Alert archive / Illinois / River Flood Warnings in 2017

River Flood Warning 47, NWS Chicago, IL

April 6, 2017Will County, Illinois

NWS Chicago, IL issued this river flood warning at Apr 6, 2017, 2:41 PM CDT for Will County, Illinois. It took effect at Apr 6, 2017, 7:00 PM CDT. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued
Apr 6, 2017, 2:41 PM CDT (19:41 UTC)
In effect from
Apr 6, 2017, 7:00 PM CDT
Expired
Apr 7, 2017, 7:00 AM CDT
In force
12 hr
Issued by
NWS Chicago, IL
Area
Storm-based polygon
Flood severity
Minor

County Will County, IL

The radar

The Chicago radar (KLOT), 20 km from the middle of the area, began a volume at 19:42 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 East Branch Du Page River at Bolingbrook (BOLI2). The gauge peaked at 19.34 ft at Apr 6, 2017, 2:00 PM CDT.

actionminormoderate1618202204/0604/0704/08
Action stage
18 ft
Minor stage
20 ft
Moderate stage
22 ft
Major stage
24 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05540250, 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 Apr 6, 2:18 PM CDT, 23 minutes earlier.

Area forecast discussion, Apr 6, 2:18 PM CDT, 23 minutes before
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Hazardous weather outlook, Apr 6, 11:15 AM CDT, 3 hours 26 minutes before
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1115 AM CDT Thu Apr 6 2017

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
071615-
Winnebago-Boone-McHenry-Lake Illinois-Ogle-Lee-De Kalb-Kane-
DuPage-Cook-La Salle-Kendall-Grundy-Will-Kankakee-Livingston-
Iroquois-Ford-Lake Indiana-Porter-Newton-Jasper-Benton-
1115 AM CDT Thu Apr 6 2017 /1215 PM EDT Thu Apr 6 2017/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...This Afternoon and Tonight.

WEATHER HAZARDS EXPECTED:

  Significant Non Thunderstorm Wind Risk.
  Limited Flooding Risk.

DISCUSSION:

Wind gusts of 40 to 45 mph will be observed today across far
northeast Illinois and northwest Indiana, with gusts of up to
60 mph near the immediate lake shore across northwest Indiana.

Moderate rainfall through earlier this morning will
continue to cause localized flooding, and some creeks
and streams will rise over bankfull from the recent rainfall.

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

Friday and Saturday...
  Elevated Frost Risk.
Sunday...
  Limited Thunderstorm Risk.
Monday...
  Elevated Thunderstorm Risk.

DISCUSSION:

Thunderstorm potential increases late Sunday night through the
day and evening on Monday. At this time, it appears there could
be a severe weather threat in the region.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

&&

LMZ740>745-071615-
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-
1115 AM CDT Thu Apr 6 2017

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE illinois NEARSHORE
WATERS OF LAKE MICHIGAN AND THE indiana NEARSHORE WATERS OF LAKE
MICHIGAN.

.DAY ONE...This Afternoon and Tonight.

Storm Force Winds or Extremely Hazardous Waves are likely, with
the strongest winds and highest waves across northwest Indiana.

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

Friday...
  Gale Force Winds or Very Hazardous Waves are likely.
Saturday through Monday...
  Hazardous Conditions for Small Craft are likely.

&&

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-071615-
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 from Pentwater to Manistee MI 5 NM offshore to Mid
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-
1115 AM CDT Thu Apr 6 2017

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE
MICHIGAN.

.DAY ONE...This Afternoon and Tonight.

Gale force winds will continue with storm force winds across the
south today.

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

Gale force winds will continue into the day Friday, mainly across
the south.

There is a chance of thunderstorms Sunday night through Monday
night.

&&

KMD/MTF

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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 5, 9:05 PM CDTRiver Flood WarningLOTLaSalle58 hr
Apr 6, 9:46 AM CDTRiver Flood AdvisoryLOTCook29 hr
Apr 6, 9:54 AM CDTRiver Flood WarningLOTCook21 hr
Apr 6, 10:37 AM CDTRiver Flood AdvisoryLOTCook36 hr
Apr 6, 10:37 AM CDTRiver Flood AdvisoryLOTWill36 hr
Apr 6, 10:59 AM CDTRiver Flood WarningLOTCook13 hr
Apr 6, 11:05 AM CDTRiver Flood AdvisoryLOTLake36 hr

Nearby

River Flood Warnings in Illinois, 2017Every river flood warning in 2017

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.