Alert archive / Louisiana / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 156, NWS New Orleans, LA

April 21, 1995Saint Tammany Parish, Tangipahoa Parish, Washington Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Apr 21, 1995, 12:32 AM CDT for Saint Tammany Parish, Tangipahoa Parish, Washington Parish, Louisiana. It was in force for 43 min.

The area

The counties it named.

The facts

Issued: Apr 21, 1995, 12:32 AM CDT (05:32 UTC)
Expired: Apr 21, 1995, 1:15 AM CDT
In force: 43 min
Issued by: NWS New Orleans, LA
Area: Whole counties

Counties Saint Tammany Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 5.5 hours before the alert went out and 59 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: 2256 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 588 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 187 m²/s²
0-3 km storm-relative helicity: 219 m²/s²
Significant tornado parameter: 2.3
Supercell composite: 12.2

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Local storm report, Apr 20, 7:53 PM CDT, 4 hours 39 minutes before

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Special weather statement, Apr 20, 8:01 PM CDT, 4 hours 31 minutes before

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Local storm report, Apr 20, 8:04 PM CDT, 4 hours 28 minutes before

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Special weather statement, Apr 20, 9:30 PM CDT, 3 hours 2 minutes before

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Special weather statement, Apr 20, 9:32 PM CDT, 3 hours before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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Special weather statement, Apr 20, 9:45 PM CDT, 2 hours 47 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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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
Apr 20, 7:27 PM CDT	Severe Thunderstorm Warning	LIX	Avoyelles	33 min
Apr 20, 7:24 PM CDT	Severe Thunderstorm Warning	LIX	Wilkinson	51 min
Apr 21, 12:56 AM CDT	Severe Thunderstorm Warning	LIX	Hancock, Pearl River	49 min
Apr 21, 4:18 AM CDT	Severe Thunderstorm Warning	LIX	Jackson	42 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 1995 Every severe thunderstorm warning in 1995

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.