Alert archive / Mississippi / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 421, NWS Jackson, MS

July 17, 2000Claiborne County, Mississippi; Tensas Parish, Louisiana

NWS Jackson, MS issued this severe thunderstorm warning at Jul 17, 2000, 6:19 PM CDT for Claiborne County, Mississippi; Tensas Parish, Louisiana. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 17, 2000, 6:19 PM CDT (23:19 UTC)
Expired: Jul 17, 2000, 7:00 PM CDT
In force: 41 min
Issued by: NWS Jackson, MS
Area: Whole counties

Counties Tensas Parish, LA, Claiborne County, MS

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 17, 4:00 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 11.3 hours before the alert went out and 105 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: 3640 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 1213 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 197 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 
WUUS54 KJAN 172320
SVRJAN
LAC107-MSC021-180000-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
619 PM CDT MON JUL 17 2000

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  TENSAS PARISH IN NORTHEAST LOUISIANA
  CLAIBORNE COUNTY IN SOUTHWEST MISSISSIPPI

* UNTIL 700 PM CDT

* AT 619 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A SEVERE THUNDERSTORM 7 MILES WEST OF PORT GIBSON MOVING SOUTH AT 
  10 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  NEAR SAINT JOSEPH AT 630 PM CDT

DAMAGING WINDS AND TORRENTIAL RAINS ARE LIKELY. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS.

76

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT FOR 
THE WARNED AREA.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 7:15 PM CDT	Severe Thunderstorm Warning	JAN	Jasper, Neshoba, Newton	45 min
Jul 17, 1:38 PM CDT	Severe Thunderstorm Warning	JAN	Marion	37 min
Jul 17, 2:45 PM CDT	Severe Thunderstorm Warning	JAN	Leake	45 min
Jul 17, 3:06 PM CDT	Severe Thunderstorm Warning	JAN	Forrest	39 min
Jul 17, 3:35 PM CDT	Severe Thunderstorm Warning	JAN	Smith	40 min
Jul 17, 3:44 PM CDT	Severe Thunderstorm Warning	JAN	Scott	46 min
Jul 17, 4:10 PM CDT	Severe Thunderstorm Warning	JAN	Franklin, Jefferson, Lincoln	35 min
Jul 17, 4:16 PM CDT	Severe Thunderstorm Warning	JAN	Jasper	29 min
Jul 17, 4:25 PM CDT	Severe Thunderstorm Warning	JAN	Jones	35 min
Jul 17, 4:58 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Carroll, Holmes	47 min
Jul 17, 5:15 PM CDT	Severe Thunderstorm Warning	JAN	Copiah	45 min
Jul 17, 5:17 PM CDT	Severe Thunderstorm Warning	JAN	Adams, Franklin, Jefferson	43 min
Jul 17, 5:36 PM CDT	Severe Thunderstorm Warning	JAN	Claiborne	24 min
Jul 17, 5:47 PM CDT	Severe Thunderstorm Warning	JAN	Jasper	28 min
Jul 17, 5:54 PM CDT	Severe Thunderstorm Warning	JAN	Yazoo	36 min
Jul 17, 6:09 PM CDT	Severe Thunderstorm Warning	JAN	Grenada	36 min
Jul 17, 6:27 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Madison	33 min
Jul 17, 6:53 PM CDT	Severe Thunderstorm Warning	JAN	Warren, Yazoo	37 min
Jul 17, 5:32 PM CDT	Severe Thunderstorm Warning	JAN	Concordia	28 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2000 Severe Thunderstorm Warnings in Louisiana, 2000 Every severe thunderstorm 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.