Alert archive / Illinois / River Flood Advisories in 2021

River Flood Advisory 32, NWS Chicago, IL

October 25, 2021DuPage County, Will County, Illinois

NWS Chicago, IL issued this river flood advisory at Oct 25, 2021, 3:02 AM CDT for DuPage County, Will County, Illinois. It was in force for 36 hr.

The area

The counties it named.

The facts

Issued: Oct 25, 2021, 3:02 AM CDT (08:02 UTC)
Expired: Oct 26, 2021, 2:56 PM CDT
In force: 36 hr
Issued by: NWS Chicago, IL
Area: Storm-based polygon

Counties DuPage County, IL, Will County, IL

The radar

The Chicago radar (KLOT), 7 km from the middle of the area, began a volume at 08:06 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 18.86 ft at Oct 25, 2021, 1:00 PM CDT.

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 advisory 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 advisory went out at Oct 25, 12:26 AM CDT, 2 hours 36 minutes earlier.

Area forecast discussion, Oct 25, 12:26 AM CDT, 2 hours 36 minutes before

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Hazardous weather outlook, Oct 24, 3:55 PM CDT, 11 hours 7 minutes before

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
355 PM CDT Sun Oct 24 2021

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-252100-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
355 PM CDT Sun Oct 24 2021 /455 PM EDT Sun Oct 24 2021/

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

.DAY ONE...Tonight.

Weather hazards expected...

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

DISCUSSION...

Rain, heavy at times will continue through this evening. Locally
heavy rainfall totals could result in flooding, particularly south
of I-80.

Scattered thunderstorms are likely, especially this evening and
south of I-80. There is a small threat of severe thunderstorms
south of Illinois Route 24 this evening.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Monday...
  Elevated Non Thunderstorm Wind Risk, mainly near the lake.
  Significant Lakeshore Flood Risk.

.SPOTTER INFORMATION STATEMENT...

  Spotters may be needed south of IL Route 24 this evening.

GENERAL STORM MOTION OF THE DAY:

  Moving toward northeast 40 mph.

LMZ740>745-252100-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
355 PM CDT Sun Oct 24 2021

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...

  Gale force winds and or very hazardous waves.
  Limited Thunderstorm Risk.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Monday...
  Gale force winds and or very hazardous waves are likely.
Tuesday...
  Hazardous conditions for small craft are likely.
Friday and Saturday...
  Hazardous conditions for small craft are likely.

- Izzi

Visit us at www.weather.gov/chicago

Follow us on Facebook, Twitter, and Youtube at:
www.facebook.com/nwschicago
www.twitter.com/nwschicago
www.youtube.com/nwschicago

In the hours before

Special weather statement, Oct 24, 9:48 PM CDT, 5 hours 14 minutes before

Special Weather Statement
National Weather Service Chicago/Romeoville
948 PM CDT Sun Oct 24 2021

ILZ032-033-039-INZ010-011-019-250345-
Livingston IL-Iroquois IL-Ford IL-Newton IN-Jasper IN-Benton IN-
948 PM CDT Sun Oct 24 2021

...Strong thunderstorms will impact portions of east central
Illinois and northwest Indiana through 1045 PM CDT...

At 947 PM CDT/1047 PM EDT/, Doppler radar was tracking strong
thunderstorms along a line extending from near Watseka to Gibson
City. Movement was northeast at 35 mph.

HAZARD...Wind gusts up to 50 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Rensselaer, Watseka, Paxton, Gibson City, Fowler, Gilman, Kentland,
Clifton, Milford, Otterbein, Chatsworth, Remington, Morocco, Onarga,
Forrest, Oxford, Sheldon, Chebanse, Goodland and Brook.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4091 8699 4084 8699 4084 8710 4048 8709
      4049 8794 4040 8793 4040 8846 4062 8847
      4100 8827 4103 8693 4091 8693
TIME...MOT...LOC 0247Z 241DEG 30KT 4072 8833 4032 8835

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

Friedlein

Local storm report, Oct 25, 1:08 AM CDT, 1 hour 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
108 AM CDT MON OCT 25 2021

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

0815 PM     NON-TSTM WND DMG 1 SSW CLARENDON HILLS   41.79N 87.96W
10/24/2021                   DUPAGE             IL   PUBLIC

            LARGE, HEALTHY TREE LIMB DOWNED, CONFIRMED
            WITH PHOTO.

&&

BB

Local storm report, Oct 25, 1:09 AM CDT, 1 hour 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
109 AM CDT MON OCT 25 2021

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

1120 PM     NON-TSTM WND GST 4 NW HARVARD            42.47N 88.66W
10/24/2021  M55 MPH          MCHENRY            IL   MESONET

            MESONET STATION IMC05 HARVARD 4 NW (MCHENRY
            DOT).

0736 PM     NON-TSTM WND GST 2 ENE REMINGTON         40.77N 87.12W
10/24/2021  M53 MPH          JASPER             IN   MESONET

            MESONET STATION IN048 1.7 E REMINGTON
            (INDOT).

1255 AM     NON-TSTM WND GST 1 SW BEACH PARK         42.42N 87.87W
10/25/2021  M53 MPH          LAKE               IL   ASOS

            ASOS STATION KUGN WAUKEGAN AIRPORT.

0916 PM     NON-TSTM WND GST 1 NNW EAST CHICAGO      41.65N 87.47W
10/24/2021  M52 MPH          LAKE               IN   MESONET

            MESONET STATION XCAV CLINE AVENUE BRIDGE.

0617 PM     NON-TSTM WND GST 1 NE MONTROSE HARBOR    41.97N 87.63W
10/24/2021  M51 MPH          LMZ741             IL   MESONET

            MESONET STATION XMTB MONTROSE BEACH LIGHT.

0920 PM     NON-TSTM WND GST HARRISON-DEVER CRIB     41.92N 87.57W
10/24/2021  M49 MPH          LMZ741             IL   MESONET

            MESONET STATION CHII2 HARRISON-DEVER CRIB.

0852 PM     NON-TSTM WND GST DUPAGE AIRPORT          41.92N 88.25W
10/24/2021  M47 MPH          DUPAGE             IL   ASOS

            ASOS STATION KDPA WEST CHICAGO - DUPAGE
            ARPT.

1118 PM     NON-TSTM WND GST 6 NW HARVARD            42.48N 88.70W
10/24/2021  M47 MPH          MCHENRY            IL   MESONET

            MESONET STATION UR442 HARVARD 6 NW (UP
            RAIL).

1150 PM     NON-TSTM WND GST 5 NW MARENGO            42.31N 88.66W
10/24/2021  M46 MPH          MCHENRY            IL   MESONET

            MESONET STATION IMC02 MARENGO 5 NW (MCHENRY
            DOT).

1152 PM     NON-TSTM WND GST 2 W SUGAR GROVE         41.77N 88.48W
10/24/2021  M46 MPH          KANE               IL   ASOS

            ASOS STATION KARR SUGAR GROVE - AURORA ARPT.

1116 PM     NON-TSTM WND GST 3 N POPLAR GROVE        42.41N 88.82W
10/24/2021  M45 MPH          BOONE              IL   MESONET

            MESONET STATION FW1332 POPLAR GROVE.

0555 PM     NON-TSTM WND GST 3 NNE PONTIAC           40.92N 88.62W
10/24/2021  M44 MPH          LIVINGSTON         IL   AWOS

            AWOS STATION KPNT PONTIAC AIRPORT.

0636 PM     NON-TSTM WND GST KANKAKEE AIRPORT        41.07N 87.85W
10/24/2021  M44 MPH          KANKAKEE           IL   AWOS

            AWOS STATION KIKK KANKAKEE AIRPORT.

0730 PM     NON-TSTM WND GST 2 N KOUTS               41.34N 87.02W
10/24/2021  M44 MPH          PORTER             IN   MESONET

            MESONET STATION FW9001 KOUTS.

0756 PM     NON-TSTM WND GST 4 ESE VALPARAISO        41.45N 87.00W
10/24/2021  M44 MPH          PORTER             IN   ASOS

            ASOS STATION KVPZ VALPARAISO AIRPORT.

0735 PM     NON-TSTM WND GST 2 WNW RENSSELAER        40.95N 87.18W
10/24/2021  M43 MPH          JASPER             IN   AWOS

            AWOS STATION KRZL RENSSELAER AIRPORT.

0952 PM     NON-TSTM WND GST 2 SE WHEELING           42.12N 87.90W
10/24/2021  M43 MPH          COOK               IL   ASOS

            ASOS STATION KPWK WHEELING - CHICAGO EXEC.
            ARPT.

1030 PM     NON-TSTM WND GST 3 ESE MICHIGAN CITY BUO 41.73N 86.91W
10/24/2021  M43 MPH          LMZ745             IN   MESONET

            MESONET STATION MCYI3 2 WNW MICHIGAN CITY.

0548 PM     NON-TSTM WND GST 1 SW WARRENVILLE        41.81N 88.18W
10/24/2021  M42 MPH          DUPAGE             IL   MESONET

            MESONET STATION FW8693 WARRENVILLE.

0654 PM     NON-TSTM WND GST 6 E ASHKUM              40.88N 87.85W
10/24/2021  M42 MPH          IROQUOIS           IL   MESONET

            MESONET STATION EW7139 ASHKUM.

0830 PM     NON-TSTM WND GST 1 SE SOUTH CHICAGO      41.73N 87.54W
10/24/2021  M42 MPH          COOK               IL   BUOY

            BUOY STATION CMTI2 CALUMET HARBOR.

1001 PM     NON-TSTM WND GST 3 W MOUNT MORRIS        42.05N 89.49W
10/24/2021  M42 MPH          OGLE               IL   MESONET

            MESONET STATION FW3055 MOUNT MORRIS.

0951 PM     NON-TSTM WND GST OHARE AIRPORT           41.98N 87.90W
10/24/2021  M41 MPH          COOK               IL   ASOS

            ASOS STATION KORD CHICAGO O''HARE.

1054 PM     NON-TSTM WND GST ROCKFORD AIRPORT        42.20N 89.10W
10/24/2021  M41 MPH          WINNEBAGO          IL   ASOS

            ASOS STATION KRFD ROCKFORD AIRPORT.

0800 PM     NON-TSTM WND GST 2 E WAUKEGAN            42.36N 87.81W
10/24/2021  M41 MPH          LMZ740             IL   MESONET

            MESONET STATION WHRI2 WAUKEGAN HARBOR.

0655 PM     NON-TSTM WND GST 2 NW PERU               41.35N 89.15W
10/24/2021  M40 MPH          LA SALLE           IL   AWOS

            AWOS STATION KVYS PERU AIRPORT.

0735 PM     NON-TSTM WND GST 1 SSW HAMMOND           41.57N 87.51W
10/24/2021  M40 MPH          LAKE               IN   MESONET

            MESONET STATION EW9197 MUNSTER.

0953 PM     NON-TSTM WND GST MIDWAY AIRPORT          41.78N 87.76W
10/24/2021  M40 MPH          COOK               IL   ASOS

            ASOS STATION KMDW CHICAGO MIDWAY.

0940 PM     NON-TSTM WND GST WILMETTE BUOY           42.13N 87.66W
10/24/2021  M40 MPH          LMZ740             IL   MESONET

            MESONET STATION 45174 4 NE KENILWORTH.

&&

Local storm report, Oct 25, 1:12 AM CDT, 1 hour 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
112 AM CDT MON OCT 25 2021

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

0100 AM     HEAVY RAIN       1 WSW BURBANK           41.74N 87.78W
10/25/2021  M2.69 INCH       COOK               IL   TRAINED SPOTTER

            3 SW MIDWAY - 24 HOUR RAINFALL OF 2.69
            INCHES.

&&

BB

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 24, 8:32 PM CDT	Special Weather Statement	LOT	Ford, Iroquois, Livingston	73 min
Oct 24, 8:44 PM CDT	River Flood Warning	LOT	Kankakee	56 hr
Oct 24, 8:44 PM CDT	River Flood Warning	LOT	Grundy, Kankakee, Will	16 hr
Oct 24, 8:56 PM CDT	River Flood Watch	LOT	Iroquois, Kankakee	15 hr
Oct 24, 8:56 PM CDT	River Flood Watch	LOT	Iroquois	36 hr
Oct 24, 9:06 PM CDT	River Flood Warning	LOT	LaSalle	47 hr
Oct 24, 9:06 PM CDT	River Flood Warning	LOT	Livingston	37 hr
Oct 24, 9:06 PM CDT	River Flood Warning	LOT	Grundy	37 hr
Oct 24, 9:16 PM CDT	River Flood Warning	LOT	Grundy, LaSalle	62 hr
Oct 24, 9:16 PM CDT	River Flood Warning	LOT	Bureau, LaSalle, Putnam	11 days
Oct 24, 9:16 PM CDT	River Flood Warning	LOT	LaSalle	64 hr
Oct 24, 9:48 PM CDT	Special Weather Statement	LOT	Ford, Iroquois	57 min
Oct 24, 9:53 PM CDT	Areal Flood Advisory	LOT	Ford, Iroquois	6 hr
Oct 24, 10:02 PM CDT	Areal Flood Advisory	LOT	Grundy, Kendall, LaSalle, Will	4 hr
Oct 25, 6:02 AM CDT	River Flood Warning	LOT	Cook	26 hr
Oct 25, 11:36 AM CDT	River Flood Warning	LOT	Iroquois	64 hr
Oct 25, 11:39 AM CDT	River Flood Advisory	LOT	Will	3 hr
Oct 25, 12:26 PM CDT	River Flood Advisory	LOT	Grundy, Kankakee, Will	7 days
Oct 25, 6:56 PM CDT	Small Craft Advisory	LOT		26 hr
Oct 24, 8:44 PM CDT	River Flood Advisory	LOT	Lake, Newton	4 days
Oct 24, 8:56 PM CDT	River Flood Watch	LOT	Newton	16 hr
Oct 24, 8:56 PM CDT	River Flood Warning	LOT	Jasper	3 days
Oct 25, 12:26 PM CDT	River Flood Advisory	LOT	Newton	9 days

Nearby

River Flood Advisories in Illinois, 2021 Every river flood advisory in 2021

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.