Alert archive / Mississippi / Tornado Warnings in 1997

Tornado Warning 23, NWS New Orleans, LA

November 21, 1997Harrison County, Jackson County, Mississippi

NWS New Orleans, LA issued this tornado warning at Nov 21, 1997, 3:46 PM CST for Harrison County, Jackson County, Mississippi. It was in force for 44 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: Nov 21, 1997, 3:46 PM CST (21:46 UTC)
Expired: Nov 21, 1997, 4:30 PM CST
In force: 44 min
Issued by: NWS New Orleans, LA
Area: Whole counties

Counties Harrison County, MS, Jackson County, MS

The radar

The Mobile radar (KMOB), 64 km from the middle of the area, began a volume at 21:48 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

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

Issued	Product	Office	Lasted
Nov 21, 11:15 AM CST	Tornado Watch	SPC	6 hr
Nov 21, 2:30 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 9.8 hours before the alert went out and 84 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: 20 J/kg
Mixed-layer CIN: -114 J/kg
Mixed-layer LCL: 981 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 192 m²/s²
0-3 km storm-relative helicity: 207 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.

000 
TTAA00 KNEW 212146 RRA
TORNEW
MSC047-059-212230-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
346 PM CST FRI NOV 21 1997
 
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  430 PM CST
FOR RESIDENTS IN THE FOLLOWING LOCATIONS...
 
IN SOUTH MISSISSIPPI
 
   ...NORTHERN HARRISON COUNTY...NORTHERN JACKSON COUNTY
 
AND THE ADJACENT COASTAL WATERS
 
 
AT 340 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM PRODUCING A POSSIBLE TORNADO OVER
NORTHERN HARRISON COUNTY...NEAR LIZANA AND SAUCIER...MOVING EAST AT
40 MILES AN HOUR. OTHER COMMUNITIES IN THE PATH OF THIS STORM INCLUDE
SUCCESS...LARUE AND LATIMER.
 
 
THIS IS A DANGEROUS STORM SITUATION.  ACT QUICKLY.  IF YOU ARE
IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF
AVAILABLE.  OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR POSSIBLE.  AVOID WINDOWS.  ABANFDON CARS AND MOBILE HOMES
FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT.

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 21, 7:45 AM CST	Severe Thunderstorm Warning	LIX	Wilkinson	30 min
Nov 21, 12:12 PM CST	Severe Thunderstorm Warning	LIX	Walthall	48 min
Nov 21, 1:56 PM CST	Tornado Warning	LIX	Hancock, Pearl River	49 min
Nov 21, 2:43 PM CST	Tornado Warning	LIX	Hancock, Harrison	62 min
Nov 21, 3:00 PM CST	Severe Thunderstorm Warning	LIX	Pearl River	30 min
Nov 21, 4:38 PM CST	Severe Thunderstorm Warning	LIX	Jackson	52 min

Nearby

Tornado Warnings in Mississippi, 1997 Every tornado warning in 1997 Tornadoes in 1997

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; radar from the NEXRAD Level II archive.