Alert archive / Mississippi / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 84, NWS New Orleans, LA

May 3, 2009Amite County, Wilkinson County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at May 3, 2009, 9:32 AM CDT for Amite County, Wilkinson County, Mississippi. It was in force for 58 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: May 3, 2009, 9:32 AM CDT (14:32 UTC)
Expired: May 3, 2009, 10:30 AM CDT
In force: 58 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
May 3, 7:44 AM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 2.5 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: 1741 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 484 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 200 m²/s²
0-3 km storm-relative helicity: 237 m²/s²
Significant tornado parameter: 2.4
Supercell composite: 9.4

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 May 3, 8:23 AM CDT, 1 hour 9 minutes earlier.

Area forecast discussion, May 3, 8:23 AM CDT, 1 hour 9 minutes before

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Hazardous weather outlook, May 3, 8:30 AM CDT, 1 hour 2 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
May 3, 4:28 PM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany	47 min
May 3, 5:31 PM CDT	Severe Thunderstorm Warning	LIX	Iberville	29 min
May 3, 5:56 PM CDT	Severe Thunderstorm Warning	LIX	Ascension, East Baton Rouge, Iberville, West Baton Rouge	34 min
May 3, 10:31 AM CDT	Severe Thunderstorm Warning	LIX	Amite, Pike	59 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2009 Every severe thunderstorm warning in 2009

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.