Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 21, NWS New Orleans, LA

January 24, 1997Orleans Parish, Saint Bernard Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Jan 24, 1997, 11:44 AM CST for Orleans Parish, Saint Bernard Parish, Louisiana. It was in force for 46 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: Jan 24, 1997, 11:44 AM CST (17:44 UTC)
Expired: Jan 24, 1997, 12:30 PM CST
In force: 46 min
Issued by: NWS New Orleans, LA
Area: Whole counties

Counties Orleans Parish, LA, Saint Bernard Parish, LA

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 5.7 hours before the alert went out and 262 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: 543 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 578 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 330 m²/s²
0-3 km storm-relative helicity: 342 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 4.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KNEW 241746 RRA
SVRNEW
LAC071-087-LAZ501-241830-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1144 AM CST FRI JAN 24 1997
 
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
EFFECTIVE UNTIL 1230 PM CST
FOR RESIDENTS IN THE FOLLOWING LOCATIONS...
 
IN SOUTHEAST LOUISIANA
 
   ...EASTERN ORLEANS PARISH...NORTHERN ST. BERNARD PARISH
 
  AND FOR MARINE INTERESTS IN THE COASTAL WATERS AROUND...
 
  ...LAKE PONTCHARTRAIN AND LAKE BORGNE
 
AT 1145 AM CST RADAR INDICATED A SEVERE THUNDERSTORM JUST EAST OF THE
CENTRAL BUSINESS DISTRICT AND NORTH OF CHALMETTE WAS MOVING EAST
NORTHEAST AT 35 MPH. THIS THUNDERSTORM WILL MOVE THROUGH EASTERN
NEW ORLEANS AND ADJACENT PORTION OF ST. BERNARD PARISH...LAKE
PONTCHARTRAIN AND LAKE BORGNE.
 
THIS THUNDERSTORM PRODUCED MARBLE SIZED HAIL NEAR CITY PARK IN
NEW ORLEANS AT 1125 AM.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
 
 
&

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 24, 4:22 AM CST	Severe Thunderstorm Warning	LIX	Washington	68 min
Jan 24, 4:35 AM CST	Severe Thunderstorm Warning	LIX	Saint Tammany	55 min
Jan 24, 4:43 AM CST	Severe Thunderstorm Warning	LIX	Lafourche, Terrebonne	62 min
Jan 24, 6:21 AM CST	Severe Thunderstorm Warning	LIX	Plaquemines, Saint Bernard	69 min
Jan 24, 6:59 AM CST	Severe Thunderstorm Warning	LIX	Lafourche, Terrebonne	61 min
Jan 24, 8:17 AM CST	Severe Thunderstorm Warning	LIX	Jefferson, Plaquemines, Saint Bernard	58 min
Jan 24, 8:17 AM CST	Severe Thunderstorm Warning	LIX	Lafourche	58 min
Jan 24, 10:38 AM CST	Severe Thunderstorm Warning	LIX	Saint Charles	37 min
Jan 24, 11:05 AM CST	Severe Thunderstorm Warning	LIX	Jefferson, Orleans	40 min
Jan 24, 12:14 PM CST	Severe Thunderstorm Warning	LIX	Jefferson, Saint Charles	46 min
Jan 24, 12:40 PM CST	Severe Thunderstorm Warning	LIX	Orleans	65 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1997 Every severe thunderstorm warning 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.