Alert archive / Illinois / River Flood Warnings in 2018

River Flood Warning 33, NWS Chicago, IL

February 20, 2018Boone County, Illinois

NWS Chicago, IL issued this river flood warning at Feb 20, 2018, 11:46 AM CST for Boone County, Illinois. It took effect at Feb 21, 2018, 12:00 AM CST. It was in force for 39 hr.

The area

The counties it named.

The facts

Issued: Feb 20, 2018, 11:46 AM CST (17:46 UTC)
In effect from: Feb 21, 2018, 12:00 AM CST
Expired: Feb 22, 2018, 2:55 PM CST
In force: 39 hr
Issued by: NWS Chicago, IL
Area: Storm-based polygon
Flood severity: Minor

County Boone County, IL

The radar

The Milwaukee radar (KMKX), 75 km from the middle of the area, began a volume at 17:46 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 Kishwaukee River at Belvidere (BVDI2). The gauge peaked at 10.85 ft at Feb 21, 2018, 6:00 PM CST.

Action stage: 6 ft
Minor stage: 9 ft
Moderate stage: 10 ft
Major stage: 12 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05438500, 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 Feb 20, 11:24 AM CST, 22 minutes earlier.

Area forecast discussion, Feb 20, 11:24 AM CST, 22 minutes before

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Hazardous weather outlook, Feb 20, 3:47 AM CST, 7 hours 59 minutes before

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
347 AM CST Tue Feb 20 2018

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
211000-
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-
347 AM CST Tue Feb 20 2018 /447 AM EST Tue Feb 20 2018/

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

.DAY ONE...Today and Tonight.

WEATHER HAZARDS EXPECTED:
  Limited Thunderstorm Risk.
  Extreme Flooding Risk.
  Elevated Fog Risk.
  Elevated Ice Accumulation Risk.

DISCUSSION:

Rain and occasional thunderstorms will continue today into
tonight. 1 to 2 inches of rain has already fallen since Monday
in many areas, and additional amounts of 1 to locally 3 inches
are possible through tonight. This will cause flooding, and
significant sharp rises on most area rivers and creeks. A cold
front will move across the area tonight, and rain may turn to
freezing rain for a time behind the front, or may mix with sleet
or snow briefly before ending. Some ice accumulation and glazing
is possible overnight.

Many area rivers will go into flood today or tonight.

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

Wednesday...
  Limited Ice Accumulation Risk.
  Limited Snow or Sleet Risk.
Thursday...
  Elevated Ice Accumulation Risk.
Friday...
  Limited Ice Accumulation Risk.

DISCUSSION:

A couple of periods of light freezing rain or sleet are
possible Wednesday night into early Thursday, and Thursday night
into early Friday across portions of the outlook area.

Most area rivers will remain in or near flood for the next
several days.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

&&

LMZ740>745-211000-
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-
347 AM CST Tue Feb 20 2018

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS NEARSHORE
WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE WATERS OF LAKE
MICHIGAN.

.DAY ONE...Today and Tonight.

  Limited Thunderstorm Risk.
  Elevated Fog Risk.
  Hazardous Conditions for Small Craft are likely.

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

Saturday and Sunday...
  Hazardous Conditions for Small Craft are likely.

&&

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-211000-
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-
347 AM CST Tue Feb 20 2018

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

.DAY ONE...Today and Tonight.

Elevated Fog Risk on the southern portion of the lake.

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

No hazardous weather is expected at this time.

&&

Ratzer

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In the hours before

Local storm report, Feb 20, 7:05 AM CST, 4 hours 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
705 AM CST TUE FEB 20 2018

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

0700 AM     HEAVY RAIN       3 SW MIDWAY AIRPORT     41.75N 87.79W
02/20/2018  M2.18 INCH       COOK               IL   CO-OP OBSERVER

&&

BMD

Local storm report, Feb 20, 7:12 AM CST, 4 hours 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
712 AM CST TUE FEB 20 2018

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

0600 AM     HEAVY RAIN       1 N GRIFFITH            41.54N 87.42W
02/20/2018  M2.30 INCH       LAKE               IN   COCORAHS

            24 HOUR RAINFALL.

0600 AM     HEAVY RAIN       HYDE PARK               41.79N 87.59W
02/20/2018  M2.28 INCH       COOK               IL   COCORAHS

            24 HOUR RAINFALL.

0630 AM     HEAVY RAIN       CROWN POINT             41.42N 87.36W
02/20/2018  M2.79 INCH       LAKE               IN   CO-OP OBSERVER

            24 HOUR RAINFALL.

0700 AM     HEAVY RAIN       PARK FOREST             41.48N 87.69W
02/20/2018  M2.49 INCH       COOK               IL   CO-OP OBSERVER

            24 HOUR RAINFALL.

0700 AM     HEAVY RAIN       AURORA                  41.77N 88.29W
02/20/2018  M1.80 INCH       KANE               IL   CO-OP OBSERVER

            24 HOUR RAINFALL.

&&

KLUBER

Local storm report, Feb 20, 7:45 AM CST, 4 hours 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
745 AM CST TUE FEB 20 2018

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

0700 AM     HEAVY RAIN       PEOTONE                 41.33N 87.80W
02/20/2018  M2.51 INCH       WILL               IL   CO-OP OBSERVER

            24 HOUR RAINFALL.

0700 AM     HEAVY RAIN       4 NNW COAL CITY         41.34N 88.31W
02/20/2018  M2.11 INCH       GRUNDY             IL   CO-OP OBSERVER

            24 HOUR RAINFALL.

0700 AM     HEAVY RAIN       WATSEKA                 40.78N 87.73W
02/20/2018  M1.60 INCH       IROQUOIS           IL   CO-OP OBSERVER

            24 HOUR RAINFALL.

0700 AM     HEAVY RAIN       DWIGHT                  41.10N 88.42W
02/20/2018  M1.50 INCH       LIVINGSTON         IL   CO-OP OBSERVER

            24 HOUR RAINFALL.

0700 AM     HEAVY RAIN       FAIRBURY                40.75N 88.51W
02/20/2018  M2.02 INCH       LIVINGSTON         IL   CO-OP OBSERVER

            24 HOUR RAINFALL.

&&

KLUBER

Local storm report, Feb 20, 7:52 AM CST, 3 hours 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
752 AM CST TUE FEB 20 2018

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

0700 AM     HEAVY RAIN       6 E ASHKUM              40.88N 87.84W
02/20/2018  M2.82 INCH       IROQUOIS           IL   COCORAHS

            24 HOUR RAINFALL.

0700 AM     HEAVY RAIN       SW ST. ANNE             41.02N 87.72W
02/20/2018  M3.52 INCH       KANKAKEE           IL   CO-OP OBSERVER

            24 HOUR RAINFALL.

&&

KLUBER

Local storm report, Feb 20, 8:43 AM CST, 3 hours 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
843 AM CST TUE FEB 20 2018

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

0630 AM     HEAVY RAIN       PAXTON                  40.46N 88.10W
02/20/2018  M1.67 INCH       FORD               IL   CO-OP OBSERVER

            24 HOUR RAINFALL.

0700 AM     HEAVY RAIN       5 S DE MOTTE            41.13N 87.20W
02/20/2018  M3.00 INCH       JASPER             IN   COCORAHS

            24 HOUR RAINFALL.

0700 AM     HEAVY RAIN       PLAINFIELD              41.62N 88.20W
02/20/2018  M1.98 INCH       WILL               IL   CO-OP OBSERVER

            24 HOUR RAINFALL.

0700 AM     HEAVY RAIN       CHATSWORTH              40.75N 88.29W
02/20/2018  M2.50 INCH       LIVINGSTON         IL   CO-OP OBSERVER

            24 HOUR RAINFALL.

0700 AM     HEAVY RAIN       2 E CRETE               41.45N 87.58W
02/20/2018  M3.07 INCH       WILL               IL   COCORAHS

            24 HOUR RAINFALL.

0800 AM     HEAVY RAIN       LAKE VILLAGE            41.13N 87.43W
02/20/2018  M3.75 INCH       NEWTON             IN   CO-OP OBSERVER

            24 HOUR RAINFALL.

0800 AM     HEAVY RAIN       MANHATTAN               41.43N 87.99W
02/20/2018  M2.20 INCH       WILL               IL   CO-OP OBSERVER

            24 HOUR RAINFALL.

0800 AM     HEAVY RAIN       MORRIS                  41.37N 88.43W
02/20/2018  M1.99 INCH       GRUNDY             IL   CO-OP OBSERVER

            24 HOUR RAINFALL.

&&

KLUBER

Special weather statement, Feb 20, 10:30 AM CST, 1 hour 16 minutes before

SPECIAL WEATHER STATEMENT
National Weather Service Chicago/Romeoville IL
1030 AM CST Tue Feb 20 2018

ILZ003>006-008-010>012-201800-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-DeKalb-Kane-
Including the cities of Rockford, Belvidere, Woodstock, Waukegan,
Oregon, Dixon, DeKalb, Aurora, and Elgin
1030 AM CST Tue Feb 20 2018

...Patchy Dense Fog in Parts of Northern Illinois...

Patchy dense fog with visibility of one quarter mile or less in
spots will continue through mid day in parts of northern Illinois,
especially west of the Fox River valley. Be alert for
significantly reduced visibility and rapid changes in visibility.
Slow down and use low beams if you encounter dense fog while
driving. Showers and thunderstorms overspreading the area will
help visibility improve by around mid day.

RC

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 19, 8:24 PM CST	Dense Fog Advisory	LOT	Boone, DeKalb, Kane, Lake, Lee, McHenry and 2 more	5 hr
Feb 19, 8:31 PM CST	River Flood Advisory	LOT	Cook	36 hr
Feb 19, 8:33 PM CST	River Flood Warning	LOT	Cook	67 hr
Feb 19, 9:13 PM CST	River Flood Warning	LOT	Will	3 days
Feb 19, 9:19 PM CST	River Flood Watch	LOT	Kane, McHenry	51 hr
Feb 19, 9:19 PM CST	River Flood Watch	LOT	Kane, Kendall	4 days
Feb 19, 9:19 PM CST	River Flood Watch	LOT	LaSalle	4 days
Feb 19, 9:29 PM CST	River Flood Warning	LOT	DuPage	56 hr
Feb 19, 9:52 PM CST	River Flood Warning	LOT	Iroquois, Kankakee	8 days
Feb 19, 10:01 PM CST	River Flood Watch	LOT	Winnebago	3 days
Feb 19, 10:16 PM CST	River Flood Advisory	LOT	Lee	36 hr
Feb 19, 10:21 PM CST	River Flood Warning	LOT	Grundy, Will	8 days
Feb 19, 10:44 PM CST	Areal Flood Warning	LOT	Cook, DeKalb, DuPage, Ford, Grundy, Iroquois and 8 more	12 hr
Feb 19, 11:46 PM CST	River Flood Advisory	LOT	Will	36 hr
Feb 20, 2:49 AM CST	Marine Dense Fog Advisory	LOT		18 hr
Feb 20, 3:17 AM CST	River Flood Advisory	LOT	Grundy	36 hr
Feb 20, 3:27 AM CST	River Flood Warning	LOT	Kane, McHenry	12 days
Feb 20, 3:27 AM CST	River Flood Warning	LOT	Kane, Kendall	11 days
Feb 20, 3:27 AM CST	River Flood Warning	LOT	LaSalle	4 days
Feb 20, 3:45 AM CST	River Flood Advisory	LOT	Cook	36 hr
Feb 20, 3:51 AM CST	River Flood Advisory	LOT	DeKalb	36 hr
Feb 20, 6:16 AM CST	River Flood Advisory	LOT	Boone	3 days
Feb 20, 8:28 AM CST	River Flood Warning	LOT	Lake	6 days
Feb 20, 8:28 AM CST	River Flood Warning	LOT	Lake	7 days
Feb 20, 9:34 AM CST	River Flood Warning	LOT	Winnebago	4 days
Feb 20, 10:00 AM CST	River Flood Advisory	LOT	Winnebago	24 hr
Feb 20, 10:19 AM CST	River Flood Warning	LOT	Winnebago	12 days
Feb 20, 10:19 AM CST	River Flood Warning	LOT	Ogle	10 days
Feb 20, 10:39 AM CST	River Flood Warning	LOT	Winnebago	14 days
Feb 20, 10:45 AM CST	Areal Flood Warning	LOT	Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more	24 hr
Feb 20, 10:56 AM CST	River Flood Advisory	LOT	Lake	58 hr
Feb 20, 10:56 AM CST	River Flood Advisory	LOT	Cook	67 hr
Feb 20, 11:01 AM CST	River Flood Warning	LOT	Cook	66 hr
Feb 20, 11:01 AM CST	River Flood Warning	LOT	Cook	52 hr
Feb 20, 11:59 AM CST	River Flood Warning	LOT	LaSalle	4 days
Feb 20, 12:44 PM CST	River Flood Warning	LOT	Grundy	47 hr
Feb 20, 1:21 PM CST	River Flood Warning	LOT	Will	53 hr
Feb 20, 1:21 PM CST	Special Marine Warning	LOT		84 min
Feb 20, 1:27 PM CST	Special Weather Statement	LOT	Cook, Will	48 min
Feb 20, 2:26 PM CST	Special Weather Statement	LOT	Ford, Iroquois	64 min
Feb 20, 2:49 PM CST	River Flood Warning	LOT	Cook	52 hr
Feb 20, 2:56 PM CST	River Flood Warning	LOT	Winnebago	12 days
Feb 20, 2:56 PM CST	River Flood Warning	LOT	Lee	65 hr
Feb 20, 3:31 PM CST	Winter Weather Advisory	LOT	DeKalb, DuPage, Ford, Grundy, Iroquois, Kane and 6 more	15 hr
Feb 20, 4:06 PM CST	Small Craft Advisory	LOT		29 hr
Feb 19, 9:52 PM CST	River Flood Warning	LOT	Jasper	11 days
Feb 20, 3:00 AM CST	River Flood Warning	LOT	Lake	31 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.