Alert archive / Illinois / Beach Hazards Statements in 2021
Beach Hazards Statement 17, NWS Chicago, IL
NWS Chicago, IL issued this beach hazards statement at Sep 17, 2021, 2:53 PM CDT for Cook County, Lake County, Illinois; Lake County, Porter County, Indiana. It took effect at Sep 18, 2021, 1:00 AM CDT. It was in force for 18 hr.
The area
The counties it named.
The facts
- Issued
- Sep 17, 2021, 2:53 PM CDT (19:53 UTC)
- In effect from
- Sep 18, 2021, 1:00 AM CDT
- Expired
- Sep 18, 2021, 7:00 PM CDT
- In force
- 18 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 19:51 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
Lincoln, IL (KILX), launched 12:00Z, 7.9 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
- 25 J/kg
- Mixed-layer CIN
- -375 J/kg
- Mixed-layer LCL
- 1006 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
860 WHUS43 KLOT 171953 CFWLOT Coastal Hazard Message National Weather Service Chicago IL 253 PM CDT Fri Sep 17 2021 INZ001-002-180400- /O.NEW.KLOT.BH.S.0017.210918T0600Z-210918T2000Z/ Lake IN-Porter- 253 PM CDT Fri Sep 17 2021 ...BEACH HAZARDS STATEMENT IN EFFECT FROM 1 AM CDT SATURDAY THROUGH SATURDAY AFTERNOON... * WHAT...High wave action and dangerous currents expected at Lake Michigan beaches with waves of 3 to 5 feet. * WHERE...Lake IN and Porter County beaches. * WHEN...From 1 AM CDT Saturday through Saturday afternoon. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures. && $$ ILZ006-103-104-180400- /O.NEW.KLOT.BH.S.0017.210918T0600Z-210919T0000Z/ Lake IL-Northern Cook-Central Cook- 253 PM CDT Fri Sep 17 2021 ...BEACH HAZARDS STATEMENT IN EFFECT FROM 1 AM CDT SATURDAY THROUGH SATURDAY AFTERNOON... * WHAT...High wave action and dangerous currents expected at Lake Michigan beaches with waves of 3 to 6 feet. * WHERE...Lake IL and Cook County beaches. * WHEN...From 1 AM CDT Saturday through Saturday afternoon. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. For information on swim advisories or bans at Chicago beaches: www. cpdbeaches. com. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures. && $$
5 follow-up statements
106 WHUS43 KLOT 180235 CFWLOT Coastal Hazard Message National Weather Service Chicago IL 935 PM CDT Fri Sep 17 2021 INZ001-002-181045- /O.CON.KLOT.BH.S.0017.210918T0600Z-210918T2000Z/ Lake IN-Porter- 935 PM CDT Fri Sep 17 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 1 AM CDT SATURDAY THROUGH SATURDAY AFTERNOON... * WHAT...High wave action and dangerous currents expected at Lake Michigan beaches with waves of 3 to 5 feet. * WHERE...Lake IN and Porter County beaches. * WHEN...From 1 AM CDT Saturday through Saturday afternoon. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures. && $$ ILZ006-103-104-181045- /O.CON.KLOT.BH.S.0017.210918T0600Z-210919T0000Z/ Lake IL-Northern Cook-Central Cook- 935 PM CDT Fri Sep 17 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 1 AM CDT SATURDAY THROUGH SATURDAY AFTERNOON... * WHAT...High wave action and dangerous currents expected at Lake Michigan beaches with waves of 3 to 6 feet. * WHERE...Lake IL and Cook County beaches. * WHEN...From 1 AM CDT Saturday through Saturday afternoon. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. For information on swim advisories or bans at Chicago beaches: www. cpdbeaches. com. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures. && $$
114 WHUS43 KLOT 180818 CFWLOT Coastal Hazard Message National Weather Service Chicago IL 318 AM CDT Sat Sep 18 2021 INZ001-002-181630- /O.CON.KLOT.BH.S.0017.000000T0000Z-210918T2000Z/ Lake IN-Porter- 318 AM CDT Sat Sep 18 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 3 PM CDT THIS AFTERNOON... * WHAT...High wave action and dangerous currents expected at Lake Michigan beaches with waves of 3 to 5 ft. * WHERE...Lake IN and Porter Counties. * WHEN...Until 3 PM CDT this afternoon. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures. && $$ ILZ006-103-104-181630- /O.CON.KLOT.BH.S.0017.000000T0000Z-210919T0000Z/ Lake IL-Northern Cook-Central Cook- 318 AM CDT Sat Sep 18 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THIS EVENING... * WHAT...High wave action and dangerous currents expected at Lake Michigan beaches with waves of 4 to 6 ft. * WHERE...Northern Cook, Lake IL and Central Cook Counties. * WHEN...Through this evening. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. For information on swim advisories or bans at Chicago beaches: www. cpdbeaches. com. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures. && $$ - Izzi
168 WHUS43 KLOT 181529 AAA CFWLOT Coastal Hazard Message...UPDATED National Weather Service Chicago IL 1029 AM CDT Sat Sep 18 2021 INZ001-002-182000- /O.CON.KLOT.BH.S.0017.000000T0000Z-210918T2000Z/ Lake IN-Porter- 1029 AM CDT Sat Sep 18 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 3 PM CDT THIS AFTERNOON... * WHAT...High wave action and dangerous currents expected at Lake Michigan beaches with waves of 2 to 5 ft. * WHERE...Lake IN and Porter Counties. * WHEN...Until 3 PM CDT this afternoon. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures. && $$ ILZ006-103-104-182330- /O.CON.KLOT.BH.S.0017.000000T0000Z-210919T0000Z/ Lake IL-Northern Cook-Central Cook- 1029 AM CDT Sat Sep 18 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * WHAT...High wave action and dangerous currents expected at Lake Michigan beaches with waves of 3 to 6 ft. * WHERE...Northern Cook, Lake IL and Central Cook Counties. * WHEN...Through this afternoon. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. For information on swim advisories or bans at Chicago beaches: www. cpdbeaches. com. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures. && $$
776 WHUS43 KLOT 182010 CFWLOT Coastal Hazard Message National Weather Service Chicago IL 310 PM CDT Sat Sep 18 2021 INZ001-002-182115- /O.EXP.KLOT.BH.S.0017.000000T0000Z-210918T2000Z/ Lake IN-Porter- 310 PM CDT Sat Sep 18 2021 ...BEACH HAZARDS STATEMENT HAS EXPIRED... Winds and waves are expected to gradually ease the rest of the afternoon. Waves of 2 to 4 feet will continue at northwest Indiana beaches. $$ ILZ006-103-104-190000- /O.CON.KLOT.BH.S.0017.000000T0000Z-210919T0000Z/ Lake IL-Northern Cook-Central Cook- 310 PM CDT Sat Sep 18 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * WHAT...High wave action and dangerous currents expected at Lake Michigan beaches with waves of 3 to 5 ft. * WHERE...Northern Cook, Lake IL and Central Cook Counties. * WHEN...Through this afternoon. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. For information on swim advisories or bans at Chicago beaches: www. cpdbeaches. com. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures. && $$
536 WHUS43 KLOT 182349 CFWLOT Coastal Hazard Message National Weather Service Chicago IL 649 PM CDT Sat Sep 18 2021 ILZ006-103-104-190100- /O.EXP.KLOT.BH.S.0017.000000T0000Z-210919T0000Z/ Lake IL-Northern Cook-Central Cook- 649 PM CDT Sat Sep 18 2021 ...BEACH HAZARDS STATEMENT WILL EXPIRE AT 7 PM CDT THIS EVENING... Waves continue to diminish with decreasing winds early this evening. However, continue to exercise caution in and around the water as waves in excess of 3 feet remain possible this evening. $$
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 17, 2:50 PM CDT | Small Craft Advisory | LOT | 24 hr | |
| Sep 17, 6:00 PM CDT | Special Weather Statement | LOT | Kane | 45 min |
Nearby
Beach Hazards Statements in Illinois, 2021Beach Hazards Statements in Indiana, 2021Every beach hazards statement in 2021
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.