Alert archive / Illinois / Special Marine Warnings in 2021
Special Marine Warning 39, NWS Chicago, IL
NWS Chicago, IL issued this special marine warning at Aug 28, 2021, 5:53 PM CDT. It was in force for 27 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
- Aug 28, 2021, 5:53 PM CDT (22:53 UTC)
- Expired
- Aug 28, 2021, 6:20 PM CDT
- In force
- 27 min
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
- Hail
- 0.0 in
- Wind
- 34.0 mph
What forecasters said that day
The local office's own words before this special marine 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 special marine warning went out at Aug 28, 2:51 PM CDT, 3 hours 2 minutes earlier.
Area forecast discussion, Aug 28, 2:51 PM CDT, 3 hours 2 minutes before
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</html>Hazardous weather outlook, Aug 28, 3:31 PM CDT, 2 hours 22 minutes before
Hazardous Weather Outlook National Weather Service Chicago/Romeoville IL 331 PM CDT Sat Aug 28 2021 ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002- 010-011-019-292045- Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage- La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford- Northern Cook-Central Cook-Southern Cook-Northern Will- Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton- 331 PM CDT Sat Aug 28 2021 /431 PM EDT Sat Aug 28 2021/ This Hazardous Weather Outlook is for portions of North Central Illinois...Northeast Illinois and Northwest Indiana. .DAY ONE...Tonight. Weather hazards expected... Limited Thunderstorm Risk. Limited Excessive Heat Risk. DISCUSSION... Isolated thunderstorms will continue through sunset. Severe weather is not anticipated, but torrential downpours and localized strong wind gusts will be possible with these storms. Heat index values are expected to remain around 100 into early evening. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Sunday... Limited Afternoon Severe Thunderstorm Risk. Limited Flooding Risk. Limited Excessive Heat Risk. Monday... Elevated Thunderstorm Risk. Tuesday... Limited Thunderstorm Risk. DISCUSSION: Scattered thunderstorms are possible Sunday afternoon into Sunday evening. A few of these storms may be severe, especially across northeast Illinois and northwest Indiana. Locally heavy rainfall will also be possible with these storms and this could cause isolated instances of flooding. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be necessary through tonight. GENERAL STORM MOTION OF THE DAY: Moving toward the east northeast at 10 to 15 mph. LMZ740>745-292045- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 331 PM CDT Sat Aug 28 2021 This Hazardous Weather Outlook is for portions of the Illinois nearshore waters of Lake Michigan and the Indiana nearshore waters of Lake Michigan. .DAY ONE...Tonight. Weather hazards expected... Limited Thunderstorm Risk. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Sunday... Limited Severe Thunderstorm Risk. Monday... Limited Thunderstorm Risk. KJB Visit us at http://weather.gov/chicago Follow us on Facebook, Twitter, and Youtube at: www.facebook.com/nwschicago www.twitter.com/nwschicago www.youtube.com/nwschicago
In the hours before
Special weather statement, Aug 28, 3:31 PM CDT, 2 hours 22 minutes before
SPECIAL WEATHER STATEMENT National Weather Service Chicago/Romeoville IL 331 PM CDT Sat Aug 28 2021 ILZ003>006-008-010>013-019>021-023-103>108-INZ001-002-282345- Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage- La Salle-Kendall-Grundy-Kankakee-Northern Cook-Central Cook- Southern Cook-Northern Will-Southern Will-Eastern Will-Lake IN- Porter- Including the cities of Rockford, Belvidere, Crystal Lake, Algonquin, McHenry, Woodstock, Waukegan, Buffalo Grove, Mundelein, Gurnee, Rochelle, Oregon, Byron, Dixon, DeKalb, Sycamore, Aurora, Elgin, Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Ottawa, Streator, La Salle, Mendota, Marseilles, Oswego, Yorkville, Plano, Morris, Coal City, Minooka, Kankakee, Bourbonnais, Bradley, Evanston, Des Plaines, Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn, Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park, Park Forest, Joliet, Bolingbrook, Plainfield, Mokena, Channahon, Manhattan, Wilmington, Crete, Peotone, Beecher, Gary, Hammond, Merrillville, Portage, Valparaiso, and Chesterton 331 PM CDT Sat Aug 28 2021 ...THUNDERSTORMS WITH GUSTY WINDS THIS AFTERNOON... Widely scattered thunderstorms will continue developing across northern Illinois and northwestern Indiana this afternoon. The strongest thunderstorms will produce torrential downpours, frequent lightning, and gusty winds strong enough to down small tree limbs and tented structures. Many areas will stay dry, however. Keep an eye to the sky, and move indoors if you hear thunder. Borchardt
Local storm report, Aug 28, 5:49 PM CDT, 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
549 PM CDT SAT AUG 28 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0544 PM TSTM WND GST BATAVIA 41.85N 88.31W
08/28/2021 M50 MPH KANE IL CO-OP OBSERVER
&&
ELThe office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 4:16 PM CDT | Special Marine Warning | LOT | 59 min | |
| Aug 28, 5:13 PM CDT | Special Marine Warning | LOT | 62 min | |
| Aug 28, 5:26 PM CDT | Areal Flood Advisory | LOT | Boone, McHenry | 2 hr |
Nearby
Special Marine Warnings in Illinois, 2021Every special marine warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.