Alert archive / Mississippi / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 166, NWS New Orleans, LA

July 26, 1999Hancock County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Jul 26, 1999, 2:48 PM CDT for Hancock County, Mississippi. It was in force for 27 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 26, 1999, 2:48 PM CDT (19:48 UTC)
Expired: Jul 26, 1999, 3:15 PM CDT
In force: 27 min
Issued by: NWS New Orleans, LA
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Hancock County, MS

What was reported inside it

Time	Report	Where	Remark
Jul 26, 3:00 PM CDT	Thunderstorm Wind	Waveland, MS	The Hancock County Sheriff's Office reported trees blown down.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 7.8 hours before the alert went out and 27 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: 1398 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 778 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: -32 m²/s²
0-3 km storm-relative helicity: -5 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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.

NWS New Orleans, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 26, 1:26 PM CDT, 1 hour 22 minutes earlier.

Area forecast discussion, Jul 26, 1:26 PM CDT, 1 hour 22 minutes before

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In the hours before

Special weather statement, Jul 26, 10:00 AM CDT, 4 hours 48 minutes before

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</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <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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      <p id="message2">
        Please try again in a few minutes.
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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
Jul 26, 3:15 PM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany	45 min
Jul 26, 3:49 PM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany	41 min
Jul 26, 3:54 PM CDT	Severe Thunderstorm Warning	LIX	Washington	51 min
Jul 26, 6:16 PM CDT	Severe Thunderstorm Warning	LIX	Saint Helena	34 min
Jul 26, 2:32 PM CDT	Severe Thunderstorm Warning	LIX	Harrison	43 min
Jul 26, 3:21 PM CDT	Severe Thunderstorm Warning	LIX	Hancock	24 min
Jul 26, 6:21 PM CDT	Severe Thunderstorm Warning	LIX	Pike	64 min
Jul 26, 6:51 PM CDT	Severe Thunderstorm Warning	LIX	Amite	44 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1999 Every severe thunderstorm warning in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.