Alert archive / Indiana / Beach Hazards Statements in 2013

Beach Hazards Statement 10, NWS Chicago, IL

August 12, 2013Lake County, Illinois; Lake County, Porter County, Indiana

NWS Chicago, IL issued this beach hazards statement at Aug 12, 2013, 3:36 PM CDT for Lake County, Illinois; Lake County, Porter County, Indiana. It took effect at Aug 13, 2013, 3:19 AM CDT. It was in force for 34 hr.

The area

The counties it named.

The facts

Issued
Aug 12, 2013, 3:36 PM CDT (20:36 UTC)
In effect from
Aug 13, 2013, 3:19 AM CDT
Expired
Aug 14, 2013, 1:00 PM CDT
In force
34 hr
Issued by
NWS Chicago, IL

Counties Lake County, IL, Lake County, IN, Porter County, IN

The radar

The Chicago radar (KLOT), 57 km from the middle of the area, began a volume at 20:37 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, 8.6 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-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 2013-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2013-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1813 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
57 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

708 
WHUS43 KLOT 122036
CFWLOT

LAKESHORE HAZARD MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
336 PM CDT MON AUG 12 2013

ILZ006-014-130445-
/O.NEW.KLOT.BH.S.0010.130813T0900Z-130814T0900Z/
LAKE IL-COOK-
336 PM CDT MON AUG 12 2013

...BEACH HAZARDS STATEMENT IN EFFECT FROM LATE TONIGHT THROUGH
LATE TUESDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A BEACH
HAZARDS STATEMENT FOR DANGEROUS SWIMMING CONDITIONS...WHICH IS IN
EFFECT FROM LATE TONIGHT THROUGH LATE TUESDAY NIGHT. 

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED LATE
  TONIGHT THROUGH TUESDAY NIGHT.

* STRONG RIP CURRENTS EXPECTED ALONG THE ILLINOIS LAKE MICHIGAN
  BEACHES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DANGEROUS POUNDING WAVES AND LIFE-THREATENING RIP 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 OUT AWAY FROM SHORE INTO
DEEPER WATER.

STRUCTURAL CURRENTS FORM ALONG PIERS AND BREAKWALLS WHERE
LONGSHORE CURRENTS AND WAVE ACTION FLOW INTO THE STRUCTURE. 
STRUCTURAL CURRENTS CAN SWEEP YOU OUT OUT AWAY FROM SHORE ALONG
THE PIER STRUCTURE.

&&

$$

INZ001-002-130445-
/O.NEW.KLOT.BH.S.0010.130813T0900Z-130814T1200Z/
LAKE IN-PORTER-
336 PM CDT MON AUG 12 2013

...BEACH HAZARDS STATEMENT IN EFFECT FROM LATE TONIGHT THROUGH
WEDNESDAY MORNING...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A BEACH
HAZARDS STATEMENT FOR DANGEROUS SWIMMING CONDITIONS...WHICH IS IN
EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY MORNING. 

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED LATE
  TONIGHT THROUGH EARLY WEDNESDAY MORNING.

* STRONG RIP CURRENTS EXPECTED ALONG THE ILLINOIS LAKE MICHIGAN
  BEACHES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DANGEROUS POUNDING WAVES AND LIFE-THREATENING RIP 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 OUT AWAY FROM SHORE INTO
DEEPER WATER.

STRUCTURAL CURRENTS FORM ALONG PIERS AND BREAKWALLS WHERE
LONGSHORE CURRENTS AND WAVE ACTION FLOW INTO THE STRUCTURE. 
STRUCTURAL CURRENTS CAN SWEEP YOU OUT OUT AWAY FROM SHORE ALONG
THE PIER STRUCTURE.

&&

$$

MTF

PLEASE VISIT THE FOLLOWING WEBSITE TO SHARE YOUR THOUGHTS ON THE
NEW BEACH HAZARDS STATEMENT...

HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=CHMBHS

THEN AFTER DOING THE SURVEY VISIT US AT HTTP://WEATHER.GOV/CHICAGO

FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT:
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.CHICAGO.GOV
WWW.TWITTER.COM/NWSCHICAGO
WWW.YOUTUBE.COM/NWSCHICAGO
8 follow-up statements
997 
WHUS43 KLOT 122042 CCA
CFWLOT

LAKESHORE HAZARD MESSAGE...CORRECTED
NATIONAL WEATHER SERVICE CHICAGO IL
341 PM CDT MON AUG 12 2013

ILZ006-014-130500-
/O.NEW.KLOT.BH.S.0010.130813T0900Z-130814T0900Z/
LAKE IL-COOK-
341 PM CDT MON AUG 12 2013

...BEACH HAZARDS STATEMENT IN EFFECT FROM LATE TONIGHT THROUGH
LATE TUESDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A BEACH
HAZARDS STATEMENT FOR DANGEROUS SWIMMING CONDITIONS...WHICH IS IN
EFFECT FROM LATE TONIGHT THROUGH LATE TUESDAY NIGHT. 

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED LATE
  TONIGHT THROUGH TUESDAY NIGHT.

* STRONG RIP CURRENTS EXPECTED ALONG THE ILLINOIS LAKE MICHIGAN
  BEACHES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DANGEROUS POUNDING WAVES AND LIFE-THREATENING RIP 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 OUT AWAY FROM SHORE INTO
DEEPER WATER.

STRUCTURAL CURRENTS FORM ALONG PIERS AND BREAKWALLS WHERE
LONGSHORE CURRENTS AND WAVE ACTION FLOW INTO THE STRUCTURE. 
STRUCTURAL CURRENTS CAN SWEEP YOU OUT OUT AWAY FROM SHORE ALONG
THE PIER STRUCTURE.

&&

$$

INZ001-002-130500-
/O.COR.KLOT.BH.S.0010.130813T0900Z-130814T1200Z/
LAKE IN-PORTER-
341 PM CDT MON AUG 12 2013

...BEACH HAZARDS STATEMENT IN EFFECT FROM LATE TONIGHT THROUGH
WEDNESDAY MORNING...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A BEACH
HAZARDS STATEMENT FOR DANGEROUS SWIMMING CONDITIONS...WHICH IS IN
EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY MORNING. 

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED LATE
  TONIGHT THROUGH EARLY WEDNESDAY MORNING.

* STRONG RIP CURRENTS EXPECTED ALONG THE INDIANA LAKE MICHIGAN
  BEACHES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DANGEROUS POUNDING WAVES AND LIFE-THREATENING RIP 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 OUT AWAY FROM SHORE INTO
DEEPER WATER.

STRUCTURAL CURRENTS FORM ALONG PIERS AND BREAKWALLS WHERE
LONGSHORE CURRENTS AND WAVE ACTION FLOW INTO THE STRUCTURE. 
STRUCTURAL CURRENTS CAN SWEEP YOU OUT OUT AWAY FROM SHORE ALONG
THE PIER STRUCTURE.

&&

$$

MTF

PLEASE VISIT THE FOLLOWING WEBSITE TO SHARE YOUR THOUGHTS ON THE
NEW BEACH HAZARDS STATEMENT...

HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=CHMBHS

THEN AFTER DOING THE SURVEY VISIT US AT HTTP://WEATHER.GOV/CHICAGO

FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT:
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.CHICAGO.GOV
WWW.TWITTER.COM/NWSCHICAGO
WWW.YOUTUBE.COM/NWSCHICAGO
800 
WHUS43 KLOT 130206
CFWLOT

LAKESHORE HAZARD MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
906 PM CDT MON AUG 12 2013

ILZ006-014-131015-
/O.CON.KLOT.BH.S.0010.130813T0900Z-130814T0900Z/
LAKE IL-COOK-
906 PM CDT MON AUG 12 2013

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 4 AM CDT
TUESDAY THROUGH LATE TUESDAY NIGHT...

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED 
  LATE TONIGHT THROUGH TUESDAY NIGHT. 

* STRONG RIP CURRENTS EXPECTED ALONG THE ILLINOIS LAKE MICHIGAN 
  BEACHES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DANGEROUS POUNDING WAVES AND LIFE-THREATENING RIP 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 OUT AWAY FROM SHORE INTO
DEEPER WATER.

STRUCTURAL CURRENTS FORM ALONG PIERS AND BREAKWALLS WHERE
LONGSHORE CURRENTS AND WAVE ACTION FLOW INTO THE STRUCTURE.
STRUCTURAL CURRENTS CAN SWEEP YOU OUT OUT AWAY FROM SHORE ALONG
THE PIER STRUCTURE.

&&

$$

INZ001-002-131015-
/O.CON.KLOT.BH.S.0010.130813T0900Z-130814T1200Z/
LAKE IN-PORTER-
906 PM CDT MON AUG 12 2013

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 4 AM CDT
TUESDAY THROUGH WEDNESDAY MORNING...

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED 
  LATE TONIGHT THROUGH EARLY WEDNESDAY MORNING. 

* STRONG RIP CURRENTS EXPECTED ALONG THE INDIANA LAKE MICHIGAN 
  BEACHES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DANGEROUS POUNDING WAVES AND LIFE-THREATENING RIP 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 OUT AWAY FROM SHORE INTO
DEEPER WATER.

STRUCTURAL CURRENTS FORM ALONG PIERS AND BREAKWALLS WHERE
LONGSHORE CURRENTS AND WAVE ACTION FLOW INTO THE STRUCTURE.
STRUCTURAL CURRENTS CAN SWEEP YOU OUT OUT AWAY FROM SHORE ALONG
THE PIER STRUCTURE.

&&

$$

BMD

PLEASE VISIT THE FOLLOWING WEBSITE TO SHARE YOUR THOUGHTS ON THE
NEW BEACH HAZARDS STATEMENT...

HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=CHMBHS

THEN AFTER DOING THE SURVEY VISIT US AT HTTP://WEATHER.GOV/CHICAGO

FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT:
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.CHICAGO.GOV
WWW.TWITTER.COM/NWSCHICAGO
WWW.YOUTUBE.COM/NWSCHICAGO
992 
WHUS43 KLOT 130819
CFWLOT

LAKESHORE HAZARD MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
319 AM CDT TUE AUG 13 2013

ILZ006-014-131630-
/O.EXT.KLOT.BH.S.0010.130813T0819Z-130814T0900Z/
LAKE IL-COOK-
319 AM CDT TUE AUG 13 2013

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

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED 
  NOW THROUGH TUESDAY NIGHT. 

* STRONG RIP CURRENTS EXPECTED ALONG THE ILLINOIS LAKE MICHIGAN 
  BEACHES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DANGEROUS POUNDING WAVES AND LIFE-THREATENING RIP 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 OUT AWAY FROM SHORE INTO
DEEPER WATER.

STRUCTURAL CURRENTS FORM ALONG PIERS AND BREAKWALLS WHERE
LONGSHORE CURRENTS AND WAVE ACTION FLOW INTO THE STRUCTURE.
STRUCTURAL CURRENTS CAN SWEEP YOU OUT OUT AWAY FROM SHORE ALONG
THE PIER STRUCTURE.

&&

$$

INZ001-002-131630-
/O.EXT.KLOT.BH.S.0010.130813T0819Z-130814T1200Z/
LAKE IN-PORTER-
319 AM CDT TUE AUG 13 2013

...BEACH HAZARDS STATEMENT NOW IN EFFECT THROUGH WEDNESDAY
MORNING...

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED 
  NOW THROUGH EARLY WEDNESDAY MORNING. 

* STRONG RIP CURRENTS EXPECTED ALONG THE INDIANA LAKE MICHIGAN 
  BEACHES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DANGEROUS POUNDING WAVES AND LIFE-THREATENING RIP 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 OUT AWAY FROM SHORE INTO
DEEPER WATER.

STRUCTURAL CURRENTS FORM ALONG PIERS AND BREAKWALLS WHERE
LONGSHORE CURRENTS AND WAVE ACTION FLOW INTO THE STRUCTURE.
STRUCTURAL CURRENTS CAN SWEEP YOU OUT OUT AWAY FROM SHORE ALONG
THE PIER STRUCTURE.

&&

$$

MDB

PLEASE VISIT THE FOLLOWING WEBSITE TO SHARE YOUR THOUGHTS ON THE
NEW BEACH HAZARDS STATEMENT...

HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=CHMBHS

THEN AFTER DOING THE SURVEY VISIT US AT HTTP://WEATHER.GOV/CHICAGO

FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT:
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.CHICAGO.GOV
WWW.TWITTER.COM/NWSCHICAGO
WWW.YOUTUBE.COM/NWSCHICAGO
336 
WHUS43 KLOT 131428
CFWLOT

LAKESHORE HAZARD MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
928 AM CDT TUE AUG 13 2013

ILZ006-014-132230-
/O.CON.KLOT.BH.S.0010.000000T0000Z-130814T0900Z/
LAKE IL-COOK-
928 AM CDT TUE AUG 13 2013

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

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED
  THROUGH TONIGHT.

* STRONG RIP CURRENTS EXPECTED ALONG THE ILLINOIS LAKE MICHIGAN 
  BEACHES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DANGEROUS POUNDING WAVES AND LIFE-THREATENING RIP 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 OUT AWAY FROM SHORE INTO
DEEPER WATER.

STRUCTURAL CURRENTS FORM ALONG PIERS AND BREAKWALLS WHERE
LONGSHORE CURRENTS AND WAVE ACTION FLOW INTO THE STRUCTURE.
STRUCTURAL CURRENTS CAN SWEEP YOU OUT OUT AWAY FROM SHORE ALONG
THE PIER STRUCTURE.

&&

$$

INZ001-002-132230-
/O.CON.KLOT.BH.S.0010.000000T0000Z-130814T1200Z/
LAKE IN-PORTER-
928 AM CDT TUE AUG 13 2013

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH WEDNESDAY
MORNING...

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED 
  NOW THROUGH EARLY WEDNESDAY MORNING. 

* STRONG RIP CURRENTS EXPECTED ALONG THE INDIANA LAKE MICHIGAN 
  BEACHES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DANGEROUS POUNDING WAVES AND LIFE-THREATENING RIP 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 OUT AWAY FROM SHORE INTO
DEEPER WATER.

STRUCTURAL CURRENTS FORM ALONG PIERS AND BREAKWALLS WHERE
LONGSHORE CURRENTS AND WAVE ACTION FLOW INTO THE STRUCTURE.
STRUCTURAL CURRENTS CAN SWEEP YOU OUT OUT AWAY FROM SHORE ALONG
THE PIER STRUCTURE.

&&

$$

MTF

PLEASE VISIT THE FOLLOWING WEBSITE TO SHARE YOUR THOUGHTS ON THE
NEW BEACH HAZARDS STATEMENT...

HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=CHMBHS

THEN AFTER DOING THE SURVEY VISIT US AT HTTP://WEATHER.GOV/CHICAGO

FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT:
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.CHICAGO.GOV
WWW.TWITTER.COM/NWSCHICAGO
WWW.YOUTUBE.COM/NWSCHICAGO
882 
WHUS43 KLOT 132046
CFWLOT

LAKESHORE HAZARD MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
346 PM CDT TUE AUG 13 2013

ILZ014-INZ001-002-140500-
/O.EXT.KLOT.BH.S.0010.000000T0000Z-130814T1500Z/
COOK-LAKE IN-PORTER-
346 PM CDT TUE AUG 13 2013

...BEACH HAZARDS STATEMENT NOW IN EFFECT THROUGH WEDNESDAY
MORNING...

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED
  THROUGH WEDNESDAY MORNING.

* STRONG RIP CURRENTS EXPECTED ALONG THE ILLINOIS AND INDIANA LAKE
  MICHIGAN BEACHES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DANGEROUS POUNDING WAVES AND LIFE-THREATENING RIP 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 OUT AWAY FROM SHORE INTO
DEEPER WATER.

STRUCTURAL CURRENTS FORM ALONG PIERS AND BREAKWALLS WHERE
LONGSHORE CURRENTS AND WAVE ACTION FLOW INTO THE STRUCTURE.
STRUCTURAL CURRENTS CAN SWEEP YOU OUT OUT AWAY FROM SHORE ALONG
THE PIER STRUCTURE.

&&

$$

ILZ006-140500-
/O.CON.KLOT.BH.S.0010.000000T0000Z-130814T0900Z/
LAKE IL-
346 PM CDT TUE AUG 13 2013

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

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED 
  THROUGH TONIGHT. 

* STRONG RIP CURRENTS EXPECTED ALONG THE ILLINOIS LAKE MICHIGAN 
  BEACHES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DANGEROUS POUNDING WAVES AND LIFE-THREATENING RIP 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 OUT AWAY FROM SHORE INTO
DEEPER WATER.

STRUCTURAL CURRENTS FORM ALONG PIERS AND BREAKWALLS WHERE
LONGSHORE CURRENTS AND WAVE ACTION FLOW INTO THE STRUCTURE.
STRUCTURAL CURRENTS CAN SWEEP YOU OUT OUT AWAY FROM SHORE ALONG
THE PIER STRUCTURE.

&&

$$

MTF

PLEASE VISIT THE FOLLOWING WEBSITE TO SHARE YOUR THOUGHTS ON THE
NEW BEACH HAZARDS STATEMENT...

HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=CHMBHS

THEN AFTER DOING THE SURVEY VISIT US AT HTTP://WEATHER.GOV/CHICAGO

FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT:
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.CHICAGO.GOV
WWW.TWITTER.COM/NWSCHICAGO
WWW.YOUTUBE.COM/NWSCHICAGO
541 
WHUS43 KLOT 140938
CFWLOT

LAKESHORE HAZARD MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
438 AM CDT WED AUG 14 2013

ILZ006-141500-
/O.NEW.KLOT.BH.S.0011.130814T0938Z-130814T1500Z/
LAKE IL-
438 AM CDT WED AUG 14 2013

...BEACH HAZARDS STATEMENT IN EFFECT UNTIL 10 AM CDT THIS
MORNING...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS EXTENDED THE BEACH
HAZARDS STATEMENT FOR DANGEROUS SWIMMING CONDITIONS...WHICH IS IN
EFFECT UNTIL 10 AM CDT THIS MORNING. 

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED.

* STRONG RIP CURRENTS EXPECTED.

* STRONG STRUCTURAL CURRENTS EXPECTED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DANGEROUS POUNDING WAVES AND LIFE-THREATENING RIP 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 OUT AWAY FROM SHORE INTO
DEEPER WATER.

STRUCTURAL CURRENTS FORM ALONG PIERS AND BREAKWALLS WHERE
LONGSHORE CURRENTS AND WAVE ACTION FLOW INTO THE STRUCTURE.
STRUCTURAL CURRENTS CAN SWEEP YOU OUT OUT AWAY FROM SHORE ALONG
THE PIER STRUCTURE.

&&

$$

ILZ014-INZ001-002-141500-
/O.CON.KLOT.BH.S.0010.000000T0000Z-130814T1500Z/
COOK-LAKE IN-PORTER-
438 AM CDT WED AUG 14 2013

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 10 AM CDT THIS
MORNING...

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED.

* STRONG RIP CURRENTS EXPECTED.

* STRONG STRUCTURAL CURRENTS EXPECTED ALONG THE COOK COUNTY
  BEACHES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DANGEROUS POUNDING WAVES AND LIFE-THREATENING RIP 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 OUT AWAY FROM SHORE INTO
DEEPER WATER.

STRUCTURAL CURRENTS FORM ALONG PIERS AND BREAKWALLS WHERE
LONGSHORE CURRENTS AND WAVE ACTION FLOW INTO THE STRUCTURE.
STRUCTURAL CURRENTS CAN SWEEP YOU OUT OUT AWAY FROM SHORE ALONG
THE PIER STRUCTURE.

&&

$$

RC

PLEASE VISIT THE FOLLOWING WEBSITE TO SHARE YOUR THOUGHTS ON THE
NEW BEACH HAZARDS STATEMENT...

HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=CHMBHS

THEN AFTER DOING THE SURVEY VISIT US AT HTTP://WEATHER.GOV/CHICAGO

FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT:
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.CHICAGO.GOV
WWW.TWITTER.COM/NWSCHICAGO
WWW.YOUTUBE.COM/NWSCHICAGO
813 
WHUS43 KLOT 141437
CFWLOT

LAKESHORE HAZARD MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
937 AM CDT WED AUG 14 2013

ILZ006-141545-
/O.CAN.KLOT.BH.S.0011.000000T0000Z-130814T1500Z/
LAKE IL-
937 AM CDT WED AUG 14 2013

...BEACH HAZARDS STATEMENT IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS CANCELLED THE BEACH
HAZARDS STATEMENT. 

WAVES CONTINUE TO SUBSIDE ALONG THE FAR NORTHERN ILLINOIS
SHORELINE...THUS THE BEACH HAZARDS STATEMENT HAS BEEN CANCELLED.

$$

ILZ014-INZ001-002-141800-
/O.EXT.KLOT.BH.S.0010.000000T0000Z-130814T1800Z/
COOK-LAKE IN-PORTER-
937 AM CDT WED AUG 14 2013

...BEACH HAZARDS STATEMENT NOW IN EFFECT UNTIL 1 PM CDT THIS
AFTERNOON...

* HIGH WAVE ACTION AND DANGEROUS SWIMMING CONDITIONS EXPECTED.

* STRONG RIP CURRENTS EXPECTED.

* STRONG STRUCTURAL CURRENTS EXPECTED ALONG THE COOK COUNTY SHORE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DANGEROUS POUNDING WAVES AND LIFE-THREATENING RIP 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 OUT AWAY FROM SHORE INTO
DEEPER WATER.

STRUCTURAL CURRENTS FORM ALONG PIERS AND BREAKWALLS WHERE
LONGSHORE CURRENTS AND WAVE ACTION FLOW INTO THE STRUCTURE.
STRUCTURAL CURRENTS CAN SWEEP YOU OUT OUT AWAY FROM SHORE ALONG
THE PIER STRUCTURE.

&&

$$

RC/MTF

PLEASE VISIT THE FOLLOWING WEBSITE TO SHARE YOUR THOUGHTS ON THE
NEW BEACH HAZARDS STATEMENT...

HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=CHMBHS

THEN AFTER DOING THE SURVEY VISIT US AT HTTP://WEATHER.GOV/CHICAGO

FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT:
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.CHICAGO.GOV
WWW.TWITTER.COM/NWSCHICAGO
WWW.YOUTUBE.COM/NWSCHICAGO
903 
WHUS43 KLOT 141805
CFWLOT

LAKESHORE HAZARD MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
105 PM CDT WED AUG 14 2013

ILZ014-INZ001-002-141915-
/O.EXP.KLOT.BH.S.0010.000000T0000Z-130814T1800Z/
COOK-LAKE IN-PORTER-
105 PM CDT WED AUG 14 2013

...BEACH HAZARDS STATEMENT HAS EXPIRED...

WAVES CONTINUE TO SUBSIDE ACROSS ILLINOIS AND INDIANA SHORELINES.
THUS THE BEACH HAZARDS STATEMENT HAS BEEN ALLOWED TO EXPIRE.

$$

MTF

PLEASE VISIT THE FOLLOWING WEBSITE TO SHARE YOUR THOUGHTS ON THE
NEW BEACH HAZARDS STATEMENT...

HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=CHMBHS

THEN AFTER DOING THE SURVEY VISIT US AT HTTP://WEATHER.GOV/CHICAGO

FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT:
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.CHICAGO.GOV
WWW.TWITTER.COM/NWSCHICAGO
WWW.YOUTUBE.COM/NWSCHICAGO

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 Aug 12, 3:12 PM CDT, 24 minutes earlier.

Area forecast discussion, Aug 12, 3:12 PM CDT, 24 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
312 PM CDT MON AUG 12 2013

.DISCUSSION...
256 PM CDT

FORECAST CONCERNS THIS AFTERNOON CONTINUE TO CENTER ON SHRA/TSRA
TRENDS AND EVOLUTION THIS AFTERNOON AND EVENING AS WEAK COLD FRONT
SAGS SOUTH ACROSS THE CWA...THEN SHIFT TO COOLER THAN NORMAL TEMPS
ESPECIALLY TUESDAY AND WEDNESDAY AS CANADIAN HIGH PRESSURE BUILDS
SOUTHEAST ACROSS THE REGION.

THIS AFTERNOON/TONIGHT...

WEAK COLD FRONT WAS SAGGING SLOWLY SOUTHEAST ACROSS NORTHERN
ILLINOIS AT MID-AFTERNOON...WITH 19Z/2PM CDT SURFACE ANALYSIS
PLACING THE BOUNDARY ROUGHLY SOUTH OF WAUKEGAN...TO JUST EAST OF
STERLING...TO NEAR GALESBURG. SHRA/TSRA HAVE BEEN SLOW TO DEVELOP
ALONG AND AHEAD OF THE FRONT SINCE LATE MORNING...LARGELY IN
RESPONSE TO A FAIRLY DENSE SHIELD OF THICK CIRRUS OFF CONVECTION TO
OUR SOUTHWEST ACROSS MISSOURI. HOWEVER...ISOLATED TO SCATTERED
SHRA/TSRA HAVE BEGUN TO DEVELOP/INCREASE IN COVERAGE OVER THE PAST
1-2 HOURS AHEAD OF THE FRONT AS ANTICIPATED. EXPECTATION IS THAT
THIS ACTIVITY WILL CONTINUE TO DEVELOP THIS AFTERNOON AS FRONT
PUSHES INTO WEAKLY TO MODERATELY UNSTABLE ENVIRONMENT ACROSS THE
CENTRAL AND SOUTHERN PARTS OF THE CWA. AREAS AHEAD OF THE
FRONT...AND ALONG COMBINED FRONTAL/LAKE BREEZE BOUNDARY WORKING
SOUTH ALONG THE LAKE APPEAR TO BE FAVORED AREAS FOR CONTINUED GROWTH
GENERALLY ACROSS THE SOUTHEAST HALF OF THE CWA. SPC/RAP MESOANALYSIS
AT 19Z INDICATED EFFECTIVE BULK SHEAR REMAINS IN THE 25-30 KT RANGE
SIMILAR TO THE 0-6 KM LAYER VALUE...ALONG WITH SEVERAL HUNDRED J/KG
OF DOWNDRAFT CAPE PARTICULARLY ALONG THE SURFACE FRONT ITSELF. THUS
WHILE WIDESPREAD SEVERE STORMS NOT LIKELY...A FEW OF THE STRONGER
CELLS COULD PRODUCE ISOLATED 50-60 MPH WIND GUSTS LATER THIS
AFTERNOON. ALSO...PWATS AROUND 1.5 INCHES IN MOIST AXIS WITHIN/AHEAD
OF FRONTAL ZONE COULD FAVOR SOME LOCALLY HEAVY DOWNPOURS WITH FAIRLY
SLOW EASTERLY CELL MOVEMENT IF ANY SIGNIFICANT TRAINING OCCURS. AREA
OF STORMS SHOULD CONTINUE TO SLIDE SOUTHEAST WITH THE FRONT INTO
THIS EVENING...WITH PRECIP ENDING FROM THE NORTH. SCATTERED
THUNDERSTORMS WERE ALSO NOTED FARTHER NORTH ACROSS WISCONSIN THIS
AFTERNOON...BENEATH DIGGING SHORT WAVE AND WITH SECONDARY COLD
FRONTAL BOUNDARY IN THAT AREA. THIS SECONDARY FRONT WILL MOVE SOUTH
INTO OUR FORECAST AREA TONIGHT...THOUGH SHRA/TSRA COVERAGE ACROSS WI
SHOULD DECREASE AS THE FRONT ARRIVES WITH UNFAVORABLE DIURNAL
ARRIVAL AFTER SUNSET. THUS HAVE EVENING POPS ACROSS THE SOUTHEAST...
THEN DRY ACROSS THE AREA AFTER MIDNIGHT.

TUESDAY THROUGH WEDNESDAY NIGHT...

SECONDARY COLD FRONT WILL BE PUSHING OUT OF THE SOUTHERN COUNTIES OF
THE CWA TUESDAY MORNING...WITH VERY COOL AND BREEZY NORTH-NORTHEAST
LOW LEVEL FLOW DEVELOPING IN SOUTHEASTERN PERIPHERY OF EXPANSIVE
AREA OF SURFACE HIGH PRESSURE WHICH WILL BE BUILDING SOUTHEAST FROM
CENTRAL CANADA. 850MB TEMPS COOL TO AROUND +8C BY EVENING...WITH LOW
LEVEL MODEL THERMAL PROGS SUGGESTING HIGHS MAY STRUGGLE TO BREAK 70
DEGREES ALONG THE IMMEDIATE LAKE MICHIGAN SHORE WHILE MAKING ONLY
MID 70S WELL INLAND ACROSS THE FORECAST AREA. SOME COLD-AIR STRATOCU
IS POSSIBLE...THOUGH DRYING LOW LEVELS ESPECIALLY DURING THE
AFTERNOON SHOULD ALLOW FOR A GOOD DEAL OF SUNSHINE TO COUNTERACT THE
CANADIAN AIR. WINDS WILL DIMINISH TUESDAY NIGHT AS THE HIGH
CONTINUES TO SPREAD SOUTHEAST INTO THE REGION...WITH THE WEAK
PRESSURE GRADIENT IN THE VICINITY OF THE RIDGE AXIS THEN PROVIDING
LIGHT WINDS ALONG WITH MAINLY CLEAR SKIES FOR COOL OVERNIGHT
TEMPERATURES BOTH TUESDAY NIGHT AND WEDNESDAY NIGHT. AREAS ON BOTH
NIGHTS SHOULD EASILY REACH THE LOWER 50S AWAY FROM THE CHICAGO HEAT
ISLAND...WITH A FEW CHILLY UPPER 40S A GOOD BET IN SOME OF THE
TYPICALLY COLDER SPOTS IN THE OUTLYING SUBURBAN AND RURAL AREAS.
WEDNESDAY WILL AGAIN REMAIN A GOOD 7-12 DEGREES BELOW OUR MID-AUGUST
NORMALS WITH MID-70S FOR THE MOST PART UNDER THE COOL POOL ALOFT...
AND LAKE MICHIGAN SHORE AREAS AROUND 70 WITH A LAKE BREEZE
ENHANCEMENT OF THE DECREASING SYNOPTIC NORTHERLY FLOW. AT THIS TIME
IT APPEARS THAT RECORD LOW MAX TEMPS WHICH ARE GENERALLY IN THE MID
60S SHOULD NOT BE IN JEOPARDY TUE-WED...THOUGH RECORD LOWS FOR
WEDNESDAY AND THURSDAY MORNING ARE IN THE LOW/MID 40S AT ROCKFORD
AND ITS NOT IMPOSSIBLE THAT A FEW RURAL SPOTS MAY APPROACH THESE LOW
TEMPS WEDNESDAY OR THURSDAY MORNING.

THURSDAY THROUGH MONDAY...

OVERALL...THE UPPER LEVEL FLOW PATTERN WILL MAINTAIN AN UPPER RIDGE
OVER THE WESTERN CONUS/ROCKIES REGION...AND BROAD UPPER TROUGHING
ACROSS EASTERN CANADA AND THE EASTERN CONUS. THIS WILL ALLOW THE
SPRAWLING SURFACE HIGH OVER OUR REGION AT MID-WEEK TO CONTINUE TO
DRIFT SLOWLY SOUTHEAST AND WEAKEN ACROSS THE SOUTHERN GREAT LAKES
AND OHIO VALLEY REGION THROUGH FRIDAY. EXTENDED GUIDANCE THEN IS IN
FAIRLY GOOD AGREEMENT IN DEVELOPING ADDITIONAL UPPER TROUGHING AND
EVENTUALLY A WEAK CLOSED UPPER LOW OVER THE LOWER MISSOURI AND LOWER
OHIO VALLEYS NEXT WEEKEND. THIS KEEPS A WEST-EAST SURFACE HIGH
PRESSURE RIDGE ACROSS THE GREAT LAKES REGION TO OUR EAST...WITH
LITTLE QUALITY LOW-LEVEL MOISTURE RETURN FROM THE GULF EXCEPT FOR
FARTHER TO THE WEST ACROSS THE SOUTHERN/HIGH PLAINS. THIS GENERALLY
FOCUSES GREATER PROBABILITY FOR PRECIPITATION CHANCES TO REMAIN
WEST/SOUTH OF OUR IMMEDIATE FORECAST AREA THROUGH THE PERIOD...WITH
A VERY GRADUAL MODERATION IN TEMPS IN THE THURSDAY-MONDAY PERIOD
BACK TO ABOUT AVERAGE BY SUNDAY/MONDAY. SOME INCREASE IN LOW-CHANCE
POPS COULD BE ARGUED AS THE UPPER LOW/TROUGH DEVELOPS LATE IN THE
PERIOD...THOUGH APPEARS TO LOW/IFFY AT THIS DISTANCE HAND HAVE
MAINTAINED DRY FORECAST THROUGH THE EXTENDED.

RATZER

&&

.AVIATION...

//ORD AND MDW CONCERNS...UPDATED 20Z...

* SCATTERED SHRA/TSRA THROUGH LATE AFTERNOON.
* WIND SHIFT TO NORTHEAST MID/LATE AFTERNOON.
* CHANCE OF MVFR CIGS OVERNIGHT/EARLY TUESDAY MORNING. CMS

//DISCUSSION...UPDATED 18Z...

SEVERAL FORECAST CONCERNS THIS PERIOD WITH THE TWO PRIMARY
CONCERNS TSRA POTENTIAL AND WIND SHIFT...BOTH THIS AFTERNOON.
A COLD FRONT EXTENDING FROM SOUTHEAST WI THROUGH NORTHWEST IL WILL
CONTINUE TO MOVE ACROSS THE TERMINALS THROUGH MID AFTERNOON. WINDS
HAVE SHIFTED LIGHT NORTHEASTERLY ACROSS SOUTHEAST WI AND WITH
PRECIP NOW DEVELOPING ALONG THE FRONT ACROSS FAR SOUTHEAST WI...
EXPECT THIS TO AID THE COLD FRONT/LAKE BREEZE TO ACCELERATE TO THE
SOUTHWEST THROUGH THE AFTERNOON. SO WHILE WINDS PROBABLY WILL TURN
NORTHWEST AT ORD/MDW...NOT SURE THE DURATION WILL BE TOO LONG AS
WINDS WILL LIKELY SHIFT NORTHEAST SOONER RATHER THAN LATER BUT
WILL NEED TO MONITOR TRENDS INTO THE AFTERNOON.

SHORT TERM/HI RES GUIDANCE HAS BEEN IN FAIR AGREEMENT WITH SHRA/
TSRA DEVELOPMENT EARLY THIS AFTERNOON ACROSS NORTHERN IL AND THEN
SHIFTING IT SLOWLY SOUTHEAST ACROSS THE TERMINALS THROUGH MID/LATE
AFTERNOON BUT CURRENT ACTIVITY HAS DEVELOPED A LITTLE FURTHER
NORTH AND SO FAR HAS REMAINED ISOLATED. MAINTAINED PREVIOUS VCTS
TIMING BUT EXPECT THIS WILL NEED TO BE TWEAKED...IN PARTICULAR...
PRECIP MAY LINGER A BIT LONGER THEN CURRENTLY ADVERTISED.

MVFR CLOUDS ACROSS SOUTHERN WI ESPECIALLY OVER SOUTHEAST WI COULD
DRIFT SOUTH BEHIND THE COLD FRONT/LAKE BREEZE BUT CONFIDENCE
REGARDING ANY POTENTIAL MVFR CIGS LATER THIS AFTERNOON...AND
THEIR DURATION IS LOW. A SECONDARY SURGE OF COLDER AIR ARRIVES
LATE TONIGHT AND AS THIS SPREADS ACROSS THE AREA...EXPECT SOME
LOWER CLOUD POTENTIAL...IN THE 1-2KFT RANGE BUT CIGS MAY BE
CONFINED CLOSER TO THE LAKE.

NORTH/NORTHEAST WINDS WILL DIMINISH THIS EVENING...POSSIBLY
TURNING BACK NORTHWESTERLY UNTIL THAT SURGE OF COLDER AIR ARRIVES
AND TURNS WINDS BACK NORTH/NORTHEAST WITH SPEEDS 10-12KTS. AFTER
SUNRISE...LOW LEVELS BEGIN TO MIX WITH GUSTS 18-20KTS POSSIBLE
THROUGH EARLY AFTERNOON. CMS

//ORD AND MDW CONFIDENCE...UPDATED 20Z...

* HIGH FOR SHRA/TSRA THROUGH LATE AFTERNOON...MEDIUM FOR DIRECT
  IMPACTS AT ORD/MDW.
* HIGH FOR A WIND SHIFT TO THE NORTH/NORTHEAST MID/LATE
  AFTERNOON...MEDIUM FOR TIMING.
* LOW FOR POTENTIAL MVFR CIGS OVERNIGHT/EARLY TUESDAY MORNING.
* HIGH FOR WIND SPEEDS/GUSTS OVERNIGHT/TUESDAY. CMS

//OUTLOOK FOR ORD/MDW FOR 00Z WEDNESDAY-12Z MONDAY...UPDATED 12Z...

TUESDAY NIGHT THROUGH SUNDAY...VFR. DAILY LAKE BREEZE WIND SHIFTS
EXPECTED.

RC

&&

.MARINE...
308 PM CDT

AN INITIAL WIND SHIFT TO NORTH/NORTHEAST IS OCCURRING ACROSS THE
SOUTHERN PART OF THE LAKE LATE THIS AFTERNOON ALONG WITH SCATTERED
GUSTY STORMS /GUST TO 33 KT AT NEARBY MDW AIRPORT/. THE PRIMARY
FRONT WILL MOVE SOUTH ACROSS THE LAKE EARLY THIS EVE...WITH A
SECONDARY MOMENTUM PUSH LATE THIS EVE. THIS WILL BOOST NORTHERLY
WINDS INTO THE 15 TO 25 KT CATEGORY TONIGHT INTO TUESDAY. WAVES
WILL FOLLOW SUIT BUILDING QUICKLY LATER TONIGHT AND CONTINUE TO
INCH UP ACROSS THE SOUTHERN PART OF THE LAKE THROUGH TUESDAY. HIGH
PRESSURE WILL THEN PREVAIL OVER THE LAKE BY LATE TUESDAY NIGHT
INTO WEDNESDAY AND CONTINUE ITS INFLUENCE EVEN AS IT SETTLES JUST
SOUTH OF THE GREAT LAKES REGION THROUGH THE LATTER HALF OF THE
WEEK.

MTF

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...NONE.
IN...NONE.
LM...SMALL CRAFT ADVISORY...LMZ743-LMZ744-LMZ745...4 AM TUESDAY TO 7
     AM WEDNESDAY.

     SMALL CRAFT ADVISORY...LMZ740-LMZ741-LMZ742...4 AM TUESDAY TO 4
     AM WEDNESDAY.

&&

VISIT US AT HTTP://WEATHER.GOV/CHICAGO (ALL LOWERCASE)

FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT:
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.CHICAGO.GOV
WWW.TWITTER.COM/NWSCHICAGO
WWW.YOUTUBE.COM/NWSCHICAGO
Hazardous weather outlook, Aug 12, 11:02 AM CDT, 4 hours 34 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1102 AM CDT MON AUG 12 2013

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
131615-
WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE-
DUPAGE-COOK-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-
IROQUOIS-FORD-LAKE INDIANA-PORTER-NEWTON-JASPER-BENTON-
1102 AM CDT MON AUG 12 2013 /1202 PM EDT MON AUG 12 2013/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THERE IS A CHANCE OF THUNDERSTORMS ACROSS THE OUTLOOK AREA THIS
AFTERNOON...PARTICULARLY ACROSS THE SOUTHEAST TWO THIRDS OF THE
OUTLOOK AREA...OR ROUGHLY SOUTHEAST OF A LINE FROM MENDOTA TO
EVANSTON ILLINOIS.

WIDESPREAD SEVERE WEATHER IS NOT EXPECTED...THOUGH A FEW OF THE
STRONGER STORMS COULD PRODUCE WIND GUSTS NEAR 60 MPH...QUARTER
SIZE HAIL...AND LOCALLY HEAVY RAINFALL THIS AFTERNOON MAINLY SOUTH
OF INTERSTATE 80. A FEW SCATTERED THUNDERSTORMS MAY LINGER INTO
TONIGHT SOUTH OF THE ILLINOIS AND KANKAKEE RIVER VALLEYS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

HAZARDOUS SWIMMING CONDITIONS ARE EXPECTED AT LAKE MICHIGAN
BEACHES TUESDAY MORNING THROUGH WEDNESDAY MORNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.

&&

LMZ740>745-131615-
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY-
GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY-
1102 AM CDT MON AUG 12 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS NEARSHORE
WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE WATERS OF LAKE
MICHIGAN.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THERE IS A CHANCE OF THUNDERSTORMS THIS AFTERNOON. SEVERE WEATHER
IS NOT EXPECTED...THOUGH THE POTENTIAL MAY EXIST FOR A FEW STRONG
STORMS WHICH COULD PRODUCE WIND GUSTS IN EXCESS OF 35 KT THIS
AFTERNOON ESPECIALLY ACROSS THE INDIANA NEARSHORE WATERS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

WAVES HAZARDOUS TO SMALL CRAFT ARE POSSIBLE LATE TUESDAY MORNING
THROUGH WEDNESDAY MORNING.

&&

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-131615-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN SOUTH OF A LINE FROM SEUL CHOIX POINT TO THE
MACKINAC BRIDGE AND NORTH OF A LINE FROM CHARLEVOIX MI TO SOUTH
FOX ISLAND 5 NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
1102 AM CDT MON AUG 12 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE
MICHIGAN.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THERE IS A CHANCE OF THUNDERSTORMS ACROSS MAINLY THE SOUTH HALF
OF THE LAKE THIS AFTERNOON. A FEW STORMS COULD BE STRONG...WITH
THE POTENTIAL TO PRODUCE WIND GUSTS IN EXCESS OF 35 KT...MAINLY
ALONG THE SOUTH SHORE OF LAKE MICHIGAN.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

&&

RATZER

VISIT US AT HTTP://WEATHER.GOV/CHICAGO (ALL LOWERCASE)

FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT:
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 12, 3:08 PM CDTSmall Craft AdvisoryLOT42 hr
Aug 12, 6:28 PM CDTSevere Thunderstorm WarningLOTJasper, Lake, Porter47 min

Nearby

Beach Hazards Statements in Indiana, 2013Beach Hazards Statements in Illinois, 2013Every beach hazards statement in 2013

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.