Alert archive / Illinois / River Flood Warnings in 2018

River Flood Warning 97, NWS Chicago, IL

June 26, 2018Cook County, Illinois

NWS Chicago, IL issued this river flood warning at Jun 26, 2018, 10:56 PM CDT for Cook County, Illinois. It took effect at Jun 26, 2018, 11:43 PM CDT. It was in force for 5 days.

The area

The counties it named.

The facts

Issued: Jun 26, 2018, 10:56 PM CDT (03:56 UTC)
In effect from: Jun 26, 2018, 11:43 PM CDT
Expired: Jul 1, 2018, 11:55 AM CDT
In force: 5 days
Issued by: NWS Chicago, IL
Area: Storm-based polygon
Flood severity: Minor

County Cook County, IL

The radar

The Chicago radar (KLOT), 49 km from the middle of the area, began a volume at 03:58 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 river

Written for the forecast point Des Plaines River near Des Plaines (DSPI2). The gauge peaked at 16.46 ft at Jun 28, 2018, 4:00 PM CDT.

Action stage: 13.5 ft
Minor stage: 15 ft
Moderate stage: 18 ft
Major stage: 19 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05529000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood 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 river flood warning went out at Jun 26, 6:58 PM CDT, 3 hours 58 minutes earlier.

Area forecast discussion, Jun 26, 6:58 PM CDT, 3 hours 58 minutes before

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Hazardous weather outlook, Jun 26, 4:37 PM CDT, 6 hours 19 minutes before

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
437 PM CDT Tue Jun 26 2018

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
272145-
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-
437 PM CDT Tue Jun 26 2018 /537 PM EDT Tue Jun 26 2018/

This Hazardous Weather Outlook is for portions of North Central
Illinois...Northeast Illinois and Northwest Indiana.

.DAY ONE...Tonight.

Weather hazards expected...

  Significant Thunderstorm Risk...with an associated:
     Limited Tornado risk.
     Limited damaging wind risk...up to 60 mph.
  Elevated Flooding Risk.

DISCUSSION...

 Scattered thunderstorms will continue across northern Illinois
 and northwest Indiana into the mid to late evening hours.
 Widespread severe thunderstorms are not expected, however,
 cannot rule out an isolated severe storm or two that produces
 damaging winds or a brief tornado. The greater concern is for
 heavy rainfall that could lead to flooding, especially over
 areas that are already saturated from recent rainfall events.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Wednesday...
  Limited Thunderstorm Risk.
Thursday...
  Limited Thunderstorm Risk.
  Limited Excessive Heat Risk.
Friday...
  Significant Excessive Heat Risk.
Saturday...
  Limited Thunderstorm Risk.
  Elevated Excessive Heat Risk.
Sunday...
  Limited Thunderstorm Risk.
  Limited Excessive Heat Risk.
Monday...
  Limited Thunderstorm Risk.

DISCUSSION:

 Thunderstorms Wednesday would be limited to far eastern portions
 of the forecast area in northwest Indiana. Thunderstorms Thursday
 would be after midnight into Friday morning.

 Dangerous heat is expected Friday and Saturday. The combination
 of temperatures in the mid 90s and dewpoints in the mid 70s is
 expected to produce heat index values between 100 and 110
 degrees for much of the area.

.SPOTTER INFORMATION STATEMENT...

 Spotters may be needed this evening.

GENERAL STORM MOTION OF THE DAY:

 Moving toward north or northeast at 25-35 mph.

LMZ740>745-272145-
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-
437 PM CDT Tue Jun 26 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...

  Significant Thunderstorm Risk...with an associated:
   Limited Waterspout Risk.
   Limited thunderstorm wind gust risk...up to 50 mph.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Wednesday and Thursday...
  Limited Thunderstorm Risk.
Saturday and Sunday...
  Limited Thunderstorm Risk.

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-272145-
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-
437 PM CDT Tue Jun 26 2018

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

.DAY ONE...Tonight.

Weather hazards expected...

  Significant Thunderstorm Risk...with an associated:
     Limited Waterspout Risk.
     Limited thunderstorm wind gust risk...up to 50 mph.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Wednesday through Sunday...
  Limited Thunderstorm Risk.

Lenning

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In the hours before

Local storm report, Jun 26, 6:03 PM CDT, 4 hours 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
603 PM CDT TUE JUN 26 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0546 PM     FLOOD            3 SW GAGES LAKE         42.32N 88.01W
06/26/2018                   LAKE               IL   PUBLIC

            ABOUT 1 FOOT OF STANDING WATER ON IL ROUTE 137 AT THE
            INTERSECTION OF MIDLOTHIAN ROAD IN SOUTHEAST SECTION OF
            GRAYSLAKE.

&&

RC

Local storm report, Jun 26, 6:06 PM CDT, 4 hours 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
606 PM CDT TUE JUN 26 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0526 PM     FLOOD            LIBERTYVILLE            42.28N 87.97W
06/26/2018                   LAKE               IL   EMERGENCY MNGR

            ALL LOCAL ROADS WITH SEVERAL INCHES OF STANDING
            WATER...SOME WITH FLOWING WATER. 0.56 INCHES OF RAIN
            OCCURRED BETWEEN 503PM AND 513PM AT THE LAKE COUNTY EOC
            NEAR WINCHESTER ROAD AND ROUTE 21...WITH AFTERNOON TOTAL
            OF 1.10 INCHES.

&&

RC

Local storm report, Jun 26, 6:25 PM CDT, 4 hours 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
625 PM CDT TUE JUN 26 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0528 PM     FLOOD            2 SSE HAMPSHIRE         42.07N 88.51W
06/26/2018                   KANE               IL   TRAINED SPOTTER

            MOST ROADS IN AREA ACTIVELY FLOODING DUE TO FARM FIELD
            RUNOFF. RELAYED VIA SPOTTER NETWORK.

&&

RC

Local storm report, Jun 26, 6:27 PM CDT, 4 hours 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
627 PM CDT TUE JUN 26 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0622 PM     FLASH FLOOD      3 W PINGREE GROVE       42.07N 88.47W
06/26/2018                   KANE               IL   TRAINED SPOTTER

            IMPASSABLE STANDING WATER ON ROUTE 47. RELAYED VIA
            SPOTTER NETWORK.

&&

RC

Local storm report, Jun 26, 6:47 PM CDT, 4 hours 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
647 PM CDT TUE JUN 26 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0636 PM     FLASH FLOOD      4 SE HAMPSHIRE          42.06N 88.46W
06/26/2018                   KANE               IL   TRAINED SPOTTER

            6 TO 7 INCHES OF FLOWING WATER ACROSS ROUTE 47 AT PLANK
            ROAD. RELAYED BY KANE COUNTY ARES.

&&

RC

Special weather statement, Jun 26, 6:49 PM CDT, 4 hours 7 minutes before

Special Weather Statement
National Weather Service Chicago/Romeoville Il
649 PM CDT TUE JUN 26 2018

ILZ005-006-013-014-022-270015-
Lake IL-McHenry IL-Cook IL-DuPage IL-Will IL-
649 PM CDT TUE JUN 26 2018

...SIGNIFICANT WEATHER ADVISORY FOR LAKE...CENTRAL WILL...
NORTHEASTERN MCHENRY...DUPAGE AND COOK COUNTIES UNTIL 715 PM CDT...

At 648 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Round Lake to Frankfort. Movement was northeast
at 25 mph.

Funnel clouds, winds in excess of 40 mph, and occasional lightning
will be likely with some of these storms.

In addition, brief but very heavy rainfall is occurring with these
storms. This could result in localized flooding, especially given
the recent wet conditions. Remember, do not cross flooded roads.

Locations impacted include...
Chicago, Joliet, Naperville, Waukegan, Cicero, Arlington Heights,
Evanston, Schaumburg, Bolingbrook, Palatine, Skokie, Des Plaines,
Orland Park, Tinley Park, Oak Lawn, Berwyn, Mount Prospect, Wheaton,
Hoffman Estates and Oak Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 4249 8780 4238 8781 4236 8783 4227 8783
      4213 8774 4206 8767 4190 8761 4190 8760
      4188 8762 4183 8760 4176 8756 4175 8753
      4153 8753 4126 8809 4250 8826
TIME...MOT...LOC 2348Z 208DEG 20KT 4236 8810 4152 8783

BMD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 26, 7:35 PM CDT	Areal Flood Warning	LOT	Boone, Lake, McHenry	115 min
Jun 26, 8:26 PM CDT	Areal Flood Warning	LOT	Kane	12 hr
Jun 26, 9:21 PM CDT	River Flood Advisory	LOT	Winnebago	46 hr
Jun 26, 9:21 PM CDT	River Flood Advisory	LOT	Winnebago	13 hr
Jun 26, 9:25 PM CDT	River Flood Warning	LOT	Ogle	33 hr
Jun 26, 9:28 PM CDT	River Flood Advisory	LOT	Boone	5 days
Jun 26, 9:29 PM CDT	Areal Flood Warning	LOT	Lake, McHenry	9 hr
Jun 26, 9:32 PM CDT	River Flood Warning	LOT	Winnebago	3 days
Jun 26, 10:56 PM CDT	River Flood Warning	LOT	Lake	4 days
Jun 27, 6:50 AM CDT	River Flood Advisory	LOT	Winnebago	37 hr
Jun 27, 2:09 PM CDT	River Flood Advisory	LOT	LaSalle	36 hr
Jun 27, 3:09 PM CDT	Excessive Heat Watch	LOT	Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 10 more	36 hr

Nearby

River Flood Warnings in Illinois, 2018 Every river flood warning 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; the gauge from the NWS water service and the USGS.