Alert archive / Indiana / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 46, NWS Louisville, KY

April 28, 1999Perry County, Indiana

NWS Louisville, KY issued this severe thunderstorm warning at Apr 28, 1999, 1:22 PM EST for Perry County, Indiana. It was in force for 23 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: Apr 28, 1999, 1:22 PM EST (18:22 UTC)
Expired: Apr 28, 1999, 1:45 PM EST
In force: 23 min
Issued by: NWS Louisville, KY
Area: Whole counties

County Perry County, IN

What was reported inside it

Time	Report	Where	Remark
Apr 28, 1:30 PM EST	Hail 0.75	Bristow, IN	3/4 inch hail covered the ground

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

Nashville Metro, TN (KBNA), launched 12:00Z, 6.4 hours before the alert went out and 217 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1325 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 130 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 Louisville, KY wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 28, 2:45 AM EST, 10 hours 37 minutes earlier.

Area forecast discussion, Apr 28, 2:45 AM EST, 10 hours 37 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</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.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

In the hours before

Special weather statement, Apr 28, 9:40 AM EST, 3 hours 42 minutes before

KYZ023>043-045>049-053>057-061>067-070>078-081-082-INZ076>079-083-
084-089>092-282200-

CENTRAL KENTUCKY AND SOUTH-CENTRAL INDIANA SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LOUISVILLE KY
1040 AM EDT WED APR 28 1999

THE STORM PREDICTION CENTER HAS INDICATED THAT A SLIGHT RISK OF
SEVERE THUNDERSTORMS EXISTS THIS AFTERNOON AND EVENING ACROSS
CENTRAL KENTUCKY.

AN UPPER LEVEL LOW PRESSURE SYSTEM IN SOUTHERN ILLINOIS WILL
MOVE INTO KENTUCKY LATER TODAY. THE COMBINATION OF A MILD...MOIST
AIRMASS AT THE SURFACE...COUPLED WITH COLD AIR ALOFT
(IN ASSOCIATION WITH THE UPPER LOW) WILL HELP TO PRODUCE SHOWERS
AND THUNDERSTORMS ACROSS THE REGION.

BECAUSE OF THE COLD AIR ALOFT...SOME OF THE STRONGEST THUNDERSTORMS
MAY PRODUCE HAIL.

THIS IS A PRELIMINARY OUTLOOK.  STAY TUNED TO NOAA WEATHER RADIO
FROM THE NATIONAL WEATHER SERVICE OR THE MEDIA FOR THE LATEST
INFORMATION. SKYWARN SPOTTER ACTIVATION MAY BE REQUESTED LATER THIS
AFTERNOON.

STUREY

Special weather statement, Apr 28, 9:40 AM EST, 3 hours 42 minutes before

KYZ023>043-045>049-053>057-061>067-070>078-081-082-INZ076>079-083-
084-089>092-282200-

CENTRAL KENTUCKY AND SOUTH-CENTRAL INDIANA SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LOUISVILLE KY
1040 AM EDT WED APR 28 1999

THE STORM PREDICTION CENTER HAS INDICATED THAT A SLIGHT RISK OF
SEVERE THUNDERSTORMS EXISTS THIS AFTERNOON AND EVENING ACROSS
CENTRAL KENTUCKY.

AN UPPER LEVEL LOW PRESSURE SYSTEM IN SOUTHERN ILLINOIS WILL
MOVE INTO KENTUCKY LATER TODAY. THE COMBINATION OF A MILD...MOIST
AIRMASS AT THE SURFACE...COUPLED WITH COLD AIR ALOFT
(IN ASSOCIATION WITH THE UPPER LOW) WILL HELP TO PRODUCE SHOWERS
AND THUNDERSTORMS ACROSS THE REGION.

BECAUSE OF THE COLD AIR ALOFT...SOME OF THE STRONGEST THUNDERSTORMS
MAY PRODUCE HAIL.

THIS IS A PRELIMINARY OUTLOOK.  STAY TUNED TO NOAA WEATHER RADIO
FROM THE NATIONAL WEATHER SERVICE OR THE MEDIA FOR THE LATEST
INFORMATION. SKYWARN SPOTTER ACTIVATION MAY BE REQUESTED LATER THIS
AFTERNOON.

STUREY

The office that day

Everything else NWS Louisville, KY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 28, 2:43 PM EST	Severe Thunderstorm Warning	LMK	Jefferson	32 min
Apr 28, 2:45 PM EST	Severe Thunderstorm Warning	LMK	Nelson, Spencer	30 min
Apr 28, 3:01 PM EST	Severe Thunderstorm Warning	LMK	Bullitt	29 min
Apr 28, 3:13 PM EST	Severe Thunderstorm Warning	LMK	Jefferson	32 min
Apr 28, 3:58 PM EST	Severe Thunderstorm Warning	LMK	Henry, Oldham	32 min
Apr 28, 4:15 PM EST	Severe Thunderstorm Warning	LMK	Trimble	25 min
Apr 28, 4:41 PM EST	Severe Thunderstorm Warning	LMK	Hardin, Meade	29 min
Apr 28, 5:44 PM EST	Flash Flood Warning	LMK	Hardin	61 min
Apr 28, 5:45 PM EST	Severe Thunderstorm Warning	LMK	Adair	30 min
Apr 27, 9:10 PM EST	Severe Thunderstorm Warning	LMK	Dubois	45 min
Apr 28, 2:14 PM EST	Severe Thunderstorm Warning	LMK	Crawford	46 min
Apr 28, 3:01 PM EST	Severe Thunderstorm Warning	LMK	Crawford, Harrison	44 min
Apr 28, 3:26 PM EST	Flash Flood Warning	LMK	Crawford	2 hr

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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.