Alert archive / Illinois / Snow Squall Warnings in 2022
Snow Squall Warning 2, NWS Chicago, IL
NWS Chicago, IL issued this snow squall warning at Feb 18, 2022, 7:46 PM CST for Boone County, Ogle County, Winnebago County, Illinois. It was in force for 59 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
- Feb 18, 2022, 7:46 PM CST (01:46 UTC)
- Expired
- Feb 18, 2022, 8:45 PM CST
- In force
- 59 min
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
Counties Boone County, IL, Ogle County, IL, Winnebago County, IL
The radar
The Milwaukee radar (KMKX), 93 km from the middle of the area, began a volume at 01:50 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
Davenport, (KDVN), launched 00:00Z, 1.8 hours before the alert went out and 134 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1630 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 287 m²/s²
- 0-3 km storm-relative helicity
- 287 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this snow squall warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Chicago, IL wrote its last area forecast discussion before this snow squall warning went out at Feb 18, 5:51 PM CST, 1 hour 55 minutes earlier.
Area forecast discussion, Feb 18, 5:51 PM CST, 1 hour 55 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>Hazardous weather outlook, Feb 18, 3:52 PM CST, 3 hours 54 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, Feb 18, 2:54 PM CST, 4 hours 52 minutes before
SPECIAL WEATHER STATEMENT National Weather Service Chicago/Romeoville IL 254 PM CST Fri Feb 18 2022 ILZ032-033-039-INZ010-011-019-190300- Livingston-Iroquois-Ford-Newton-Jasper-Benton- Including the cities of Pontiac, Dwight, Fairbury, Watseka, Gilman, Paxton, Gibson City, Roselawn, Kentland, Morocco, Rensselaer, DeMotte, Fowler, and Oxford 254 PM CST Fri Feb 18 2022 /354 PM EST Fri Feb 18 2022/ ...Blowing Snow Likely in Open Areas through Tonight... * WHAT...At least patchy blowing and drifting snow caused by southwest wind gusts to 35 mph this afternoon and northwest wind gusts to 40 mph tonight. * WHERE...Open or rural areas of east-central Illinois and northwest Indiana. * WHEN...Through tonight. * IMPACTS...Reduced visibility and lightly snow covered roads due to blowing and drifting snow, making for locally hazardous travel. * ADDITIONAL DETAILS...A Winter Weather Advisory may be needed if blowing snow is expected to become more widespread and hazardous. * ACTIONS...Allow extra travel time and expect varying road conditions and visibility in open areas. Kluber
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 18, 8:42 PM CST | Snow Squall Warning | LOT | Boone, DeKalb, Kane, Lake, Lee, McHenry and 2 more | 63 min |
| Feb 18, 9:30 PM CST | Snow Squall Warning | LOT | Cook, DeKalb, DuPage, Kane, Kendall, Lake and 4 more | 60 min |
| Feb 18, 10:05 PM CST | Snow Squall Warning | LOT | DeKalb, Grundy, Kane, Kendall, LaSalle | 55 min |
| Feb 19, 3:47 AM CST | Gale Warning | LOT | 38 hr | |
| Feb 19, 3:47 AM CST | Small Craft Advisory | LOT | 20 hr | |
| Feb 19, 2:08 PM CST | Wind Advisory | LOT | Boone, Cook, DeKalb, DuPage, Kane, Kendall and 5 more | 25 hr |
Nearby
Snow Squall Warnings in Illinois, 2022Every snow squall warning in 2022
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.