Alert archive / Mississippi / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 503, NWS Jackson, MS

July 12, 1998Hinds County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jul 12, 1998, 5:35 PM CDT for Hinds County, Mississippi. It was in force for 35 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 12, 1998, 5:35 PM CDT (22:35 UTC)
Expired: Jul 12, 1998, 6:10 PM CDT
In force: 35 min
Issued by: NWS Jackson, MS
Area: Whole counties

County Hinds County, MS

What was reported inside it

Time	Report	Where	Remark
Jul 12, 5:45 PM CDT	Thunderstorm Wind	Jackson, MS	Several 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, 10.6 hours before the alert went out and 35 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: 173 J/kg
Mixed-layer CIN: -212 J/kg
Mixed-layer LCL: 1001 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -21 m²/s²
0-3 km storm-relative helicity: 99 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.

929 
WUUS1 KJAN 122234 RRA
SVRJAN
MSC049-122310-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
535 PM CDT SUN JUL 12 1998

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN HINDS COUNTY IN CENTRAL MISSISSIPPI

* UNTIL 610 PM CDT

* AT 534 PM CDT... RADAR INDICATED A SEVERE THUNDERSTORM 14 MILES
  WEST OF JACKSON OR IN THE VICINITY OF RAYMOND MOVING SOUTHEAST AT
  10 MPH.

* THE FOLLOWING LOCATION IS IN THE PATH OF THIS STORM...
  RAYMOND                     BY 543 PM CDT

DAMAGING WINDS AND HEAVY RAIN ARE LIKELY. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS

75

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 11, 7:28 PM CDT	Severe Thunderstorm Warning	JAN	Washington	32 min
Jul 11, 7:46 PM CDT	Severe Thunderstorm Warning	JAN	Issaquena	34 min
Jul 12, 4:08 PM CDT	Severe Thunderstorm Warning	JAN	Warren	47 min
Jul 12, 4:35 PM CDT	Severe Thunderstorm Warning	JAN	Hinds	35 min
Jul 12, 4:46 PM CDT	Severe Thunderstorm Warning	JAN	Rankin, Scott	49 min
Jul 12, 5:26 PM CDT	Severe Thunderstorm Warning	JAN	Smith	49 min
Jul 12, 6:05 PM CDT	Severe Thunderstorm Warning	JAN	Hinds	35 min
Jul 12, 6:26 PM CDT	Flash Flood Warning	JAN	Hinds	2 hr

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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.