Alert archive / Illinois / River Flood Warnings in 2018

River Flood Warning 71, NWS Chicago, IL

June 20, 2018Iroquois County, Illinois

NWS Chicago, IL issued this river flood warning at Jun 20, 2018, 8:39 PM CDT for Iroquois County, Illinois. It took effect at Jun 22, 2018, 8:17 AM CDT. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Jun 20, 2018, 8:39 PM CDT (01:39 UTC)
In effect from
Jun 22, 2018, 8:17 AM CDT
Expired
Jun 22, 2018, 10:42 AM CDT
In force
2 hr
Issued by
NWS Chicago, IL
Area
Storm-based polygon
Flood severity
Minor

County Iroquois County, IL

The radar

The Chicago radar (KLOT), 98 km from the middle of the area, began a volume at 01:41 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 Sugar Creek (E-IL) at Milford (MILI2). The gauge peaked at 15.99 ft at Jun 23, 2018, 10:00 AM CDT.

actionminormoderate510152006/2106/2206/23
Action stage
15 ft
Minor stage
18 ft
Moderate stage
22 ft
Major stage
26 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05525500, 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 20, 6:47 PM CDT, 1 hour 52 minutes earlier.

Area forecast discussion, Jun 20, 6:47 PM CDT, 1 hour 52 minutes before
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Hazardous weather outlook, Jun 20, 5:45 PM CDT, 2 hours 54 minutes before
Hazardous Weather Outlook...CORRECTED
National Weather Service Chicago/Romeoville IL
545 PM CDT Wed Jun 20 2018

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
212045-
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-
545 PM CDT Wed Jun 20 2018 /645 PM EDT Wed Jun 20 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.
  Limited Flooding Risk.

DISCUSSION...

Thunderstorms are expected to increase in coverage initially
across north central Illinois early this evening, and then for the
remainder of northeast Illinois and northwest Indiana late this
evening and overnight. Widespread severe weather is not expected
at this time, however, a few stronger storms capable of gusty
winds are possible along and west of the I-39 corridor this
evening. Heavy rainfall and localized flooding will be possible
with any storm tonight.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Thursday...
  Limited Severe Thunderstorm Risk.
  Elevated Flooding Risk.
  High Swim Risk
Friday...
  Limited Flooding Risk.
  Limited Thunderstorm Risk.
  High Swim Risk
Sunday...
  Limited Thunderstorm Risk.
Tuesday...
  Limited Thunderstorm Risk.

DISCUSSION:

Thunderstorms are once again expected area wide on Thursday, with
strong to severe storms possible Thursday afternoon into Thursday
evening south of I-80. Heavy rainfall and flooding will once
again be possible with any storm Thursday. The heavy rain
potential will continue Thursday night into Friday morning.

.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 20 MPH.

LMZ740>745-212045-
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-
545 PM CDT Wed Jun 20 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.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Thursday...
  Hazardous conditions for small craft are likely.
  Limited Thunderstorm Risk.
Friday...
  Limited Thunderstorm Risk.
Sunday...
  Limited Thunderstorm Risk.
Tuesday...
  Limited Thunderstorm Risk.

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-212045-
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-
545 PM CDT Wed Jun 20 2018

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

.DAY ONE...Tonight.

Weather hazards expected...

  Limited Thunderstorm Risk.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Thursday through Sunday...
  Limited Thunderstorm Risk.
Tuesday...
  Limited Thunderstorm Risk.

Rodriguez

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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 20, 8:34 PM CDTRiver Flood AdvisoryLOTWill14 hr
Jun 20, 8:34 PM CDTRiver Flood AdvisoryLOTKane, McHenry7 days
Jun 20, 8:34 PM CDTRiver Flood AdvisoryLOTLaSalle3 days
Jun 20, 8:39 PM CDTRiver Flood WarningLOTOgle48 hr
Jun 20, 10:44 PM CDTAreal Flood AdvisoryLOTFord, Iroquois, LaSalle, Livingston3 hr
Jun 21, 3:18 AM CDTSmall Craft AdvisoryLOT48 hr
Jun 21, 3:28 AM CDTFlash Flood WatchLOTBoone, DeKalb, DuPage, Grundy, Kane, Kendall and 6 more34 hr
Jun 21, 3:33 AM CDTBeach Hazards StatementLOTLake48 hr
Jun 21, 7:46 AM CDTAreal Flood AdvisoryLOTCook, DuPage, Grundy, Iroquois, Kane, Kankakee and 5 more4 hr
Jun 21, 9:39 AM CDTRiver Flood WarningLOTBoone25 hr
Jun 21, 10:10 AM CDTRiver Flood WarningLOTLake11 days
Jun 21, 10:10 AM CDTRiver Flood WarningLOTWill3 days
Jun 21, 10:20 AM CDTRiver Flood AdvisoryLOTCook5 days
Jun 21, 10:20 AM CDTRiver Flood AdvisoryLOTCook63 hr
Jun 21, 10:20 AM CDTRiver Flood AdvisoryLOTWill3 days
Jun 21, 10:20 AM CDTRiver Flood AdvisoryLOTGrundy48 hr
Jun 21, 10:20 AM CDTRiver Flood AdvisoryLOTLake57 hr
Jun 21, 10:34 AM CDTRiver Flood WarningLOTKane, McHenry13 days
Jun 21, 10:34 AM CDTRiver Flood WarningLOTMcHenry21 days
Jun 21, 10:34 AM CDTRiver Flood WarningLOTKane, Kendall11 days
Jun 21, 10:34 AM CDTRiver Flood WarningLOTLaSalle3 days
Jun 21, 10:34 AM CDTRiver Flood WarningLOTLaSalle61 hr
Jun 21, 10:57 AM CDTAreal Flood AdvisoryLOTBoone, DeKalb, McHenry, Ogle, Winnebago4 hr
Jun 21, 11:18 AM CDTRiver Flood WarningLOTBureau, LaSalle, Putnam9 days
Jun 21, 11:22 AM CDTRiver Flood AdvisoryLOTLaSalle24 hr
Jun 21, 11:44 AM CDTAreal Flood WarningLOTCook, DuPage, Will9 hr
Jun 21, 11:56 AM CDTAreal Flood AdvisoryLOTKane, Lake, McHenry3 hr
Jun 21, 1:44 PM CDTRiver Flood WarningLOTCook20 hr
Jun 21, 1:44 PM CDTRiver Flood WarningLOTCook45 hr
Jun 21, 3:51 PM CDTRiver Flood WarningLOTCook4 days
Jun 21, 3:51 PM CDTRiver Flood WarningLOTCook52 hr
Jun 21, 3:51 PM CDTRiver Flood WarningLOTWill56 hr
Jun 21, 3:51 PM CDTRiver Flood WarningLOTDuPage42 hr
Jun 21, 4:07 PM CDTRiver Flood AdvisoryLOTLake19 hr
Jun 21, 4:07 PM CDTRiver Flood AdvisoryLOTCook3 days
Jun 21, 5:13 PM CDTAreal Flood AdvisoryLOTLaSalle, Livingston3 hr
Jun 21, 5:50 PM CDTAreal Flood AdvisoryLOTLaSalle, Livingston3 hr
Jun 21, 6:19 PM CDTAreal Flood AdvisoryLOTDeKalb, Grundy, Kane, Kendall, LaSalle, Lee and 1 more3 hr
Jun 21, 1:44 PM CDTRiver Flood WarningLOTLake21 hr
Jun 21, 3:51 PM CDTRiver Flood WarningLOTLake, Newton24 hr
Jun 21, 4:07 PM CDTRiver Flood AdvisoryLOTJasper, Porter6 hr
Jun 21, 4:07 PM CDTRiver Flood AdvisoryLOTNewton64 hr

Nearby

River Flood Warnings in Illinois, 2018Every 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.