Alert archive / Mississippi / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 151, NWS New Orleans, LA

December 11, 2010Amite County, Wilkinson County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Dec 11, 2010, 6:33 PM CST for Amite County, Wilkinson County, Mississippi. It was in force for 57 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: Dec 11, 2010, 6:33 PM CST (00:33 UTC)
Expired: Dec 11, 2010, 7:30 PM CST
In force: 57 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon

Counties Amite County, MS, Wilkinson County, MS

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Dec 11, 3:18 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 0.6 hours before the alert went out and 158 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 85 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 941 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 547 m²/s²
0-3 km storm-relative helicity: 574 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

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.

NWS New Orleans, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Dec 11, 4:22 PM CST, 2 hours 11 minutes earlier.

Area forecast discussion, Dec 11, 4:22 PM CST, 2 hours 11 minutes before

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Hazardous weather outlook, Dec 11, 4:43 PM CST, 1 hour 50 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 11, 9:23 PM CST	Special Marine Warning	LIX		67 min
Dec 11, 10:11 PM CST	Special Marine Warning	LIX		64 min
Dec 11, 10:45 PM CST	Special Marine Warning	LIX		60 min
Dec 12, 12:21 AM CST	Special Marine Warning	LIX		39 min
Dec 12, 3:35 AM CST	Small Craft Advisory	LIX		38 hr
Dec 12, 5:37 AM CST	Freeze Watch	LIX	Saint Bernard	23 hr
Dec 12, 5:37 AM CST	Freeze Warning	LIX	Assumption, Saint Bernard, Saint James, Saint John the Baptist	27 hr
Dec 12, 5:37 AM CST	Hard Freeze Watch	LIX	Assumption, East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, Saint Bernard and 6 more	23 hr
Dec 12, 5:37 AM CST	Hard Freeze Warning	LIX	East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, Saint Helena, Washington and 2 more	27 hr
Dec 11, 7:22 PM CST	Severe Thunderstorm Warning	LIX	Amite, Pike	53 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2010 Every severe thunderstorm warning in 2010

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.