Alert archive / Mississippi / Flash Flood Warnings in 1998

Flash Flood Warning 7, NWS New Orleans, LA

January 6, 1998Wilkinson County, Mississippi

NWS New Orleans, LA issued this flash flood warning at Jan 6, 1998, 9:57 PM CST for Wilkinson 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 6, 1998, 9:57 PM CST (03:57 UTC)
Expired: Jan 7, 1998, 1:55 AM CST
In force: 4 hr
Issued by: NWS New Orleans, LA
Area: Whole counties

County Wilkinson County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 4.0 hours before the alert went out and 174 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: 691 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: -35 m²/s²
0-3 km storm-relative helicity: 87 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 KNEW 070357
FFWNEW
LAC034-037-091-105-125-MSC005-113-157-070755-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
957 PM CST TUE JAN 6 1998

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS LA HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 155 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN SOUTHEASTERN LOUISIANA

   ...POINTE COUPEE PARISH
   ...WEST FELICIANA PARISH
   ...EAST FELICIANA PARISH
   ...ST HELENA PARISH
   ...TANGIPAHOA PARISH

IN SOUTHERN MISSISSIPPI

   ...WILKINSON COUNTY
   ...AMITE COUNTY
   ...PIKE COUNTY

AT 955 PM CDT...DOPPLER RADAR INDICATED WIDESPREAD RAIN...HEAVY IN
MANY LOCATTIONS...WITH EMBEDDED THUNDERSTORMS OVER MOST OF SOUTHEAST
LOUISIANA AND SOUTHWEST MISSISSIPPI. RAINFALL RATES OF ONE-HALF TO
ONE INCH PER HOUR HAVE BEEN REPORTED WHICH HAS CAUSED SOME AREAS OF
FLOODING THIS EVENING IN THE BATON ROUGE AREA. ADDITIONAL RAINFALL
AMOUNTS OF 2 TO 3 INCHES WITH LOCALLY HEAVIER AMOUNTS CAN BE
EXPECTED THE IN THE WARNED AREA THE REMAINDER OF TONIGHT...
INCREASING THE LIKELIHOOD OF FLOODING.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT. IT IS
IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIlVERS...OR
CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS SHOULD
AVOID CAMPING ALONG STREAMS OR CREEKS DURING THREATENING RAINS.


22

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 6, 9:57 PM CST	Flash Flood Warning	LIX	Amite	4 hr
Jan 6, 9:57 PM CST	Flash Flood Warning	LIX	Pike	4 hr
Jan 7, 1:13 AM CST	Severe Thunderstorm Warning	LIX	Hancock	32 min
Jan 7, 1:42 AM CST	Flash Flood Warning	LIX	Hancock, Pearl River	3 hr
Jan 7, 3:42 AM CST	Severe Thunderstorm Warning	LIX	Harrison	48 min
Jan 7, 4:25 AM CST	Flash Flood Warning	LIX	Harrison, Jackson	3 hr
Jan 7, 5:09 AM CST	Flash Flood Warning	LIX	Pearl River	116 min
Jan 7, 7:30 AM CST	Flash Flood Warning	LIX	Harrison, Jackson	90 min

Nearby

Flash Flood Warnings in Mississippi, 1998 Every 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.