Alert archive / Louisiana / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 183, NWS New Orleans, LA

May 4, 1995Saint Tammany Parish, Washington Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at May 4, 1995, 1:59 PM CDT for Saint Tammany Parish, Washington Parish, Louisiana. It was in force for 61 min.

The area

The counties it named.

The facts

Issued
May 4, 1995, 1:59 PM CDT (18:59 UTC)
Expired
May 4, 1995, 3:00 PM CDT
In force
61 min
Issued by
NWS New Orleans, LA
Area
Whole counties

Counties Saint Tammany Parish, LA, Washington Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 7.0 hours before the alert went out and 51 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 12:00Z on 1995-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 814 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 12:00Z on 1995-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 203 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
814 J/kg
Mixed-layer CIN
-89 J/kg
Mixed-layer LCL
639 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
203 m²/s²
0-3 km storm-relative helicity
291 m²/s²
Significant tornado parameter
0.6
Supercell composite
2.2

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.

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

Local storm report, May 4, 1:22 PM CDT, 37 minutes before
PRELIMINARY LOCAL STORM REPORTS
NATIONAL WEATHER SERVICE NEW ORLEANS LA
119 PM CDT THU MAY  4 1995

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

0112 PM    GREENSBURG                LA   1 INCH DIAMETER HAIL
05/04/95   ST. HELENA                     REPORTED BY S.O. WSR-88D VIL
                                          70 KG/M2

RJR

The office that day

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

IssuedProductOfficeCountiesLasted
May 4, 1:05 PM CDTSevere Thunderstorm WarningLIXSaint Helena, Tangipahoa55 min
May 4, 1:56 PM CDTSevere Thunderstorm WarningLIXTangipahoa34 min
May 4, 2:12 PM CDTSevere Thunderstorm WarningLIXEast Baton Rouge, East Feliciana63 min
May 4, 2:53 PM CDTSevere Thunderstorm WarningLIXSaint Tammany67 min
May 4, 3:14 PM CDTSevere Thunderstorm WarningLIXLivingston61 min
May 4, 4:42 PM CDTSevere Thunderstorm WarningLIXOrleans, Saint Bernard63 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1995Every severe thunderstorm warning in 1995

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.