Alert archive / Mississippi / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 439, NWS Jackson, MS

July 1, 1998Leflore County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jul 1, 1998, 4:37 PM CDT for Leflore County, Mississippi. It was in force for 33 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 1, 1998, 4:37 PM CDT (21:37 UTC)
Expired: Jul 1, 1998, 5:10 PM CDT
In force: 33 min
Issued by: NWS Jackson, MS
Area: Whole counties

County Leflore County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 9.6 hours before the alert went out and 138 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: 2507 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 759 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: 3 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Jul 1, 2:54 PM CDT, 1 hour 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
254 PM CDT WED JUL 01 1998

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....PARISH/COUNTY LOCATION....

0225 PM    2 NE PETAL                MS   .88 INCH HAIL
07/01/98   FORREST                        REPORTED BY EOC

0246 PM    BASSFIELD                 MS   1 INCH HAIL
07/01/98   JEFFERSON DAVIS                REPORTED BY POLICE DEPT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 2:20 PM CDT	Severe Thunderstorm Warning	JAN	Forrest	35 min
Jul 1, 2:36 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis	34 min
Jul 1, 3:42 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar, Washington	48 min
Jul 1, 4:06 PM CDT	Severe Thunderstorm Warning	JAN	Humphreys, Sunflower	49 min
Jul 1, 4:51 PM CDT	Severe Thunderstorm Warning	JAN	Holmes	49 min
Jul 1, 5:32 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Holmes	48 min
Jul 1, 5:56 PM CDT	Severe Thunderstorm Warning	JAN	Leake	49 min
Jul 1, 6:07 PM CDT	Severe Thunderstorm Warning	JAN	Scott	48 min
Jul 1, 6:15 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Rankin	50 min
Jul 1, 3:05 PM CDT	Severe Thunderstorm Warning	JAN	Morehouse	35 min
Jul 1, 3:35 PM CDT	Severe Thunderstorm Warning	JAN	Richland, West Carroll	50 min
Jul 1, 3:59 PM CDT	Severe Thunderstorm Warning	JAN	East Carroll, Madison	46 min
Jul 1, 4:30 PM CDT	Severe Thunderstorm Warning	JAN	Richland	45 min
Jul 1, 4:48 PM CDT	Severe Thunderstorm Warning	JAN	Madison	47 min
Jul 1, 2:40 PM CDT	Severe Thunderstorm Warning	JAN	Ashley	35 min
Jul 1, 3:00 PM CDT	Severe Thunderstorm Warning	JAN	Chicot	35 min
Jul 1, 3:32 PM CDT	Severe Thunderstorm Warning	JAN	Chicot	33 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1998 Every severe thunderstorm warning in 1998

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.