Alert archive / Illinois / River Flood Warnings in 2017

River Flood Warning 97, NWS Chicago, IL

July 12, 2017Cook County, Illinois

NWS Chicago, IL issued this river flood warning at Jul 12, 2017, 4:15 AM CDT for Cook County, Illinois. It took effect at Jul 12, 2017, 1:20 PM CDT. It was in force for 14 days.

The area

The counties it named.

The facts

Issued: Jul 12, 2017, 4:15 AM CDT (09:15 UTC)
In effect from: Jul 12, 2017, 1:20 PM CDT
Expired: Jul 26, 2017, 9:55 AM CDT
In force: 14 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 09:15 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 19.92 ft at Jul 14, 2017, 6:00 AM 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 Jul 12, 3:23 AM CDT, 52 minutes earlier.

Area forecast discussion, Jul 12, 3:23 AM CDT, 52 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Hazardous weather outlook, Jul 11, 3:37 PM CDT, 12 hours 38 minutes before

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
337 PM CDT Tue Jul 11 2017

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
122045-
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-
337 PM CDT Tue Jul 11 2017 /437 PM EDT Tue Jul 11 2017/

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

.DAY ONE...Tonight.

WEATHER HAZARDS EXPECTED:
  Elevated Thunderstorm Risk...with an associated:
      Elevated Hail Risk...up to quarter size.
      Elevated Thunderstorm Wind Damage Risk...up to 60 MPH.
  Elevated Flooding Risk.

DISCUSSION:

Scattered thunderstorms are expected along a warm front over northwestern
Illinois late this evening, before shifting east-northeastward
across portions of north central and far northeastern Illinois later
overnight. Along with a hail and wind threat, these storms
will also be capable of producing heavy rainfall. The Interstate 88
corridor northward is favored at this time. It is possible the greater
threat may stay north of the Wisconsin border until very late tonight.

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

Wednesday...
  Elevated Flooding Risk.
  Elevated Severe Thunderstorm Risk.
  Elevated Excessive Heat Risk.
Thursday...
  Limited Severe Thunderstorm Risk.
  Limited Excessive Heat Risk.
Friday through Sunday...
  Limited Thunderstorm Risk.

DISCUSSION:

Periodic chances for showers and thunderstorms are likely through
Thursday. Very heavy rainfall will be possible with these
thunderstorms. There is also a risk of severe thunderstorms,
particularly late Wednesday afternoon and evening.

Heat index values of 100 to 105 degrees are expected on
Wednesday.

In addition...flooding is expected along portions of the Des
Plaines River in Lake County, Illinois.

.SPOTTER INFORMATION STATEMENT...

Spotters will likely be needed tonight.

GENERAL STORM MOTION OF THE DAY:

Moving to the east at around 30 mph.

&&

LMZ740>745-122045-
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-
337 PM CDT Tue Jul 11 2017

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

.DAY ONE...Tonight.

  Elevated Thunderstorm Risk.

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

Wednesday...
  Elevated Thunderstorm Risk.
Thursday...
  Limited Thunderstorm Risk.
Saturday night into early Sunday...
  Limited Thunderstorm Risk.

&&

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-122045-
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-
337 PM CDT Tue Jul 11 2017

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

.DAY ONE...Tonight.

There is a chance of thunderstorms tonight.

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

Thunderstorms are possible through Thursday, with a smaller chance
on Saturday night.

&&

Visit us at http://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, Jul 11, 11:37 PM CDT, 4 hours 38 minutes before

Special Weather Statement
National Weather Service Chicago/Romeoville Il
1137 PM CDT TUE JUL 11 2017

ILZ012>014-120500-
Kane IL-Cook IL-DuPage IL-
1137 PM CDT TUE JUL 11 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN KANE...NORTHWESTERN
DUPAGE AND NORTHWESTERN COOK COUNTIES UNTIL MIDNIGHT CDT...

At 1137 PM CDT, Doppler radar was tracking a strong thunderstorm near
Elgin, moving east at 25 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Elgin, Schaumburg, Palatine, Hoffman Estates, Carol Stream, St.
Charles, West Chicago, Roselle, East Dundee, Bartlett, Streamwood,
Hanover Park, Inverness, Wayne, Bloomingdale, South Elgin and South
Barrington.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4196 8836 4207 8833 4209 8807 4190 8813
TIME...MOT...LOC 0437Z 274DEG 20KT 4200 8826

RATZER

Local storm report, Jul 11, 11:58 PM CDT, 4 hours 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1158 PM CDT TUE JUL 11 2017

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

1140 PM     FLASH FLOOD      ELGIN                   42.04N 88.29W
07/11/2017                   KANE               IL   LAW ENFORCEMENT

            NUMERIOUS ROADS FLOODED AND IMPASSABLE. BASEMENTS ACROSS
            THE AREA ALSO FLOODED.

&&

KBIRK

Local storm report, Jul 12, 12:20 AM CDT, 3 hours 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1220 AM CDT WED JUL 12 2017

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

1115 PM     FLASH FLOOD      PINGREE GROVE           42.07N 88.41W
07/11/2017                   KANE               IL   PUBLIC

            PUBLIC REPORT OF MULTIPLE CARS STUCK IN WATER NEAR ROUTE
            47 AND ROUTE 72 NEAR PINGREE GROVE. MANY ROADS WEST OF
            ELGIN NOT PASSIBLE. VIA SOCIAL MEDIA.

&&

RATZER

Special weather statement, Jul 12, 12:57 AM CDT, 3 hours 18 minutes before

Special Weather Statement
National Weather Service Chicago/Romeoville Il
1257 AM CDT WED JUL 12 2017

ILZ005-006-120630-
Lake IL-McHenry IL-
1257 AM CDT WED JUL 12 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN LAKE AND
NORTHEASTERN MCHENRY COUNTIES UNTIL 130 AM CDT...

At 1257 AM CDT, Doppler radar was tracking a strong thunderstorm over
Ringwood, or over Wonder Lake, moving east at 30 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
McHenry, Round Lake, Wauconda, Fox Lake, Lake Villa, Island Lake,
Wonder Lake, Pistakee Highlands, Long Lake, Johnsburg, Lakemoor,
Spring Grove, Volo, Prairie Grove, Richmond, Bull Valley, McCullom
Lake, Ringwood, Holiday Hills and Greenwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4225 8810 4232 8840 4250 8839 4249 8812
TIME...MOT...LOC 0557Z 279DEG 27KT 4240 8833

RATZER

Special weather statement, Jul 12, 3:14 AM CDT, 1 hour 1 minute before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Local storm report, Jul 12, 3:37 AM CDT, 38 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 11, 9:26 PM CDT	Special Weather Statement	LOT	Kane	19 min
Jul 11, 10:27 PM CDT	Special Weather Statement	LOT	Kane	18 min
Jul 11, 10:32 PM CDT	Special Marine Warning	LOT		88 min
Jul 11, 10:42 PM CDT	Severe Thunderstorm Warning	LOT	Kane	33 min
Jul 11, 10:44 PM CDT	Flash Flood Warning	LOT	Cook, DuPage, Kane, Lake, McHenry	16 hr
Jul 11, 11:37 PM CDT	Special Weather Statement	LOT	Kane	23 min
Jul 12, 12:57 AM CDT	Special Weather Statement	LOT	McHenry	33 min
Jul 12, 1:05 AM CDT	Severe Thunderstorm Warning	LOT	Lake, McHenry	40 min
Jul 12, 1:21 AM CDT	Special Marine Warning	LOT		84 min
Jul 12, 1:29 AM CDT	Flash Flood Warning Emergency	LOT	Lake, McHenry	10 hr
Jul 12, 1:51 AM CDT	Severe Thunderstorm Warning	LOT	Cook, Lake	28 min
Jul 12, 1:53 AM CDT	Special Marine Warning	LOT		67 min
Jul 12, 3:14 AM CDT	Special Weather Statement	LOT	Lake	46 min
Jul 12, 3:21 AM CDT	Special Marine Warning	LOT		84 min
Jul 12, 3:39 AM CDT	River Flood Warning	LOT	Lake	15 days
Jul 12, 3:41 AM CDT	Heat Advisory	LOT	Ford, Grundy, LaSalle, Livingston	12 hr
Jul 12, 4:15 AM CDT	River Flood Warning	LOT	Lake	14 days
Jul 12, 4:38 AM CDT	Special Marine Warning	LOT		97 min
Jul 12, 7:04 AM CDT	Severe Thunderstorm Warning	LOT	Lake, McHenry	71 min
Jul 12, 7:23 AM CDT	Special Marine Warning	LOT		97 min
Jul 12, 7:32 AM CDT	River Flood Warning	LOT	Kane, Kendall	19 days
Jul 12, 8:38 AM CDT	Special Weather Statement	LOT	Cook, DuPage	52 min
Jul 12, 8:59 AM CDT	Special Marine Warning	LOT		2 hr
Jul 12, 9:24 AM CDT	Severe Thunderstorm Warning	LOT	Cook, DuPage, Lake	21 min
Jul 12, 10:14 AM CDT	Flash Flood Warning	LOT	Cook, DuPage, Kane, Kendall, Will	6 hr
Jul 12, 10:29 AM CDT	River Flood Advisory	LOT	Cook	36 hr
Jul 12, 10:57 AM CDT	Flash Flood Warning	LOT	Lake, McHenry	3 hr
Jul 12, 11:44 AM CDT	River Flood Warning	LOT	Cook	5 days
Jul 12, 11:44 AM CDT	River Flood Warning	LOT	Kane, McHenry	21 days
Jul 12, 11:44 AM CDT	River Flood Warning	LOT	Cook	4 days
Jul 12, 11:46 AM CDT	River Flood Warning	LOT	Cook	20 hr
Jul 12, 2:06 PM CDT	Areal Flood Warning	LOT	Cook, Kane, Lake, McHenry	3 hr
Jul 12, 2:32 PM CDT	Flash Flood Watch	LOT	Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 10 more	12 hr
Jul 12, 5:05 PM CDT	River Flood Advisory	LOT	Cook	4 days

Nearby

River Flood Warnings in Illinois, 2017 Every 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.