Alert archive / Mississippi / Special Weather Statements in 2015

Special Weather Statement, NWS New Orleans, LA

August 11, 2015Amite County, Pike County, Walthall County, Mississippi

NWS New Orleans, LA issued this special weather statement at Aug 11, 2015, 6:49 AM CDT for Amite County, Pike County, Walthall County, Mississippi. It was in force for 56 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 11, 2015, 6:49 AM CDT (11:49 UTC)
Expired
Aug 11, 2015, 7:45 AM CDT
In force
56 min
Issued by
NWS New Orleans, LA

Counties Amite County, MS, Pike County, MS, Walthall County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 11.8 hours before the alert went out and 124 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 00:00Z on 2015-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 897 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 00:00Z on 2015-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 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
897 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
1953 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
74 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 11, 7:43 AM CDTSpecial Weather StatementLIXSaint Helena, Washington47 min
Aug 11, 8:57 AM CDTSpecial Weather StatementLIXEast Feliciana63 min
Aug 11, 10:36 AM CDTSpecial Weather StatementLIXEast Feliciana, West Feliciana54 min
Aug 11, 4:28 PM CDTSpecial Marine WarningLIX47 min

Nearby

Special Weather Statements in Mississippi, 2015Every special weather statement 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.