Warning Vector

Flood Watch

NWS Chicago IL ยท US

Updated
This event was updated at .

Details

Flood Watch Now In Effect Until 1 PM CDT This Afternoon

Event
Flood Watch
Issued
Onset
Message expires
Expected end
Category
Meteorological
Urgency
Future
Severity
Severe
Certainty
Possible
Response
Prepare

Description

What

Flash flooding caused by excessive rainfall continues to be possible.

Where

Portions of Illinois, including the following areas, Boone, Central Cook, De Kalb, DuPage, Eastern Will, Grundy, Kane, Kankakee, Kendall, La Salle, Lake IL, Lee, McHenry, Northern Cook, Northern Will, Ogle, Southern Cook, Southern Will and Winnebago and northwest Indiana, including the following areas, Lake IN and Porter.

When

Until 1 PM CDT this afternoon.

Impacts

Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Underpasses may be flooded. Roads and streets may be flooded. Basement flooding may occur.

Additional details

- Periods of showers and thunderstorms are expected through midday. Swaths of torrential rain with 2 inch per hour rainfall rates, or higher are likely to occur within the watch area and may result in areas of flash flooding and cause rapid rises on area rivers, creeks, and streams. - http://www.weather.gov/safety/flood

Instructions

A Flood Watch for flash flooding means rapid-onset flooding is possible, but not yet certain, based upon the latest forecasts. Flash flooding is a dangerous situation. Persons with interests along area rivers, creeks, and other waterways should monitor the latest forecasts and be prepared to take action should flooding develop.

Affected areas

  • Winnebago County, IL
  • Boone County, IL
  • McHenry County, IL
  • Lake
  • Ogle County, IL
  • Lee County, IL
  • De Kalb
  • Kane County, IL
  • DuPage County, IL
  • La Salle
  • Kendall County, IL
  • Grundy County, IL
  • Kankakee County, IL
  • Northern Cook
  • Central Cook
  • Southern Cook
  • Northern Will
  • Southern Will
  • Eastern Will
  • Lake
  • Porter County, IN

Public contact

Issuer
NWS Chicago IL

Message record

Received
Issue to receipt
~1m15s
CAP status
Actual
CAP message type
Update
Lifecycle
Updated
Source
NWWS-OI
Feed
NWWS
Recovered
No
CAP routing and identity
ULID
01M2YRBGX10RRCQA2Z1N3Z5R4T
Identifier
urn:oid:2.49.0.1.840.0.31742031bd4a052d05f9fee6fbb381278b39fc0f.001.1
Sender
w-nws.webmaster@noaa.gov
Scope
Public
CAP source
211803 v2.3.0
Handling codes
IPAWSv1.0
Issuing office
NWS Chicago IL
AWIPS ID
CAPLOT
NWWS sequence
nwws_processor.1103
WMO heading
XOUS53
WMO data type
CAP alert message XML (XO)
WMO geography
United States (US)
WMO bulletin number
53

References

Sender
w-nws.webmaster@noaa.gov
Sent
Sender
w-nws.webmaster@noaa.gov
Sent
Sender
w-nws.webmaster@noaa.gov
Sent
Sender
w-nws.webmaster@noaa.gov
Sent
Sender
w-nws.webmaster@noaa.gov
Sent
Sender
w-nws.webmaster@noaa.gov
Sent
Sender
w-nws.webmaster@noaa.gov
Sent
Sender
w-nws.webmaster@noaa.gov
Sent
Sender
w-nws.webmaster@noaa.gov
Sent
Sender
w-nws.webmaster@noaa.gov
Sent
Sender
w-nws.webmaster@noaa.gov
Sent

Event codes

NameValue
SAMEFFA
NationalWeatherServiceFAA

Parameters

NameValue
AWIPSidentifierFFALOT
WMOidentifierWGUS63 KLOT 200633
NWSheadlineFLOOD WATCH NOW IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON
BLOCKCHANNELEAS
BLOCKCHANNELNWEM
EAS-ORGWXR
VTEC/O.EXT.KLOT.FA.A.0016.000000T0000Z-260920T1800Z/
eventEndingTime2026-09-20T13:00:00-05:00
BLOCKCHANNELCMAS
expiredReferencesw-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.193b7c292302f4bcfe2b0778e2a4305f8afd6ddf.001.1,2026-09-19T15:57:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.cae5ec79914e610b53719c596cc2a6100ee1c665.002.1,2026-09-19T10:34:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.cae5ec79914e610b53719c596cc2a6100ee1c665.001.1,2026-09-19T10:34:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.fc9a4929fd3a6ab812a4ac4d5f02d2d68cc0f6ac.002.1,2026-09-19T03:39:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.fc9a4929fd3a6ab812a4ac4d5f02d2d68cc0f6ac.001.1,2026-09-19T03:39:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.93311e257cfccf9da891a3445204312069e25e8d.002.1,2026-09-18T21:49:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.93311e257cfccf9da891a3445204312069e25e8d.001.1,2026-09-18T21:49:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.645564b2ad5278c50a8b5452c909e42c2ebbc27c.002.1,2026-09-18T13:47:00-05:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.645564b2ad5278c50a8b5452c909e42c2ebbc27c.001.1,2026-09-18T13:47:00-05:00
Locations

Location data

  • Winnebago County, IL
  • Boone County, IL
  • McHenry County, IL
  • Lake
  • Ogle County, IL
  • Lee County, IL
  • De Kalb
  • Kane County, IL
  • DuPage County, IL
  • La Salle
  • Kendall County, IL
  • Grundy County, IL
  • Kankakee County, IL
  • Northern Cook
  • Central Cook
  • Southern Cook
  • Northern Will
  • Southern Will
  • Eastern Will
  • Lake
  • Porter County, IN
NameValue
SAME017201
SAME017007
SAME017111
SAME017097
SAME017141
SAME017103
SAME017037
SAME017089
SAME017043
SAME017099
SAME017093
SAME017063
SAME017091
SAME017031
SAME017197
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