Alert archive / Illinois / Beach Hazards Statements in 2023

Beach Hazards Statement 19, NWS Chicago, IL

September 6, 2023Cook County, Lake County, Illinois; Lake County, Porter County, Indiana

NWS Chicago, IL issued this beach hazards statement at Sep 6, 2023, 3:27 PM CDT for Cook County, Lake County, Illinois; Lake County, Porter County, Indiana. It took effect at Sep 7, 2023, 1:00 AM CDT. It was in force for 48 hr.

The area

The counties it named.

The facts

Issued: Sep 6, 2023, 3:27 PM CDT (20:27 UTC)
In effect from: Sep 7, 2023, 1:00 AM CDT
Expired: Sep 9, 2023, 1:00 AM CDT
In force: 48 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 20:28 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, 8.5 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 625 J/kg
Mixed-layer CIN: -115 J/kg
Mixed-layer LCL: 744 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 13 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this beach hazards statement 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 beach hazards statement went out at Sep 6, 2:37 PM CDT, 50 minutes earlier.

Area forecast discussion, Sep 6, 2:37 PM CDT, 50 minutes before

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Hazardous weather outlook, Sep 6, 9:42 AM CDT, 5 hours 45 minutes before

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In the hours before

Local storm report, Sep 6, 10:56 AM CDT, 4 hours 31 minutes before

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Local storm report, Sep 6, 10:59 AM CDT, 4 hours 28 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 6, 4:12 AM CDT	Severe Thunderstorm Warning	LOT	DuPage, Kane, Kendall, Will	31 min
Sep 6, 4:34 AM CDT	Special Marine Warning	LOT		116 min
Sep 6, 5:55 AM CDT	Areal Flood Advisory	LOT	Cook, Kankakee, Will	3 hr
Sep 6, 6:17 AM CDT	Flash Flood Warning	LOT	Cook, Will	3 hr
Sep 6, 6:42 AM CDT	Flash Flood Warning	LOT	Kankakee	3 hr
Sep 6, 2:56 PM CDT	Small Craft Advisory	LOT		52 hr

Nearby

Beach Hazards Statements in Illinois, 2023 Beach Hazards Statements in Indiana, 2023 Every beach hazards statement in 2023

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.