Gale Warning 37, NWS Chicago, IL

000 
WHUS73 KLOT 220308
MWWLOT

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
1008 PM CDT FRI SEP 21 2012

.LOW PRESSURE WILL QUICKLY DEEPEN WHILE TRACKING FROM THE NORTHERN
LAKES TO HUDSON BAY SATURDAY. AT THE SAME TIME...COLDER AIR WILL
SURGE OVER THE LAKE. NORTHWEST WINDS WILL THEN INCREASE TO GALES
OVER THE FAR NORTHERN PORTION OF THE LAKE SATURDAY AFTERNOON AND
PERSIST INTO THROUGH SATURDAY EVENING.

LMZ261-362-364-563-221115-
/O.CON.KLOT.GL.W.0037.120922T1900Z-120923T0400Z/
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 ROCK ISLAND PASSAGE TO STURGEON BAY WI-
1008 PM CDT FRI SEP 21 2012

...GALE WARNING REMAINS IN EFFECT FROM 2 PM TO 11 PM CDT
SATURDAY...

* WINDS...NORTHWEST TO 35 KT.

* SIGNIFICANT WAVES...12 TO 16 FT.

* OCCASIONAL WAVES...UP TO 24 KT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE SEEK SAFE
HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

LMZ744-745-221115-
/O.CON.KLOT.SC.Y.0088.120922T1500Z-120924T1500Z/
GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY-
1008 PM CDT FRI SEP 21 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 AM SATURDAY TO
10 AM CDT MONDAY...

* WINDS...NORTHWEST WINDS TO 20 TO 25 KT.

* SIGNIFICANT WAVES...8 TO 12 FT.

* OCCASIONAL WAVES...UP TO 18 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS OF 22 TO 33 KNOTS AND/OR
WAVES GREATER THAN 4 FT WILL PRODUCE HAZARDOUS CONDITIONS FOR
SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING
SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

LMZ740>743-221115-
/O.CON.KLOT.SC.Y.0088.120922T2100Z-120924T0500Z/
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY-
1008 PM CDT FRI SEP 21 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM SATURDAY TO
MIDNIGHT CDT SUNDAY NIGHT...

* WINDS...NORTHWEST WINDS UP TO 15 TO 25 KT.

* SIGNIFICANT WAVES...5 TO 7 FT.

* OCCASIONAL WAVES...UP TO 11 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS OF 22 TO 33 KNOTS AND/OR
WAVES GREATER THAN 4 FT WILL PRODUCE HAZARDOUS CONDITIONS FOR
SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING
SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

RODRIGUEZ

443 
WHUS73 KLOT 220837
MWWLOT

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
337 AM CDT SAT SEP 22 2012


LMZ261-362-364-563-221645-
/O.CON.KLOT.GL.W.0037.120922T1900Z-120923T0400Z/
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 ROCK ISLAND PASSAGE TO STURGEON BAY WI-
337 AM CDT SAT SEP 22 2012

...GALE WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO
11 PM CDT THIS EVENING...

* WINDS...NORTHWEST TO 35 KT.

* SIGNIFICANT WAVES...10 TO 14 FT.

* OCCASIONAL WAVES...UP TO 20 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE SEEK SAFE
HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

LMZ744-745-221645-
/O.EXT.KLOT.SC.Y.0088.120922T0837Z-120924T1500Z/
GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY-
337 AM CDT SAT SEP 22 2012

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 AM CDT MONDAY...

* WINDS...WEST WINDS TO 30 KT BECOMING NORTHWEST.

* SIGNIFICANT WAVES...8 TO 12 FT.

* OCCASIONAL WAVES...UP TO 18 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS OF 22 TO 33 KNOTS AND/OR
WAVES GREATER THAN 4 FT WILL PRODUCE HAZARDOUS CONDITIONS FOR
SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING
SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

LMZ740>743-221645-
/O.EXT.KLOT.SC.Y.0088.120922T1400Z-120924T0500Z/
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY-
337 AM CDT SAT SEP 22 2012

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 9 AM THIS MORNING TO
MIDNIGHT CDT SUNDAY NIGHT...

* WINDS...NORTHWEST WINDS UP TO 30 KT.

* SIGNIFICANT WAVES...5 TO 7 FT.

* OCCASIONAL WAVES...UP TO 11 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS OF 22 TO 33 KNOTS AND/OR
WAVES GREATER THAN 4 FT WILL PRODUCE HAZARDOUS CONDITIONS FOR
SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING
SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

KJB

812 
WHUS73 KLOT 222001
MWWLOT

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
301 PM CDT SAT SEP 22 2012

LMZ261-362-364-563-230400-
/O.CON.KLOT.GL.W.0037.000000T0000Z-120923T0400Z/
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 ROCK ISLAND PASSAGE TO STURGEON BAY WI-
301 PM CDT SAT SEP 22 2012

...GALE WARNING REMAINS IN EFFECT UNTIL 11 PM CDT THIS EVENING...

* WINDS...NORTHWEST TO 35 KT.

* SIGNIFICANT WAVES...10 TO 14 FT.

* OCCASIONAL WAVES...UP TO 18 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE SEEK SAFE
HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

LMZ744-745-230415-
/O.CON.KLOT.SC.Y.0088.000000T0000Z-120924T1500Z/
GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY-
301 PM CDT SAT SEP 22 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM CDT
MONDAY...

* WINDS...WEST WINDS TO 25 KT BECOMING NORTHWEST.

* SIGNIFICANT WAVES...7 TO 10 FT.

* OCCASIONAL WAVES...UP TO 17 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS OF 22 TO 33 KNOTS AND/OR
WAVES GREATER THAN 4 FT WILL PRODUCE HAZARDOUS CONDITIONS FOR
SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING
SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

LMZ740>743-230415-
/O.CON.KLOT.SC.Y.0088.000000T0000Z-120924T0500Z/
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY-
301 PM CDT SAT SEP 22 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT
SUNDAY NIGHT...

* WINDS...NORTHWEST WINDS UP TO 25 KT.

* SIGNIFICANT WAVES...4 TO 6 FT.

* OCCASIONAL WAVES...UP TO 10 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS OF 22 TO 33 KNOTS AND/OR
WAVES GREATER THAN 4 FT WILL PRODUCE HAZARDOUS CONDITIONS FOR
SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING
SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

KREIN

237 
WHUS73 KLOT 230156
MWWLOT

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
856 PM CDT SAT SEP 22 2012

LMZ261-362-364-563-230900-
/O.EXT.KLOT.GL.W.0037.000000T0000Z-120923T0900Z/
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 ROCK ISLAND PASSAGE TO STURGEON BAY WI-
856 PM CDT SAT SEP 22 2012

...GALE WARNING NOW IN EFFECT UNTIL 4 AM CDT SUNDAY...

* WINDS...NORTHWEST TO 35 KT.

* SIGNIFICANT WAVES...UP TO 12 FT.

* OCCASIONAL WAVES...UP TO 18 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE SEEK SAFE
HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

&&

$$

LMZ744-745-231000-
/O.CON.KLOT.SC.Y.0088.000000T0000Z-120924T1500Z/
GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY-
856 PM CDT SAT SEP 22 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM CDT
MONDAY...

* WINDS...WEST WINDS TO 25 KT BECOMING NORTHWEST.

* SIGNIFICANT WAVES...7 TO 10 FT.

* OCCASIONAL WAVES...UP TO 15 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS OF 22 TO 33 KNOTS AND/OR
WAVES GREATER THAN 4 FT WILL PRODUCE HAZARDOUS CONDITIONS FOR
SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING
SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

LMZ740>743-231000-
/O.CON.KLOT.SC.Y.0088.000000T0000Z-120924T0500Z/
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY-
856 PM CDT SAT SEP 22 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT
SUNDAY NIGHT...

* WINDS...NORTHWEST WINDS UP TO 25 KT.

* SIGNIFICANT WAVES...4 TO 6 FT.

* OCCASIONAL WAVES...UP TO 9 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS OF 22 TO 33 KNOTS AND/OR
WAVES GREATER THAN 4 FT WILL PRODUCE HAZARDOUS CONDITIONS FOR
SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING
SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

RATZER

102 
WHUS73 KLOT 230820
MWWLOT

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
320 AM CDT SUN SEP 23 2012

LMZ261-362-364-563-231630-
/O.CAN.KLOT.GL.W.0037.000000T0000Z-120923T0900Z/
/O.NEW.KLOT.GL.A.0022.120924T1200Z-120925T0300Z/
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 ROCK ISLAND PASSAGE TO STURGEON BAY WI-
320 AM CDT SUN SEP 23 2012

...GALE WATCH IN EFFECT FROM MONDAY MORNING THROUGH MONDAY
EVENING...
...GALE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A GALE WATCH...
WHICH IS IN EFFECT FROM MONDAY MORNING THROUGH MONDAY EVENING.
THE GALE WARNING FOR EARLY THIS MORNING HAS BEEN CANCELLED.

* WINDS...SOUTHWEST TO 40 KT...WITH 45 KT POSSIBLE.

* SIGNIFICANT WAVES...UP TO 18 FT.

* OCCASIONAL WAVES...UP TO 27 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WATCH IS ISSUED WHEN THE RISK OF GALE FORCE WINDS OF 34 TO
47 KNOTS HAS SIGNIFICANTLY INCREASED...BUT THE SPECIFIC TIMING
AND/OR LOCATION IS STILL UNCERTAIN. IT IS INTENDED TO PROVIDE
ADDITIONAL LEAD TIME FOR MARINERS WHO MAY WISH TO CONSIDER
ALTERING THEIR PLANS.

&&

$$

LMZ744-745-231630-
/O.CON.KLOT.SC.Y.0088.000000T0000Z-120924T1500Z/
GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY-
320 AM CDT SUN SEP 23 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM CDT
MONDAY...

* WINDS...NORTHWEST WINDS TO 25 KT.

* SIGNIFICANT WAVES...6 TO 9 FT.

* OCCASIONAL WAVES...UP TO 14 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS OF 22 TO 33 KNOTS AND/OR
WAVES GREATER THAN 4 FT WILL PRODUCE HAZARDOUS CONDITIONS FOR
SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING
SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

LMZ740>743-231630-
/O.CON.KLOT.SC.Y.0088.000000T0000Z-120924T0500Z/
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY-
320 AM CDT SUN SEP 23 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT
TONIGHT...

* WINDS...NORTHWEST WINDS UP TO 20 KT.

* SIGNIFICANT WAVES...3 TO 6 FT.

* OCCASIONAL WAVES...UP TO 9 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WINDS OF 22 TO 33 KNOTS AND/OR
WAVES GREATER THAN 4 FT WILL PRODUCE HAZARDOUS CONDITIONS FOR
SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING
SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

LMZ366-565-567-868-231630-
/O.NEW.KLOT.GL.A.0022.120924T1200Z-120925T0300Z/
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
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 PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
320 AM CDT SUN SEP 23 2012

...GALE WATCH IN EFFECT FROM MONDAY MORNING THROUGH MONDAY
EVENING...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A GALE WATCH...
WHICH IS IN EFFECT FROM MONDAY MORNING THROUGH MONDAY EVENING. 

* WINDS...SOUTHWEST TO 40 KT...WITH 45 KT POSSIBLE.

* SIGNIFICANT WAVES...UP TO 18 FT.

* OCCASIONAL WAVES...UP TO 27 FT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WATCH IS ISSUED WHEN THE RISK OF GALE FORCE WINDS OF 34 TO
47 KNOTS HAS SIGNIFICANTLY INCREASED...BUT THE SPECIFIC TIMING
AND/OR LOCATION IS STILL UNCERTAIN. IT IS INTENDED TO PROVIDE
ADDITIONAL LEAD TIME FOR MARINERS WHO MAY WISH TO CONSIDER
ALTERING THEIR PLANS.

&&

$$

MDB

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
307 PM CDT FRI SEP 21 2012

.MESOSCALE DISCUSSION...
300 PM CDT

CONTINUE TO MONITOR POTENTIAL FOR A COUPLE SEVERE STORMS ACROSS
THE SOUTHERN FORECAST AREA...PRIMARILY ALONG AND SOUTH OF U.S.
HIGHWAY 24.

STRONG WELL-ALIGNED UPPER AND MID LEVEL NORTHWESTERLY JETS
CONTINUE TO PROGRESS SOUTHEAST FROM IA WITH AN
ELONGATED SHORT WAVE...POSSIBLY TWO...IMPULSE FROM SOUTHERN MN
INTO SOUTHEAST IA. LATEST HAND SURFACE ANALYSIS DEPICTS A 1005 MB
SURFACE LOW NEAR PITTSFIELD IN WEST CENTRAL IL WITH STRONG
PRESSURE FALLS OF ALMOST 5 MB/3 HR IN ADVANCE. THIS IS WELL
ALIGNED WITH ROBUST LOW-LEVEL TD ADVECTION /8-14F CLIMBS PER
HOUR/ INTO THE MID TO UPPER 50S FROM SPI/TAZ SOUTHEASTWARD ACROSS
THE ILX CWA. THIS AREA HIGHLIGHTS WHERE THE DEVELOPING SURFACE
WARM FRONT IS AND LIKELY NEAR THE NORTHERN EXTENT OF ANY SURFACE-
BASED UPDRAFT POTENTIAL. DEW POINTS REMAIN LOW NORTH OF THIS
AREA...INCLUDING IN THE SOUTHERN FORECAST AREA WHERE NAMELY MID
40S PREVAIL ALONG WITH MORE OF AN EASTERLY WIND COMPONENT. WHILE
THE MOISTENING BOUNDARY LAYER IS MOVING NORTH QUICKLY IN ADVANCE
OF THE LOW...AT THIS TIME IT DOES NOT LOOK TO MAKE IT ALL THE WAY
TO THE SOUTHERN FORECAST AREA. SO THE MAIN CONCERNS REMAIN FOR
ELEVATED STORMS.

MID-LEVEL FLOW ANALYZED BY UPSTREAM PROFILES AND THE RAP MODEL OF
OVER 50 KT IS CONTRIBUTING TO DEEP LAYER SHEAR AT OR IN EXCESS OF
60 KT INTO CENTRAL IL. STRENGTHENING SOUTHERLY 850 MB FLOW AND
MOISTURE TRANSPORT AHEAD OF THE DEVELOPING LOW PRESSURE IS
FURTHERING THE CROSSOVER COMPONENT NEAR THE INTERSTATE 74 CORRIDOR
AND UP TO THE SOUTHERN CWA. INSTABILITY IS SOMEWHAT MEAGER...BUT
LIKELY UNDERDONE BY MOST GUIDANCE GIVEN THE CONVECTIVE
TRENDS...AND COULD BE NEAR 500 J/KG. TOGETHER THIS COULD SUPPORT
BRIEF ELEVATED SUPERCELLS OR POSSIBLY A SMALL ARC/CLUSTER OF
STORMS TRACKING ACROSS THE FAR SOUTHERN FORECAST AREA BETWEEN 4
AND 7 PM...CAPABLE OF MAINLY A HAIL THREAT.

MTF

&&

//PREV DISCUSSION...
338 AM CDT

SYNOPSIS...AN UPPER LEVEL TROUGH WILL REMAIN CENTERED OVER THE
WESTERN GREAT LAKES THROUGH SATURDAY...WITH LOBES OF ENERGY
ROTATING AROUND IT. AS SUCH...LOOKING AT A VERY COOL AND RAINY END
TO THE WORK WEEK. THE TROUGH AXIS SHIFTS EAST LATE THIS WEEKEND
WITH A SECOND TROUGH SINKING SOUTH INTO ONTARIO ON TUESDAY. THIS
SECOND TROUGH REMAINS NORTH OF THE CWA ALLOWING SOUTHWEST WINDS TO
USHER IN MORE SEASONAL TEMPS BY TUESDAY. THE UPPER LEVEL TROUGH
SINKS SOUTH INTO THE CWA LATE NEXT WEEK RESULTING IN ANOTHER ROUND
OF SHOWERS AND BELOW NORMAL TEMPS.

TODAY THROUGH SATURDAY...
AN UPPER LEVEL JET STREAK REMAINS OVER THE NORTHERN PLAINS...WITH
ITS LEFT JET EXIT REGION SETTING UP OVER NORTHEASTERN IOWA.  AT THE
SAME TIME AN UPPER LEVEL SHORTWAVE CURRENTLY IN EAST CENTRAL MN
BASED ON WV IMAGERY...WILL SLIDE THROUGH CENTRAL WI THIS MORNING.
SHOWERS HAVE ALREADY DEVELOPED ALONG THE NOSE OF THE JET AND
SHORTWAVE THIS MORNING...AND EXPECTING THE SHOWERS TO MOVE INTO THE
RFD AREA BY  MID MORNING AND SPREAD EASTWARD.  THE GREATEST CHANCE
FOR PRECIP WILL BE ALONG THE IL/WI STATE LINE WHERE FORCING LOOKS TO
BE MAXIMIZED.  SHOWERS ARE EXPECTED NORTH OF I-80...AND SOME COULD
BE HEAVY AT TIMES.

A WEAK SURFACE LOW OVER EASTERN SOUTH DAKOTA WILL SINK SOUTH AND
STRENGTHEN OVER MISSOURI THIS AFTERNOON. CONVECTION WITH THIS LOW
LOOKS MORE LIKELY SOUTH OF THE CWA...BUT INCREASED POPS ALONG AND
SOUTH OF THE I-80 CORRIDOR LATE THIS AFTERNOON WITH THERE BEING A
GOOD CHANCE SOME OF THE SHRA THAT FORM OUT AHEAD OF THE LOW WILL
CROSS INTO THE CWA. MODEL SOUNDINGS ARE NOT IMPRESSIVE WITH
REGARDS TO THUNDER...THEREFORE WENT WITH JUST SHOWERS. THIS
SOUTHERN SYSTEM MAY ALSO AFFECT THE RAIN SHOWERS TO THE NORTH.
DEPENDING ON HOW STRONG THE LOW GETS AND HOW SIGNIFICANT THE SHRA
AND TSRA ARE OUT AHEAD OF IT...THERE IS A CHANCE THAT THE SOUTHERN
SYSTEM COULD STEAL MOISTURE FROM THE SHRA ALONG THE IL/WI BORDER.
THIS MAY TURN INTO A HIGH POP/LOW QPF SITUATION DEPENDING ON HOW
THINGS DEVELOP. ALL IN ALL...THE BEST CHANCE FOR MEASURABLE PRECIP
THROUGH TONIGHT REMAINS NORTH OF THE I-80 CORRIDOR...ESPECIALLY
ALONG THE IL/WI BORDER.

RAIN TRANSITIONS EASTWARD WITH THE SHORTWAVE IN THE EVENING AND
OVERNIGHT. WITH THE UPPER LEVEL JET LYING JUST SOUTH OF THE
CWA...ANOTHER CHILLY NIGHT IS EXPECTED WITH OUTLYING AREAS IN THE
LOW TO MID 40S...AND AROUND 50 DOWNTOWN.

A COLD FRONT APPROACHES FROM THE NORTHWEST EARLY SATURDAY
BRINGING ANOTHER CHANCE OF RAIN. THE UPPER LEVEL JET WEAKENS AS
THE FRONT ARRIVES...RESULTING IN LESS SYNOPTIC SUPPORT THAN
FRIDAYS RAIN. FORCING AND MOISTURE ALONG THE FRONT ALSO DIMINISH
AS THE FRONT PASSES THROUGH NORTHERN ILLINOIS. HOWEVER...EXPECTING
MEASURABLE PRECIP NORTH OF A LA SALLE-FOWLER LINE FROM THE PREDAWN
HOURS THROUGH THE MID AFTERNOON HOURS. BY EVENING THE FRONT WILL
BE THROUGH THE WITH NORTHWEST WINDS AND A STRONG PUSH OF COLD AIR.

BROUGHT LOW TEMPS DOWN BY A FEW DEGREES ACROSS THE BOARD FOR
SATURDAY NIGHT. GUIDANCE SUGGESTS CLEARING SKIES AND THE 850 HPA
0 DEGREE ISOTHERM WILL BE SOUTH OF THE CWA BY 12Z
SUNDAY...THEREFORE HAVE TEMPS IN OUTLYING AREAS IN THE 30S AND
TEMPS AROUND 40 DOWNTOWN. AREAS PRONE TO SLIGHTLY COLDER TEMPS
LIKE AURORA AND ROCHELLE MAY DIP BELOW FREEZING. EXPECTING FROST
TO DEVELOP ALONG AND NORTH OF THE I-80 AND OUTSIDE OF THE CHICAGO
METRO AREA. WILL HOLD OFF ON ANY FROST RELATED HEADLINES NOW SINCE
NOT SURE HOW MUCH OF THE CWA IS STILL GROWING OR SENSITIVE TO
FROST GIVEN THIS SUMMERS DROUGHT. NOT TO MENTION SOIL TEMPS ARE
STILL RELATIVELY WARM FOR THIS TIME OF YEAR...WHICH MAY RESULT IN
FROST DEVELOPING ON ELEVATED SURFACES SUCH AS
ROOFS...VEHICLES...AND HANGING PLANTS.

SUNDAY THROUGH TUESDAY...
HIGH PRESSURE MOVES IN SUNDAY AND BY MONDAY SOUTHWEST WINDS RETURN.
TEMPS SLOWLY WARM WITH SUNDAY NIGHT LOOKING LIKE ANOTHER NIGHT IN
THE UPPER 30S IN OUTLYING AREAS.  HIGH TEMPS ON MONDAY WILL BE BELOW
AVERAGE BUT IN THE MID 60S.

A SURFACE LOW FORMS OVER THE MID MISSISSIPPI RIVER VALLEY TUESDAY
AFTERNOON WITH A CHANCE OF SHRA ACROSS MOST OF THE CWA TUESDAY AND
TUESDAY NIGHT.  MODEL SOUNDINGS DO NOT LOOK FAVORABLE FOR CONVECTION
AT THIS TIME. TUESDAY LOOKS LIKE THE WARMEST DAY WITH NEAR NORMAL
TEMPS IN THE 70S.

WEDNESDAY AND THURSDAY...
THE UPPER LEVEL TROUGH BEGINS TO SINK SOUTH INTO WISCONSIN TUESDAY
NIGHT INTO WEDNESDAY.  A COLD FRONT PASSES SOUTH THROUGH THE CWA ON
WEDNESDAY RESULTING IN A CHANCE OF SHOWERS. THERE IS NOT A SIGNIFICANT
PUSH OF COOL AIR BEHIND THE FRONT...THEREFORE TEMPS FOR LATE NEXT
WEEK LOOK ONLY SLIGHTLY BELOW NORMAL.

JEE

&&

.AVIATION...

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

* VARIABLE WIND DIRECTIONS/SPEEDS THROUGH THE EVENING RUSH.

* OFF AND ON SHOWERS WITH POSSIBLE PERIODS OF LOWER CIGS/VSBYS.

LENNING

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

AN ACTIVE WEATHER PATTERN OVER THE NEXT 36 HOURS WILL BRING
MULTIPLE CONCERNS TO THOSE WITH AVIATION INTERESTS. A PAIR OF
UPPER LEVEL DISTURBANCES ARE MOVING OVER THE AREA THIS
AFTERNOON...AND BOTH IN TANDEM ARE HELPING TO BRING RAIN TO THE
AREA. WHILE THIS WAS MORE SHOWERY EARLIER...THIS IS LIKELY TO BE A
MORE PERSISTENT RAIN AT TAF SITES THIS AFTERNOON...ESPECIALLY
RFD...DPA...AND ORD. TEMPORARY MVFR VISIBILITIES HAVE BEEN SEEN
ACROSS SOUTHWEST WI WITHIN THE RAIN AREA...AND GIVEN THE MID-LEVEL
FORCING AND JUST OVERALL IMPRESSIVE DYNAMICS...WOULD NOT BE
SURPRISED TO SEE SOME OF THAT AND MAYBE EVEN BRIEF MVFR CIGS. A
SURFACE REFLECTION TO THE UPPER LEVEL WAVES WILL BE DEFINED IN A
LOW PRESSURE ACROSS WESTERN IL BY MID TO LATE AFTERNOON. THIS WILL
HELP TO EVOLVE THE WIND FIELD INTO MORE NORTHERLY ACROSS MOST OF
THE TAF SITES THAN ORIGINALLY THOUGHT...AND POTENTIALLY EVEN
NORTHEASTERLY BY LATE AFTERNOON AND EARLY EVENING. WIND SPEEDS
WILL LIKELY BE UNDER 10 KT DURING THAT PERIOD...THOUGH THEY MAY BE
CLOSE. SPEEDS WILL DROP TONIGHT AND THE DIRECTION SHOULD AGAIN
BECOME VARIABLE. ANOTHER VIGOROUS UPPER LEVEL DISTURBANCE WILL
MOVE OVER THE AREA SATURDAY MORNING LIKELY CREATING SHOWERS BUT IN
PARTICULAR BRINGING A SURGE OF STRONGER NORTHWEST WINDS AND COLDER
AIR. THIS WILL SET THE STAGE FOR WIND GUSTS IN THE 25-30 KT
BALLPARK FROM MID TO LATE MORNING SATURDAY INTO THE AFTERNOON. IN
ADDITION...COLD AIR ADVECTION STRATOCUMULUS WILL LIKELY BE MVFR
IMMEDIATELY BEHIND THE COLD FRONT SATURDAY MORNING AND GRADUALLY
RAISE THROUGH THE DAY.

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

* MEDIUM CONFIDENCE REGARDING WINDS. EXPECT THEY WILL PROMPT SOME
  REFUSALS FROM TIME TO TIME NO MATTER WHICH CONFIGURATION IS
  USED. LATEST TRENDS SUGGEST THEY WOULD BE NORTHEASTERLY FOR A
  WHILE THIS AFTERNOON...BUT STILL SOUTHWESTERLY JUST A COUPLE
  THOUSAND FEET UP.

* MEDIUM TO HIGH CONFIDENCE OF STAYING ABOVE MVFR EXCEPT FOR BRIEF
  PERIODS. NOT ANTICIPATING IFR THIS EVENING.

LENNING

//OUTLOOK FOR ORD/MDW FOR 00Z SUNDAY-12Z FRIDAY...UPDATED 12Z...

* SATURDAY NIGHT THROUGH MONDAY...VFR.
* TUESDAY...CHANCE OF SHOWERS.
* WEDNESDAY...CHANCE OF THUNDERSTORMS SOUTH...OTHERWISE VFR.
* THURSDAY...VFR

MTF

&&

.MARINE...
230 PM CDT

LOW PRESSURE OVER THE UPPER GREAT LAKES WILL TRACK NORTHEAST
TOWARD HUDSON BAY OVERNIGHT TONIGHT AND THEN RAPIDLY DEEPEN
TOMORROW AS STRONG HIGH PRESSURE BUILDS ACROSS THE NORTHERN
PLAINS. A SERIES OF MID LEVEL IMPULSES WILL BRING REINFORCING
SHOTS OF COLD AIR OVER THE WESTERN GREAT LAKES TOMORROW. THE
RESULTANT STRONG COLD ADVECTION WILL LEAD TO RAPIDLY STRENGTHENING
NORTHERLY WINDS TOMORROW...LIKELY REACHING GALE FORCE DURING THE
AFTERNOON HOURS. THE PRESSURE GRADIENT AND COLD ADVECTION WILL BE
STRONGEST OVER THE FAR NORTHERN PORTIONS OF THE LAKE...SO HAVE
HOISTED A GALE WARNING FOR THE NORTHERN ONE-THIRD OF THE LAKE. THE
WINDOW OF OPPORTUNITY FOR THE STRONGEST WINDS WILL BE DURING THE
AFTERNOON AND EVENING HOURS WHEN HIGH PRESSURE SPREADING INTO THE
WESTERN GREAT LAKES SHOULD HELP ALLOW WINDS TO SUBSIDE BELOW GALE
FORCE. FOR THE SOUTHERN PORTIONS OF THE LAKE...WINDS AND WAVES
SHOULD QUICKLY RISE TO SMALL CRAFT ADVISORY LEVELS TOMORROW AS
WELL...WITH THE INDIANA WATERS REACHING SMALL CRAFT ADVISORY
LEVELS SOONER THAN THE ILLINOIS WATERS...AND LINGERING
LONGER...INTO MONDAY MORNING DUE TO THE GENERALLY NORTHERLY FETCH
SETTING UP OVER THE LAKE. BY MONDAY AFTERNOON...ANOTHER DEEPENING
LOW TRACKING JUST NORTH OF THE GREAT LAKES MAY POSSIBLY BRING
ANOTHER BRIEF PERIOD OF SOUTHWESTERLY GALES TO THE FAR NORTHERN
PORTION OF THE LAKE...BUT WILL NOT ISSUE ANY HEADLINES AT THIS
TIME SINCE THE STRENGTH OF THE WINDS WILL BE HIGHLY DEPENDENT ON
THE EXACT TRACK OF THE LOW.

THE OTHER CONCERN FOR LAKE MICHIGAN WILL BE WATERSPOUT POTENTIAL.
LAKE SFC WATER TEMPERATURES REMAIN UNUSUALLY HIGH...WITH A
TEMPERATURE OF 17C AT THE NORTH BUOY AND 20C AT THE SOUTH BUOY
THIS AFTERNOON. WHEN THE MUCH COOLER AIR PLUNGES OVER LAKE
MICHIGAN...LAKE SFC TO 850MB DELTA-T VALUES WILL REACH AS HIGH AS
22-23C...INDICATIVE OF A VERY UNSTABLE ENVIRONMENT OVER LAKE
MICHIGAN. WHILE CONVERGENCE BOUNDARIES ARE NOT LIKELY OVER THE
LAKE...WATERSPOUT POTENTIAL WILL REMAIN HIGH DUE TO LAKE EFFECT
RAIN SHOWERS AND DEEP LAYER CONVECTIVE CLOUD DEVELOPMENT.
CONDITIONS WILL BE CONDUCIVE TO WATERSPOUTS FROM THIS EVENING
THROUGH MONDAY EVENING...ESPECIALLY FOR THE NORTHERN AND EASTERN
PORTIONS OF THE LAKE.

KREIN

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...NONE.
IN...HIGH RIP CURRENT RISK...INZ001-INZ002...10 AM SATURDAY TO 10 AM
     MONDAY.

LM...GALE WARNING...LMZ261-LMZ362-LMZ364-LMZ563...2 PM SATURDAY TO 11
     PM SATURDAY.

     SMALL CRAFT ADVISORY...LMZ740-LMZ741-LMZ742-LMZ743...4 PM
     SATURDAY TO MIDNIGHT MONDAY.

     SMALL CRAFT ADVISORY...LMZ744-LMZ745...10 AM SATURDAY TO 10 AM
     MONDAY.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1157 AM CDT FRI SEP 21 2012

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
221030-
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-
1157 AM CDT FRI SEP 21 2012 /1257 PM EDT FRI SEP 21 2012/

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

  WEATHER HAZARDS EXPECTED:

  THUNDERSTORMS...A FEW COULD BE SEVERE WITH LARGE HAIL...STRONG
  WINDS...AND POSSIBLY A TORNADO.

  AREAS AFFECTED AND TIMING:

  PRIMARILY ALONG AND SOUTH OF U.S. HIGHWAY 24 BETWEEN 3 AND 9 PM.

  DISCUSSION:

  A STRONG UPPER LEVEL WAVE IS DIGGING SOUTH ACROSS THE UPPER
  MISSISSIPPI VALLEY THIS AFTERNOON WITH LOW PRESSURE QUICKLY
  DEVELOPING INTO WESTERN ILLINOIS IN RESPONSE. SOUTHERLY FLOW
  AHEAD OF THIS LOW WILL STRENGTHEN IN THE LOWER ATMOSPHERE AND
  HELP TO STEER INSTABILITY BACK INTO EASTERN ILLINOIS AND
  NORTHWEST INDIANA...INCLUDING AREAS SOUTH AND SOUTHEAST OF THE
  CHICAGO METROPOLITAN AREA. IF ENOUGH DESTABILIZATION CAN
  OCCUR...WIND FIELDS WILL BE SUPPORTIVE OF SCATTERED STRONG TO
  POSSIBLY SEVERE STORMS...A FEW OF WHICH COULD BE SUPERCELLS. THE
  ISOLATED TORNADO THREAT WOULD BE WITH THESE STORMS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

AREAS OF FROST ARE LIKELY FROM WEST OF INTERSTATE 355 AND NORTH
OF A LINE CONNECTING OTTAWA TO MORRIS DURING OVERNIGHT SATURDAY
AND EARLY SUNDAY MORNING...WITH LOCALIZED TEMPERATURES AROUND
FREEZING POSSIBLE.

THERE IS A SLIGHT CHANCE OF THUNDERSTORMS ALONG AND SOUTH OF THE
INTERSTATE 80 CORRIDOR WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS MAY BE NEEDED LATER THIS AFTERNOON...MAINLY ALONG AND
SOUTH OF U.S. HIGHWAY 24.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

LMZ740>745-221030-
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-
1157 AM CDT FRI SEP 21 2012

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.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

STRONG WINDS AND HIGH WAVES COULD LEAD TO HAZARDOUS CONDITIONS
FOR SMALL CRAFT SATURDAY INTO SUNDAY EVENING. GALE FORCE GUSTS
ARE ALSO POSSIBLE.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-221030-
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-
1157 AM CDT FRI SEP 21 2012

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THERE IS A CHANCE OF WATERSPOUTS ACROSS THE EASTERN HALF OF THE
LAKE.

THERE IS CHANCE OF THUNDERSTORMS ACROSS THE NORTHERN HALF OF THE
LAKE THIS AFTERNOON.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THERE IS A CHANCE OF WATERSPOUTS ACROSS THE EASTERN HALF OF THE
LAKE FROM SATURDAY MORNING THROUGH LATE SUNDAY AFTERNOON.

GALE FORCE WINDS ARE POSSIBLE SATURDAY AND SATURDAY NIGHT MAINLY
ON THE SOUTHERN HALF OF THE LAKE.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

MTF