Alert archive / Mississippi / Flash Flood Warnings in 1999

Flash Flood Warning 18, NWS Jackson, MS

January 29, 1999Attala County, Mississippi

NWS Jackson, MS issued this flash flood warning at Jan 29, 1999, 4:19 PM CST for Attala County, Mississippi. It was in force for 4 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, 4:19 PM CST (22:19 UTC)
Expired
Jan 29, 1999, 8:00 PM CST
In force
4 hr
Issued by
NWS Jackson, MS
Area
Whole counties

County Attala County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 10.3 hours before the alert went out and 97 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 292219
FFWJAN
MSC007-300200-

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

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ATTALA COUNTY IN CENTRAL MISSISSIPPI

* UNTIL 800 PM CST

* AT 415 PM CST...RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAIN
  OVER ATTALA COUNTY... MOVING EAST AT 30 MPH.

* SINCE 3 PM...RAINFALL AMOUNTS ON THE ORDER OF 1 :TO 2 INCHES HAVE
  OCCURRED. CIVIL DEFENSE REPORTS NUMEROUS ROADS UNDER WATER AND
  ONE HOME IN KOSCIUSKO WITH WATER ENTERING IT.

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

74


&

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 29, 2:09 PM CSTFlash Flood WarningJANHolmes, Humphreys, Leflore, Sharkey, Sunflower, Washington and 1 more6 hr
Jan 29, 2:09 PM CSTFlash Flood WarningJANCarroll, Grenada6 hr
Jan 29, 2:09 PM CSTFlash Flood WarningJANIssaquena6 hr
Jan 29, 2:09 PM CSTFlash Flood WarningJANBolivar6 hr
Jan 29, 2:47 PM CSTSevere Thunderstorm WarningJANHinds, Madison48 min
Jan 29, 2:56 PM CSTSevere Thunderstorm WarningJANRankin49 min
Jan 29, 4:33 PM CSTFlash Flood WarningJANAdams5 hr
Jan 29, 4:33 PM CSTFlash Flood WarningJANJefferson5 hr
Jan 29, 5:10 PM CSTSevere Thunderstorm WarningJANFranklin50 min
Jan 29, 5:17 PM CSTTornado WarningJANFranklin33 min
Jan 29, 5:33 PM CSTTornado WarningJANLincoln57 min

Nearby

Flash Flood Warnings in Mississippi, 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.