Alert archive / Mississippi / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 79, NWS Jackson, MS

August 2, 1986Pike County, Walthall County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Aug 2, 1986, 11:26 AM CDT for Pike County, Walthall County, Mississippi. It was in force for 34 min. 1 report 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 2, 1986, 11:26 AM CDT (16:26 UTC)
Expired
Aug 2, 1986, 12:00 PM CDT
In force
34 min
Issued by
NWS Jackson, MS
Area
Whole counties

Counties Pike County, MS, Walthall County, MS

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 2, 11:55 AM CDTHail 1Pike, MS

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

Jackson, MS (KJAN), launched 12:00Z, 4.4 hours before the alert went out and 130 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, Jackson, MS at 12:00Z on 1986-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1468 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, Jackson, MS at 12:00Z on 1986-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 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
1468 J/kg
Mixed-layer CIN
-135 J/kg
Mixed-layer LCL
1248 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
61 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 
TTAAOO KJAN 021626
SVRJAN
MSC113-147-021700-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1126 AM CDT SAT AUG  2 1986
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 1200 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES:
 
IN SOUTHWEST MISSISSIPPI
          ..SOUTHERN PIKE
IN SOUTH CENTRAL MISSISSIPPI
          ..SOUTHERN WALTHALL

AT 1130 AM RADAR INDICATED A SEVERE THUNDERSTORM OVER SOUTH
MISSISSIPPI SOUTH OF MCCOMB BETWEEN FERNWOOD AND TYLERTOWN. THIS
THUNDERSTORM WILL BE MOVING RAPIDLY THROUGH THE SOUTHERN SECTIONS OF
PIKE AND WALTHALL COUNTIES DURING THE NEXT 30 MINUTES.
 
MOVEMENT WAS SOUTHEAST AT 35 MILES AN HOUR.
 
 
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 LO+WEST 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.

In the hours before

Special weather statement, Aug 2, 7:14 AM CDT, 4 hours 12 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
710 AM CDT SAT AUG 2 1986

THUNDERSTORMS CONTINUE TO MOVE INTO NORTHWEST MISSISSIPPI.

AT 705 AM THE LEADING EDGE OF THE RAIN AND THUNDERSTORMS EXTENDED FROM
WATER VALLEY TO CLEVELAND AND INTO ARKANSAS. THE AREA OF RAIN AND
THUNDERSTORMS WAS MOVING TO THE SOUTH AT 40 MPH.

SOME OF THE HEAVIER THUNDERSTORMS IN THIS AREA MAY BE ACCOMPANIED BY
BRIEF HEAVY RAIN...STRONG GUSTY WINDS AN`D POSSIBLE HAIL.

PERSONS IN NORTHWEST MISSISSIPPI SHOULD BE ON THE ALERT FOR THE NEXT
HOUR OR TWO...AND BE PREPARED TO TAKE ACTION IF THREATENING WEATHER
APPROACHES.
Special weather statement, Aug 2, 8:35 AM CDT, 2 hours 51 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
835 AM CDT SAT AUG 2 1986

AN AREA OF RAIN AND THUNDERSTORMS OVER NORTH MISSISSIPPI WAS RAPIDLY
MOVING SOUTH TOWARD CENTRAL MISSISSIPPI.

AT 830 AM...THE LEADING EDGE OF AN AREA OF RAIN AND THUNDERSTORMS OVER
MOST OF NORTHWEST MISSISSIPPI WAS NEAR A HOLLY BLUFF TO PICKENS TO
ACKERMAN TO OXFORD LINE.  THE AREA OF SCATTERED THUNDERSTORMS WAS STILL
PLOWING SOUTHWARD AT 40 MILES AN HOUR.

ALTHOUGH SATELLITE PICTURES INDICATED THE AREA OF STORMS AS A WHOLE
HAD SHOWN A DECREASE IN INTENSITY OVER THE PAST COUPLE OF HOURS...
THE STORMS ARE STILL PRODUCING BRIEF PERIODS OF HEAVY RAIN AND STRONG
GUSTY WINDS.

THE MOST INTENSE THUNDERSTORMS WERE OVER NORTHWEST AND NORTH-CENTRAL
MISSISSIPPI NEAR GREENVILLE..WEST OF GREENWOOD..AND NORTHEAST OF DURANT.
STRONG THUNDERSTORMS WERE ALSO MOVING INTO THE NORTHEAST CORNER OF
LOUISIANA NORTHWEST OF LAKE PROVIDENCE.

THE STORMS WERE MOVING SOUTH AT 40 MILES AN HOUR.
Special weather statement, Aug 2, 9:00 AM CDT, 2 hours 26 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUPELO MS
900 AM CDT SAT AUG 2 1986

    ...MUCH NEEDED RAINFALL MOVING ACROSS NORTH MISSISSIPPI...

AT 900 AM CDT...THE NATIONAL WEATHER SERVICE RADAR HERE IN TUPELO
SHOWED A LARGE AREA OF MOSTLY LIGHT RAIN WITH A FEW HEAVY
THUNDERSTORMS MOVING ACROSS NORTH MISSISSIPPI.  THIS ACTIVITY WAS
LOCATED WEST OF A LINE FROM JACKSON TENNESSEE TO TUPELO TO COLUMBUS
MISSISSIPPI AND WAS MOVING SOUTHEAST AT 40 MILES AN HOUR.

THIS AREA OF PRECIPITATION COUPLED WITH BRISK NORTHWEST WINDS PROMISES
TO GIVE SOME RELIEF TO OUR PAST HEAT WAVE AND DRY SPELL.
HOWEVER..THIS CHANGE IS LIKELY TO PRODUCE SOME PROBLEMS.

THE HEAVIER THUNDERSTORMS COULD PRODUCE WIND GUSTS TO 45 MILES AN HOUR
AND THE ONSET OF RAINFALL WILL MAKE HIGHWAYS BECOME VERY SLICK.
Special weather statement, Aug 2, 9:53 AM CDT, 1 hour 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
950 AM CDT SAT AUG 2 1986

AT 947 AM RADAR SHOWED A 15 MILE WIDE AREA OF SCATTERED VERY HEAVY
THUNDERSTORMS EXTENDING FROM BRANDON THROUGH PHILADELPHIA TO 10 MILES
EAST OF LOUISVILLE MISSISSIPPI.

THE AREA WAS MOVING SOUTHEAST AT 40 MPH.

THOSE ATTENDING THE NESHOBA COUNTY FAIR CAN EXPECT LIGHTNING...GUSTY
WINDS AND PERIODS OF VERY HEAVY RAIN FOR THE NEXT 20 TO 30 MINUTES OR
UNTIL 1020 AM.

THE AREA OF STORMS IS EXPECTED TO CONTINUE MOVING RAPIDLY SOUTHEAST
AND MERIDIAN CAN EXPECT THE SAME LATER THIS MORNING.
Special weather statement, Aug 2, 11:22 AM CDT, 4 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
1115 AM CDT SAT AUG 2 1986

AROUND 1039 AM CDT A "GUST FRONT" PASSED THROUGH MERIDIAN AND WAS
MOVING RAPIDLY SOUTHEAST. AT 1110 AM RADAR SHOWED THE GUST FRONT
WAS BETWEEN SANDERSVILLE MISSISSIPPI AND YORK ALABAMA.  IT APPEARS
TO BE SLOWING DOWN A LITTLE.

WITH THE PASSAGE OF THIS GUST FRONT THE TEMPERATURE AT MERIDIAN
DROPPED 10 DEGREES ..FROM 92 TO 82.. AND THE WINDS GUSTED T'O 35 MPH.
ALSO A FEW PLACE IN TOWN RECIEVED A LIGHT SHOWER.

THOSE OF YOU LIVING ALONG OR AHEAD OF THIS GUST FRONT CAN EXPECT THE
SAME TYPE OF WEATHER FOR 30 TO 40 MINUTES. LATER ON HEAVY
THUNDERSTORMS COULD DEVELOPE ALONG THIS FRONT.

Nearby

Severe 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.