Alert archive / Alabama / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 98, NWS Mobile, AL

November 25, 1986Mobile County, Alabama; Jackson County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Nov 25, 1986, 11:56 AM CST for Mobile County, Alabama; Jackson County, Mississippi. It was in force for 64 min.

The area

The counties it named.

The facts

Issued
Nov 25, 1986, 11:56 AM CST (17:56 UTC)
Expired
Nov 25, 1986, 1:00 PM CST
In force
64 min
Issued by
NWS Mobile, AL
Area
Whole counties

Counties Mobile County, AL, Jackson County, MS

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

Boothville, LA (KBVE), launched 12:00Z, 5.9 hours before the alert went out and 168 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, Boothville, LA at 12:00Z on 1986-11-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1207 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, Boothville, LA at 12:00Z on 1986-11-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939Sfc1 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
1207 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
688 m above ground
0-6 km bulk shear
0 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
0 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 251756
SVRMOB
MSC059-ALC097-251900-

BULLETIN..IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1156 AM CST TUE NOV 25 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 100 PM CST FOR THE FOLLOWING COUNTIES...

IN ALABAMA...MOBILE

AND IN MISSISSIPPI...JACKSON

INCLUDING THE ADJACENT COASTAL WATERS OF THESE COUNTIES.

AT 1155 AM CST NATIONAL WEATHER SERVICE RADAR IN MOBILE SOWED A LINE
OF SEVERE THUNDERSTORMS EXTENDING FROM 10 MILES NORTH OF PASCAGOULA
INTO THE GULF 40 MILES SOUTH OF PASCAGOULA. THESE STORMS ARE MOVING
NORTHEASTWARD AT 40 MPH AND WILL LIKELY PRODUCE DAMAGING WINDS...
YINTENSE RAIN...AND FREQUENT LIGHTNING.

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, Nov 25, 11:23 AM CST, 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1110 AM CST TUE NOV 25 1986

...TORNADO WATCH REMAINS IN EFFECT UNTIL 200 PM CST FOR MUCH OF
SOUTHEAST MISSISSIPPI AND PORTIONS OF SOUTHWEST ALABAMA...

AT 1110 AM CST THE MOBILE RADAR SHOWED A NEARLY SOLID BANDE OF SHOWERS
SHOWERS AND THUNDERSTORMS EXTENDING FROM NEAR LAUREL MISSISSIPPI TO
BILOXI TO 120 MILES SOUTH OF BILOXI.  THE MOST INTENSE OF THESE STORMS
WILL PRODUCE VERY HEAVY RAINFALL...VERY STRONG WINDS...DANGEROUS
LIGHTNING...AND POSSIBLY HAIL.  AS OF 1110 AM THE MOST INTENSE STORMS
WERE LOCATED IN MISSISSIPPI...JUST NORTH OF RICHTON...15 MILES SOUTHWEST
OF LUCEDALE...NORTH OF BILOXI...AND IN THE COASTAL WATERS NEAR THE
CHANDELEUR ISLANDS.
KEESLER AIR FOCE BASE IN BILOXI MEASURED WIND GUSTS TO 48 MPH AS THE
THUNDERSTORMS MOVED INTO THEIR AREA DURING THE LAST HOUR.

THE STORMS ARE MOVING TO THE NORTHEAST AT 35 MPH.
STAY TUNED TO NOAA WEATHER RADIO FOR# THE LATEST WEATHER BULLETINS.

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 24, 10:30 PM CSTSevere Thunderstorm WarningMOBHancock60 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1986Severe Thunderstorm Warnings in Mississippi, 1986Every severe thunderstorm warning in 1986

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.