Alert archive / Mississippi / Flash Flood Warnings in 1989

Flash Flood Warning 9, NWS Jackson, MS

May 18, 1989Lincoln County, Mississippi

NWS Jackson, MS issued this flash flood warning at May 18, 1989, 7:31 PM CDT for Lincoln County, Mississippi. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
May 18, 1989, 7:31 PM CDT (00:31 UTC)
Expired
May 18, 1989, 10:00 PM CDT
In force
2 hr
Issued by
NWS Jackson, MS
Area
Whole counties

County Lincoln 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, 0.5 hours before the alert went out and 94 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 1989-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 45 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 1989-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 250 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
45 J/kg
Mixed-layer CIN
-67 J/kg
Mixed-layer LCL
588 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
250 m²/s²
0-3 km storm-relative helicity
386 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 190035 RRA
FFWJAN
MSC029-049-085-190300-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
731 PM CDT THU MAY 18 1989
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  1000 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN CENTRAL MISSISSIPPI
          ...COPIAH...HINDS
IN SOUTHWEST MISSISSIPPI
          ...LINCOLN
 
RAINFALL AMOUNTS OF 2 TO 3 INCHES HAVE FALLEN OVER PORTIONS OF HINDS...COPIAH AND LINCOLN COUNTIES DURING THE LAST 6 HOURS. MORE HEAVY
THUNDERSTORMS WILL MOVE ACROSS THESE COUNTIES DURING THE NEXT COUPLE
OF HOURS. THE HEAVY RAINFALL WILL RESULT IN RUNOFF THAT WILL BEGIN
FLOODING LOW LYING AREAS AND SOME ROADWAYS. SMALL CREEKS WILL ALSO
LIKELY BEGIN OVERFLOWING.
AT NIGHT BE ESPECIALLY CAUTIOUS WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE SWIFTLY TO ESCAPE FLOOD WATEERS.
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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 18, 4:40 PM CDT, 2 hours 51 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
435 PM CDT THU MAY 18 1989

...A TORNADO WATCH IS IN EFFECT FOR PORTIONS OF SOUTHEAST MISSISSIPPI
   UNTIL 10 PM...

AT 435 PM...A LINE OF STRONG THUNDERSTORMS WITH VERY HEAVY RAINFALL
EXTENDED ACROSS SOUTHWEST MISSISSIPPI FROM 25 MILES WEST OF JACKSON TO
35 MILES SOUTHWEST OF MCCOMB. THE LINE OF THUNDERSTORMS WAS MOVING
EAST AT 10 MILES AN HOUR. THUNDERSTORMS PASSING OVER THE SAME AREA
WAS PRODUCING SOME FLOODING.

OTHER THUNDERSTORMS WAS LOCATED IN A VERY LARGE AREA OF RAIN THAT
COVERED MOST OF MISSISSIPPI...EXCEPT FOR THE SOUTHEASTERN PORTION
OF THE STATE. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 35 MILES
AN HiOUR.

THE CHANCE OF SEVERE WEATHER WILL CONTINUE MAINLY IN SOUTH MISSISSIPPI.
LATER STATEMENTS AND WARNINGS WILL BE ISSUED AS NEEDED.
Special weather statement, May 18, 5:29 PM CDT, 2 hours 2 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
525 PM CDT THU MAY 18 1989

 TORNADO WATCH NUMBER 271 IS IN EFFECT UNTIL 1000 PM CDT
AND INCLUDES CLARKE...JONES...AND WAYNE COUNTIES IN EAST CENTRAL
MISSISSIPPI AND CHOCTAW COUNTY IN WEST CENTRAL ALABAMA.

AT 520 PM CDT MERIDIAN WEATHER RADAR INDICATED AN 80 MILE WIDE AREA OF
RAIN WITH STRONG THUNDERSTORMS EXTENDED FROM OKOLONA MISSISSIPPI TO
NEAR MCCOMB MISSISSIPPI. THE HEAVIEST RAINFALL WAS OCCURING IN
LAUDERDALE AND CLARKE COUNTIES.

THE AREA WAS MOVING EAST AT 10 MPH.

EVERYONE IN OR NEAR THE WATCH AREA SHOULD REMAIN ALERT FOR SEVERE
WEATHER THIS EVENING AND TONIGHT.
Special weather statement, May 18, 5:49 PM CDT, 1 hour 42 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
545 PM CDT THU MAY 18 1989

AT 540 PM...NUMEROUS HEAVY THUNDERSTORMS WERE IN A 30 MILE WIDE BAND
FROM CANTON TO JACKON TO MCCOMB. THESES THUNDERSTORMS ARE PRODUCING
VERY HEAVY RAINS AS THE BAND MOVES TO THE EAST AT 10 MPH.

OTHER SHOWERS AND THUNDERSTORMS COVER MOST OF MISSISSIPPI EAST OF A
MERIDIAN TO COLUMBIA LINE. THE AREA IS MOVING EAST AT 20 MPH.
Special weather statement, May 18, 6:00 PM CDT, 1 hour 31 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
600 PM CDT THU MAY 18 1989

...A HIGH WIND WARNING FOR NORTHWEST MISSISSIPPI UNTIL 730 PM...

AROUND 530 PM...HIGH WINDS ESTIMATED AT ABOUT 50 MILES AN HOUR WERE
REPORTED OVER WESTERN BOLIVAR COUNTY.  SOME TREES WERE DOWN OVER ROADS
...SOME POWER LINES WERE BLOWN DOWN...AND THERE HAS BEEN SOME REPORTED
STRUCTURAL DAMAGE.

THESE HIGH WINDS ARE NOT DUE TO THUNDERSTORMS...BUT RATHER TO A VERY
STRONG PRESSURE GRADIENT OVER NORTHWEST MISSISSIPPI.  MORE HIGH WINDS
ARE POSSIBLE OVER NORTHWEST MISSISSIPPI...GENERALLY WEST OF A GREENWOOD
TO OXFORD LINE UNTIL 730 PM.  IF CONDITIONS PERSIST LONGER THAN THAT...
AND AN UPDATED STATEMENT WILL HAVE TO BE ISSUED.
Local storm report, May 18, 6:48 PM CDT, 43 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
648 PM CDT THU MAY 18 1989

114 PM...FAYETTE...JEFFERSON CO...PENNY SIZED HAIL REPORTED BY FAYETTE
         P.D.
208 PM...4 MILES SE OF PINOLA...SIMPSON CO...DIME SIZED HAIL.
215 PM...TREES AND POWER LINES DOWN NEAR PINOLA...TORNADO HAS NOT BEEN
         CONFIRMED SO FAR.
510 PM...JACKSON...STREET FLOODING REPORTED AT JACKSON MALL BY JACKSON
         -HINDS EOC.
515 PM...3 MILES EAST OF THE PIKE/AMITE COUNTY LINE (AMITE CO)...HWY 24
         ...TREES ON CARS, HOMES, ROADS.  FENCES ALSO BLOWN DOWN.
535 PM...ROSEDALE...BOLIVAR CD REPORTED TREES DOWN...POWER LINES DOWN
         ...SOME STRUCTURAL DAMAGE BY HIGH WINDS (NO THUNDERSTORMS IN
         THE AREA AT THE TIME).
610 PM...CLARKSDALE...COAHOMA CO...CLARKSDALE PD REPORTED 3 LARGE TREES
         DOWN AND SOME PLATE GLASS WINDOWS BLOWN OUT OF A COUPLE
         BUILDINGS (NO THUNDERSTORMS IN THE AREA AT THE TIME).
Special weather statement, May 18, 7:18 PM CDT, 13 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
715 PM CDT THU MAY 18 1989

 TORNADO WATCH NUMBER 271 IS IN EFFECT FOR SOUTHEAST MISSISSIPPI
AND SOUTHWEST ALABAMA UNTIL 1000 PM CDT. THE WATCH INCLUDES CLARKE...
JONES...AND WAYNE COUNTIES IN EAST CENTRAL MISSISSIPPI AND CHOCTAW
COUNTY IN WEST CENTRAL ALABAMA.

AT 710 PM CDT MERIDIAN WEATHER RADAR INDICATED A 125 MILE WIDE AREA OF
RAIN WITH STRONG THUNDERSTORMS EXTENDED FROM OKOLONA MISSISSIPPI TO
NEAR TYLERTOWN MISSISSIPPI. THE HEAVIEST RAINFALL WAS OCCURING IN
LAUDERDALE COUNTY.

THE RAIN AREA WAS MOVING EAST AT 10 MPH WHILE THE THUNDERSTORMS WERE
MOVING NORTHEAST AT 30 MPH.

EVERYONE IN OR NEAR THE WATCH AREA SHO$ULD REMAIN ALERT FOR SEVERE
WEATHER THIS EVENING AND TONIGHT.

The office that day

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

IssuedProductOfficeCountiesLasted
May 18, 7:18 PM CDTFlash Flood WarningJANMarion, Walthall3 hr
May 18, 7:18 PM CDTFlash Flood WarningJANAmite, Pike, Wilkinson3 hr
May 18, 7:31 PM CDTFlash Flood WarningJANCopiah, Hinds2 hr
May 18, 8:01 PM CDTFlash Flood WarningJANRankin, Simpson119 min

Nearby

Flash Flood Warnings in Mississippi, 1989Every flash flood warning in 1989

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.