Alert archive / Mississippi / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 331, NWS Jackson, MS

May 5, 2000Smith County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at May 5, 2000, 2:59 PM CDT for Smith County, Mississippi. It was in force for 31 min. 1 report came from 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, with what was reported inside it.

The facts

Issued: May 5, 2000, 2:59 PM CDT (19:59 UTC)
Expired: May 5, 2000, 3:30 PM CDT
In force: 31 min
Issued by: NWS Jackson, MS
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Smith County, MS

What was reported inside it

Time	Report	Where	Remark
May 5, 3:15 PM CDT	Thunderstorm Wind	Polkville, MS	A few trees were blown down.

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 12:00Z, 8.0 hours before the alert went out and 46 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: 685 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 658 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 54 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KJAN 052000 COR
SVRJAN
MSC129-052030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTED TYPE OF WARNING
NATIONAL WEATHER SERVICE JACKSON MS
259 PM CDT FRI MAY 5 2000

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SMITH COUNTY IN CENTRAL MISSISSIPPI

* UNTIL 330 PM CDT

* AT 258 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 8 MILES SOUTH OF POLKVILLE...OR ABOUT 14 MILES
  NORTHEAST OF MENDENHALL...MOVING NORTH AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  NEAR POLKVILLE AT 315 PM CDT

THIS STORM WILL LIKELY PRODUCE DAMAGING WINDS. QUARTER TO HALF 
DOLLAR SIZED HAIL IS ALSO LIKELY WITH THIS STORM.

LAT...LON 3207 8973 3198 8960 3221 8951 3223 8972

76

The office that day

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

Issued	Product	Office	Counties	Lasted
May 5, 2:03 PM CDT	Severe Thunderstorm Warning	JAN	Lamar, Marion	27 min
May 5, 2:12 PM CDT	Severe Thunderstorm Warning	JAN	Smith	48 min
May 5, 2:44 PM CDT	Severe Thunderstorm Warning	JAN	Simpson	31 min
May 5, 3:14 PM CDT	Severe Thunderstorm Warning	JAN	Rankin	46 min
May 5, 3:27 PM CDT	Severe Thunderstorm Warning	JAN	Scott	48 min
May 5, 3:37 PM CDT	Severe Thunderstorm Warning	JAN	Leake	38 min
May 5, 4:41 PM CDT	Severe Thunderstorm Warning	JAN	Winston	39 min
May 5, 4:48 PM CDT	Severe Thunderstorm Warning	JAN	Attala	42 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.