Alert archive / Louisiana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 140, NWS New Orleans, LA

May 3, 1997Saint Tammany Parish, Louisiana; Pearl River County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at May 3, 1997, 4:14 AM CDT for Saint Tammany Parish, Louisiana; Pearl River County, Mississippi. 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
May 3, 1997, 4:14 AM CDT (09:14 UTC)
Expired
May 3, 1997, 5:00 AM CDT
In force
46 min
Issued by
NWS New Orleans, LA
Area
Whole counties

Counties Saint Tammany Parish, LA, Pearl River County, MS

The watch it was issued in

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

IssuedProductOfficeLasted
May 3, 2:00 AM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 9.2 hours before the alert went out and 38 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-pSkew-T log-p diagram, Slidell Radar S, LA at 00:00Z on 1997-05-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2040 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 1997-05-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 105 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
2040 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
786 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
105 m²/s²
0-3 km storm-relative helicity
168 m²/s²
Significant tornado parameter
0.9
Supercell composite
5.2

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
May 3, 1:30 AM CDTSevere Thunderstorm WarningLIXPointe Coupee, West Feliciana30 min
May 3, 2:37 AM CDTSevere Thunderstorm WarningLIXEast Baton Rouge38 min
May 3, 2:55 AM CDTSevere Thunderstorm WarningLIXSaint Helena35 min
May 3, 3:00 AM CDTSevere Thunderstorm WarningLIXLivingston30 min
May 3, 3:10 AM CDTTornado WarningLIXLivingston, Saint Helena, Tangipahoa35 min
May 3, 3:44 AM CDTSevere Thunderstorm WarningLIXSaint Tammany, Tangipahoa31 min
May 3, 4:50 AM CDTSevere Thunderstorm WarningLIXHancock40 min
May 3, 5:14 AM CDTSevere Thunderstorm WarningLIXHarrison61 min
May 3, 5:43 AM CDTSevere Thunderstorm WarningLIXHancock17 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1997Severe Thunderstorm Warnings in Mississippi, 1997Every 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.