Alert archive / Mississippi / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 56, NWS Jackson, MS

May 18, 1986Kemper County, Lauderdale County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at May 18, 1986, 2:18 PM CDT for Kemper County, Lauderdale County, Mississippi. It was in force for 53 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: May 18, 1986, 2:18 PM CDT (19:18 UTC)
Expired: May 18, 1986, 3:11 PM CDT
In force: 53 min
Issued by: NWS Jackson, MS
Area: Whole counties

Counties Kemper County, MS, Lauderdale 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

Time	Report	Where	Remark
May 18, 2:30 PM CDT	Hail 1.5	Kemper, MS
May 18, 2:35 PM CDT	Thunderstorm Wind 0	Lauderdale, 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, 7.3 hours before the alert went out and 137 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: 286 J/kg
Mixed-layer CIN: -58 J/kg
Mixed-layer LCL: 680 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 96 m²/s²
0-3 km storm-relative helicity: 168 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 3.1

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, May 18, 11:10 AM CDT, 3 hours 8 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUPELO MS
1110AM CDT SUN MAY 18 1986

 ...TORNADO WATCH IN EFFECT FOR PORTIONS OF NORTHEAST MISSISSIPPI
UNTIL 500PM CDT...
 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PORTIONS OF NORTH
MISSISSIPPI UNTIL 400PM CDT...

AT 1110AM CDT...RADAR INDICATED AN AREA OF STRONG THUNDERSTORMS FROM
NORTHWEST MISSISSIPPI SOUTHEAST ACROSS PARTS OF NORTHEAST MISSISSIPPI
INTO ALABAMA. THE STRONGEST THUNDERSTORMS ARE LOCATED NEAR SARDIS
RESERVOIR ANDJUST EAST OF FULTON. THE THUNDERSTORMS ARE MOVING
NORTHEAST AT 40 MILES AN HOUR.

ELSEWHERE...VERY STRONG THUNDERSTORMS ARE DEVELOPING RAPIDLY OVER WEST
MISSISSIPPI. THIS ACTIVITY IS EXPECTED TO MOVE INTO NORTHE0AST
MISSISSIPPI THIS AFTERNOON.

PERSONS IN NORTHEAST MISSISSIPPI SHOULD REMAIN HIGHLY ALERT FOR THE
POSSIBILITY OF TORNADOES AND SEVERE THUNDERSTORM DEVELOPEMENT AND STAY
TUNE FOR LATER STATEMENTS OR POSSIBLE WARNINGS.

Special weather statement, May 18, 11:48 AM CDT, 2 hours 30 minutes before

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Special weather statement, May 18, 12:00 PM CDT, 2 hours 18 minutes before

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Special weather statement, May 18, 12:29 PM CDT, 1 hour 49 minutes before

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Special weather statement, May 18, 1:33 PM CDT, 45 minutes before

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The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 18, 11:04 AM CDT	Tornado Warning	JAN	Issaquena, Warren	56 min
May 18, 11:40 AM CDT	Tornado Warning	JAN	Warren	35 min
May 18, 11:55 AM CDT	Severe Thunderstorm Warning	JAN	Madison, Yazoo	55 min
May 18, 2:03 PM CDT	Severe Thunderstorm Warning	JAN	Neshoba, Newton	42 min
May 18, 2:23 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis	37 min
May 18, 2:35 PM CDT	Severe Thunderstorm Warning	JAN	Covington	40 min
May 18, 2:42 PM CDT	Severe Thunderstorm Warning	JAN	Jones	63 min
May 18, 3:20 PM CDT	Severe Thunderstorm Warning	JAN	Marion	25 min
May 18, 3:15 PM CDT	Severe Thunderstorm Warning	JAN	Sumter	60 min

Nearby

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