Alert archive / Mississippi / Flash Flood Warnings in 1986

Flash Flood Warning 1, NWS Jackson, MS

May 30, 1986Jones County, Mississippi

NWS Jackson, MS issued this flash flood warning at May 30, 1986, 9:20 PM CDT for Jones County, Mississippi. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
May 30, 1986, 9:20 PM CDT (02:20 UTC)
Expired
May 30, 1986, 11:20 PM CDT
In force
2 hr
Issued by
NWS Jackson, MS
Area
Whole counties

County Jones 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

Jackson, MS (KJAN), launched 00:00Z, 2.3 hours before the alert went out and 116 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 00:00Z on 1986-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 588 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 00:00Z on 1986-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.19395878Sfc1 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
588 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
1395 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
35 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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 flash flood 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 30, 5:29 PM CDT, 3 hours 51 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
525 PM CDT FRI MAY 30 1986

...A SLOW MOVING LINE OF THUNDERSTORMS OVER SOUTHERN MISSISSIPPI...

AT 525 PM...A NEARLY SOLID LINE OF STRONG THUNDERSTORMS WAS INDICATED
OVER SOUTH MISSISSIPPI FROM 50 MILES SOUTHWEST OF MCCOMB TO 5 MILES
SOUTH OF HATTIESBURG.  THE LINE HAS BEEN SLOWLY DRIFTING TO THE NORTH
OVER THE PAST HOUR.

THE SLOW MOVEMENT OF THE LINE AND THE INTENSITY OF THE STORMS WILL
RESULT IN PERIODS OF HEAVY RAIN OVER THE NEXT COUPLE OF HOURS.  SOME
LOCALIZED FLOODING IN LOW AREAS CAN BE EXPECTED.  IN ADDITION THE
STORMS ARE LIKELY PRODUCING FREQUENT LIGHTNING AND GUSTY WINDS.

ELSEWHERE...A COUPLE OF ISOLATED HEAVY THUNDERSTORMS WERE OCCURRING
OVER EAST CENTRAL MISSISSIPPI...MAINLY 5 TO 15 MILES SOUTHEAST OF
MERIDIAN.  AN AREA OF RAIN AND SCATTERED THUNDERSTORMS ALSO EXTENDED
FROM SOUTHEAST LOUISIANA INTO SOUTHWEST MISSISSIPPI.
<
LITqTLE MOVEMENT WAS NOTED WITH MOST OF THE THUNDERSTORMS...WHILE
THE LINE SOUTH OF MCCOMB AND HATTIESBURG WAS DRIFTING TO THE
NORTH.
Special weather statement, May 30, 6:45 PM CDT, 2 hours 35 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
643 PM CDT FRI MAY 30 1986

AT 640 PM CDT A VERY STRONG THUNDERSTORM WAS LOCATED OVER MERIDIAN
MISSISSIPPI. THE THUNDERSTORM WAS MOVING VERY LITTLE AND OVER AN
INCH OF RAIN HAS FALLEN AT THE MERIDIAN AIRPORT DURING THE PAST
HOUR.

DUE TO THE SLOW MOVEMENT OF THE THUNDERSTORM AND THE VERY HEAVY
RAINS ASSOCIATED WITH IT STREET AND SMALL STREAM FLOODING IS VERY
LIKELY IN THE MERIDIAN MISSISSIPPI AREA FOR THE NEXT TWO HOURS.

PERSONS DRIVING OR LIVING IN LOW AREAS PRONE TO FLOODING SHOULD
BE VERY ALERT FOR THE NEXT TWO HOURS FOR FLOODING. <<
Special weather statement, May 30, 8:37 PM CDT, 43 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
835 PM CDT FRI MAY 30 1986

AT 830 PM CDT..A CLUSTER OF VERY HEAVY THUNDERSTORMS EXTENDED ACROSS
CENTRAL MISSISSIPPI FROM WESTERN HINDS COUNTY EASTWARD INTO SMITH
COUNTY. THE THUNDERSTORMS ON THE LEADING EDGE OF THIS CLUSTER WERE
JUST MOVING INTO THE JACKSON METRO AREA AS THEY DRIFTED NORTH AT
AROUND 10 MPH.

THE SLOW MOVEMENT OF THE THUNDERSTORMS WILL LIKELY RESULT IN PERIODS
OF HEAVY RAIN OVER THE NEXT HOUR OR TWO. SOME LOCALIZED FLOODING IN
LOW AREAS CAN BE EXPECTED..INCLUDING STREET AND URBAN FLOODING IN
SOME OF THE MORE FLOOD PRONE AREAS OF JACKSON. GUSTY WINDS AND FREQUENT
LIGHTNING WILL ALSO ACCOMPANY" THESE STORMS AS THEY CONTINUE DRIFTING
NORTH.
<
LITTLE MOVEMENT WAS NOTED WITH MOST OF THE THUNDERSTORMS...WHILE
THE LINE SOUTH OF MCCOMB AND HATTIESBURG WAS DRIFTING TO THE
NORTH.
Special weather statement, May 30, 8:38 PM CDT, 42 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
835 PM CDT FRI MAY 30 1986

AT 830 PM CDT..A CLUSTER OF VERY HEAVY THUNDERSTORMS EXTENDED ACROSS
CENTRAL MISSISSIPPI FROM WESTERN HINDS COUNTY EASTWARD INTO SMITH
COUNTY. THE THUNDERSTORMS ON THE LEADING EDGE OF THIS CLUSTER WERE
JUST MOVING INTO THE JACKSON METRO AREA AS THEY DRIFTED NORTH AT
AROUND 10 MPH.

THE SLOW MOVEMENT OF THE THUNDERSTORMS WILL LIKELY RESULT IN PERIODS
OF HEAVY RAIN OVER THE NEXT HOUR OR TWO. SOME LOCALIZED FLOODING IN
LOW AREAS CAN BE EXPECTED..INCLUDING STREET AND URBAN FLOODING IN
SOME OF THE MORE FLOOD PRONE AREAS OF JACKSON. GUSTY WINDS AND FREQUENT
LIGHTNING WILL ALSO ACCOMPANY% THESE STORMS AS THEY CONTINUE DRIFTING
NORTH.
Special weather statement, May 30, 8:58 PM CDT, 22 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
900 PM CDT FRI MAY 30 1986

AT 855 PM CDT RADAR INDICATED A CLUSTER OF INTENSE THUNDERSTORMS
WAS LOCATED IN SOUTHERN JASPER..SOUTHWEST CLARKE..NORTHERN JONES
AND NORTHWEST WAYNE COUNTIES IN EAST CENTRAL MISSISSIPPPI.

THE THUNDERSTORMS ARE MOVING VERY LITTLE AND VERY HEAVY RAINS
ARE ASSOCIATED WITH THEM.

SMALL STREAM AND STREET FLOODING IS VERY LIKELY IN THESE AREAS AND
PE3RSONS DRIVING OR LIVING IN THESE AREAS SHOULD BE VERY ALERT FOR
FLOODING FOR THE NEXT TWO HOURS.

PEA SIZE HAIL..DANGEROUS LIGHTNING AND GUSTY WINDS WILL ALSO ACCOMPANY
THESE THUNDERSTORMS. <<

Nearby

Flash Flood Warnings in Mississippi, 1986Every flash flood 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.