Alert archive / Mississippi / Flash Flood Warnings in 1998

Flash Flood Warning 23, NWS Jackson, MS

May 28, 1998Humphreys County, Mississippi

NWS Jackson, MS issued this flash flood warning at May 28, 1998, 7:55 PM CDT for Humphreys County, Mississippi. 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
May 28, 1998, 7:55 PM CDT (00:55 UTC)
Expired
May 28, 1998, 9:55 PM CDT
In force
2 hr
Issued by
NWS Jackson, MS
Area
Whole counties

County Humphreys County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 0.9 hours before the alert went out and 99 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 1998-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1879 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 1998-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 square meters per square second.1939Sfc1 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
1879 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
1609 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
73 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 290055
FFWJAN
MSC053-290255-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
755 PM CDT THU MAY 28 1998

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

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

* UNTIL 955 PM CDT

* AT 753 PM... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH VERY HEAVY RAIN OVER HUMPHREYS COUNTY...THE
  STORMS WERE NEARLY STATIONARY.

* HEAVY RAIN HAS PERSISTED OVER THE COUNTY FOR THE PAST TWO HOURS.
  FLOODING OF LOW-LYING AND POOR DRAINAGE AREAS ARE LIKELY.

DON'T DRIVE ACROSS FLOODED ROADS! MOST FLASH FLOOD DEATHS OCCUR IN
AUTOMOBILES.

75

The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 7:03 PM CDTSevere Thunderstorm WarningJANYazoo32 min
May 28, 7:10 PM CDTFlash Flood WarningJANYazoo2 hr
May 28, 7:12 PM CDTSevere Thunderstorm WarningJANSunflower48 min
May 28, 7:13 PM CDTSevere Thunderstorm WarningJANHumphreys52 min
May 28, 7:20 PM CDTSevere Thunderstorm WarningJANLeflore50 min
May 28, 7:33 PM CDTSevere Thunderstorm WarningJANCarroll47 min
May 28, 7:39 PM CDTSevere Thunderstorm WarningJANCovington51 min
May 28, 8:07 PM CDTSevere Thunderstorm WarningJANClaiborne, Copiah48 min
May 28, 8:11 PM CDTSevere Thunderstorm WarningJANFranklin49 min
May 28, 8:13 PM CDTSevere Thunderstorm WarningJANJones47 min
May 28, 8:16 PM CDTSevere Thunderstorm WarningJANSimpson49 min
May 28, 8:28 PM CDTSevere Thunderstorm WarningJANJasper47 min
May 28, 8:37 PM CDTSevere Thunderstorm WarningJANHinds, Madison48 min
May 28, 8:42 PM CDTSevere Thunderstorm WarningJANSmith48 min
May 28, 8:57 PM CDTFlash Flood WarningJANCarroll, Leflore118 min
May 28, 8:57 PM CDTFlash Flood WarningJANMontgomery118 min
May 28, 8:59 PM CDTSevere Thunderstorm WarningJANYazoo51 min
May 28, 9:41 PM CDTSevere Thunderstorm WarningJANAttala49 min
May 28, 10:07 PM CDTSevere Thunderstorm WarningJANIssaquena, Warren48 min
May 28, 10:16 PM CDTSevere Thunderstorm WarningJANLauderdale49 min
May 28, 10:36 PM CDTSevere Thunderstorm WarningJANLeflore49 min
May 28, 10:45 PM CDTSevere Thunderstorm WarningJANSimpson, Smith50 min
May 28, 10:51 PM CDTTornado WarningJANSimpson, Smith34 min
May 29, 3:25 AM CDTSevere Thunderstorm WarningJANNeshoba, Newton50 min
May 29, 3:41 AM CDTFlash Flood WarningJANAttala89 min
May 29, 4:33 AM CDTFlash Flood WarningJANBolivar, Washington92 min

Nearby

Flash Flood Warnings in Mississippi, 1998Every flash flood warning in 1998

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.