Alert archive / Louisiana / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 16, NWS New Orleans, LA

March 27, 1987Assumption Parish, Saint James Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Mar 27, 1987, 8:16 AM CST for Assumption Parish, Saint James Parish, Louisiana. It was in force for 59 min.

The area

The counties it named.

The facts

Issued
Mar 27, 1987, 8:16 AM CST (14:16 UTC)
Expired
Mar 27, 1987, 9:15 AM CST
In force
59 min
Issued by
NWS New Orleans, LA
Area
Whole counties

Counties Assumption Parish, LA, Saint James Parish, LA

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Boothville, LA (KBVE), launched 12:00Z, 2.3 hours before the alert went out and 164 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, Boothville, LA at 12:00Z on 1987-03-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 126 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, Boothville, LA at 12:00Z on 1987-03-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 114 square meters per square second.1939587897117136Sfc1 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
126 J/kg
Mixed-layer CIN
-250 J/kg
Mixed-layer LCL
633 m above ground
0-6 km bulk shear
77 kt
0-1 km storm-relative helicity
114 m²/s²
0-3 km storm-relative helicity
203 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.7

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
Mar 27, 8:16 AM CSTSevere Thunderstorm WarningLIXSaint Charles, Saint John the Baptist59 min
Mar 27, 8:49 AM CSTSevere Thunderstorm WarningLIXSaint Tammany, Tangipahoa56 min
Mar 27, 12:26 PM CSTSevere Thunderstorm WarningLIXPlaquemines64 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1987Every severe thunderstorm warning in 1987

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.