Alert archive / Mississippi / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 138, NWS New Orleans, LA

August 10, 2015Amite County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Aug 10, 2015, 5:14 PM CDT for Amite 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
Aug 10, 2015, 5:14 PM CDT (22:14 UTC)
Expired
Aug 10, 2015, 6:00 PM CDT
In force
46 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon

County Amite County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 10.2 hours before the alert went out and 145 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, Jackson, MS at 12:00Z on 2015-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1784 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, Jackson, MS at 12:00Z on 2015-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 square meters per square second.1939Sfc1 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
1784 J/kg
Mixed-layer CIN
-135 J/kg
Mixed-layer LCL
1140 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
56 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.4

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 7:43 PM CDTSpecial Marine WarningLIX62 min
Aug 10, 4:13 AM CDTExcessive Heat WarningLIXAssumption, East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, Saint Bernard and 7 more15 hr
Aug 10, 1:54 PM CDTSpecial Weather StatementLIXTerrebonne36 min
Aug 10, 2:19 PM CDTSpecial Weather StatementLIXTerrebonne56 min
Aug 10, 3:15 PM CDTSpecial Marine WarningLIX45 min
Aug 10, 3:47 PM CDTSpecial Weather StatementLIXPointe Coupee, West Feliciana28 min
Aug 10, 3:57 PM CDTHeat AdvisoryLIXAssumption, East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, Saint Bernard and 7 more27 hr
Aug 10, 4:37 PM CDTSpecial Weather StatementLIXWest Feliciana53 min
Aug 10, 5:20 PM CDTSpecial Weather StatementLIXWest Baton Rouge25 min
Aug 9, 7:46 PM CDTSpecial Weather StatementLIXJackson29 min
Aug 10, 4:47 PM CDTSpecial Weather StatementLIXAmite58 min
Aug 10, 6:33 PM CDTSpecial Weather StatementLIXPike, Walthall57 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2015Every severe thunderstorm warning in 2015

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.