Alert archive / Louisiana / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 90, NWS New Orleans, LA

June 4, 2010Iberville Parish, Pointe Coupee Parish, West Baton Rouge Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Jun 4, 2010, 8:31 AM CDT for Iberville Parish, Pointe Coupee Parish, West Baton Rouge Parish, Louisiana. It was in force for 59 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
Jun 4, 2010, 8:31 AM CDT (13:31 UTC)
Expired
Jun 4, 2010, 9:30 AM CDT
In force
59 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon

Counties Iberville Parish, LA, Pointe Coupee Parish, LA, West Baton Rouge Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 1.5 hours before the alert went out and 167 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 2010-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1565 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 2010-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 square meters per square second.19395878Sfc1 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
1565 J/kg
Mixed-layer CIN
-64 J/kg
Mixed-layer LCL
706 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
137 m²/s²
Significant tornado parameter
0.5
Supercell composite
4.4

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 Jun 4, 7:03 AM CDT, 1 hour 28 minutes earlier.

Area forecast discussion, Jun 4, 7:03 AM CDT, 1 hour 28 minutes before
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Hazardous weather outlook, Jun 4, 2:48 AM CDT, 5 hours 43 minutes before
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In the hours before

Special weather statement, Jun 4, 7:19 AM CDT, 1 hour 12 minutes before
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Local storm report, Jun 4, 8:10 AM CDT, 21 minutes before
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Special weather statement, Jun 4, 8:12 AM CDT, 19 minutes before
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Special weather statement, Jun 4, 8:26 AM CDT, 5 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 3, 7:06 PM CDTAreal Flood AdvisoryLIXSaint Tammany114 min
Jun 3, 7:20 PM CDTSpecial Marine WarningLIX25 min
Jun 3, 7:20 PM CDTTornado WarningLIXSaint Tammany32 min
Jun 3, 7:27 PM CDTFlash Flood WarningLIXSaint Tammany3 hr
Jun 3, 8:05 PM CDTSpecial Marine WarningLIX31 min
Jun 3, 8:27 PM CDTSpecial Marine WarningLIX48 min
Jun 3, 9:26 PM CDTSpecial Marine WarningLIX49 min
Jun 3, 10:15 PM CDTSpecial Marine WarningLIX45 min
Jun 4, 2:52 AM CDTSmall Craft AdvisoryLIX19 hr
Jun 4, 7:37 AM CDTSpecial Marine WarningLIX38 min
Jun 4, 8:38 AM CDTSpecial Marine WarningLIX52 min
Jun 4, 9:26 AM CDTSpecial Marine WarningLIX79 min
Jun 4, 10:59 AM CDTSpecial Marine WarningLIX91 min
Jun 4, 11:06 AM CDTAreal Flood AdvisoryLIXAscension, East Baton Rouge, Iberville, Livingston, Saint James, West Baton Rouge2 hr
Jun 4, 12:21 PM CDTSpecial Marine WarningLIX54 min
Jun 4, 1:38 PM CDTSpecial Marine WarningLIX67 min
Jun 4, 2:03 PM CDTSevere Thunderstorm WarningLIXJefferson, Orleans27 min
Jun 4, 2:25 PM CDTSpecial Marine WarningLIX35 min
Jun 4, 2:30 PM CDTSevere Thunderstorm WarningLIXOrleans, Saint Tammany, Washington60 min
Jun 4, 2:53 PM CDTSevere Thunderstorm WarningLIXSaint Tammany, Washington67 min
Jun 4, 3:14 PM CDTSevere Thunderstorm WarningLIXWashington58 min
Jun 3, 10:43 PM CDTTornado WarningLIXHarrison, Jackson32 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2010Every 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.