Alert archive / Mississippi / Flash Flood Warnings in 2004

Flash Flood Warning 76, NWS Jackson, MS

July 16, 2004Grenada County, Mississippi

NWS Jackson, MS issued this flash flood warning at Jul 16, 2004, 11:03 AM CDT for Grenada 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 outline as issued.

The facts

Issued: Jul 16, 2004, 11:03 AM CDT (16:03 UTC)
Expired: Jul 16, 2004, 1:05 PM CDT
In force: 2 hr
Issued by: NWS Jackson, MS
Area: Counties, with a storm outline in the text

County Grenada County, MS

The radar

The Columbus AFB radar (KGWX), 141 km from the middle of the area, began a volume at 16:03 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

Little Rock, AR (KLZK), launched 12:00Z, 4.1 hours before the alert went out and 115 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: 2689 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 935 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 31 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.9

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KJAN 161604
FFWJAN
MSC043-161805-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1103 AM CDT FRI JUL 16 2004

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GRENADA COUNTY IN NORTH CENTRAL MISSISSIPPI

* UNTIL 105 PM CDT

* AT 1103 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN 6 MILES NORTHEAST OF
  HOLCOMB...OR ABOUT 7 MILES NORTHWEST OF GRENADA...MOVING SOUTHEAST
  AT 15 MPH.

RADAR ESTIMATED RAINFALL AMOUNTS OF NEAR 2 INCHES PER HOUR ARE 
FALLING FROM THIS STORM. THIS VERY HEAVY RAIN...IN A SHORT AMOUNT OF 
TIME...WILL CAUSE AREA STREETS AND ROADS TO FLOOD.

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 3382 8993 3381 9006 3372 9004 3370 8952
      3384 8954 3388 8991

$$

1 follow-up statement

000 
WGUS74 KJAN 161706
FFSJAN
MSC043-161805-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1204 PM CDT FRI JUL 16 2004

FLASH FLOOD WARNING HAS BEEN CANCELLED FOR...

GRENADA COUNTY IN NORTH CENTRAL MISSISSIPPI

AT 1204 PM DOPPLER RADAR INDICATED THAT THE THUNDERSTORMS WITH THE 
HEAVY RAINS HAD MOVED SOUTHEAST OF GRENADA COUNTY. THEREFORE THE RISK
OF FUTURE LOCALIZED FLOODING HAS DIMINISHED.

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 7:39 PM CDT	Flash Flood Warning	JAN	Issaquena	2 hr
Jul 16, 10:07 AM CDT	Severe Thunderstorm Warning	JAN	Attala, Holmes	28 min
Jul 16, 11:13 AM CDT	Severe Thunderstorm Warning	JAN	Neshoba	42 min
Jul 16, 11:34 AM CDT	Severe Thunderstorm Warning	JAN	Montgomery	61 min
Jul 16, 11:40 AM CDT	Flash Flood Warning	JAN	Montgomery	2 hr
Jul 16, 11:57 AM CDT	Flash Flood Warning	JAN	Forrest, Lamar	118 min
Jul 16, 12:00 PM CDT	Severe Thunderstorm Warning	JAN	Forrest	45 min
Jul 16, 12:06 PM CDT	Severe Thunderstorm Warning	JAN	Webster	44 min
Jul 16, 12:24 PM CDT	Severe Thunderstorm Warning	JAN	Choctaw	46 min
Jul 16, 12:32 PM CDT	Severe Thunderstorm Warning	JAN	Jasper	43 min
Jul 16, 12:32 PM CDT	Severe Thunderstorm Warning	JAN	Clarke	68 min
Jul 16, 12:33 PM CDT	Severe Thunderstorm Warning	JAN	Winston	47 min
Jul 16, 12:40 PM CDT	Severe Thunderstorm Warning	JAN	Lamar	30 min
Jul 16, 12:44 PM CDT	Severe Thunderstorm Warning	JAN	Oktibbeha	51 min
Jul 16, 2:14 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jones	41 min
Jul 16, 2:54 PM CDT	Severe Thunderstorm Warning	JAN	Jasper, Smith	61 min
Jul 16, 3:01 PM CDT	Severe Thunderstorm Warning	JAN	Rankin	59 min
Jul 16, 3:46 PM CDT	Severe Thunderstorm Warning	JAN	Simpson	44 min
Jul 16, 4:31 PM CDT	Severe Thunderstorm Warning	JAN	Hinds	44 min
Jul 16, 4:48 PM CDT	Severe Thunderstorm Warning	JAN	Madison	47 min
Jul 16, 5:24 PM CDT	Severe Thunderstorm Warning	JAN	Lamar	61 min
Jul 16, 5:27 PM CDT	Severe Thunderstorm Warning	JAN	Rankin	58 min
Jul 16, 5:54 PM CDT	Severe Thunderstorm Warning	JAN	Copiah	46 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.