Alert archive / Illinois / Beach Hazards Statements in 2025
Beach Hazards Statement 15, NWS Chicago, IL
NWS Chicago, IL issued this beach hazards statement at Sep 23, 2025, 4:56 PM CDT for Cook County, Lake County, Illinois; Lake County, Porter County, Indiana. It took effect at Sep 23, 2025, 9:06 PM CDT. It was in force for 40 hr.
The area
The counties it named.
The facts
- Issued
- Sep 23, 2025, 4:56 PM CDT (21:56 UTC)
- In effect from
- Sep 23, 2025, 9:06 PM CDT
- Expired
- Sep 25, 2025, 1:00 PM CDT
- In force
- 40 hr
- Issued by
- NWS Chicago, IL
Counties Cook County, IL, Lake County, IL, Lake County, IN, Porter County, IN
The radar
The Chicago radar (KLOT), 54 km from the middle of the area, began a volume at 21:56 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 nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 9.9 hours before the alert went out and 206 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 405 J/kg
- Mixed-layer CIN
- -95 J/kg
- Mixed-layer LCL
- 1173 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 127 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 23, 3:13 PM CDT | Small Craft Advisory | LOT | 40 hr | |
| Sep 23, 5:21 AM CDT | Dense Fog Advisory | LOT | Benton | 4 hr |
| Sep 23, 12:29 PM CDT | Special Weather Statement | LOT | Benton | 31 min |
Nearby
Beach Hazards Statements in Illinois, 2025Beach Hazards Statements in Indiana, 2025Every beach hazards statement in 2025
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.