Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 192, NWS New Orleans, LA

July 7, 1997Pointe Coupee Parish, West Feliciana Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Jul 7, 1997, 3:39 PM CDT for Pointe Coupee Parish, West Feliciana Parish, Louisiana. It was in force for 51 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: Jul 7, 1997, 3:39 PM CDT (20:39 UTC)
Expired: Jul 7, 1997, 4:30 PM CDT
In force: 51 min
Issued by: NWS New Orleans, LA
Area: Whole counties

Counties Pointe Coupee Parish, LA, West Feliciana Parish, LA

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 8.7 hours before the alert went out and 178 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: 2785 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 550 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 119 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KNEW 072039 RRA
SVRNEW
LAC077-125-072130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
339 PM CDT MON JUL 7 1997
 
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  430 PM CDT
FOR RESIDENTS IN THE FOLLOWING LOCATIONS...
 
IN SOUTHEAST LOUISIANA
 
   ...POINTE COUPEE PARISH...WEST FELICIANA PARISH
 
NATIONAL WEATHER SERVICE DOPPLER RADAR AT 335 PM CDT INDICATED A SEVERE
THUNDERSTORM DEVELOPING OVER EXTREME WESTERN POINTE COUPEE PARISH
BETWEEN MCCREA AND MELVILLE. THIS SEVERE THUNDERSTORM WAS MOVING EAST 10
TO 15 MPH. CITIES IN THE PATH OF THIS STORM ARE MORGANZA AND BATCHELOR.
 
THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND
DEADLY LIGHTNING.  PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 7, 11:00 AM CDT, 4 hours 39 minutes before

LAZ034>040-046>049-056>070-MSZ068>071-080>082-081200-

THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS/BATON ROUGE LA
1100 AM CDT MON JUL 7 1997

AFTERNOON SEABREEZE THUNDERSTORMS WILL BE THE PRIMARY CONCERN TODAY.
LOCAL DOWNBURST WINDS OF 35 TO 45 MPH ARE POSSIBLE WITH SOME OF THE
EARLIER DEVELOPING STORMS. OTHERWISE...BRIEF HEAVY RAINS OF 1 TO 2
INCHES PER HOUR AND LIGHTNING WILL BE THE PREDOMINANT STORM CONDITIONS
THROUGH SUNSET. SOME OF THE THUNDERSTORMS NEAR WATER MAY ALSO SPAWN A
WATERSPOUT OR TWO...MAINLY BEFORE 1 PM.

Special weather statement, Jul 7, 11:23 AM CDT, 4 hours 16 minutes before

LAZ034>040-046>049-056>070-MSZ068>071-080>082-081200-

THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS/BATON ROUGE LA
1100 AM CDT MON JUL 7 1997

AFTERNOON SEABREEZE THUNDERSTORMS WILL BE THE PRIMARY CONCERN TODAY.
LOCAL DOWNBURST WINDS OF 35 TO 45 MPH ARE POSSIBLE WITH SOME OF THE
EARLIER DEVELOPING STORMS. OTHERWISE...BRIEF HEAVY RAINS OF 1 TO 2
INCHES PER HOUR AND LIGHTNING WILL BE THE PREDOMINANT STORM CONDITIONS
THROUGH SUNSET. SOME OF THE THUNDERSTORMS NEAR WATER MAY ALSO SPAWN A
WATERSPOUT OR TWO...MAINLY BEFORE 1 PM.

Local storm report, Jul 7, 1:16 PM CDT, 2 hours 23 minutes before

PRELIMINARY LOCAL STORM REPORTS
NATIONAL WEATHER SERVICE NEW ORLEANS LA
115 PM CDT MON JUL  7 1997

TIME(CDT)  .....CITY LOCATION...... STATE ...EVENT/REMARKS...
           ....COUNTY LOCATION......

1215 PM    5 SE CHALMETTE            LA   FUNNEL CLOUDS
07/07/97   ST. BERNARD                    NUMEROUS REPORTS OF VISUAL
                                          OBSERVATIONS OF A FEW FUNNEL
                                          CLOUDS BETWEEN CHALMETTE AND
                                          VIOLET. UNDETERMINED IF THE
                                          FUNNELS EVER TOUCHED DOWN BUT
                                          WERE REPORTED TO EXTEND CLOSE
                                          TO THE GROUND AT 1220 PM.

1220 PM    LAKE SALVADOR             LA   FUNNEL CLOUD
07/07/97   ST. CHARLES                    POSSIBLE WATER SPOUT OBSERVED.
                                          RELAYED REPORT BY WDSU-TV6
                                          METEOROLOGIST.

0100 PM    VIOLET                    LA   FLOODING
07/07/97   ST. BERNARD                    FLOODING OF STREETS REPORTED
                                          BY VIOLET FIRE DEPARTMENT.

24

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 12:22 PM CDT	Tornado Warning	LIX	Saint Bernard	38 min
Jul 7, 12:27 PM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Saint Charles	33 min
Jul 7, 1:40 PM CDT	Flash Flood Warning	LIX	Orleans, Plaquemines, Saint Bernard	2 hr

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.