Alert archive / Illinois / Special Weather Statements in 2018

Special Weather Statement, NWS Chicago, IL

August 9, 2018DuPage County, Illinois

NWS Chicago, IL issued this special weather statement at Aug 9, 2018, 7:34 PM CDT for DuPage County, Illinois. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 9, 2018, 7:34 PM CDT (00:34 UTC)
Expired: Aug 9, 2018, 8:00 PM CDT
In force: 26 min
Issued by: NWS Chicago, IL

County DuPage County, IL

The radar

The Chicago radar (KLOT), 31 km from the middle of the area, began a volume at 00:35 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 text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 weather statement went out at Aug 9, 6:50 PM CDT, 44 minutes earlier.

Area forecast discussion, Aug 9, 6:50 PM CDT, 44 minutes before

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Hazardous weather outlook, Aug 9, 3:48 PM CDT, 3 hours 46 minutes before

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
348 PM CDT Thu Aug 9 2018

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
102100-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-DuPage-Cook-
La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford-
Lake IN-Porter-Newton-Jasper-Benton-
348 PM CDT Thu Aug 9 2018 /448 PM EDT Thu Aug 9 2018/

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...with an associated:
     Limited damaging wind risk...up to 60 MPH.
  Limited Excessive heat Risk.

DISCUSSION...

Scattered thunderstorms are expected through this evening, mainly
north of I-80. Some could be strong to severe, producing damaging
winds.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Friday...
  Limited Thunderstorm Risk.
Tuesday...
  Limited Thunderstorm Risk.
Wednesday...
  Elevated Thunderstorm Risk.

DISCUSSION:

Scattered thunderstorms are expected again on Friday, mainly south
of I-80.

.SPOTTER INFORMATION STATEMENT...

  Spotters may be needed this evening.

GENERAL STORM MOTION OF THE DAY:

  Moving toward southeast at around 25 mph.

LMZ740>745-102100-
Winthrop Harbor to Wilmette Harbor-
Wilmette Harbor to Northerly Island-
Northerly Island to Calumet Harbor-Calumet Harbor to Gary-
Gary to Burns Harbor-Burns Harbor to Michigan City-
348 PM CDT Thu Aug 9 2018

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...with an associated:
     Limited thunderstorm wind gust risk...up to 50 knots.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Tuesday...
  Limited Thunderstorm Risk.
Wednesday...
  Elevated Thunderstorm Risk.

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-102100-
Lake Michigan from Michigan City IN to St. Joseph MI 5 NM
offshore to Mid Lake-
Lake Michigan from Seul Choix Point to Rock Island Passage 5 NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and north of a line from Charlevoix MI to South
Fox Island 5 NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5 NM offshore to
Mid Lake-
Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5 NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5 NM offshore to
Mid Lake-
Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5 NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5 NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor IL to Michigan City IN 5 NM
offshore to Mid Lake-
Lake Michigan Holland to Whitehall MI 5 nm off shore to mid-
line of lake-
Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5 NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5 NM offshore to Mid
Lake-
Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to
Mid Lake-
348 PM CDT Thu Aug 9 2018

This Hazardous Weather Outlook is for portions of the open waters
of Lake Michigan.

.DAY ONE...Tonight.

Weather hazards expected...

  Limited Thunderstorm Risk...with an associated:
     Limited thunderstorm wind gust risk...up to 50 knots.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Friday and Saturday...
  Limited Thunderstorm Risk.
Tuesday...
  Limited Thunderstorm Risk.
Wednesday...
  Elevated Thunderstorm Risk.

Rodriguez

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In the hours before

Special weather statement, Aug 9, 4:17 PM CDT, 3 hours 17 minutes before

Special Weather Statement
National Weather Service Chicago/Romeoville Il
417 PM CDT THU AUG 9 2018

ILZ006-092145-
Lake IL-
417 PM CDT THU AUG 9 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN LAKE COUNTY UNTIL
445 PM CDT...

At 417 PM CDT, Doppler radar was tracking a strong thunderstorm over
Wadsworth, or near Gurnee, moving east at 15 mph.

Dime size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Waukegan, North Chicago, Gurnee, Zion, Beach Park, Lake Villa, Park
City, Venetian Village, Lindenhurst, Wadsworth, Third Lake, Grandwood
Park and Old Mill Creek.

Including the following interstates...
 I-94 between mile markers 1 and 10.
 I-294 between mile markers 1 and 10.

This includes...  IL Beach State Park, Lake County Fielders Baseball,
and Six Flags Great America.

LAT...LON 4249 8780 4246 8780 4239 8781 4236 8781
      4236 8782 4237 8782 4233 8783 4233 8782
      4232 8782 4240 8807 4250 8805
TIME...MOT...LOC 2117Z 273DEG 12KT 4245 8797

KLUBER

Special weather statement, Aug 9, 5:59 PM CDT, 1 hour 35 minutes before

Special Weather Statement
National Weather Service Chicago/Romeoville Il
559 PM CDT THU AUG 9 2018

ILZ003>006-100000-
Lake IL-Boone IL-McHenry IL-Winnebago IL-
559 PM CDT THU AUG 9 2018

...SIGNIFICANT WEATHER ADVISORY FOR LAKE...WINNEBAGO...MCHENRY AND
BOONE COUNTIES UNTIL 700 PM CDT...

At 558 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 9 miles east of Zion to near Hebron to 7 miles
northwest of Rockton. Movement was southeast at 25 mph.

Winds in excess of 40 mph will be possible with these storms.

Locations impacted include...
Rockford, Waukegan, North Chicago, Gurnee, Mundelein, McHenry,
Belvidere, Vernon Hills, Woodstock, Zion, Loves Park, Machesney Park,
Grayslake, Libertyville, Lake Forest, Round Lake, Antioch, Beach
Park, Wauconda and Fox Lake.

The Boone County Fair should seek safe shelter!

Including the following interstates...
 I-90 between mile markers 0 and 2, and between mile markers 63 and
76.
 I-94 between mile markers 1 and 18.
 I-294 between mile markers 1 and 18.

This includes...  Boone County Fairgrounds, Chain O Lakes State Park,
College of Lake County, Great Lakes Naval Training Center, Lake
County Fielders Baseball, Lake County IL Fairgrounds, Lake Forest
College, Mchenry County College, Mchenry County Fairgrounds, Moraine
Hills State Park, Rock Cut State Park, Rock Valley College, Rockford
Aviators Baseball, Rockford Speedway, Six Flags Great America, and
Winnebago County Fairgrounds.

LAT...LON 4249 8780 4247 8780 4230 8783 4225 8782
      4222 8803 4229 8940 4250 8940
TIME...MOT...LOC 2258Z 300DEG 21KT 4243 8767 4244 8848 4251 8919

KLUBER

Special weather statement, Aug 9, 6:59 PM CDT, 35 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 7:38 PM CDT	Severe Thunderstorm Warning	LOT	Cook, DuPage	20 min
Aug 9, 7:58 PM CDT	Special Weather Statement	LOT	Cook	32 min
Aug 9, 9:52 PM CDT	Special Weather Statement	LOT	Lee	38 min
Aug 10, 3:10 AM CDT	Dense Fog Advisory	LOT	Boone, DeKalb, DuPage, Kane, Lee, McHenry and 2 more	6 hr
Aug 10, 4:47 PM CDT	Special Weather Statement	LOT	Jasper, Newton	43 min

Nearby

Special Weather Statements in Illinois, 2018 Every special weather statement in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.