Alert archive / Mississippi / Flash Flood Warnings in 1990

Flash Flood Warning 7, NWS Jackson, MS

February 2, 1990Washington County, Mississippi

NWS Jackson, MS issued this flash flood warning at Feb 2, 1990, 10:33 PM CST for Washington County, Mississippi. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Feb 2, 1990, 10:33 PM CST (04:33 UTC)
Expired
Feb 3, 1990, 1:30 AM CST
In force
3 hr
Issued by
NWS Jackson, MS
Area
Whole counties

County Washington 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, 4.6 hours before the alert went out and 134 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 1990-02-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 457 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 1990-02-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 square meters per square second.1939587897Sfc1 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
457 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
1162 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
132 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 030434
FFWJAN
MSC151-030730-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1033 PM CST FRI FEB 2 1990
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  130 AM CST
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN NORTHWEST MISSISSIPPI
          ...WASHINGTON
 
AT 1020 PM CST...WASHINGTON COUNTY SHERIFFS OFFICE WAS REPORTIING SOME
STREET FLOODING IN THE CITY OF GREENVILLE. WATER UP TO 1 FOOT DEEP WAS
OCCURRING IN THE DOWNTOWN AREA. ALSO...SOME OF THE DITCHES IN THE
COUNTY WERE REPORTED NEAR BANK FULL. WITH MORE RAIN MOVING INTO THE
COUNTY...FLASH FLOODING IS LIKELY TO CONTINUE FOR THE NEXT FEW HOURS.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  DO NOT STAY IN AREAS SUBJECT TO FLASH FLOODING WHEN
WATER BEGINS RISING.  MOVE TO HIGHER GROUND.
<

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, Feb 2, 6:58 PM CST, 3 hours 35 minutes before
MSZ003-008-030200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
657 PM CST FRI FEB 2 1990

...RAIN AND THUNDERSTORMS DEVELOPING NORTHWARD INTO CENTRAL
MISSISSIPPI...

AT 650 PM...SCATTERED THUNDERSTORMS CONTINUED TO DEVELOP NORTHWARD FROM
SOUTHWEST MISSISSIPPI.  THE STRONGEST OF THESE THUNDERSTORMS WERE
LOCATED NEAR THE COPIAH-SIMPSON COUNTYLINE SOUTH OF GEORGETOWN...AND
NEAR LORMAN IN NORTHERN JEFFERSON COUNTY.

WITH A VERY WARM AND HUMID AIR MASS OVER CENTRAL MISSISSIPPI THIS
EVENING...THESE THUNDERSTORMS WILL LIKELY CONTINUED TO MOVE NORTHWARD
UP INTO CENTRAL MISSISSIPPI OVER THE NEXT TWO HOURS.

THE STORMS CONTAIN OCCASIONAL LIGHTNING...BRIEF PERIODS OF HEAVY RAIN
A=ND SOME GUSTY WINDS.  MOVEMENT WAS NORTHEAST AT 35 MILES AN HOUR.
<
Special weather statement, Feb 2, 9:30 PM CST, 1 hour 3 minutes before
MSZ009-012-ALZ008-013-      -

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
 930 PM CST FRI FEB 2 1990

 SEVERE THUNDERSTORM WATCH NUMBER 13 IS IN EFFECT UNTIL 300 AM CST
SATURDAY MORNING. THIS WATCH INCLUDES ALL COUNTIES IN EAST CENTRAL
MISSISSIPPI.

AT 925 PM CST MERIDIAN RADAR INDICATED A LARGE AREA OF THUNDERSTORMS
ALONG AND 50 MILES EACH SIDE OF A LINE FROM NEAR UTICA MISSISSIPPI TO
NEAR COLOUMBUS MISSISSIPPI. THE STRONGEST THUNDERSTORMS WERE  BETWEEN
NEWTON AND UNION MISSISSIPPI. THE THUNDERSTORMS WERE MOVING NORTHEAST
AT 30 MILES AN HOUR. <<
Local storm report, Feb 2, 9:41 PM CST, 52 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
945 PM CST FRI FEB 2 1990

748 PM...1 INCH HAIL REPORTED 7 MILES NORTHEAST OF BRANDON...RANKIN CO
         ...BY WEATHER SERVICE EMPLOYEE.

905 PM...GOLFBALL SIZE HAIL REPORTED NEAR LELAND BY WASHINGTON S.O.
Local storm report, Feb 2, 10:14 PM CST, 19 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1015 PM CST FRI FEB 2 1990

748 PM...1 INCH HAIL REPORTED 7 MILES NORTHEAST OF BRANDON...RANKIN CO
         ...BY WEATHER SERVICE EMPLOYEE.

905 PM...GOLFBALL SIZE HAIL REPORTED NEAR LELAND BY WASHINGTON S.O.

1010 PM...UNCONFIRMED TORNADO REPORTED BY GRENADA P.D. NEAR HOLCOMB.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 2, 7:51 PM CSTSevere Thunderstorm WarningJANRankin39 min
Feb 2, 8:06 PM CSTSevere Thunderstorm WarningJANIssaquena39 min
Feb 2, 8:24 PM CSTSevere Thunderstorm WarningJANHinds36 min
Feb 2, 8:34 PM CSTSevere Thunderstorm WarningJANSunflower26 min
Feb 2, 8:45 PM CSTSevere Thunderstorm WarningJANWashington30 min
Feb 2, 9:07 PM CSTSevere Thunderstorm WarningJANLeflore38 min
Feb 2, 9:16 PM CSTSevere Thunderstorm WarningJANHinds29 min
Feb 2, 9:31 PM CSTTornado WarningJANLeflore, Tallahatchie29 min
Feb 2, 9:53 PM CSTTornado WarningJANGrenada37 min
Feb 2, 10:27 PM CSTTornado WarningJANYalobusha33 min
Feb 2, 10:47 PM CSTTornado WarningJANCalhoun28 min
Feb 2, 11:26 PM CSTSevere Thunderstorm WarningJANBolivar34 min
Feb 3, 4:21 PM CSTTornado WarningJANKemper, Neshoba, Noxubee, Winston54 min
Feb 3, 4:28 PM CSTSevere Thunderstorm WarningJANJasper32 min
Feb 3, 4:55 PM CSTSevere Thunderstorm WarningJANLamar, Marion35 min
Feb 3, 4:57 PM CSTSevere Thunderstorm WarningJANClarke48 min
Feb 3, 5:15 PM CSTSevere Thunderstorm WarningJANKemper45 min
Feb 3, 5:19 PM CSTSevere Thunderstorm WarningJANNewton41 min
Feb 3, 5:25 PM CSTSevere Thunderstorm WarningJANLauderdale50 min
Feb 3, 5:57 PM CSTSevere Thunderstorm WarningJANJasper48 min

Nearby

Flash Flood Warnings in Mississippi, 1990Every flash flood warning in 1990

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.