Alert archive / Indiana / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 19, NWS Indianapolis, IN

May 5, 1999Rush County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at May 5, 1999, 9:42 PM EST for Rush County, Indiana. It was in force for 18 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 5, 1999, 9:42 PM EST (02:42 UTC)
Expired: May 5, 1999, 10:00 PM EST
In force: 18 min
Issued by: NWS Indianapolis, IN
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Rush County, IN

The radar

The Indianapolis radar (KIND), 70 km from the middle of the area, began a volume at 02:45 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 2.7 hours before the alert went out and 144 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: 1053 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1206 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 146 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.8

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, May 5, 7:32 PM EST, 2 hours 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
732 PM EST WED MAY 05 1999

TIME(EST)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0700 PM    5 E VINCENNES             IN    WIND DAMAGE
05/05/99   KNOX                            LARGE TREE ACROSS ROAD
                                           BLOCKING TWO LANES.

Local storm report, May 5, 8:48 PM EST, 54 minutes before

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Special weather statement, May 5, 9:07 PM EST, 35 minutes before

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  <title>Service Notice</title>
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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 Indianapolis, IN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 5, 8:15 PM EST	Severe Thunderstorm Warning	IND	Bartholomew, Brown	35 min
May 5, 8:20 PM EST	Severe Thunderstorm Warning	IND	Johnson	30 min
May 5, 8:30 PM EST	Severe Thunderstorm Warning	IND	Shelby	30 min

Nearby

Severe Thunderstorm Warnings in Indiana, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.