Alert archive / Alabama / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 83, NWS Mobile, AL

August 2, 1986Mobile County, Alabama; Jackson County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Aug 2, 1986, 3:30 PM CDT for Mobile County, Alabama; Jackson County, Mississippi. It was in force for 60 min.

The area

The counties it named.

The facts

Issued: Aug 2, 1986, 3:30 PM CDT (20:30 UTC)
Expired: Aug 2, 1986, 4:30 PM CDT
In force: 60 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, 8.5 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-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: 3693 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 998 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 63 m²/s²
0-3 km storm-relative helicity: 54 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 022030
SVRMOB
ALC053-003-097-MSC059-022130-

BULLETIN..IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MOBILE AL
330 PM CDT SAT AUG 2 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM AND
SPECIAL MARINE WARNING EFFECTIVE UNTIL 430 PM CDT FOR THE FOLLOWING
COUNTIES...INCLUDING THE ADJACENT COASTAL WATERS:
IN SOUTHWEST ALABAMA...MOBILE...BALDWIN...ESCAMBIA
IN SOUTHEAST MISSISSIPPI...JACSKON

AT 329 PM CDT RADAR AT MOBILE SHOWED A LINE OF SEVERE THUNDERSTORMS
EXTENDING FROM THE COASTAL WATERS OF JACKSON COUNTY MISSISSIPPI ACROSS
MOBILE AND BALDWIN COUNTIES TO NEAR ATMORE ALABAMA.

THIS LINE OF THUNDERSTORMS IS MOVING TO THE SOUTHEAST AT 30 MPH...AND IS
PRODUCING DAMAGING WINDS...HAIL...INTENSE LIGHTNING...AND VERY HEAY
RAINFALL.  PERSONS IN THE WARNED COUNTIES SHOULD BE PREPARED TO MOVE TO
A PLACE OF SAFETY AS THE STORMS APPROACH.

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, Aug 2, 12:52 PM CDT, 2 hours 38 minutes before

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
1234 PM CDT SAT AUG 2 1986

..A SEVERE THUNDERSTORM WATCH NUMBER 452 IS IN EFFECT UNTIL 700 PM CDT
FOR ESCAMBIA..SANTA ROSA..OKALOOSA COUNTIES IN FLORIDA..AND FOR THE
ADJOINING COASTAL WATERS.

AT 1230 PM CDT...A VERY HEAVY THUNDERSTORM WAS CENTERED 15 MILES WEST
OF THE PENSACOLA NAVAL AIR STATION..AND A HEAVY THUNDERSTORM WAS 10
MILES NORTHEAST OF APALACHICOLA.
VERY HEAVY THUNDERSTORMS WERE SCATTERED OVER SOUTHEAST MISSISSIPPI AND
WERE MOVING INTO CHOCTAW COUNTY ALABAMA.
THE HEAVIEST THUNDERSTORMS WERE NEAR LAUREL AND NEAR HATTIESBURG IN
MISSISSIPPI.
THE THUNDERSTORMS WERE MOVING SOUTHEAST AT 30 MILES AN HOUR.

THE HEAVIER THUNDERSTORMS WILL PRODUCE PERIODS OF HEAVY RAIN..FREQUENT
LIGHTNING STRIKES..STRONG GUSTY WIND..AND POSSIBLE HAIL.
PERSONS SHOULD WATCH FOR THREATENING WEATHER CONDITIONS AND BE PREPARED
TO TAKE ANY NECESSARY PRECAUTIONS.

Local storm report, Aug 2, 2:10 PM CDT, 1 hour 20 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENSACOLA FL
 210 PM CDT SAT AUG 2 1986

115PM-130PM..TIME APPROX..GOLF BALL SIZE HAIL WAS REPORTED EAST 9-MILE
ROAD (NORTH PENSACOLA) AND 1/2 INCH HAIL HIWAY 90..FOX-RUN AREA JUST
NORTHWEST OF PENSACOLA.
150 PM CDT..SKYWARN SPOTTERS REPORT MINOR FIRES STARTED BY LIGHTNING...
            (GRASS FIRE AT FERRY PASS...AND A PRIVACY FENCE IN NE PNS).
             ALSO MARBLE SIZE HAIL AT PNS AIRPORT.

J

                                                                            ]

Local storm report, Aug 2, 2:21 PM CDT, 1 hour 9 minutes before

ATTN SELS
STORM REPORTS
NATIONAL WEATHER SERVICE MOBILE AL
220 PM CDT SAT AUG 2 1986

THE MOBILE STATE TROOPERS OFFICE REPORTED HAIL MARBLE SIZE..VERY
STRONG WINDS AND RAIN SO HARD THAT THEY COULD NUOT SEE THE GROUND.
..OCCURRED AROUND 200 PM ON DAUPHIN ISLAND PARKWAY..ABOUT 10 MILES
SOUTHEAST OF THE MOBILE AIRPORT.

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 1:30 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	60 min
Aug 2, 1:30 PM CDT	Severe Thunderstorm Warning	MOB	Washington	60 min
Aug 2, 2:23 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	67 min
Aug 2, 2:50 PM CDT	Severe Thunderstorm Warning	MOB	Escambia	60 min
Aug 2, 3:30 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Escambia	60 min
Aug 2, 4:53 PM CDT	Severe Thunderstorm Warning	MOB	Covington	67 min
Aug 2, 12:58 PM CDT	Severe Thunderstorm Warning	MOB	Forrest, Perry, Stone	62 min
Aug 2, 2:23 PM CDT	Severe Thunderstorm Warning	MOB	Harrison, Jackson	67 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1986 Severe Thunderstorm Warnings in Mississippi, 1986 Every 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.