Alert archive / Illinois / Beach Hazards Statements in 2021
Beach Hazards Statement 13, NWS Chicago, IL
NWS Chicago, IL issued this beach hazards statement at Aug 30, 2021, 7:06 PM CDT for Cook County, Lake County, Illinois; Lake County, Porter County, Indiana. It took effect at Aug 31, 2021, 7:00 PM CDT. It was in force for 39 hr.
The area
The counties it named.
The facts
- Issued
- Aug 30, 2021, 7:06 PM CDT (00:06 UTC)
- In effect from
- Aug 31, 2021, 7:00 PM CDT
- Expired
- Sep 2, 2021, 10:00 AM CDT
- In force
- 39 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 00:05 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 00:00Z, 0.1 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
- 399 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 1101 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- -36 m²/s²
- 0-3 km storm-relative helicity
- 18 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.5
The text
As transmitted.
910 WHUS43 KLOT 310006 CFWLOT Coastal Hazard Message National Weather Service Chicago IL 706 PM CDT Mon Aug 30 2021 ILZ006-103-104-INZ001-310815- /O.NEW.KLOT.BH.S.0013.210901T0000Z-210902T1200Z/ Lake IL-Northern Cook-Central Cook-Lake IN- 706 PM CDT Mon Aug 30 2021 ...BEACH HAZARDS STATEMENT IN EFFECT FROM TUESDAY EVENING THROUGH THURSDAY MORNING... * WHAT...High wave action and dangerous currents expected at Lake Michigan beaches. * WHERE...In Indiana, Lake IN County. In Illinois, Lake IL, Northern Cook and Central Cook Counties. * WHEN...From Tuesday evening through Thursday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. Forecast wave heights range from 3 to 5 feet, which are typically the most deadly! 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. && $$ Borchardt
10 follow-up statements
684 WHUS43 KLOT 310802 CFWLOT Coastal Hazard Message National Weather Service Chicago IL 302 AM CDT Tue Aug 31 2021 ILZ006-103-104-INZ001-311615- /O.CON.KLOT.BH.S.0013.210901T0000Z-210902T1200Z/ Lake IL-Northern Cook-Central Cook-Lake IN- 302 AM CDT Tue Aug 31 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM THIS EVENING THROUGH THURSDAY MORNING... * WHAT...High waves to 6 ft and dangerous currents expected at Lake Michigan beaches. * WHERE...In Indiana, Lake IN County. In Illinois, Lake IL, Northern Cook and Central Cook Counties. * WHEN...From this evening through early Thursday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. Forecast wave heights range from 3 to 6 feet, which are typically the most deadly as they can catch swimmers off guard. For information on swim advisories or bans at Chicago beaches: www. cpdbeaches. com. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures. && $$
389 WHUS43 KLOT 311558 CFWLOT Coastal Hazard Message National Weather Service Chicago IL 1058 AM CDT Tue Aug 31 2021 ILZ006-103-104-INZ001-010000- /O.CON.KLOT.BH.S.0013.210901T0000Z-210902T1200Z/ Lake IL-Northern Cook-Central Cook-Lake IN- 1058 AM CDT Tue Aug 31 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 7 PM CDT THIS EVENING THROUGH THURSDAY MORNING... * WHAT...High waves to 6 ft and dangerous currents expected at Lake Michigan beaches. * WHERE...In Indiana, Lake IN County. In Illinois, Lake IL, Northern Cook and Central Cook Counties. * WHEN...From 7 PM CDT this evening through Thursday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. Forecast wave heights range from 3 to 6 feet, which are typically the most deadly as they can catch swimmers off guard. 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. && $$ Petr
103 WHUS43 KLOT 312012 CFWLOT Coastal Hazard Message National Weather Service Chicago IL 312 PM CDT Tue Aug 31 2021 INZ002-010415- /O.EXA.KLOT.BH.S.0013.210901T0000Z-210902T1200Z/ Porter- 312 PM CDT Tue Aug 31 2021 ...BEACH HAZARDS STATEMENT IN EFFECT FROM 7 PM CDT THIS EVENING THROUGH THURSDAY MORNING... * WHAT...High wave action and dangerous currents expected at Porter county beaches. * WHERE...Porter County. * WHEN...From 7 PM CDT this evening through early Thursday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. Forecast wave heights range from 3 to 6 feet, which are typically the most deadly as they can catch swimmers off guard. * ADDITIONAL DETAILS...Waves may briefly subside Wednesday morning, but are expected to build again by Wednesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures. && $$ ILZ006-103-104-INZ001-010415- /O.CON.KLOT.BH.S.0013.210901T0000Z-210902T1200Z/ Lake IL-Northern Cook-Central Cook-Lake IN- 312 PM CDT Tue Aug 31 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 7 PM CDT THIS EVENING THROUGH THURSDAY MORNING... * WHAT...High waves to 6 ft and dangerous currents expected at Lake Michigan beaches. * WHERE...In Indiana, Lake IN County. In Illinois, Lake IL, Northern Cook and Central Cook Counties. * WHEN...From 7 PM CDT this evening through early Thursday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. Forecast wave heights range from 3 to 6 feet, which are typically the most deadly as they can catch swimmers off guard. 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. && $$ Carlaw
432 WHUS43 KLOT 010130 CFWLOT Coastal Hazard Message National Weather Service Chicago IL 830 PM CDT Tue Aug 31 2021 ILZ006-103-104-INZ001-010930- /O.CON.KLOT.BH.S.0013.000000T0000Z-210902T1200Z/ Lake IL-Northern Cook-Central Cook-Lake IN- 830 PM CDT Tue Aug 31 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THURSDAY MORNING... * WHAT...High waves to 6 ft and dangerous currents expected at Lake Michigan beaches. * WHERE...In Indiana, Lake IN County. In Illinois, Lake IL, Northern Cook and Central Cook Counties. * WHEN...Through early Thursday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. Forecast wave heights range from 3 to 6 feet, which are typically the most deadly as they can catch swimmers off guard. For information on swim advisories or bans at Chicago beaches: www.cpdbeaches.com. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures. && $$ INZ002-010930- /O.CON.KLOT.BH.S.0013.000000T0000Z-210902T1200Z/ Porter- 830 PM CDT Tue Aug 31 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THURSDAY MORNING... * WHAT...High wave action and dangerous currents expected at Porter county beaches. * WHERE...Porter County. * WHEN...Through early Thursday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. Forecast wave heights range from 3 to 6 feet, which are typically the most deadly as they can catch swimmers off guard. * ADDITIONAL DETAILS...Waves may briefly subside Wednesday morning, but are expected to build again by Wednesday afternoon. 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. && $$ Borchardt
752 WHUS43 KLOT 010814 CFWLOT Coastal Hazard Message National Weather Service Chicago IL 314 AM CDT Wed Sep 1 2021 ILZ006-103-104-INZ001-011615- /O.EXT.KLOT.BH.S.0013.000000T0000Z-210902T1500Z/ Lake IL-Northern Cook-Central Cook-Lake IN- 314 AM CDT Wed Sep 1 2021 ...BEACH HAZARDS STATEMENT NOW IN EFFECT THROUGH THURSDAY MORNING... * WHAT...High waves to 6 ft and dangerous currents expected at Lake Michigan beaches. * WHERE...In Illinois, Lake and Cook Counties. In Indiana, Lake County. * WHEN...Through Thursday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. Forecast wave heights range from 3 to 6 feet, which are typically the most deadly as they can catch swimmers off guard. For information on swim advisories or bans at Chicago beaches: www.cpdbeaches.com. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures. && $$ INZ002-011615- /O.EXT.KLOT.BH.S.0013.000000T0000Z-210902T1500Z/ Porter- 314 AM CDT Wed Sep 1 2021 ...BEACH HAZARDS STATEMENT NOW IN EFFECT THROUGH THURSDAY MORNING... * WHAT...High waves to 6 ft and dangerous currents expected at Lake Michigan beaches. * WHERE...Porter County. * WHEN...Through Thursday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. Forecast wave heights range from 3 to 6 feet, which are typically the most deadly as they can catch swimmers off guard. 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. && $$
074 WHUS43 KLOT 011546 CFWLOT Coastal Hazard Message National Weather Service Chicago IL 1046 AM CDT Wed Sep 1 2021 ILZ006-103-104-INZ001-020000- /O.CON.KLOT.BH.S.0013.000000T0000Z-210902T1500Z/ Lake IL-Northern Cook-Central Cook-Lake IN- 1046 AM CDT Wed Sep 1 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THURSDAY MORNING... * WHAT...High waves to 6 ft and dangerous currents expected at Lake Michigan beaches. * WHERE...In Illinois, Lake and Cook Counties. In Indiana, Lake County. * WHEN...Through Thursday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. Forecast wave heights range from 3 to 6 feet, which are typically the most deadly as they can catch swimmers off guard. For information on swim advisories or bans at Chicago beaches: www.cpdbeaches.com. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures. && $$ INZ002-020000- /O.CON.KLOT.BH.S.0013.000000T0000Z-210902T1500Z/ Porter- 1046 AM CDT Wed Sep 1 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THURSDAY MORNING... * WHAT...High waves to 6 ft and dangerous currents expected at Lake Michigan beaches. * WHERE...Porter County. * WHEN...Through Thursday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. Forecast wave heights range from 3 to 6 feet, which are typically the most deadly as they can catch swimmers off guard. 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. && $$ Petr
688 WHUS43 KLOT 011957 CFWLOT Coastal Hazard Message National Weather Service Chicago IL 257 PM CDT Wed Sep 1 2021 ILZ006-103-104-INZ001-020500- /O.CON.KLOT.BH.S.0013.000000T0000Z-210902T1500Z/ Lake IL-Northern Cook-Central Cook-Lake IN- 257 PM CDT Wed Sep 1 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THURSDAY MORNING... * WHAT...High waves to 6 ft and dangerous currents expected at Lake Michigan beaches. * WHERE...In Illinois, Lake and Cook Counties. In Indiana, Lake County. * WHEN...Through Thursday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. Forecast wave heights range from 3 to 6 feet, which are typically the most deadly as they can catch swimmers off guard. For information on swim advisories or bans at Chicago beaches: www.cpdbeaches.com. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures. && $$ INZ002-020500- /O.CON.KLOT.BH.S.0013.000000T0000Z-210902T1500Z/ Porter- 257 PM CDT Wed Sep 1 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THURSDAY MORNING... * WHAT...High waves to 6 ft and dangerous currents expected at Lake Michigan beaches. * WHERE...Porter County. * WHEN...Through Thursday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. Forecast wave heights range from 3 to 6 feet, which are typically the most deadly as they can catch swimmers off guard. 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. && $$ Carlaw
866 WHUS43 KLOT 020257 CFWLOT Coastal Hazard Message National Weather Service Chicago IL 957 PM CDT Wed Sep 1 2021 ILZ006-103-104-INZ001-021100- /O.CON.KLOT.BH.S.0013.000000T0000Z-210902T1500Z/ Lake IL-Northern Cook-Central Cook-Lake IN- 957 PM CDT Wed Sep 1 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THURSDAY MORNING... * WHAT...High waves to 6 ft and dangerous currents expected at Lake Michigan beaches. * WHERE...In Illinois, Lake and Cook Counties. In Indiana, Lake County. * WHEN...Through Thursday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. Forecast wave heights range from 3 to 6 feet, which are typically the most deadly as they can catch swimmers off guard. For information on swim advisories or bans at Chicago beaches: www.cpdbeaches.com. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures. && $$ INZ002-021100- /O.CON.KLOT.BH.S.0013.000000T0000Z-210902T1500Z/ Porter- 957 PM CDT Wed Sep 1 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THURSDAY MORNING... * WHAT...High waves to 6 ft and dangerous currents expected at Porter County beaches. * WHERE...Porter County beaches. * WHEN...Through Thursday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. Forecast wave heights range from 3 to 6 feet, which are typically the most deadly as they can catch swimmers off guard. 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. && $$
298 WHUS43 KLOT 020808 CFWLOT Coastal Hazard Message National Weather Service Chicago IL 308 AM CDT Thu Sep 2 2021 ILZ006-103-104-INZ001-021500- /O.CON.KLOT.BH.S.0013.000000T0000Z-210902T1500Z/ Lake IL-Northern Cook-Central Cook-Lake IN- 308 AM CDT Thu Sep 2 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 10 AM CDT THIS MORNING... * WHAT...High waves to 6 ft and dangerous currents expected at Lake Michigan beaches. * WHERE...In Illinois, Lake and Cook Counties. In Indiana, Lake County. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. Forecast wave heights range from 3 to 6 feet, which are typically the most deadly as they can catch swimmers off guard. For information on swim advisories or bans at Chicago beaches: www.cpdbeaches.com. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures. && $$ INZ002-021500- /O.CON.KLOT.BH.S.0013.000000T0000Z-210902T1500Z/ Porter- 308 AM CDT Thu Sep 2 2021 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 10 AM CDT THIS MORNING... * WHAT...High waves to 5 ft and dangerous currents expected at Lake Michigan beaches. * WHERE...Porter County beaches. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. Forecast wave heights range from 3 to 5 feet, which are typically the most deadly as they can catch swimmers off guard. 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. && $$
554 WHUS43 KLOT 021509 CFWLOT Coastal Hazard Message National Weather Service Chicago IL 1009 AM CDT Thu Sep 2 2021 ILZ006-103-104-INZ001-002-021615- /O.EXP.KLOT.BH.S.0013.000000T0000Z-210902T1500Z/ Lake IL-Northern Cook-Central Cook-Lake IN-Porter- 1009 AM CDT Thu Sep 2 2021 ...BEACH HAZARDS STATEMENT HAS EXPIRED... Waves continue to subside ending the threat for strong risk currents. $$
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 8:49 PM CDT | Small Craft Advisory | LOT | 58 hr |
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.