Alert archive / Mississippi / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 41, NWS New Orleans, LA

February 10, 1998Pearl River County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Feb 10, 1998, 9:33 PM CST for Pearl River County, Mississippi. It was in force for 62 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: Feb 10, 1998, 9:33 PM CST (03:33 UTC)
Expired: Feb 10, 1998, 10:35 PM CST
In force: 62 min
Issued by: NWS New Orleans, LA
Area: Whole counties

County Pearl River 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
Feb 10, 4:45 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 3.6 hours before the alert went out and 59 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: 625 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 680 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: 399 m²/s²
0-3 km storm-relative helicity: 500 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 6.4

Open this sounding in Storm Lab

The text

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

735 
WUUS1 KNEW 110335 RRA
SVRNEW
MSC109-110435-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
933 PM CST TUE FEB 10 1998

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS LA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1035 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTHERN MISSISSIPPI

   ...PEARL RIVER COUNTY

AT 935 PM CST RADAR SHOWED A LINE OF NUMEROUS THUNDERSTORMS FROM
JUST EAST OF FRANKLINTON SOUTH TO LAKE PONTCHARTRAIN MOVING EAST AT
35 MILES AN HOUR.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 10, 7:16 PM CST	Severe Thunderstorm Warning	LIX	Amite, Wilkinson	64 min
Feb 10, 8:27 PM CST	Severe Thunderstorm Warning	LIX	Pike, Walthall	63 min
Feb 10, 9:49 PM CST	Severe Thunderstorm Warning	LIX	Hancock	66 min
Feb 10, 10:28 PM CST	Severe Thunderstorm Warning	LIX	Harrison, Jackson	62 min
Feb 10, 11:26 PM CST	Severe Thunderstorm Warning	LIX	Jackson	59 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.