Alert archive / Illinois / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 34, NWS Chicago, IL
NWS Chicago, IL issued this severe thunderstorm warning at May 19, 1998, 6:44 PM CDT for Ford County, Livingston County, Illinois. It was in force for 46 min. 2 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 19, 1998, 6:44 PM CDT (23:44 UTC)
- Expired
- May 19, 1998, 7:30 PM CDT
- In force
- 46 min
- Issued by
- NWS Chicago, IL
- Area
- Whole counties
Counties Ford County, IL, Livingston County, IL
The radar
The Chicago radar (KLOT), 99 km from the middle of the area, began a volume at 23:47 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 19, 7:30 PM CDT | Thunderstorm Wind 50 | Paxton, IL | Trees were downed on a nursing home in Paxton. A telephone pole fell on 4 cars. In Roberts, extensive damage occurred as gutters were torn from houses, and winds uprooted trees which created roads to be blocked. |
| May 19, 7:30 PM CDT | Hail 1.75 | Piper City, IL |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 19, 2:00 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 19, 6:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 11.7 hours before the alert went out and 68 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
- 1768 J/kg
- Mixed-layer CIN
- -211 J/kg
- Mixed-layer LCL
- 1007 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 134 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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
Special weather statement, May 19, 5:12 PM CDT, 1 hour 32 minutes before
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</html>Special weather statement, May 19, 5:12 PM CDT, 1 hour 32 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.
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</html>The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 3:38 PM CDT | Severe Thunderstorm Warning | LOT | Ogle | 30 min |
| May 19, 3:43 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 32 min |
| May 19, 3:50 PM CDT | Severe Thunderstorm Warning | LOT | DeKalb, Kane | 40 min |
| May 19, 4:16 PM CDT | Tornado Warning | LOT | DeKalb, Kane | 44 min |
| May 19, 4:18 PM CDT | Severe Thunderstorm Warning | LOT | Kankakee | 42 min |
| May 19, 4:41 PM CDT | Flash Flood Warning | LOT | DeKalb, Kane | 60 min |
| May 19, 4:09 PM CDT | Severe Thunderstorm Warning | LOT | Newton | 36 min |
| May 19, 4:21 PM CDT | Severe Thunderstorm Warning | LOT | Benton | 39 min |
| May 19, 4:49 PM CDT | Tornado Warning | LOT | Newton | 31 min |
| May 19, 5:00 PM CDT | Severe Thunderstorm Warning | LOT | Jasper | 45 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 1998Every severe thunderstorm warning in 1998
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.