Alert archive / Mississippi / Flash Flood Warnings in 2000

Flash Flood Warning 17, NWS Jackson, MS

July 21, 2000Forrest County, Mississippi

NWS Jackson, MS issued this flash flood warning at Jul 21, 2000, 4:36 PM CDT for Forrest County, Mississippi. It was in force for 84 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Jul 21, 2000, 4:36 PM CDT (21:36 UTC)
Expired: Jul 21, 2000, 6:00 PM CDT
In force: 84 min
Issued by: NWS Jackson, MS
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Forrest County, MS

The radar

The Mobile radar (KMOB), 101 km from the middle of the area, began a volume at 21:37 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 9.6 hours before the alert went out and 135 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: 2208 J/kg
Mixed-layer CIN: -123 J/kg
Mixed-layer LCL: 1308 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KJAN 212139 COR
FFWJAN
MSC035-212300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
436 PM CDT FRI JUL 21 2000

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  FORREST COUNTY IN SOUTHEAST MISSISSIPPI

* UNTIL 600 PM CDT

* AT 436 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
  RAIN OVER FORREST COUNTY...MAINLY IN THE HATTIESBURG AREA NORTH...
  MOVI1NG SLOWLY EAST. RADAR ESTIMATES OF 2.50" TO 3.00 INCHES PER HOUR 
  ARE INDICATED.

62

LAT...LON 3126 8927 3110 8916 3135 8858 3158 8875

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 7:14 PM CDT	Severe Thunderstorm Warning	JAN	Franklin, Lincoln	46 min
Jul 20, 7:31 PM CDT	Severe Thunderstorm Warning	JAN	Jones	29 min
Jul 20, 10:02 PM CDT	Severe Thunderstorm Warning	JAN	Lamar	28 min
Jul 21, 1:35 PM CDT	Severe Thunderstorm Warning	JAN	Lincoln	25 min
Jul 21, 1:58 PM CDT	Severe Thunderstorm Warning	JAN	Marion	32 min
Jul 21, 2:23 PM CDT	Severe Thunderstorm Warning	JAN	Lawrence	37 min
Jul 21, 2:54 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson	36 min
Jul 21, 3:55 PM CDT	Severe Thunderstorm Warning	JAN	Forrest	35 min
Jul 21, 4:02 PM CDT	Severe Thunderstorm Warning	JAN	Franklin, Jefferson	28 min
Jul 21, 4:21 PM CDT	Severe Thunderstorm Warning	JAN	Lincoln	24 min
Jul 21, 4:30 PM CDT	Severe Thunderstorm Warning	JAN	Forrest	30 min
Jul 21, 4:53 PM CDT	Severe Thunderstorm Warning	JAN	Copiah	37 min
Jul 21, 5:29 PM CDT	Severe Thunderstorm Warning	JAN	Copiah	31 min
Jul 21, 5:58 PM CDT	Severe Thunderstorm Warning	JAN	Copiah, Simpson	47 min

Nearby

Flash Flood Warnings in Mississippi, 2000 Every flash flood warning in 2000

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.