alabama. It was in force for 66 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: Jul 13, 1996, 2:24 PM CDT (19:24 UTC)
Expired: Jul 13, 1996, 3:30 PM CDT
In force: 66 min
Issued by: NWS Mobile, AL
Area: Whole counties

County Washington County, AL

The radar

The Mobile radar (KMOB), 81 km from the middle of the area, began a volume at 19:23 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 7.4 hours before the alert went out and 192 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: 1067 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 1198 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: -7 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMOB 131919
SVRMOB
ALC129-132030-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
224 PM CDT SAT JUL 13 1996
 
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  330 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST ALABAMA
 
   ...WASHINGTON COUNTY
 
AT 210 PM CDT MOBILE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM IN
NORTHWEST WASHINGTON COUNTY. THIS STORM WAS MOVING TO THE EAST AT 15
MPH. GUSTY WINDS...DEADLY LIGHTNING...VERY HEAVY RAINFALL AND POSSIBLE
HAIL CAN BE EXPECTED WITH THIS STORM. THIS STORM WILL AFFECT THE TOWNS
OF MILLRY...YARBO AND FRANKVILLE BY 230 PM.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

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.

NWS Mobile, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 13, 2:37 AM CDT, 11 hours 47 minutes earlier.

Area forecast discussion, Jul 13, 2:37 AM CDT, 11 hours 47 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MOBILE AL
235 AM SAT JUL 13 1996

ATMOS RETURNING TO MORE TYPICAL SUMMER PATTERN AS BERTHA MOVES UP
EAST COAST. SHUD BE AN ACTIVE DAY FOR SEA BRZ TSTMS AS 70H TROF THRU
MIDSECTION OF COUNTRY MOVS SE AND INTERACTS WITH SEA BRZ LATER TODAY.
FCST K INDX AND MRH ALSO LOOK FAVORABLE OVR FA TODAY. PCPN PRODUCTS
...BOTH AFOS AND GRIDDED DATA ALL SHOW ARND 1/2 INCH AMOUNTS...OF
COURSE XPCT MUCH MORE IN PLACES. MORE OF THE SAME ON SUN AS ETA SHOWS
A BIT STRONGER 50H TROF OVR FA BY THEN WITH SE FLOW IN LOWER LEVELS.
(1) 90/74/90/74 5352  (2) 90/75/90/74 4242  11

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 2:18 PM CDT	Severe Thunderstorm Warning	MOB	Clarke	57 min
Jul 13, 3:44 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw	61 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1996 Every severe thunderstorm warning in 1996

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.