Alert archive / Alabama / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 55, NWS Mobile, AL

July 28, 1986Clarke County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jul 28, 1986, 5:25 PM CDT for Clarke County, Alabama. It was in force for 35 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jul 28, 1986, 5:25 PM CDT (22:25 UTC)
Expired
Jul 28, 1986, 6:00 PM CDT
In force
35 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Clarke County, AL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
Jul 28, 5:38 PM CDTThunderstorm Wind 0Clarke, AL
Jul 28, 5:55 PM CDTThunderstorm Wind 0Clarke, AL

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 12:00Z, 10.4 hours before the alert went out and 148 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, Centreville/Bibb, AL at 12:00Z on 1986-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1180 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, Centreville/Bibb, AL at 12:00Z on 1986-07-28The 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
1180 J/kg
Mixed-layer CIN
-71 J/kg
Mixed-layer LCL
1110 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 282223
SVRMOB
ALC025-282300-

BULLETIN..IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
525 PM CDT MON JUL 28 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 600 PM CDT FOR THE FOLLOWING COUNTY IN SOUTHWEST
ALABAMA:

CLARKE

AT 522 PM CDT RADAR SHOWED A LINE OF SEVERE THUNDERSTORMS EXTENDING FROM
JUST WEST OF MONROEVILLE TO JUST NORTH OF GROVE HILL INTO THE NORTHWESTy
CORNER OF CLARKE COUNTY.  THESE STORMS ARE MOVING TO THE SOUTHWEST AT
20 MPH.

THESE STORMS MAY PRODUCE DAMAGING WINDS AND FREQUENT LIGHTNING AS THEY
MOVE ACROSS CLARKE COUNTY.

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, Jul 28, 4:20 PM CDT, 1 hour 5 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
420 PM CDT MON JUL 28 1986

...VERY HEAVY THUNDERSTORMS ARE BEGINNING TO MOVE INTO
   SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA...

AT 415 PM CDT THE MOBILE RADAR SHOWED VERY HEAVY THUNDERSTORMS EXTENDING
FROM 25 MILES NORTH OF LEAKESVILLE MISSISSIPPI TO 15 MILES NORTH OF
HATTIESBURG.  OTHER VERY HEAVY THUNDERSTORMS EXTENDED FROM NEAR DEMOPOLIS
ALABAMA TO 30 MILES NORTHEAST OF MONROEVILLE.  ALL OF THESE VERY HEAVY
THUNDERSTORMS ARE MOVING TO THE SOUTHWEST AT 15 TO 20 MPH. DAMAGING WINDS,
FREQUENT LIGHTNING, HAIL, AND VERY HEAVY RAINFALL MAY ACCOMPANY THESE
STORMS AS THEY MOVE INTO SOUTHWEST ALABAMA AND SOUTHEAST MISSISSI#PPI
DURING THE NEXT HOUR.

STAY TUNED TO NOAA WEATHER RADIO, COMMERCIAL RADIO, OR TELEVISION
FOR LATER STATEMENTS AND POSSIBLY WARNINGS.
Special weather statement, Jul 28, 4:52 PM CDT, 33 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
530 PM CDT MON JUL 28 1986

A CLUSTER OF HEAVY THUNDERSTORMS WAS OVER SOUTHEASTERN BAY COUNTY
FLORIDA. THEE STORMS WERE DRIFTING TO THE SOUTHWEST TOWARD PANAMA CITY
AND THE BEACHES. THESE STORMS WILL PRODUCE FREQUENT LIGHTNING STRIKES,
VERY GUSTY, SHIFTING WINDS, AND BRIEFLY HEAVY DOWNPOURS OF RAIN,
LIMITING VISIBILITY FOR VEHICLE OPERATION.

LIGHT RAIN EXTENDED NDORTHWARD FROM THE PANAMA CITY AREA TO THE STATE
LINE. SCATTERED THUNDERSTORMS WERE ALSO OVER THE INTERIORS OF SOUTHEAST
ALABAMA AND SOUTHWEST CENTRAL ALABAMA.

MOVEMENTS WERE TO THE SOUTHEAST AT NEAR 10 MPH.
Special weather statement, Jul 28, 4:56 PM CDT, 29 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY ...CORRECTIONS...
NATIONAL WEATHER SERVICE PENSACOLA FL
530 PM CDT MON JUL 28 1986

A CLUSTER OF HEAVY THUNDERSTORMS WAS OVER SOUTHEASTERN BAY COUNTY
FLORIDA. THEE STORMS WERE DRIFTING TO THE SOUTHWEST TOWARD PANAMA CITY
AND THE BEACHES. THESE STORMS WILL PRODUCE FREQUENT LIGHTNING STRIKES,
VERY GUSTY, SHIFTING WINDS, AND BRIEFLY HEAVY DOWNPOURS OF RAIN,
LIMITING VISIBILITY FOR VEHICLE OPERATION.
E
LIGHT RAIN EXTENDED NORTHWARD FROM THE PANAMA CITY AREA TO THE STATE
LINE. SCATTERED THUNDERSTORMS WERE ALSO OVER THE INTERIORS OF SOUTHEAST
ALABAMA AND SOUTHWEST CENTRAL ALABAMA.

MOVEMENTS WERE TO THE SOUTHWEST AT NEAR 10 MPH.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 28, 4:40 PM CDTSevere Thunderstorm WarningMOBMonroe50 min
Jul 28, 6:05 PM CDTSevere Thunderstorm WarningMOBBaldwin, Clarke, Monroe, Washington40 min
Jul 28, 6:43 PM CDTSevere Thunderstorm WarningMOBBaldwin, Mobile, Washington47 min

Nearby

Severe Thunderstorm Warnings in Alabama, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.