Alert archive / Illinois / River Flood Warnings in 2020

River Flood Warning 29, NWS Chicago, IL

March 28, 2020Lake County, Illinois

NWS Chicago, IL issued this river flood warning at Mar 28, 2020, 8:51 AM CDT for Lake County, Illinois. It took effect at Mar 29, 2020, 1:00 PM CDT. It was in force for 4 days.

The area

The counties it named.

The facts

Issued
Mar 28, 2020, 8:51 AM CDT (13:51 UTC)
In effect from
Mar 29, 2020, 1:00 PM CDT
Expired
Apr 2, 2020, 10:00 PM CDT
In force
4 days
Issued by
NWS Chicago, IL
Area
Storm-based polygon
Flood severity
Minor

County Lake County, IL

The radar

The Chicago radar (KLOT), 85 km from the middle of the area, began a volume at 13:51 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 Russell (RUSI2). The gauge peaked at 7.86 ft at Mar 31, 2020, 5:00 AM CDT.

actionminormoderatemajor4681003/2803/2903/3003/3104/0104/0204/0304/04
Action stage
6.5 ft
Minor stage
7 ft
Moderate stage
9 ft
Major stage
10 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05527800, 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 Mar 28, 6:49 AM CDT, 2 hours 2 minutes earlier.

Area forecast discussion, Mar 28, 6:49 AM CDT, 2 hours 2 minutes before
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Hazardous weather outlook, Mar 28, 4:39 AM CDT, 4 hours 12 minutes before
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
439 AM CDT Sat Mar 28 2020

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-290945-
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-
439 AM CDT Sat Mar 28 2020 /539 AM EDT Sat Mar 28 2020/

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

.DAY ONE...Today and Tonight.

Weather hazards expected...

  Significant Thunderstorm Risk...with an associated:
     Significant Tornado risk.
     Significant hail risk...up to golf ball size.
     Elevated damaging wind risk...up to 60 mph.
  Limited Flooding Risk.
  Elevated Fog Risk this morning.

DISCUSSION...

Scattered thunderstorms this morning may bring locally heavy
rainfall to portions of northern Illinois, with rainfall amounts
in excess of 1.5 inches possible. Isolated hail is also possible.

An outbreak of severe thunderstorms is possible this afternoon
and evening, with the potential for very large hail and tornadoes,
including some threat of significant tornadoes. While the threat
of severe weather will exist across the entire outlook area, it
appears that the greatest threat for tornadoes will be along and
south of the Interstate 88 corridor, including the Dixon,
Rochelle, Dekalb, Peru, Pontiac, Morris and Kankakee. Thunderstorm
movement will be rapidly to the northeast.

In addition to the threat of thunderstorms, areas of fog are
possible this morning across northeast Illinois, especially along
Lake Michigan. Some fog may be locally dense.

Late tonight, strong southwest to west winds will develop, with
gusts to 40 mph possible by morning.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Sunday...
  Limited Non Thunderstorm Wind Risk.

DISCUSSION:

Strong west to southwest winds gusting up to 45 mph are
likely Sunday.

.SPOTTER INFORMATION STATEMENT...

Any reports of severe weather will be greatly appreciated this
afternoon and evening.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the northeast at 50 mph.

LMZ740>745-290945-
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-
439 AM CDT Sat Mar 28 2020

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...Today and Tonight.

Weather hazards expected...

  Gale force winds and or very hazardous waves.
  Significant Thunderstorm Risk...with an associated:
     Significant hail risk...up to half dollar size.
     Elevated thunderstorm wind gust risk...up to 60 mph.
  Elevated Fog Risk.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Sunday...
  Gale force winds and very hazardous waves are likely.

Ratzer

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The office that day

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

IssuedProductOfficeCountiesLasted
Mar 28, 12:52 AM CDTAreal Flood AdvisoryLOTDeKalb, Kane, Lee, Ogle4 hr
Mar 28, 2:29 AM CDTRiver Flood WarningLOTWinnebago4 days
Mar 28, 2:29 AM CDTRiver Flood WarningLOTWinnebago7 days
Mar 28, 2:29 AM CDTRiver Flood WarningLOTWinnebago21 days
Mar 28, 2:29 AM CDTRiver Flood WarningLOTOgle5 days
Mar 28, 2:39 AM CDTRiver Flood AdvisoryLOTBoone8 hr
Mar 28, 2:39 AM CDTRiver Flood AdvisoryLOTWinnebago21 days
Mar 28, 2:39 AM CDTRiver Flood AdvisoryLOTLee6 days
Mar 28, 2:39 AM CDTRiver Flood AdvisoryLOTDeKalb36 hr
Mar 28, 3:36 AM CDTGale WarningLOT42 hr
Mar 28, 4:23 AM CDTRiver Flood WarningLOTKane, McHenry6 days
Mar 28, 4:23 AM CDTRiver Flood WarningLOTKane, Kendall7 days
Mar 28, 8:51 AM CDTRiver Flood WarningLOTLake7 days
Mar 28, 9:10 AM CDTRiver Flood AdvisoryLOTLake64 hr
Mar 28, 9:10 AM CDTRiver Flood AdvisoryLOTCook70 hr
Mar 28, 9:15 AM CDTRiver Flood AdvisoryLOTIroquois16 hr
Mar 28, 9:50 AM CDTRiver Flood AdvisoryLOTLaSalle3 days
Mar 28, 10:49 AM CDTRiver Flood WarningLOTBoone40 hr
Mar 28, 1:15 PM CDTRiver Flood AdvisoryLOTDuPage, Will32 hr
Mar 28, 2:43 PM CDTWind AdvisoryLOTBoone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more29 hr
Mar 28, 2:55 PM CDTSmall Craft AdvisoryLOT13 hr
Mar 28, 6:49 PM CDTSpecial Weather StatementLOTOgle26 min
Mar 28, 9:15 AM CDTRiver Flood AdvisoryLOTNewton5 days

Nearby

River Flood Warnings in Illinois, 2020Every river flood warning in 2020

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.