Flood Advisory
NWS Chicago IL ยท US
Details
Flood Advisory In Effect Until 8 AM CDT This Morning
- Event
- Flood Advisory
- Issued
- Onset
- Message expires
- Expected end
- Category
- Meteorological
- Urgency
- Expected
- Severity
- Minor
- Certainty
- Likely
- Response
- Avoid
Description
What
Flooding caused by excessive rainfall is expected.
Where
Boone County in north central Illinois... Winnebago County in north central Illinois... McHenry County in northeastern Illinois...
When
Until 800 AM CDT.
Impacts
Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Roads and streets may be flooded.
Additional details
- At 428 AM CDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Up to 1 inch of rain has fallen. - Additional rainfall amounts of 1 to 2 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Rockford, Crystal Lake, Algonquin, Lake in the Hills, McHenry, Belvidere, Woodstock, Huntley, Loves Park, Machesney Park, Roscoe, Fox Lake, Harvard, Island Lake, South Beloit, Rockton, Marengo, Poplar Grove, Rockford Airport, Cary, Johnsburg, Lakemoor, Spring Grove and Candlewick Lake. - http://www.weather.gov/safety/flood
Instructions
A Flood Advisory means minor flooding along waterways and other poor drainage areas is imminent or may already be occurring. Persons in the advisory area should use caution and avoid flood waters. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Affected areas
- Boone County, IL
- McHenry County, IL
- Winnebago County, IL
Public contact
- Issuer
- NWS Chicago IL
- Website
- http://www.weather.gov
Message record
- Received
- Issue to receipt
- ~17s
- CAP status
- Actual
- CAP message type
- Alert
- Lifecycle
- New
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M2Z2DV077F8DYFDW8YQ6FAFE
- Identifier
- urn:oid:2.49.0.1.840.0.6ef72082cf405d32fc52fa7f501c5b96ed7d324c.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.6281
- WMO heading
- XOUS53
- WMO data type
- CAP alert message XML (XO)
- WMO geography
- United States (US)
- WMO bulletin number
- 53
Event codes
| Name | Value |
|---|---|
| SAME | NWS |
| NationalWeatherService | FAY |
Parameters
| Name | Value |
|---|---|
| AWIPSidentifier | FLSLOT |
| WMOidentifier | WGUS83 KLOT 200930 |
| NWSheadline | FLOOD ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| VTEC | /O.NEW.KLOT.FA.Y.0123.260920T0930Z-260920T1300Z/ |
| eventEndingTime | 2026-09-20T08:00:00-05:00 |
| BLOCKCHANNEL | CMAS |
Locations
Location data
- Boone County, IL
- McHenry County, IL
- Winnebago County, IL
| Name | Value |
|---|---|
| SAME | 017007 |
| SAME | 017111 |
| SAME | 017201 |
| UGC | ILC007 |
| UGC | ILC111 |
| UGC | ILC201 |
- Polygons
- 42.5,-89.37 42.5,-88.99 42.49,-88.8 42.5,-88.63 42.49,-88.3 42.5,-88.2 42.15,-88.2 42.15,-89.17 42.2,-89.17 42.2,-89.4 42.5,-89.4 42.5,-89.37