Alert archive / Mississippi / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 15, NWS New Orleans, LA

March 31, 2020Pearl River County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Mar 31, 2020, 8:33 AM CDT for Pearl River County, Mississippi. It was in force for 16 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
Mar 31, 2020, 8:33 AM CDT (13:33 UTC)
Expired
Mar 31, 2020, 8:49 AM CDT
In force
16 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

County Pearl River County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 1.6 hours before the alert went out and 59 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 2020-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 743 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 2020-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 299 square meters per square second.1939587897Sfc1 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
743 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
624 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
299 m²/s²
0-3 km storm-relative helicity
338 m²/s²
Significant tornado parameter
1.4
Supercell composite
7.9

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 31, 5:19 AM CDTSevere Thunderstorm WarningLIXEast Feliciana, West Feliciana26 min
Mar 31, 9:16 AM CDTSpecial Weather StatementLIXJefferson29 min
Mar 31, 10:53 AM CDTSpecial Marine WarningLIX52 min
Mar 31, 11:58 AM CDTRiver Flood WarningLIXJefferson, Orleans, Plaquemines, Saint Bernard23 days
Mar 31, 7:44 AM CDTSpecial Weather StatementLIXPearl River46 min
Mar 31, 8:27 AM CDTSpecial Weather StatementLIXPearl River18 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2020Every severe thunderstorm warning in 2020

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.