Alert archive / Illinois / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 65, NWS Chicago, IL

July 22, 2022McHenry County, Illinois

NWS Chicago, IL issued this severe thunderstorm warning at Jul 22, 2022, 11:56 PM CDT for McHenry County, Illinois. It was in force for 49 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
Jul 22, 2022, 11:56 PM CDT (04:56 UTC)
Expired
Jul 23, 2022, 12:45 AM CDT
In force
49 min
Issued by
NWS Chicago, IL
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

County McHenry County, IL

The radar

The Milwaukee radar (KMKX), 72 km from the middle of the area, began a volume at 04:58 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

Green Bay/Straub, WI (KGRB), launched 00:00Z, 4.9 hours before the alert went out and 241 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-pSkew-T log-p diagram, Green Bay/Straub, WI at 00:00Z on 2022-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1388 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 00:00Z on 2022-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 89 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1388 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
1899 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
89 m²/s²
0-3 km storm-relative helicity
217 m²/s²
Significant tornado parameter
0.2
Supercell composite
9.5

Open this sounding in Storm Lab

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 Chicago, IL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 22, 8:47 PM CDT, 3 hours 9 minutes earlier.

Area forecast discussion, Jul 22, 8:47 PM CDT, 3 hours 9 minutes before
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Hazardous weather outlook, Jul 22, 9:51 PM CDT, 2 hours 5 minutes before
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In the hours before

Special weather statement, Jul 22, 11:11 PM CDT, 45 minutes before
Special Weather Statement
National Weather Service Chicago/Romeoville
1111 PM CDT Fri Jul 22 2022

ILZ104-230430-
Central Cook IL-
1111 PM CDT Fri Jul 22 2022

...A strong thunderstorm will impact portions of northeastern Cook
County through 1130 PM CDT...

At 1111 PM CDT, Doppler radar was tracking a strong thunderstorm over
Lincoln Park, moving east at 40 mph.

HAZARD...Winds of 50 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Chicago, West Town, Chicago Loop, Lincoln Park, Lake View, Irving
Park, West Ridge, Austin, Navy Pier, Northerly Island, Edgewater,
Near North Side, Logan Square, Albany Park, Uptown, Humboldt Park,
Near West Side, Rogers Park, East Garfield Park and Lincolnwood.

Including the following interstates...
 I-94 between mile markers 45 and 53.
 I-290 between mile markers 25 and 29.
 I-294 between mile markers 45 and 53.

This includes...  Lincoln Park Zoo, Loyola University, Northeastern
Illinois University, Soldier Field, University of Illinois Chicago,
Wrigley Field, The Loop, Museum Campus, and Northerly Island.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4200 8765 4198 8765 4196 8763 4196 8764
      4191 8762 4190 8762 4189 8761 4188 8762
      4187 8762 4187 8761 4185 8761 4187 8775
      4200 8772
TIME...MOT...LOC 0411Z 276DEG 36KT 4192 8765

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

Birk
Special weather statement, Jul 22, 11:41 PM CDT, 15 minutes before
Special Weather Statement
National Weather Service Chicago/Romeoville
1141 PM CDT Fri Jul 22 2022

ILZ004-005-012-230515-
Kane IL-Boone IL-McHenry IL-
1141 PM CDT Fri Jul 22 2022

...A strong thunderstorm will impact portions of northwestern Kane,
southwestern McHenry and southeastern Boone Counties through 1215 AM
CDT...

At 1141 PM CDT, Doppler radar was tracking a strong thunderstorm near
Belvidere, moving east at 40 mph.

HAZARD...Winds of 45 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Belvidere, Woodstock, Marengo, Poplar Grove, Hampshire, Union and
Garden Prairie.

Including the following interstate...
 I-90 between mile markers 23 and 42.

This includes...  Boone County Fairgrounds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4234 8845 4211 8851 4212 8859 4215 8859
      4215 8878 4217 8889 4232 8886
TIME...MOT...LOC 0441Z 273DEG 33KT 4226 8878

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

Birk

The office that day

Everything else NWS Chicago, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 22, 11:11 PM CDTSpecial Weather StatementLOTCook19 min
Jul 22, 11:24 PM CDTSpecial Marine WarningLOT66 min
Jul 22, 11:41 PM CDTSpecial Weather StatementLOTBoone34 min
Jul 23, 12:29 AM CDTSpecial Marine WarningLOT91 min
Jul 23, 12:33 AM CDTSevere Thunderstorm WarningLOTLake57 min
Jul 23, 1:23 AM CDTSevere Thunderstorm WarningLOTLake52 min
Jul 23, 1:58 AM CDTAreal Flood AdvisoryLOTLake, McHenry5 hr
Jul 23, 2:00 AM CDTSpecial Marine WarningLOT90 min
Jul 23, 2:30 AM CDTFlash Flood WarningLOTLake, McHenry6 hr
Jul 23, 2:52 AM CDTFlood WatchLOTBoone, Cook, DeKalb, DuPage, Grundy, Kane and 8 more9 hr
Jul 23, 3:21 AM CDTSpecial Marine WarningLOT114 min
Jul 23, 4:09 AM CDTSevere Thunderstorm WarningLOTLee, Ogle66 min
Jul 23, 4:22 AM CDTSpecial Marine WarningLOT113 min
Jul 23, 4:49 AM CDTSevere Thunderstorm WarningLOTDeKalb, Lee, Ogle71 min
Jul 23, 4:54 AM CDTSpecial Marine WarningLOT81 min
Jul 23, 4:56 AM CDTSevere Thunderstorm WarningLOTCook, DuPage, Kane64 min
Jul 23, 5:14 AM CDTSpecial Weather StatementLOTDuPage, Kane, Kendall31 min
Jul 23, 5:15 AM CDTAreal Flood AdvisoryLOTCook, DuPage, Kane3 hr
Jul 23, 5:29 AM CDTSevere Thunderstorm WarningLOTCook, DuPage, Will76 min
Jul 23, 5:32 AM CDTSevere Thunderstorm WarningLOTKane, Kendall27 min
Jul 23, 5:35 AM CDTFlash Flood Warning Considerable damage threatLOTLake5 hr
Jul 23, 5:47 AM CDTTornado WarningLOTCook, Will28 min
Jul 23, 6:05 AM CDTTornado Warning Tornado observedLOTWill25 min
Jul 23, 6:19 AM CDTSpecial Marine WarningLOT86 min
Jul 23, 6:20 AM CDTSevere Thunderstorm WarningLOTKankakee55 min
Jul 23, 6:35 AM CDTSpecial Weather StatementLOTLaSalle25 min
Jul 23, 6:42 AM CDTSevere Thunderstorm WarningLOTLaSalle34 min
Jul 23, 6:51 AM CDTSpecial Weather StatementLOTFord, Iroquois54 min
Jul 23, 7:08 AM CDTSpecial Weather StatementLOTLaSalle37 min
Jul 23, 7:20 AM CDTSpecial Weather StatementLOTOgle25 min
Jul 23, 7:44 AM CDTRiver Flood WarningLOTCook, Lake27 hr
Jul 23, 7:44 AM CDTRiver Flood WarningLOTCook34 hr
Jul 23, 7:47 AM CDTSpecial Weather StatementLOTLee43 min
Jul 23, 8:12 AM CDTSpecial Weather StatementLOTKankakee33 min
Jul 23, 8:23 AM CDTAreal Flood AdvisoryLOTIroquois3 hr
Jul 23, 8:56 AM CDTSpecial Weather StatementLOTDeKalb49 min
Jul 23, 9:01 AM CDTSpecial Weather StatementLOTKankakee29 min
Jul 23, 9:08 AM CDTSevere Thunderstorm WarningLOTDeKalb, Kane, Kendall52 min
Jul 23, 9:12 AM CDTFlash Flood WarningLOTIroquois3 hr
Jul 23, 9:58 AM CDTSpecial Weather StatementLOTDuPage47 min
Jul 23, 10:01 AM CDTSpecial Weather StatementLOTKendall44 min
Jul 23, 10:10 AM CDTSpecial Marine WarningLOT82 min
Jul 23, 10:15 AM CDTAreal Flood AdvisoryLOTCook, DuPage, Kane, Kendall, Will3 hr
Jul 23, 10:22 AM CDTSevere Thunderstorm WarningLOTDuPage, Will53 min
Jul 23, 10:49 AM CDTSpecial Weather StatementLOTIroquois, Kankakee, Will41 min
Jul 23, 10:57 AM CDTAreal Flood WarningLOTLake3 hr
Jul 23, 11:46 AM CDTAreal Flood AdvisoryLOTIroquois, Kankakee3 hr
Jul 23, 12:23 PM CDTFlash Flood WarningLOTIroquois6 hr
Jul 23, 1:14 PM CDTSevere Thunderstorm WarningLOTLivingston61 min
Jul 23, 1:27 PM CDTAreal Flood WarningLOTCook, Lake6 hr
Jul 23, 1:32 PM CDTTornado WarningLOTLivingston29 min
Jul 23, 1:45 PM CDTSevere Thunderstorm Warning Considerable damage threatLOTFord75 min
Jul 23, 2:27 PM CDTAreal Flood AdvisoryLOTFord, Livingston4 hr
Jul 23, 2:28 PM CDTFlood WatchLOTBoone, Cook, DeKalb, DuPage, Grundy, Kane and 5 more20 hr
Jul 23, 2:41 PM CDTFlash Flood WarningLOTFord3 hr
Jul 23, 2:57 PM CDTSevere Thunderstorm WarningLOTFord33 min
Jul 23, 3:19 PM CDTSevere Thunderstorm WarningLOTLivingston41 min
Jul 23, 3:28 PM CDTFlash Flood WarningLOTLivingston2 hr
Jul 23, 5:22 PM CDTSevere Thunderstorm Warning Considerable damage threatLOTLaSalle, Livingston33 min
Jul 23, 4:58 AM CDTSevere Thunderstorm WarningLOTPorter62 min
Jul 23, 6:46 AM CDTSevere Thunderstorm WarningLOTBenton, Jasper, Newton59 min
Jul 23, 7:46 AM CDTSpecial Weather StatementLOTBenton44 min
Jul 23, 8:35 AM CDTSpecial Weather StatementLOTBenton40 min
Jul 23, 11:37 AM CDTSevere Thunderstorm WarningLOTJasper23 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2022Every severe thunderstorm 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.