Alert archive / Mississippi / Flash Flood Warnings in 2004

Flash Flood Warning 41, NWS Jackson, MS

May 18, 2004Hinds County, Mississippi

NWS Jackson, MS issued this flash flood warning at May 18, 2004, 4:56 PM CDT for Hinds County, Mississippi. It was in force for 119 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 18, 2004, 4:56 PM CDT (21:56 UTC)
Expired: May 18, 2004, 6:55 PM CDT
In force: 119 min
Issued by: NWS Jackson, MS
Area: Counties, with a storm outline in the text

County Hinds County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 30 km from the middle of the area, began a volume at 22:00 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, 9.9 hours before the alert went out and 21 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: 103 J/kg
Mixed-layer CIN: -123 J/kg
Mixed-layer LCL: 984 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 42 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 
WGUS54 KJAN 182157
FFWJAN
MSC049-182355-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
456 PM CDT TUE MAY 18 2004

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

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

* UNTIL 655 PM CDT

* AT 456 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED            
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER DOWNTOWN              
  JACKSON...MOVING NORTH AT 5 MPH.

RADAR ESTIMATED RAINFALL AMOUNTS OF BETWEEN 1 AND 2 INCHES PER HOUR 
ARE FALLING OVER JACKSON. DUE TO THE SLOW MOVEMENT OF THESE 
STORMS...AN ADDITIONAL 1 TO 2 INCHES WILL BE POSSIBLE THROUGH 6 PM.

MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO
CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY.

LAT...LON 3220 9038 3220 9021 3240 9016 3247 9037

$$

2 follow-up statements

000 
WGUS74 KJAN 182250
FFSJAN
MSC049-182355-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
549 PM CDT TUE MAY 18 2004

FLASH FLOOD WARNING REMAINS IN EFFECT FOR...

HINDS COUNTY IN CENTRAL MISSISSIPPI UNTIL 655 PM

RAIN ALONG WITH A FEW THUNDERSTORMS CONTINUE OVER EASTERN AND 
NORTHEAST HINDS COUNTY. THE HEAVIEST RAIN HAS MOVED NORTH OF THE 
CITY HOWEVER...MODERATE RAIN WILL PERSIST THROUGH 610 PM. THERE ARE 
SEVERAL STREETS AND ROADS ACROSS PARTS OF THE CITY THAT ARE FLOODED 
OR HAVE STANDING WATER ON THEM...THUS THE FLASH FLOOD WARNING WILL 
REMAIN IN EFFECT UNTIL 655 PM. ONLY AN ADDITIONAL QUARTER INCH OF 
RAIN IS EXPECTED THROUGH 7 PM HOWEVER...RUN OFF FROM EARLIER RAIN 
WILL CONTINUE TO CAUSE FLOODING PROBLEMS.

$$

000 
WGUS74 KJAN 182315
FFSJAN
MSC049-182355-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
613 PM CDT TUE MAY 18 2004

FLASH FLOOD WARNING HAS BEEN CANCELLED FOR...

HINDS COUNTY IN CENTRAL MISSISSIPPI

THE THUNDERSTORMS THAT PRODUCED THE HEAVY RAIN AND AREA FLOODING 
HAVE DIMINISHED AND MOVED OUT OF THE AREA. THE THREAT OF FLASH 
FLOODING HAS ENDED...THUS THE FLASH FLOOD WARNING HAS BEEN CANCELLED.

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 17, 8:20 PM CDT	Severe Thunderstorm Warning	JAN	Oktibbeha	45 min
May 17, 8:49 PM CDT	Severe Thunderstorm Warning	JAN	Clay	46 min
May 18, 2:50 PM CDT	Severe Thunderstorm Warning	JAN	Simpson	30 min
May 18, 3:04 PM CDT	Severe Thunderstorm Warning	JAN	Simpson	16 min

Nearby

Flash Flood Warnings in Mississippi, 2004 Every flash flood warning in 2004

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.