Alert archive / Mississippi / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 201, NWS Jackson, MS

April 27, 1998Sunflower County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Apr 27, 1998, 7:23 PM CDT for Sunflower County, Mississippi. It was in force for 47 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: Apr 27, 1998, 7:23 PM CDT (00:23 UTC)
Expired: Apr 27, 1998, 8:10 PM CDT
In force: 47 min
Issued by: NWS Jackson, MS
Area: Whole counties

County Sunflower County, MS

What was reported inside it

Time	Report	Where	Remark
Apr 27, 7:55 PM CDT	Hail 1.25	Ruleville, MS

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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 27, 3:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 0.4 hours before the alert went out and 149 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: 21 J/kg
Mixed-layer CIN: -141 J/kg
Mixed-layer LCL: 1140 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: -65 m²/s²
0-3 km storm-relative helicity: 26 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.

599 
WUUS1 KJAN 280025 RRA
SVRJAN
MSC133-280110-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
723 PM CDT MON APR 27 1998

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SUNFLOWER COUNTY IN NORTHWESTERN MISSISSIPPI

* UNTIL 810 PM CDT

* AT 721 PM CDT... A SEVERE THUNDERSTORM 11 MILES NORTH OF
  INDIANOLA OR 11 MILES NORTHWEST OF SUNFLOWER... INDICATED BY
  DOPPLER RADAR... MOVING NORTHEAST 35 MPH.

* SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE...
  SUNFLOWER                   BY 730 PM CDT
  RULEVILLE                   BY 740 PM CDT
  DREW                        BY 745 PM CDT

SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING. GO INSIDE A STURDY BUILDING AND
STAY AWAY FROM WINDOWS

76

IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A
STORM APPROACHES.  MOTORISTS SHOULD REMAIN ALERT FOR REDUCED
VISIBILITIES DURING DOWNPOURS OF RAIN.  STREETS MAY FLOOD QUICKLY.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 7:47 PM CDT	Tornado Warning	JAN	Sunflower	33 min
Apr 27, 8:12 PM CDT	Severe Thunderstorm Warning	JAN	Leflore	48 min
Apr 28, 12:20 AM CDT	Severe Thunderstorm Warning	JAN	Adams	45 min
Apr 28, 12:30 AM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Jefferson	45 min
Apr 28, 12:49 AM CDT	Severe Thunderstorm Warning	JAN	Warren	46 min
Apr 28, 1:12 AM CDT	Severe Thunderstorm Warning	JAN	Hinds	48 min
Apr 28, 1:46 AM CDT	Tornado Warning	JAN	Hinds	34 min
Apr 28, 1:55 AM CDT	Tornado Warning	JAN	Madison	35 min
Apr 28, 2:16 AM CDT	Severe Thunderstorm Warning	JAN	Madison	34 min
Apr 28, 3:24 AM CDT	Severe Thunderstorm Warning	JAN	Marion	46 min
Apr 28, 4:04 AM CDT	Severe Thunderstorm Warning	JAN	Lamar	51 min
Apr 28, 4:22 AM CDT	Severe Thunderstorm Warning	JAN	Forrest	48 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.