Alert archive / Mississippi / Flash Flood Warnings in 2001

Flash Flood Warning 34, NWS Jackson, MS

April 4, 20015 counties in Mississippi

NWS Jackson, MS issued this flash flood warning at Apr 4, 2001, 9:20 PM CDT for 5 counties in Mississippi. It was in force for 3 hr. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 4, 2001, 9:20 PM CDT (02:20 UTC)
Expired: Apr 5, 2001, 12:15 AM CDT
In force: 3 hr
Issued by: NWS Jackson, MS
Area: Whole counties

Counties Attala County, MS, Leake County, MS, Neshoba County, MS, Newton County, MS, Scott County, MS

What was reported inside it

Time	Report	Where	Remark
Apr 4, 9:30 PM CDT	Flash Flood	Forest, MS	Several homes were flooded.
Apr 4, 9:30 PM CDT	Flash Flood	Countywide, MS	Many roads were flooded, mainly in northern portions of the county.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 2.3 hours before the alert went out and 77 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: 1845 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1225 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 282 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 11.9

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KJAN 050218
FFWJAN
MSC007-079-099-101-123-050515-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
920 PM CDT WED APR 4 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NEWTON COUNTY IN EAST CENTRAL MISSISSIPPI
  LEAKE COUNTY IN CENTRAL MISSISSIPPI
  NESHOBA COUNTY IN EAST CENTRAL MISSISSIPPI
  SCOTT COUNTY IN CENTRAL MISSISSIPPI
  ATTALA COUNTY IN CENTRAL MISSISSIPPI

* UNTIL 1215 AM CDT

* AT 930 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
  SHOWERS AND THUNDERSTORMS CONTINUING FROM 5 MILES SOUTHWEST OF
  KOSCIUSKO...TO NEAR FOREST TO BETWEEN PHILADELPHIA AND NEWTON.
  THIS AREA HAS ALREADY SEEN 3 TO 9 INCHES OF RAINFALL THE PAST
  3 TO 6 HOURS...ESPECIALLY PORTIONS OF ATTALA...LEAKE AND NESHOBA
  COUNTIES. AN ADDITIONAL 2 TO 3 INCHES POSSIBLE THROUGH MIDNIGHT
  AS HEAVY SHOWERS AND THUNDERSTORMS MOVE OVER ALREADY OVER- 
  SATURATED GROUNDS. 

DO NOT DRIVE OVER WATER COVERED ROADS BE ESPECIALLY CAUTIOUS AT 
NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND 
FLASH FLOODS. SEEK HIGHER GROUND IF YOU LIVE IN FLOOD PRONE AREAS OR
NEAR FLASHY RIVERS AND CREEKS.

MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO
CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT.

62

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 4, 7:34 PM CDT	Flash Flood Warning	JAN	Leake	116 min
Apr 4, 8:21 PM CDT	Flash Flood Warning	JAN	Holmes	4 hr
Apr 4, 8:51 PM CDT	Severe Thunderstorm Warning	JAN	Clarke	39 min
Apr 4, 9:26 PM CDT	Severe Thunderstorm Warning	JAN	Newton, Scott	49 min
Apr 4, 9:29 PM CDT	Severe Thunderstorm Warning	JAN	Rankin	16 min
Apr 4, 10:00 PM CDT	Severe Thunderstorm Warning	JAN	Smith	60 min
Apr 4, 10:16 PM CDT	Severe Thunderstorm Warning	JAN	Jasper, Newton, Scott, Smith	59 min
Apr 4, 11:13 PM CDT	Severe Thunderstorm Warning	JAN	Jasper, Smith	62 min

Nearby

Flash Flood Warnings in Mississippi, 2001 Every flash flood warning in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.