Beach Hazards Statement 19, NWS Chicago, IL

309 
WHUS43 KLOT 161422
CFWLOT

LAKESHORE HAZARD MESSAGE
National Weather Service Chicago IL
922 AM CDT Wed Sep 16 2020

INZ001-002-162230-
/O.CON.KLOT.BH.S.0019.200917T0200Z-200919T0300Z/
Lake IN-Porter-
922 AM CDT Wed Sep 16 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 9 PM CDT THIS
EVENING THROUGH FRIDAY EVENING...

* LOCATION...Northwest Indiana beaches.

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED.

* FORECAST WAVE HEIGHTS...5 to 8 feet tonight and Thursday, 3 to 
  6 feet Thursday night and Friday. 

* STRONG RIP CURRENTS AND STRUCTURAL CURRENTS EXPECTED.

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. Please check with your local authorities on
potential beach closures.

&&

$$

ILZ006-103-104-162230-
/O.CON.KLOT.BH.S.0019.200917T0200Z-200919T0900Z/
Lake IL-Northern Cook-Central Cook-
922 AM CDT Wed Sep 16 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 9 PM CDT THIS
EVENING THROUGH LATE FRIDAY NIGHT...

* LOCATION...Northeast Illinois beaches.

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED.

* FORECAST WAVE HEIGHTS...5 to 8 feet tonight and Thursday, 3 to 
  6 feet Thursday night and Friday. 

* STRONG RIP CURRENTS AND STRUCTURAL CURRENTS EXPECTED.

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. Please check with your local authorities on
potential beach closures.

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

&&

$$

KJB

544 
WHUS43 KLOT 162015
CFWLOT

Lakeshore Hazard Message
National Weather Service Chicago IL
315 PM CDT Wed Sep 16 2020

INZ001-170415-
/O.NEW.KLOT.LS.Y.0018.200917T0800Z-200918T1200Z/
/O.CON.KLOT.BH.S.0019.200917T0200Z-200919T0300Z/
Lake IN-
315 PM CDT Wed Sep 16 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 9 PM CDT THIS
EVENING THROUGH FRIDAY EVENING...
...LAKESHORE FLOOD ADVISORY IN EFFECT FROM 3 AM THURSDAY TO 7 AM
CDT FRIDAY...

The National Weather Service in Chicago has issued a Lakeshore
Flood Advisory...which is in effect from 3 AM Thursday to 7 AM
CDT Friday. 

* LOCATION...Lake County Indiana shore.

* HIGH WAVE ACTION...LAKE SHORE FLOODING AND LIFE-THREATENING 
  SWIMMING CONDITIONS EXPECTED. 

* FORECAST MAXIMUM WAVE HEIGHTS...6 to 9 feet. 

* TIMING...Late tonight through early Friday for lakeshore flooding.
  Tonight through Friday evening for dangerous swimming conditions.         

* IMPACTS...The large waves combined with record high lake levels
  could exacerbate already significant beach and shoreline erosion
  sustained over the past several months. Typical flood prone
  locations will likely experience flooding. Onlookers may be
  swept into the lake by the large waves. The dangerous conditions
  will be life-threatening for anyone caught in the lake.

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.

A Lakeshore Flood Advisory indicates that onshore winds will
generate flooding of low areas along the lakeshore.

&&

$$

ILZ006-103-104-170415-
/O.NEW.KLOT.LS.Y.0018.200917T0800Z-200918T1200Z/
/O.CON.KLOT.BH.S.0019.200917T0200Z-200919T0900Z/
Lake IL-Northern Cook-Central Cook-
315 PM CDT Wed Sep 16 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 9 PM CDT THIS
EVENING THROUGH LATE FRIDAY NIGHT...
...LAKESHORE FLOOD ADVISORY IN EFFECT FROM 3 AM THURSDAY TO 7 AM
CDT FRIDAY...

The National Weather Service in Chicago has issued a Lakeshore
Flood Advisory...which is in effect from 3 AM Thursday to 7 AM
CDT Friday. 

* LOCATION...Northeast Illinois shore.

* HIGH WAVE ACTION...LAKE SHORE FLOODING AND LIFE-THREATENING 
  SWIMMING CONDITIONS EXPECTED. 

* FORECAST MAXIMUM WAVE HEIGHTS...6 to 9 feet. 

* TIMING...Late tonight through early Friday for lakeshore flooding. 
  Tonight through late Friday night for dangerous swimming conditions. 

* IMPACTS...The large waves combined with record high lake levels
  could exacerbate already significant beach and shoreline erosion
  sustained over the past several months. Typical flood prone
  locations will likely experience flooding, including the Chicago
  lakefront bike path. Onlookers may be swept into the lake by the
  large waves. The dangerous conditions will be life-threatening 
  for anyone caught in the lake.

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.

A Lakeshore Flood Advisory indicates that onshore winds will
generate flooding of low areas along the lakeshore.

&&

$$

INZ002-170415-
/O.CON.KLOT.BH.S.0019.200917T0200Z-200919T0300Z/
Porter-
315 PM CDT Wed Sep 16 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 9 PM CDT THIS
EVENING THROUGH FRIDAY EVENING...

* LOCATION...Porter County Indiana beaches.

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED.

* FORECAST MAXIMUM WAVE HEIGHTS...5 to 8 feet. 

* STRONG RIP CURRENTS AND STRUCTURAL CURRENTS EXPECTED.

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. The large waves can sweep onlookers into
the lake.

&&

$$

Castro

889 
WHUS43 KLOT 170225
CFWLOT

Lakeshore Hazard Message
National Weather Service Chicago IL
925 PM CDT Wed Sep 16 2020

INZ001-171030-
/O.CON.KLOT.LS.Y.0018.200917T0800Z-200918T1200Z/
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0300Z/
Lake IN-
925 PM CDT Wed Sep 16 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH FRIDAY
EVENING...
...LAKESHORE FLOOD ADVISORY REMAINS IN EFFECT FROM 3 AM THURSDAY
TO 7 AM CDT FRIDAY...

* LOCATION...Lake County Indiana shore.

* HIGH WAVE ACTION...LAKE SHORE FLOODING AND LIFE-THREATENING 
  SWIMMING CONDITIONS EXPECTED. 

* FORECAST MAXIMUM WAVE HEIGHTS...6 to 9 feet.

* TIMING...Late tonight through early Friday for lakeshore 
  flooding. Tonight through Friday evening for dangerous 
  swimming conditions. 

* IMPACTS...The large waves combined with record high lake 
  levels could exacerbate already significant beach and 
  shoreline erosion sustained over the past several months. 
  Typical flood prone locations will likely experience flooding. 
  Onlookers may be swept into the lake by the large waves. The 
  dangerous conditions will be life-threatening for anyone 
  caught in the lake. 

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.

A Lakeshore Flood Advisory indicates that onshore winds will
generate flooding of low areas along the lakeshore.

&&

$$

ILZ006-103-104-171030-
/O.CON.KLOT.LS.Y.0018.200917T0800Z-200918T1200Z/
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0900Z/
Lake IL-Northern Cook-Central Cook-
925 PM CDT Wed Sep 16 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE FRIDAY
NIGHT...
...LAKESHORE FLOOD ADVISORY REMAINS IN EFFECT FROM 3 AM THURSDAY
TO 7 AM CDT FRIDAY...

* LOCATION...Northeast Illinois shore.

* HIGH WAVE ACTION...LAKE SHORE FLOODING AND LIFE-THREATENING 
  SWIMMING CONDITIONS EXPECTED. 

* FORECAST MAXIMUM WAVE HEIGHTS...6 to 9 feet.

* TIMING...Late tonight through early Friday for lakeshore 
  flooding. Tonight through late Friday night for dangerous 
  swimming conditions. 

* IMPACTS...The large waves combined with record high lake 
  levels could exacerbate already significant beach and 
  shoreline erosion sustained over the past several months. 
  Typical flood prone locations will likely experience flooding, 
  including the Chicago lakefront bike path. Onlookers may be 
  swept into the lake by the large waves. The dangerous 
  conditions will be life- threatening for anyone caught in the 
  lake. 

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.

A Lakeshore Flood Advisory indicates that onshore winds will
generate flooding of low areas along the lakeshore.

&&

$$

INZ002-171030-
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0300Z/
Porter-
925 PM CDT Wed Sep 16 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH FRIDAY
EVENING...

* LOCATION...Porter County Indiana beaches.

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED.

* FORECAST MAXIMUM WAVE HEIGHTS...5 to 8 feet.

* STRONG RIP CURRENTS AND STRUCTURAL CURRENTS EXPECTED.

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. The large waves can sweep onlookers into
the lake.

&&

$$

137 
WHUS43 KLOT 170757
CFWLOT

Lakeshore Hazard Message
National Weather Service Chicago IL
257 AM CDT Thu Sep 17 2020

INZ001-171600-
/O.EXT.KLOT.LS.Y.0018.200918T0000Z-200918T1200Z/
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0300Z/
Lake IN-
257 AM CDT Thu Sep 17 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH FRIDAY
EVENING...
...LAKESHORE FLOOD ADVISORY NOW IN EFFECT FROM 7 PM THIS EVENING
TO 7 AM CDT FRIDAY...

* LOCATION...Lake County Indiana shore.

* HIGH WAVE ACTION...LAKE SHORE FLOODING AND LIFE-THREATENING 
  SWIMMING CONDITIONS EXPECTED. 

* FORECAST MAXIMUM WAVE HEIGHTS...4 to 7 feet.

* TIMING...Late tonight through early Friday for lakeshore 
  flooding. Tonight through Friday evening for dangerous 
  swimming conditions. 

* IMPACTS...The large waves crashing into the shoreline may lead 
  to ponding of water along lakeshore parks and trails. Onlookers 
  may be swept into the lake by the large waves. The dangerous 
  conditions will be life- threatening for anyone caught in the 
  lake. 

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.

A Lakeshore Flood Advisory indicates that onshore winds will
generate flooding of low areas along the lakeshore.

&&

$$

ILZ006-103-104-171600-
/O.EXT.KLOT.LS.Y.0018.200918T0000Z-200918T1200Z/
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0900Z/
Lake IL-Northern Cook-Central Cook-
257 AM CDT Thu Sep 17 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE FRIDAY
NIGHT...
...LAKESHORE FLOOD ADVISORY NOW IN EFFECT FROM 7 PM THIS EVENING
TO 7 AM CDT FRIDAY...

* LOCATION...Northeast Illinois shore.

* HIGH WAVE ACTION...LAKE SHORE FLOODING AND LIFE-THREATENING 
  SWIMMING CONDITIONS EXPECTED. 

* FORECAST MAXIMUM WAVE HEIGHTS...4 to 7 feet.

* TIMING...Late tonight through early Friday for lakeshore 
  flooding. Tonight through late Friday night for dangerous 
  swimming conditions. 

* IMPACTS...The large waves crashing into the shoreline may lead 
  to ponding of water along lakeshore parks and trails. Onlookers 
  may be swept into the lake by the large waves. The dangerous 
  conditions will be life- threatening for anyone caught in the 
  lake.

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.

A Lakeshore Flood Advisory indicates that onshore winds will
generate flooding of low areas along the lakeshore.

&&

$$

INZ002-171600-
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0300Z/
Porter-
257 AM CDT Thu Sep 17 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH FRIDAY
EVENING...

* LOCATION...Porter County Indiana beaches.

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED.

* FORECAST MAXIMUM WAVE HEIGHTS...4 to 7 feet.

* STRONG RIP CURRENTS AND STRUCTURAL CURRENTS EXPECTED.

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. The large waves can sweep onlookers into
the lake.

&&

$$

Borchardt

430 
WHUS43 KLOT 171059
CFWLOT

Lakeshore Hazard Message
National Weather Service Chicago IL
559 AM CDT Thu Sep 17 2020

INZ001-171900-
/O.CON.KLOT.LS.Y.0018.200918T0000Z-200918T1200Z/
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0300Z/
Lake IN-
559 AM CDT Thu Sep 17 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH FRIDAY
EVENING...
...LAKESHORE FLOOD ADVISORY REMAINS IN EFFECT FROM 7 PM THIS
EVENING TO 7 AM CDT FRIDAY...

* LOCATION...Lake County Indiana shore.

* HIGH WAVE ACTION...LAKE SHORE FLOODING AND LIFE-THREATENING 
  SWIMMING CONDITIONS EXPECTED. 

* FORECAST MAXIMUM WAVE HEIGHTS...5 to 8 feet.

* TIMING...Late tonight through early Friday for lakeshore 
  flooding. Tonight through Friday evening for dangerous 
  swimming conditions. 

* IMPACTS...The large waves crashing into the shoreline may lead 
  to ponding of water along lakeshore parks and trails. 
  Onlookers may be swept into the lake by the large waves. The 
  dangerous conditions will be life- threatening for anyone 
  caught in the lake. 

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.

A Lakeshore Flood Advisory indicates that onshore winds will
generate flooding of low areas along the lakeshore.

&&

$$

ILZ006-103-104-171900-
/O.CON.KLOT.LS.Y.0018.200918T0000Z-200918T1200Z/
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0900Z/
Lake IL-Northern Cook-Central Cook-
559 AM CDT Thu Sep 17 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE FRIDAY
NIGHT...
...LAKESHORE FLOOD ADVISORY REMAINS IN EFFECT FROM 7 PM THIS
EVENING TO 7 AM CDT FRIDAY...

* LOCATION...Northeast Illinois shore.

* HIGH WAVE ACTION...LAKE SHORE FLOODING AND LIFE-THREATENING 
  SWIMMING CONDITIONS EXPECTED. 

* FORECAST MAXIMUM WAVE HEIGHTS...5 to 8 feet.

* TIMING...Late tonight through early Friday for lakeshore 
  flooding. Tonight through late Friday night for dangerous 
  swimming conditions. 

* IMPACTS...The large waves crashing into the shoreline may lead 
  to ponding of water along lakeshore parks and trails. 
  Onlookers may be swept into the lake by the large waves. The 
  dangerous conditions will be life- threatening for anyone 
  caught in the lake. 

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.

A Lakeshore Flood Advisory indicates that onshore winds will
generate flooding of low areas along the lakeshore.

&&

$$

INZ002-171900-
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0300Z/
Porter-
559 AM CDT Thu Sep 17 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH FRIDAY
EVENING...

* LOCATION...Porter County Indiana beaches.

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED.

* FORECAST MAXIMUM WAVE HEIGHTS...5 to 8 feet.

* STRONG RIP CURRENTS AND STRUCTURAL CURRENTS EXPECTED.

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. The large waves can sweep onlookers into
the lake.

&&

$$

Borchardt

863 
WHUS43 KLOT 171440
CFWLOT

Lakeshore Hazard Message
National Weather Service Chicago IL
940 AM CDT Thu Sep 17 2020

INZ001-172245-
/O.CON.KLOT.LS.Y.0018.200918T0000Z-200918T1200Z/
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0300Z/
Lake IN-
940 AM CDT Thu Sep 17 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH FRIDAY
EVENING...
...LAKESHORE FLOOD ADVISORY REMAINS IN EFFECT FROM 7 PM THIS
EVENING TO 7 AM CDT FRIDAY...

* LOCATION...Lake County Indiana shore.

* HIGH WAVE ACTION...LAKE SHORE FLOODING AND LIFE-THREATENING 
  SWIMMING CONDITIONS EXPECTED. 

* FORECAST MAXIMUM WAVE HEIGHTS...5 to 8 feet.

* TIMING...Late tonight through early Friday for lakeshore 
  flooding. Tonight through Friday evening for dangerous 
  swimming conditions. 

* IMPACTS...The large waves crashing into the shoreline may lead 
  to ponding of water along lakeshore parks and trails. 
  Onlookers may be swept into the lake by the large waves. The 
  dangerous conditions will be life- threatening for anyone 
  caught in the lake. 

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.

A Lakeshore Flood Advisory indicates that onshore winds will
generate flooding of low areas along the lakeshore.

&&

$$

ILZ006-103-104-172245-
/O.CON.KLOT.LS.Y.0018.200918T0000Z-200918T1200Z/
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0900Z/
Lake IL-Northern Cook-Central Cook-
940 AM CDT Thu Sep 17 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE FRIDAY
NIGHT...
...LAKESHORE FLOOD ADVISORY REMAINS IN EFFECT FROM 7 PM THIS
EVENING TO 7 AM CDT FRIDAY...

* LOCATION...Northeast Illinois shore.

* HIGH WAVE ACTION...LAKE SHORE FLOODING AND LIFE-THREATENING 
  SWIMMING CONDITIONS EXPECTED. 

* FORECAST MAXIMUM WAVE HEIGHTS...5 to 8 feet.

* TIMING...Late tonight through early Friday for lakeshore 
  flooding. Tonight through late Friday night for dangerous 
  swimming conditions. 

* IMPACTS...The large waves crashing into the shoreline may lead 
  to ponding of water along lakeshore parks and trails. 
  Onlookers may be swept into the lake by the large waves. The 
  dangerous conditions will be life- threatening for anyone 
  caught in the lake. 

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.

A Lakeshore Flood Advisory indicates that onshore winds will
generate flooding of low areas along the lakeshore.

&&

$$

INZ002-172245-
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0300Z/
Porter-
940 AM CDT Thu Sep 17 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH FRIDAY
EVENING...

* LOCATION...Porter County Indiana beaches.

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED.

* FORECAST MAXIMUM WAVE HEIGHTS...5 to 8 feet.

* STRONG RIP CURRENTS AND STRUCTURAL CURRENTS EXPECTED.

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. The large waves can sweep onlookers into
the lake.

&&

$$

KJB

372 
WHUS43 KLOT 172037
CFWLOT

Lakeshore Hazard Message
National Weather Service Chicago IL
337 PM CDT Thu Sep 17 2020

INZ001-180445-
/O.CON.KLOT.LS.Y.0018.200918T0000Z-200918T1200Z/
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0300Z/
Lake IN-
337 PM CDT Thu Sep 17 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH FRIDAY
EVENING...
...LAKESHORE FLOOD ADVISORY REMAINS IN EFFECT FROM 7 PM THIS
EVENING TO 7 AM CDT FRIDAY...

* LOCATION...Lake County Indiana shore.

* HIGH WAVE ACTION...LAKE SHORE FLOODING AND LIFE-THREATENING 
  SWIMMING CONDITIONS EXPECTED. 

* FORECAST MAXIMUM WAVE HEIGHTS...5 to 8 feet.

* TIMING...Through early Friday for lakeshore flooding. Through 
  Friday evening for dangerous swimming conditions. 

* IMPACTS...The large waves crashing into the shoreline may lead 
  to ponding of water along lakeshore parks and trails. 
  Onlookers may be swept into the lake by the large waves. The 
  dangerous conditions will be life- threatening for anyone 
  caught in the lake. 

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.

A Lakeshore Flood Advisory indicates that onshore winds will
generate flooding of low areas along the lakeshore.

&&

$$

ILZ006-103-104-180445-
/O.CON.KLOT.LS.Y.0018.200918T0000Z-200918T1200Z/
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0900Z/
Lake IL-Northern Cook-Central Cook-
337 PM CDT Thu Sep 17 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE FRIDAY
NIGHT...
...LAKESHORE FLOOD ADVISORY REMAINS IN EFFECT FROM 7 PM THIS
EVENING TO 7 AM CDT FRIDAY...

* LOCATION...Northeast Illinois shore.

* HIGH WAVE ACTION...LAKE SHORE FLOODING AND LIFE-THREATENING 
  SWIMMING CONDITIONS EXPECTED. 

* FORECAST MAXIMUM WAVE HEIGHTS...5 to 8 feet.

* TIMING...Through early Friday for lakeshore flooding. Through 
  late Friday night for dangerous swimming conditions. 

* IMPACTS...The large waves crashing into the shoreline may lead 
  to ponding of water along lakeshore parks and trails. 
  Onlookers may be swept into the lake by the large waves. The 
  dangerous conditions will be life- threatening for anyone 
  caught in the lake. 

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.

A Lakeshore Flood Advisory indicates that onshore winds will
generate flooding of low areas along the lakeshore.

&&

$$

INZ002-180445-
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0300Z/
Porter-
337 PM CDT Thu Sep 17 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH FRIDAY
EVENING...

* LOCATION...Porter County Indiana beaches.

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED.

* FORECAST MAXIMUM WAVE HEIGHTS...5 to 8 feet.

* STRONG RIP CURRENTS AND STRUCTURAL CURRENTS EXPECTED.

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. The large waves can sweep onlookers into
the lake.

&&

$$

KMD

963 
WHUS43 KLOT 180230
CFWLOT

Lakeshore Hazard Message
National Weather Service Chicago IL
930 PM CDT Thu Sep 17 2020

INZ001-181030-
/O.CAN.KLOT.LS.Y.0018.000000T0000Z-200918T1200Z/
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0300Z/
Lake IN-
930 PM CDT Thu Sep 17 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH FRIDAY
EVENING...
...LAKESHORE FLOOD ADVISORY IS CANCELLED...

The National Weather Service in Chicago has cancelled the
Lakeshore Flood Advisory. 

* LOCATION...Lake County Indiana shore.

* HIGH WAVE ACTION AND LIFE-THREATENING SWIMMING CONDITIONS 
  EXPECTED. 

* FORECAST MAXIMUM WAVE HEIGHTS...4 to 6 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not venture out onto piers, jetties, breakwalls, or other 
shoreline structures. Onlookers may be swept into the lake by the 
large waves. The dangerous conditions will be life-threatening for
anyone caught in the lake.

&&

$$

ILZ006-103-104-181030-
/O.CAN.KLOT.LS.Y.0018.000000T0000Z-200918T1200Z/
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0900Z/
Lake IL-Northern Cook-Central Cook-
930 PM CDT Thu Sep 17 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE FRIDAY
NIGHT...
...LAKESHORE FLOOD ADVISORY IS CANCELLED...

The National Weather Service in Chicago has cancelled the
Lakeshore Flood Advisory. 

* LOCATION...Northeast Illinois shore.

* HIGH WAVE ACTION AND LIFE-THREATENING SWIMMING CONDITIONS 
  EXPECTED. 

* FORECAST MAXIMUM WAVE HEIGHTS...4 to 7 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not venture out onto piers, jetties, breakwalls, or other 
shoreline structures. Onlookers may be swept into the lake by the 
large waves. The dangerous conditions will be life-threatening for
anyone caught in the lake.

&&

$$

INZ002-181030-
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0300Z/
Porter-
930 PM CDT Thu Sep 17 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH FRIDAY
EVENING...

* LOCATION...Porter County Indiana beaches.

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED.

* FORECAST MAXIMUM WAVE HEIGHTS...4 to 6 feet.

* STRONG RIP CURRENTS AND STRUCTURAL CURRENTS EXPECTED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not venture out onto piers, jetties, breakwalls, or other 
shoreline structures. Onlookers may be swept into the lake by the 
large waves. The dangerous conditions will be life-threatening for
anyone caught in the lake.

&&

$$

RC

943 
WHUS43 KLOT 180810
CFWLOT

LAKESHORE HAZARD MESSAGE
National Weather Service Chicago IL
310 AM CDT Fri Sep 18 2020

INZ001-002-181700-
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0300Z/
Lake IN-Porter-
310 AM CDT Fri Sep 18 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THIS
EVENING...

* LOCATION...Northwest Indiana shore.

* HIGH WAVE ACTION AND LIFE-THREATENING SWIMMING CONDITIONS 
  EXPECTED. 

* FORECAST MAXIMUM WAVE HEIGHTS...4 to 6 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not venture out onto piers, jetties, breakwalls, or other
shoreline structures. Onlookers may be swept into the lake by the
large waves. The dangerous conditions will be life-threatening
for anyone caught in the lake.

&&

$$

ILZ006-103-104-181700-
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0900Z/
Lake IL-Northern Cook-Central Cook-
310 AM CDT Fri Sep 18 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE
TONIGHT...

* LOCATION...Northeast Illinois shore.

* HIGH WAVE ACTION AND LIFE-THREATENING SWIMMING CONDITIONS 
  EXPECTED. 

* FORECAST MAXIMUM WAVE HEIGHTS...4 to 7 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not venture out onto piers, jetties, breakwalls, or other
shoreline structures. Onlookers may be swept into the lake by the
large waves. The dangerous conditions will be life-threatening
for anyone caught in the lake.

&&

$$

Kluber

955 
WHUS43 KLOT 181521
CFWLOT

Coastal Hazard Message
National Weather Service Chicago IL
1021 AM CDT Fri Sep 18 2020

INZ001-002-190300-
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0300Z/
Lake IN-Porter-
1021 AM CDT Fri Sep 18 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 10 PM CDT THIS
EVENING...

* LOCATION...Northwest Indiana shore.

* HIGH WAVE ACTION AND LIFE-THREATENING SWIMMING CONDITIONS 
  EXPECTED. 

* FORECAST MAXIMUM WAVE HEIGHTS...4 to 6 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not venture out onto piers, jetties, breakwalls, or other
shoreline structures. Onlookers may be swept into the lake by the
large waves. The dangerous conditions will be life-threatening
for anyone caught in the lake.

&&

$$

ILZ006-103-104-190300-
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0900Z/
Lake IL-Northern Cook-Central Cook-
1021 AM CDT Fri Sep 18 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE
TONIGHT...

* LOCATION...Northeast Illinois shore.

* HIGH WAVE ACTION AND LIFE-THREATENING SWIMMING CONDITIONS 
  EXPECTED. 

* FORECAST MAXIMUM WAVE HEIGHTS...4 to 7 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not venture out onto piers, jetties, breakwalls, or other
shoreline structures. Onlookers may be swept into the lake by the
large waves. The dangerous conditions will be life-threatening
for anyone caught in the lake.

&&

$$

Petr

912 
WHUS43 KLOT 182000
CFWLOT

LAKESHORE HAZARD MESSAGE
National Weather Service Chicago IL
300 PM CDT Fri Sep 18 2020

INZ001-002-190400-
/O.EXT.KLOT.BH.S.0019.000000T0000Z-200919T0900Z/
Lake IN-Porter-
300 PM CDT Fri Sep 18 2020

...BEACH HAZARDS STATEMENT NOW IN EFFECT THROUGH LATE TONIGHT...

* LOCATION...Northwest Indiana shore.

* HIGH WAVE ACTION AND LIFE-THREATENING SWIMMING CONDITIONS 
  EXPECTED. 

* FORECAST MAXIMUM WAVE HEIGHTS...4 to 6 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not venture out onto piers, jetties, breakwalls, or other
shoreline structures. Onlookers may be swept into the lake by the
large waves. The dangerous conditions will be life-threatening
for anyone caught in the lake.

&&

$$

ILZ006-103-104-190400-
/O.CON.KLOT.BH.S.0019.000000T0000Z-200919T0900Z/
Lake IL-Northern Cook-Central Cook-
300 PM CDT Fri Sep 18 2020

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE
TONIGHT...

* LOCATION...Northeast Illinois shore.

* HIGH WAVE ACTION AND LIFE-THREATENING SWIMMING CONDITIONS 
  EXPECTED. 

* FORECAST MAXIMUM WAVE HEIGHTS...4 to 6 feet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not venture out onto piers, jetties, breakwalls, or other
shoreline structures. Onlookers may be swept into the lake by the
large waves. The dangerous conditions will be life-threatening
for anyone caught in the lake.

&&

$$

Petr

525 
WHUS43 KLOT 190139
CFWLOT

LAKESHORE HAZARD MESSAGE
National Weather Service Chicago IL
839 PM CDT Fri Sep 18 2020

ILZ006-103-104-INZ001-002-190245-
/O.CAN.KLOT.BH.S.0019.000000T0000Z-200919T0900Z/
Lake IL-Northern Cook-Central Cook-Lake IN-Porter-
839 PM CDT Fri Sep 18 2020

...BEACH HAZARDS STATEMENT IS CANCELLED...

The National Weather Service in Chicago has cancelled the Beach
Hazards Statement. 

Waves have diminished enough to lessen the risk to anyone caught
in the lake.

$$

RC

Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
244 AM CDT Wed Sep 16 2020

.SHORT TERM...
207 AM CDT

Through Thursday...

Currently, a surface cold front stretches from Lake Superior through
the Twin Cities to Sioux Falls, SD to just north of North Platte,
NE. Ahead of the front, light southwesterly winds are in place in
the presence of a tightening low-level pressure gradient. Water
vapor imagery bolstered by regional RAOBs depict a very dry
atmosphere with few clouds head of the front with mean mid-level
(low-level) RHs in the 10-20 (30-40%) range.

After daybreak, mechanical mixing into the low-level wind field will
promote breezy conditions across much of the area with southwest
wind gust of 15 to 25 mph. Modest moisture advection ahead of the
front should allow for a few scattered clouds to develop by early
afternoon with obscured sunshine due to the upper-level wildfire
smoke. The front will move through northern Illinois from north to
south late this afternoon into the early afternoon hours (~4-5 PM at
Rockford, 6-8 PM across the Chicago metro) accompanied by a wind
shift to the northwest. With meager low-level moisture, weak lapse
rates, only modest low-level confluence along the surface front, and
the most robust synoptic-scale forcing remaining well north of our
area, we still anticipate the frontal passage will be dry. However,
we'd be remiss to ignore the off-chance a few inconsequential
showers to manage to develop along the front and have as such added
isolated showers to the forecast.

A secondary cold front will surge inland off Lake Michigan after
dark with accompanying northeast winds. With a cold-advection
"regime" promoting sinking motion, the advection of a relatively
unstable Lake Michigan airmass in which mixing will prevail, and
plenty of low-level flow behind both fronts, breezy northeast winds
will likely prevail through the overnight hours with gusts in the 15-
25 mph range. Speaking of an unstable lake, 850 mb temperatures
dropping into the +8-10 C range and surface Lake temperatures around
+18 C will enable sufficient low-level instability for lake effect
stratus and perhaps a few sprinkles through daybreak Thursday,
mainly with a few counties of the lakeshore.

One last note - The experimental HRRR suggests mixing behind the
initial cold front may encourage the downward transport of mid- to
upper-level smoke to a few thousand feet off the ground, if not even
lower, maximized from about 9 pm to midnight.  Current modeling from
the Illinois EPA suggests the air quality should not substantially
suffer from any smoke that does manage to sneak downward, though a
more noticeable "hazy" look to the sunset and overnight sky is
possible. With the secondary cold front pushing off Lake Michigan,
the highest concentration of low-level smoke may end up confined
away from the lakeshore and across north-central Illinois, again
mainly from 9 PM to midnight.

Borchardt

&&

.LONG TERM...
244 AM CDT

Thursday through Tuesday...

A mainly quiet extended forecast with the main message being a
shot of dry, cool autumn air. This looks to provide some outlying
areas lows to 38-40 Friday night. Given the gusty northeast winds
on Thursday morning that this cool air is arriving on and the high
lake levels, lakeside areas may come close to or see some minor
flooding -- such as near/on the city of Chicago bike path.

Breezy northeast winds from overnight tonight noted in the Short
Term Discussion will be persisting into Thursday as low-level cold
advection and associated steepened lapse rates continue to advect
in. Gusts look to be 20-25 mph in the morning with a few gusts to
30 mph near the lake front. Wave heights remain forecast to peak
6-8 ft or so Thursday morning and early afternoon, which with
high lake levels is near the threshold of Lakeshore Flood Advisory
based on impacts in past events. Surge forecasts from the Lake
Michigan and Huron Operational Forecast System (LMHOFS) show the
underlying surge with this event to be limited (under one foot).
This results in confidence on the lower side if true Advisory
criteria would be reached, so will allow day shift to assess
further. Confidence is high though that this would not be a
Warning level event (10+ ft frequent waves with a higher
underlying surge) even if conditions outperform. A Beach Hazards
Statement has been issued for the high rip current risk however,
and that is for Thursday and Friday and may persist for northeast
Illinois into Saturday morning.

Thursday will start a stretch of multiple days with highs in the
60s, even some low 60s especially Friday thanks to the coolest 850
(925) mb temperatures of 2C (6C) over the area. Any patchy cold
advection type clouds on Thursday will dissolve by evening and
mainly clear skies are expected from that point forward, with any
warm advection clouds aloft to the southwest of the high likely
remaining over Iowa. This will provide the setup for some cool
nights thanks to low dew points in the upper 30s to mid 40s. All
outlying areas and even most of the suburbs should reach the 40s
Thursday night and Friday night, with even a chance the city gets
into the upper 40s. Some favorable low-lying areas could
definitely dip to sub 40, and have a few spots in the
deterministic forecast grids reaching that low.

Ridging aloft establishes itself for the weekend, so as the warm
advection increases aloft, any precipitation chances are squelched
also thanks to the drier air. A gradual warm-up will ensue with
the next chance of rain not looking to be until one week from
today. That too is a small chance looking at current ensemble
forecasts from the GEFS and ECE.

MTF

&&

.AVIATION...
For the 06Z TAFs...

Southwest winds will become gusty after daybreak in advance of a
southward-moving cold front. With modest low-level moisture
transport into the Great Lakes, a scattered cloud deck at about
4000 feet is expected to develop by late morning. The front will
pass through the terminals during the evening hours (~21Z at RFD,
23Z at MDW/ORD/DPA, and 01Z at GYY) accompanied by a wind shift
to the northwest. A secondary front off Lake Michigan will cause a
shift in wind direction to the northeast, wind wind gusts of 15-25
kt through the overnight hours into Thursday morning.

Experimental ESRL HRRR forecasts suggest smoke levels may descend
via mechanical mixing behind the initial front from roughly
02-04Z. Meanwhile, the secondary front off Lake Michigan may act
to confine the "densest" smoke west of ORD/MDW/GYY. For now, will
leave any indication of smoke out of the TAF package, though a
formal mention of haze with a modest visibility restriction may
need to be introduced to RFD/DPA, again in the 02-04Z window.

Borchardt

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...Beach Hazards Statement...ILZ006-ILZ103-ILZ104...9 PM Wednesday
     to 4 AM Saturday.

IN...Beach Hazards Statement...INZ001-INZ002...9 PM Wednesday to 10
     PM Friday.

LM...Small Craft Advisory...LMZ740-LMZ741-LMZ742...9 PM Wednesday to
     3 PM Friday.

     Small Craft Advisory...LMZ743-LMZ744-LMZ745...9 PM Wednesday to
     10 AM Friday.

&&

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Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
230 PM CDT Tue Sep 15 2020

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-161930-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
230 PM CDT Tue Sep 15 2020 /330 PM EDT Tue Sep 15 2020/

This Hazardous Weather Outlook is for portions of North Central
Illinois...Northeast Illinois and Northwest Indiana.

.DAY ONE...Tonight.

  No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Wednesday Night through Saturday...
  High Swim Risk.
  Limited Lakeshore Flood Risk...Mainly on Thursday.

DISCUSSION:

Gusty onshore winds will bring dangerous swim conditions to
southern Lake Michigan behind a sharp cold front Wednesday
night. Minor lakeshore flooding is possible on Thursday.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

LMZ740>745-161930-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
230 PM CDT Tue Sep 15 2020

This Hazardous Weather Outlook is for portions of the Illinois
nearshore waters of Lake Michigan and the Indiana nearshore
waters of Lake Michigan.

.DAY ONE...Tonight.

  No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Wednesday night through Saturday...
  Hazardous conditions for small craft are likely.

KMD

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