Alert archive / Arkansas / Flash Flood Warnings in 1999

Flash Flood Warning 8, NWS Jackson, MS

January 29, 1999Ashley County, Arkansas

NWS Jackson, MS issued this flash flood warning at Jan 29, 1999, 9:06 AM CST for Ashley County, Arkansas. It was in force for 2 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, 9:06 AM CST (15:06 UTC)
Expired
Jan 29, 1999, 11:10 AM CST
In force
2 hr
Issued by
NWS Jackson, MS
Area
Whole counties

County Ashley County, AR

The radar

The Little Rock radar (KLZK), 189 km from the middle of the area, began a volume at 15:09 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 3.1 hours before the alert went out and 185 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 12:00Z on 1999-01-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 55 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 12:00Z on 1999-01-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 172 square meters per square second.193958Sfc1 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
55 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
528 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
172 m²/s²
0-3 km storm-relative helicity
197 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 291506
FFWJAN
ARC003-017-LAC035-067-123-291710-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
906 AM CST FRI JAN 29 1999

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

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

* UNTIL 1110 AM CST


* A LARGE AREA OF RAIN AND EMBEDDED THUNDERSTORMS WILL CONTINUE
  MOVING SLOWLY ACROSS THE AREA THROUGH MID MORNING. RAINFALL
  AMOUNTS OF 2 TO 4 INCHES HAVE ALREADY OCCURRED WITH ADDITIONAL
  AMOUNTS OF 1 TO 2 INCHES EXPECTED THROUGH MID MORNING.

NUMEROUS PARISH ROADS WERE REPORTED UNDER WATER IN WEST CARROLL
PARISH BY THE SHERIFFS DEPARTMENT.

DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD!

82


&

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 29, 9:06 AM CSTFlash Flood WarningJANChicot2 hr
Jan 29, 11:03 AM CSTFlash Flood WarningJANAshley, Chicot3 hr
Jan 29, 2:09 PM CSTFlash Flood WarningJANChicot6 hr
Jan 29, 2:09 PM CSTFlash Flood WarningJANAshley6 hr

Nearby

Flash Flood Warnings in Arkansas, 1999Every 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; radar from the NEXRAD Level II archive.