Alert archive / Alabama / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 113, NWS Birmingham, AL

August 16, 1986Limestone County, Madison County, Morgan County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Aug 16, 1986, 2:54 PM CDT for Limestone County, Madison County, Morgan County, Alabama. It was in force for 66 min. 3 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
Aug 16, 1986, 2:54 PM CDT (19:54 UTC)
Expired
Aug 16, 1986, 4:00 PM CDT
In force
66 min
Issued by
NWS Birmingham, AL
Area
Whole counties

Counties Limestone County, AL, Madison County, AL, Morgan 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
Aug 16, 3:30 PM CDTThunderstorm Wind 0Limestone, AL
Aug 16, 3:30 PM CDTThunderstorm Wind 0Madison, AL
Aug 16, 3:30 PM CDTThunderstorm Wind 0Morgan, 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

Nashville Metro, TN (KBNA), launched 12:00Z, 7.9 hours before the alert went out and 163 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, Nashville Metro, TN at 12:00Z on 1986-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4010 joules per kilogram.LCLEL10008507005003002001001 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, Nashville Metro, TN at 12:00Z on 1986-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 square meters per square second.193958Sfc1 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
4010 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
813 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
39 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
TTAAOO KHSV 161954
SVRHSV
ALC083-089-103-162100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
254 PM CDT SAT AUG 16 1986
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL  400 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES:
 
IN NORTH ALABAMA
          ..LIMESTONE..MADISON..MORGAN

AT 253PM CDT HUNTSVILLE RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS MOVING THROUGH EAST LIMESTONE WEST MADISON AND
CENTRAL MORGAN COUNTIES AT 30 MPH.
 
THE SEVER THUNDERSTORM WARNING FOR MORGAN AND MADISON IS EXTENED
UNTIL 4PM CDT AND A NEW WARNING IS ISSUED FOR LIMESTONE COUNTY
 
IF YOU ARE CAUGHT OUTSIDE, SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND, LARGE HAIL, VERY HEAVY RAIN, AND
DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.  STAY
INSIDE AWAY FROM WINDOWS UNTILA THE STORM HAS PASSED.

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 16, 1:40 PM CDT, 1 hour 14 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
138 PM CDT SUN AUG 16 1986

A LINE OF STRONG THUNDERSTORMS WAS MOVING ACROSS NORTHWEST ALABAMA
EARLY IN THE AFTERNOON.

AT 135PM CDT...THE LINE OF THUNDERSTORMS WAS LOCATED FROM REFORM IN
PICKENS COUNTY, TO WINFIELD AND HACKLEBURG IN MARION COUNTY, THEN
INTO THE NORTHWEST PORTION OF THE STATE. THIS LINE OF THUNDERSTORMS
WAS MOVING TO THE EAST AT 25 TO 30 AND IS EXPECTED TO MOVE THROUGH
PICKENS, LAMAR, MARION AND FAYETTE COUNTIES...THEN INTO TUSCALOOSA,
WALKER AND WINSTON COUNTIES BY 2 PM CDT.

STRONG GUSTY WINDS, BRIEF BUT TORRENTIAL RAIN, AND FREQUENT LIGHTNING
WILL ACCOMPANY THESE STORMS.

WIND GUSTS TO 48 MPH WERE RECdORDED AT COLUMBUS MS. AND 42 MPH AT
TUPELO MS. AS THIS LINE OF THUNDERSTORMS MOVED THROUGH MISSISSIPPI
SHORTLY AFTER NOON.
Special weather statement, Aug 16, 2:48 PM CDT, 6 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MONTGOMERY AL
245 PM CDT SAT AUG 16 1986

AT 240 PM CDT
WEATHER RADAR AT MONTGOMERY SHOWED A SHORT INTENSE LINE OF THUNDER
STORMS EXTENDING FROM CENTREVILLE TO NEAR CAMDEN IN WEST CENTRAL
ALABAMA. THIS LINE OF THUNDERSTORMS WAS MOVING EAST AT 20 MILES AN
HOUR AND WILL PASS OVER SELMA VERY SHORTLY.

THESE INTENSE THUNDERSTORMS WILL BE ACCOMPANIED BY HEAVY RAINS AND VERY
DANGEROUS LIGHTNING. T,HE THUNDERSTORMS ALSO HAVE THE POTENTIAL FOR
STRONG GUSTY WINDS AND SMALL HAIL. PEOPLE IN CENTRAL ALABAMA SHOULD
BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS THROUGHOUT THE
REMAINDER OF THIS AFTERNOON AND EVENING.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 16, 2:00 PM CDTSevere Thunderstorm WarningBMXMadison60 min
Aug 16, 2:25 PM CDTSevere Thunderstorm WarningBMXMorgan35 min
Aug 16, 2:25 PM CDTSevere Thunderstorm WarningBMXWalker, Winston35 min
Aug 16, 2:50 PM CDTSevere Thunderstorm WarningBMXJefferson40 min
Aug 16, 2:50 PM CDTSevere Thunderstorm WarningBMXCullman40 min
Aug 16, 3:15 PM CDTSevere Thunderstorm WarningBMXBlount30 min
Aug 16, 3:30 PM CDTSevere Thunderstorm WarningBMXSt. Clair, Shelby60 min
Aug 16, 3:30 PM CDTSevere Thunderstorm WarningBMXEtowah60 min
Aug 16, 3:30 PM CDTSevere Thunderstorm WarningBMXJefferson30 min
Aug 16, 4:08 PM CDTSevere Thunderstorm WarningBMXCalhoun, Talladega52 min
Aug 16, 4:08 PM CDTSevere Thunderstorm WarningBMXCherokee52 min
Aug 16, 4:30 PM CDTSevere Thunderstorm WarningBMXRandolph90 min
Aug 16, 4:50 PM CDTSevere Thunderstorm WarningBMXClay, Cleburne45 min
Aug 16, 5:08 PM CDTSevere Thunderstorm WarningBMXPerry52 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.