Alert archive / Louisiana / Flash Flood Warnings in 1999

Flash Flood Warning 22, NWS Jackson, MS

January 29, 1999Morehouse Parish, Richland Parish, West Carroll Parish, Louisiana; Ashley County, Chicot County, Arkansas

NWS Jackson, MS issued this flash flood warning at Jan 29, 1999, 7:45 PM CST for Morehouse Parish, Richland Parish, West Carroll Parish, Louisiana; Ashley County, Chicot County, Arkansas. It was in force for 28 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jan 29, 1999, 7:45 PM CST (01:45 UTC)
Expired: Jan 31, 1999, 12:00 AM CST
In force: 28 hr
Issued by: NWS Jackson, MS
Area: Whole counties

Counties Ashley County, AR, Chicot County, AR, Morehouse Parish, LA, Richland Parish, LA, West Carroll Parish, LA

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 1.8 hours before the alert went out and 158 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 582 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: -80 m²/s²
0-3 km storm-relative helicity: -28 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 
TTAA00 KJAN 300144 COR
FFWJAN
ARC003-017-LAC035-065-067-083-123-300600-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING...CORRECTION TO EXPIRATION TIME
NATIONAL WEATHER SERVICE JACKSON MS
745 PM CST FRI JAN 29 1999

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED

* FLASH FLOOD WARNING FOR...
  ASHLEY COUNTY IN SOUTHEASTERN ARKANSAS
  CHICOT COUNTY IN SOUTHEASTERN ARKANSAS
  EAST CARROLL PARISH IN NORTHEASTERN LOUISIANA
  MADISON PARISH IN NORTHEASTERN LOUISIANA
  MOREHOUSE PARISH IN NORTHEASTERN LOUISIANA
  WEST CARROLL PARISH IN NORTHEASTERN LOUISIANA
  RICHLAND PARISH IN NORTHEASTERN LOUISIANA

* UNTIL 1200 PM MIDNIGHT CST

* LATE THIS EVENING RADAR INDICATED AREAS OF HEAVY RAIN AND
THUNDERSTORMS CONTINUING TO MOVE NORTHEAST ACROSS THE WARNED
COUNTIES. DOPPLER RADAR AND SURFACE REPORTS INDICATE THAT ANYWHERE
FROM 3 TO 8 INCHES OF RAIN HAS BEEN COMMON IN THE WARNING AREA
TODAY.

* MANY FLOODING PROBLEMS HAVE BEEN REPORTED IN THE WARNED AREA
TODAY...INCLUDING FLOODING OF ROADWAYS AND SOME WATER IN HOMES.
ADDITIONAL HEAVY RAINFALL THROUGH THE REMAINDER OF THE EVENING WILL
ONLY SERVE TO AGGRAVATE FLOODING PROBLEMS.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGER OF FLOODING.

AREA RESIDENTS SHOULD MONITOR FLOOD CONDITIONS... AND BE PREPARED
TO MOVE TO HIGHER GROUND... SHOULD FLOOD WATERS THREATEN. IF FLASH
FLOODING IS OBSERVED... ACT QUICKLY. MOVE TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

65
&

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

Local storm report, Jan 29, 6:18 PM CST, 1 hour 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
618 PM CST FRI JAN 29 1999

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....PARISH/COUNTY LOCATION....

0605 PM    BROOKHAVEN                MS   .75 INCH HAIL
01/29/99   LINCOLN                        DIME SIZE HAIL REPORTED BY
                                          CIVIL DEFENSE.

0600 PM    2 W BROOKHAVEN            MS   .75 INCH HAIL
01/29/99   LINCOLN                        DIME SIZE REPORTED BY
                                          CIVIL DEFENSE.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 29, 7:45 PM CST	Flash Flood Warning	JAN	East Carroll, Madison	28 hr
Jan 29, 9:29 PM CST	Flash Flood Warning	JAN	Catahoula, Concordia, Franklin, Tensas	5 hr
Jan 29, 11:57 PM CST	Flash Flood Warning	JAN	East Carroll, Madison, Richland	4 hr
Jan 29, 11:57 PM CST	Flash Flood Warning	JAN	Morehouse	4 hr
Jan 29, 11:57 PM CST	Flash Flood Warning	JAN	West Carroll	4 hr

Nearby

Flash Flood Warnings in Louisiana, 1999 Flash Flood Warnings in Arkansas, 1999 Every flash flood warning in 1999

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.