Alert archive / Kansas / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 17, NWS Wichita, KS
NWS Wichita, KS issued this severe thunderstorm warning at Apr 5, 1999, 7:39 AM CDT for Butler County, Kansas. It was in force for 66 min. 3 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
- Apr 5, 1999, 7:39 AM CDT (12:39 UTC)
- Expired
- Apr 5, 1999, 8:45 AM CDT
- In force
- 66 min
- Issued by
- NWS Wichita, KS
- Area
- Whole counties
County Butler County, KS
The radar
The Wichita radar (KICT), 55 km from the middle of the area, began a volume at 12:42 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 |
|---|---|---|---|
| Apr 5, 8:00 AM CDT | Thunderstorm Wind 52 | Potwin, KS | Occurred at K-196 and Meadowlark Rd. |
| Apr 5, 8:53 AM CDT | Hail 1 | El Dorado, KS | |
| Apr 5, 8:53 AM CDT | Thunderstorm Wind 61 | El Dorado, 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
Lamont, OK (KLMN), launched 12:00Z, 0.7 hours before the alert went out and 141 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
- 1211 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 593 m above ground
- 0-6 km bulk shear
- 139 kt
- 0-1 km storm-relative helicity
- 1513 m²/s²
- 0-3 km storm-relative helicity
- 1962 m²/s²
- Significant tornado parameter
- 14.2
- Supercell composite
- 52.4
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 Wichita, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 5, 3:50 AM CDT, 3 hours 49 minutes earlier.
Area forecast discussion, Apr 5, 3:50 AM CDT, 3 hours 49 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE WICHITA KS 244 AM CDT MON APR 5 1999 MAIN CONCERN WILL BE LINE OF STORMS MOVING ACROSS THE CWA THIS MORNING. LINE SHOULD BE THOUGH MUCH OF CENTRAL KS BEFORE SUNRISE... SO WILL LIKELY HAVE TO BREAK THE TODAY PERIOD UP INTO A "THIS MORNING AND AFTN" WORDING. WILL ALSO GO AHEAD AND ADD THE "SOME MAY BE SEVERE" WORDING TO SE KS GROUPINGS. ALTHOUGH LINE WILL MOVE OUT OF THE AREA THIS MORNING...UPPER LVL COLD COOL WILL NOT SLIDE THROUGH UNTIL LATER THIS AFTN SO WILL CONTINUE A SMALL POP INTO THE AFTN HOURS AS LAPSE RATES STEEPEN IN RESPONSE TO THE COOLER TEMPS ALOFT. MODELS ARE IN CLOSE AGREEMENT WITH THIS SYSTEM AS IT MOVES THROUGH KS...AS WELL AS THE FINAL SYSTEM IN OUR TRILOGY OF STORMS SINCE LAST FRIDAY. CURRENT FORECAST LOOKS GOOD SO ONLY MINOR CHANGES EXPECTED. LOW IS PROGD TO BE IN IA BY 06Z TONIGHT...CHC OF LINGERING PCPN IN CENTRAL KS SEEMS LESS THAN 20 PERCENT SO WILL GO AHEAD AND REMOVE THEM FOR TONIGHT. DRIER AIR AND DOWNSLOPE WINDS SHOULD CLEAR SKIES NICELY ACROSS THE ENTIRE CWA. WEAK HIGH PRESSURE SLIDING ACROSS OK AND SOME UPPER LVL RIDGING WILL ALLOW FOR SUNNY SKIES ON TUE. FOR TUESDAY NIGHT WILL CONTINUE TO UNDERCUT GUIDANCE NUMBERS...MOISTURE APPEARS TO BE RETURNING A LITTLE TOO FAST...ALTHOUGH SOUTH WINDS WILL BE INCREASING (AT THE SFC AS WELL AS 850MB) IN RESPONSE TO THE STRENGTHENING LEE SIDE TROUGH...WHICH SHOULD KEEP US FROM COMPLETELY BOTTOMING OUT. ON WEDNESDAY...ITS DEJA VU ALL OVER AGAIN...CLDS INCREASE DURING THE AFTN AND ANOTHER CHC OF TSRA LATE WED NIGHT AS THE FINAL STORM SYSTEM (CURRENTLY COMING DOWN THE WEST COAST) MOVES OUT INTO THE PLAINS EARLY THURSDAY. NOONAN ICT 65 42 70 46 / 40 5 0 5 HUT 65 42 70 46 / 40 5 0 5 EWK 65 42 70 46 / 40 5 0 5 EQA 65 42 70 46 / 40 5 0 5 WLD 65 42 70 46 / 40 5 0 5 RSL 60 36 68 40 / 40 10 0 5 GBD 60 36 68 40 / 40 10 0 5 SLN 61 38 68 45 / 40 10 0 5 MPR 61 38 68 45 / 40 10 0 5 CFV 68 43 68 46 / 80 5 0 5 CNU 68 43 68 46 / 80 5 0 5 K88 68 43 68 46 / 80 5 0 5 .ICT...NONE.
In the hours before
Special weather statement, Apr 5, 5:10 AM CDT, 2 hours 29 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>Special weather statement, Apr 5, 5:10 AM CDT, 2 hours 29 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 Wichita, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 5, 3:54 AM CDT | Severe Thunderstorm Warning | ICT | Harper | 51 min |
| Apr 5, 4:36 AM CDT | Tornado Warning | ICT | Harper | 39 min |
| Apr 5, 4:44 AM CDT | Severe Thunderstorm Warning | ICT | Kingman | 46 min |
| Apr 5, 5:28 AM CDT | Severe Thunderstorm Warning | ICT | Harper | 47 min |
| Apr 5, 6:35 AM CDT | Severe Thunderstorm Warning | ICT | Sumner | 55 min |
| Apr 5, 7:15 AM CDT | Severe Thunderstorm Warning | ICT | Sedgwick | 60 min |
| Apr 5, 7:45 AM CDT | Tornado Warning | ICT | Sedgwick | 30 min |
| Apr 5, 8:21 AM CDT | Severe Thunderstorm Warning | ICT | Cowley | 39 min |
| Apr 5, 8:40 AM CDT | Severe Thunderstorm Warning | ICT | Butler | 65 min |
| Apr 5, 9:01 AM CDT | Severe Thunderstorm Warning | ICT | Chase | 59 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.