Alert archive / Illinois / Beach Hazards Statements in 2018

Beach Hazards Statement 21, NWS Chicago, IL

September 24, 2018Lake County, Illinois

NWS Chicago, IL issued this beach hazards statement at Sep 24, 2018, 3:47 AM CDT for Lake County, Illinois. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Sep 24, 2018, 3:47 AM CDT (08:47 UTC)
Expired: Sep 24, 2018, 12:00 PM CDT
In force: 8 hr
Issued by: NWS Chicago, IL

County Lake County, IL

The radar

The Chicago radar (KLOT), 85 km from the middle of the area, began a volume at 08:51 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 nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 8.8 hours before the alert went out and 233 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2123 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: -10 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

957 
WHUS43 KLOT 240847
CFWLOT

LAKESHORE HAZARD MESSAGE
National Weather Service Chicago IL
347 AM CDT Mon Sep 24 2018

ILZ006-014-241700-
/O.NEW.KLOT.BH.S.0021.180924T0847Z-180924T1700Z/
Lake IL-Cook-
347 AM CDT Mon Sep 24 2018

...BEACH HAZARDS STATEMENT IN EFFECT UNTIL NOON CDT TODAY...

The National Weather Service in Chicago has issued a Beach
Hazards Statement...which is in effect until noon CDT today. 

* LOCATION...Northeast Illinois Beaches.

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED.

* FORECAST WAVE HEIGHTS...3 to 5 feet.

* STRONG RIP CURRENTS AND STRUCTURAL CURRENTS EXPECTED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Life threatening waves and currents are expected at the beaches.
People visiting the beaches should stay out of the water.

Rip currents are powerful channels of water flowing quickly away
from shore, which occur most often at low spots or breaks in
sandbars. Rip currents can sweep you into deeper water.

Structural currents form along piers where longshore currents and
wave action flow into the structure. Structural currents can
sweep you into deeper water along the pier structure.

Exposed beaches are more likely to experience the most
significant wave and current impacts. Impacts at beaches with
protective breakwalls or jetties will be subject to the
orientation of structures as well as wind and wave direction.

For information on swim advisories or bans at Chicago beaches
visit: www.cpdbeaches.com.

&&

$$

BMD

1 follow-up statement

313 
WHUS43 KLOT 241709
CFWLOT

LAKESHORE HAZARD MESSAGE
National Weather Service Chicago IL
1209 PM CDT Mon Sep 24 2018

ILZ006-014-241815-
/O.EXP.KLOT.BH.S.0021.000000T0000Z-180924T1700Z/
Lake IL-Cook-
1209 PM CDT Mon Sep 24 2018

...BEACH HAZARDS STATEMENT HAS EXPIRED...

Waves of 2 to 4 feet will keep a moderate swim risk in place this
afternoon. 

$$

KMD

Nearby

Beach Hazards Statements in Illinois, 2018 Every beach hazards statement in 2018

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.