Alert archive / Kansas / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 23, NWS Topeka, KS
NWS Topeka, KS issued this severe thunderstorm warning at May 3, 1999, 10:43 PM CDT for Douglas County, Osage County, Shawnee County, Kansas. It was in force for 27 min. 6 reports 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
- May 3, 1999, 10:43 PM CDT (03:43 UTC)
- Expired
- May 3, 1999, 11:10 PM CDT
- In force
- 27 min
- Issued by
- NWS Topeka, KS
- Area
- Whole counties
Counties Douglas County, KS, Osage County, KS, Shawnee County, KS
The radar
The Topeka radar (KTWX), 57 km from the middle of the area, began a volume at 03:42 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 3, 10:50 PM CDT | Thunderstorm Wind 65 | Osage City, KS | |
| May 3, 10:55 PM CDT | Thunderstorm Wind 61 | Lecompton, KS | |
| May 3, 10:55 PM CDT | Thunderstorm Wind 65 | Scranton, KS | |
| May 3, 11:05 PM CDT | Thunderstorm Wind 56 | Clinton, KS | |
| May 3, 11:10 PM CDT | Hail 0.75 | Lecompton, KS | |
| May 3, 11:15 PM CDT | Thunderstorm Wind 53 | Lawrence, KS |
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
Topeka, KS (KTOP), launched 00:00Z, 3.7 hours before the alert went out and 16 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.
- Mixed-layer CAPE
- 969 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 1208 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 193 m²/s²
- 0-3 km storm-relative helicity
- 294 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 13.3
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 Topeka, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at May 3, 3:15 PM CDT, 7 hours 28 minutes earlier.
Area forecast discussion, May 3, 3:15 PM CDT, 7 hours 28 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
Local storm report, May 3, 9:17 PM CDT, 1 hour 26 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>The office that day
Everything else NWS Topeka, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 3, 8:58 PM CDT | Severe Thunderstorm Warning | TOP | Morris | 32 min |
| May 3, 9:23 PM CDT | Severe Thunderstorm Warning | TOP | Geary, Wabaunsee | 32 min |
| May 3, 10:18 PM CDT | Severe Thunderstorm Warning | TOP | Lyon, Osage | 27 min |
| May 3, 11:07 PM CDT | Severe Thunderstorm Warning | TOP | Douglas, Jefferson | 28 min |
| May 4, 3:07 PM CDT | Severe Thunderstorm Warning | TOP | Dickinson | 38 min |
| May 4, 3:18 PM CDT | Tornado Warning | TOP | Dickinson | 32 min |
| May 4, 3:48 PM CDT | Severe Thunderstorm Warning | TOP | Dickinson | 42 min |
| May 4, 4:28 PM CDT | Tornado Warning | TOP | Dickinson, Geary | 37 min |
| May 4, 4:37 PM CDT | Tornado Warning | TOP | Morris | 43 min |
| May 4, 5:08 PM CDT | Tornado Warning | TOP | Geary, Riley | 32 min |
| May 4, 5:17 PM CDT | Tornado Warning | TOP | Geary, Morris | 38 min |
| May 4, 5:49 PM CDT | Tornado Warning | TOP | Geary, Riley, Wabaunsee | 46 min |
| May 4, 5:52 PM CDT | Tornado Warning | TOP | Pottawatomie | 43 min |
| May 4, 6:30 PM CDT | Tornado Warning | TOP | Pottawatomie, Wabaunsee | 30 min |
| May 4, 6:34 PM CDT | Tornado Warning | TOP | Marshall, Pottawatomie | 41 min |
| May 4, 6:56 PM CDT | Tornado Warning | TOP | Jackson, Pottawatomie | 39 min |
Nearby
Severe Thunderstorm Warnings in Kansas, 1999Every 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; radar from the NEXRAD Level II archive.