Small Craft Advisory 33, NWS Green Bay, WI

743 
WHUS73 KGRB 252122
MWWGRB

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREEN BAY WI
422 PM CDT WED APR 25 2012

...GUSTY WINDS EXPECTED THURSDAY...

.A TIGHT PRESSURE GRADIENT OVER THE GREAT LAKE REGION WILL
GENERATE GUSTY NORTH WINDS AND BUILDING WAVES FOR THURSDAY.

LMZ521-522-541>543-260530-
/O.NEW.KGRB.SC.Y.0033.120426T1400Z-120427T0200Z/
THE BAY OF GREEN BAY SOUTH OF LINE FROM CEDAR RIVER MI TO ROCK
ISLAND PASSAGE AND NORTH OF A LINE FROM OCONTO WI TO LITTLE
STURGEON BAY WI-
THE BAY OF GREEN BAY SOUTH OF LINE FROM OCONTO WI TO LITTLE
STURGEON BAY WI-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY WI TO TWO RIVERS WI-
LAKE MICHIGAN FROM TWO RIVERS WI TO SHEBOYGAN WI-
422 PM CDT WED APR 25 2012

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM TO 9 PM CDT
THURSDAY...

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A SMALL
CRAFT ADVISORY...WHICH IS IN EFFECT FROM 9 AM TO 9 PM CDT
THURSDAY. 

* WINDS...NORTH WINDS OF 15 TO 25 KTS ARE EXPECTED...WITH HIGHER
  GUSTS.|

* WAVES...WAVES WILL BUILD TO 2 TO 4 FT ON THE BAY...TO 3 TO 5 FT
  OVER THE LAKE.|

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OVER 20 KNOTS OR
WAVES GREATER THAN 4 FEET ARE EXPECTED TO PRODUCE HAZARDOUS
CONDITIONS TO SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY
THOSE OPERATING SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE
CONDITIONS.

&&

$$

922 
WHUS73 KGRB 260219
MWWGRB

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREEN BAY WI
919 PM CDT WED APR 25 2012

...GUSTY WINDS EXPECTED THURSDAY...

.A TIGHT PRESSURE GRADIENT OVER THE GREAT LAKE REGION WILL
GENERATE GUSTY NORTH WINDS AND BUILDING WAVES FOR THURSDAY.

LMZ521-522-541>543-261030-
/O.CON.KGRB.SC.Y.0033.120426T1400Z-120427T0200Z/
THE BAY OF GREEN BAY SOUTH OF LINE FROM CEDAR RIVER MI TO ROCK
ISLAND PASSAGE AND NORTH OF A LINE FROM OCONTO WI TO LITTLE
STURGEON BAY WI-
THE BAY OF GREEN BAY SOUTH OF LINE FROM OCONTO WI TO LITTLE
STURGEON BAY WI-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY WI TO TWO RIVERS WI-
LAKE MICHIGAN FROM TWO RIVERS WI TO SHEBOYGAN WI-
919 PM CDT WED APR 25 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM TO 9 PM CDT
THURSDAY...

* WINDS...NORTH WINDS OF 15 TO 25 KTS ARE EXPECTED...WITH HIGHER 
  GUSTS.| 

* WAVES...WAVES WILL BUILD TO 2 TO 4 FT ON THE BAY...TO 3 TO 5 
  FT OVER THE LAKE.| 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OVER 20 KNOTS OR
WAVES GREATER THAN 4 FEET ARE EXPECTED TO PRODUCE HAZARDOUS
CONDITIONS TO SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY
THOSE OPERATING SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE
CONDITIONS.

&&

$$

792 
WHUS73 KGRB 261025
MWWGRB

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREEN BAY WI
525 AM CDT THU APR 26 2012

...GUSTY WINDS EXPECTED TODAY...

.A TIGHT PRESSURE GRADIENT OVER THE GREAT LAKE REGION WILL
GENERATE GUSTY NORTH WINDS AND BUILDING WAVES TODAY.

LMZ521-522-541>543-261830-
/O.EXT.KGRB.SC.Y.0033.120426T1200Z-120427T0200Z/
THE BAY OF GREEN BAY SOUTH OF LINE FROM CEDAR RIVER MI TO ROCK
ISLAND PASSAGE AND NORTH OF A LINE FROM OCONTO WI TO LITTLE
STURGEON BAY WI-
THE BAY OF GREEN BAY SOUTH OF LINE FROM OCONTO WI TO LITTLE
STURGEON BAY WI-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY WI TO TWO RIVERS WI-
LAKE MICHIGAN FROM TWO RIVERS WI TO SHEBOYGAN WI-
525 AM CDT THU APR 26 2012

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 PM CDT THIS
EVENING...

* NORTH WINDS OF 15 TO 25 KTS...WITH HIGHER GUSTS TO 34 KTS ARE EXPECTED.

* WAVES WILL BUILD TO 3 TO 6 FT ON THE BAY...TO 4 TO 7 FT OVER THE
  LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OVER 20 KNOTS OR
WAVES GREATER THAN 4 FEET ARE EXPECTED TO PRODUCE HAZARDOUS
CONDITIONS TO SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY
THOSE OPERATING SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE
CONDITIONS.

&&

$$

396 
WHUS73 KGRB 261504
MWWGRB

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREEN BAY WI
1004 AM CDT THU APR 26 2012

...GUSTY NORTHERLY WINDS EXPECTED THROUGH THE AFTERNOON...

.A TIGHT PRESSURE GRADIENT OVER THE GREAT LAKES REGION WILL GENERATE
GUSTY NORTH WINDS AND HIGH WAVES THROUGH THE AFTERNOON.

LMZ521-522-541>543-262315-
/O.CON.KGRB.SC.Y.0033.000000T0000Z-120427T0200Z/
THE BAY OF GREEN BAY SOUTH OF LINE FROM CEDAR RIVER MI TO ROCK
ISLAND PASSAGE AND NORTH OF A LINE FROM OCONTO WI TO LITTLE
STURGEON BAY WI-
THE BAY OF GREEN BAY SOUTH OF LINE FROM OCONTO WI TO LITTLE
STURGEON BAY WI-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY WI TO TWO RIVERS WI-
LAKE MICHIGAN FROM TWO RIVERS WI TO SHEBOYGAN WI-
1004 AM CDT THU APR 26 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING...

* NORTH WINDS OF 15 TO 25 KTS...WITH GUSTS TO AROUND 35 KTS ARE
  EXPECTED INTO THE AFTERNOON...DIMINISHING LATE. 

* WAVES WILL BUILD TO 4 TO 6 FT ON THE BAY...TO 4 TO 7 FT ON THE LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OVER 20 KNOTS OR WAVES
GREATER THAN 4 FEET ARE EXPECTED TO PRODUCE HAZARDOUS CONDITIONS TO
SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING
SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

398 
WHUS73 KGRB 262034
MWWGRB

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREEN BAY WI
334 PM CDT THU APR 26 2012

...GUSTY NORTHERLY WINDS EXPECTED THROUGH THIS EVENING...

.A TIGHT PRESSURE GRADIENT OVER THE GREAT LAKES REGION WILL
GENERATE GUSTY NORTH WINDS AND HIGH WAVES THROUGH THIS
EVENING...BEFORE SUBSIDING TONIGHT.

LMZ521-522-541>543-270200-
/O.CON.KGRB.SC.Y.0033.000000T0000Z-120427T0200Z/
THE BAY OF GREEN BAY SOUTH OF LINE FROM CEDAR RIVER MI TO ROCK
ISLAND PASSAGE AND NORTH OF A LINE FROM OCONTO WI TO LITTLE
STURGEON BAY WI-
THE BAY OF GREEN BAY SOUTH OF LINE FROM OCONTO WI TO LITTLE
STURGEON BAY WI-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY WI TO TWO RIVERS WI-
LAKE MICHIGAN FROM TWO RIVERS WI TO SHEBOYGAN WI-
334 PM CDT THU APR 26 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS
EVENING...

* NORTH WINDS OF 15 TO 25 KTS...WITH GUSTS TO AROUND 30 KTS
  EXPECTED THROUGH THIS EVENING...BEFORE DIMINISHING BY TONIGHT.

* WAVES OF 4 TO 7 FT...WILL EASE TO 2 TO 4 FT BY TONIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OVER 20 KNOTS OR
WAVES GREATER THAN 4 FEET ARE EXPECTED TO PRODUCE HAZARDOUS
CONDITIONS TO SMALL CRAFT. INEXPERIENCED MARINERS...ESPECIALLY
THOSE OPERATING SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE
CONDITIONS.

&&

$$

534 
WHUS73 KGRB 270147
MWWGRB

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREEN BAY WI
847 PM CDT THU APR 26 2012

...WINDS AND WAVES SUBSIDING...


LMZ521-522-541>543-270300-
/O.CAN.KGRB.SC.Y.0033.000000T0000Z-120427T0200Z/
THE BAY OF GREEN BAY SOUTH OF LINE FROM CEDAR RIVER MI TO ROCK
ISLAND PASSAGE AND NORTH OF A LINE FROM OCONTO WI TO LITTLE
STURGEON BAY WI-
THE BAY OF GREEN BAY SOUTH OF LINE FROM OCONTO WI TO LITTLE
STURGEON BAY WI-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY WI TO TWO RIVERS WI-
LAKE MICHIGAN FROM TWO RIVERS WI TO SHEBOYGAN WI-
847 PM CDT THU APR 26 2012

...SMALL CRAFT ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS CANCELLED THE SMALL
CRAFT ADVISORY. 


$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREEN BAY WI
237 PM CDT WED APR 25 2012

.SHORT TERM...TNGT AND THU. MAIN FCST ISSUES TO DEAL WITH INCLUDE:
TIMING OF PCPN'S DEMISE AND DEPTH OF DRY AIR TO PUSH INTO THE
REGION ON THU.

THE 19Z MSAS SFC ANALYSIS SHOWED AN AREA OF LOW PRES SITUATED OVER
CNTRL IA WITH AN INVERTED TROF EXTENDED NWD FROM THE LOW THRU
CNTRL MN. RADAR IMAGERY SHOWED AN AREA OF LIGHT RAIN/SPRINKLES
OVER MOST OF NE WI...HOWEVER AMOUNTS WERE MEAGER AS INITIAL DRY
AIR TOOK A WHILE TO OVERCOME. A CDFNT WAS SITUATED ACROSS CNTRL
SECTIONS OF ONTARIO MAKING A SOUTHWARD MOVEMENT.

THE SFC LOW WL TRACK EWD INTO OHIO TNGT...WHILE A SHORTWAVE TROF
PIVOTS SE THRU THE GREAT LKS REGION DURING THE OVRNGT HOURS. THE
CDFNT WL ACCOMPANY THIS UPR TROF THRU NE WI AND TURN THE WINDS TO
THE NORTH WITH SPEEDS STEADILY INCREASING TOWARD SUNRISE. HAVE
KEPT A POP ACROSS THE ENTIRE FCST AREA THIS EVENING (HIGHEST FAR
NORTH THRU E-CNTRL) AND THEN TAPERED POPS OFF FROM WEST TO EAST AS
HI PRES BEGINS TO BUILD SOUTHWARD FROM S-CNTRL CANADA. A PRETTY
GOOD SURGE OF COLDL AIR TO SPREAD INTO WI BEHIND THE CDFNT...
HOWEVER LINGERING CLOUDS/INCREASING WINDS PREVENT TEMPS FROM
FALLING TOO FAR TNGT. LOOK FOR MIN TEMPS TO RANGE FROM AROUND 30
N-CNTRL TO THE LWR 40S OVER THE FOX VALLEY.

UPR TROFS LOCATED OVER THE WEST COAST/SE CANADA WITH AN UPR RDG
OVER THE PLAINS WL LEAD TO A NW FLOW OVER WI ON THU. CAA/DRIER AIR
WL LEAD TO COOL TEMPS AND A BLUSTERY DAY OVER NE WI AS THE CORE OF
THE HI PRES TO STILL BE LOCATED WELL TO OUR NORTH. PLENTY OF
SUNSHINE EXPECTED WITH MAX TEMPS MAINLY IN THE UPR 40S TO LWR 50S.
THE DEPTH OF THE DRY AIR WL LOWER AFTERNOON RELATIVE HUMIDITY
VALUES INTO THE UPR 20S TO LWR 30S...SO WL NEED TO BE COGNIZANT OF
FIRE WEATHER CONDITIONS TOMORROW.

.LONG TERM...THURSDAY NIGHT THRU NEXT WEDNESDAY. MAIN CONCERNS ARE
FROST/FREEZE POTENTIAL...AND WHEN THE NEXT BEST CHANCE OF PRECIP
WILL OCCUR.

QUIET START TO THE LONG TERM PERIOD AS CANADIAN HIGH PRESSURE
EXTENDS SOUTH INTO THE AREA...AND UPPER RIDGING BUILDS OVER THE
REGION...BRINGING DRY WEATHER TO THE AREA THURSDAY NIGHT AND
FRIDAY. WITH CLEAR SKIES...LIGHT WINDS...AND DRY AIR...EXPECT
TEMPS TO FALL WELL INTO THE 20S ACROSS MOST OF CENTRAL AND NORTH-
CENTRAL WI. SOME LOCATIONS ACROSS FAR NORTHERN WI COULD EVEN DROP
INTO THE UPPER TEENS. PORTIONS OF THE FOX VALLEY COULD ALSO SEE
TEMPS DIPPING INTO THE UPPER 20S AS WELL. WILL ADD FROST MENTION
TO THE GRIDS...BUT HOLD OFF ON ANY HEADLINE. FOR LOCATIONS WHERE
FROST/FREEZE HEADLINES ARE SUSPENDED...NORTHERN WI...WILL NOT
MENTION ANY FROST. COOL SE FLOW ON FRIDAY WILL HOLD TEMPS IN THE
50S FOR MOST LOCATIONS...WITH SOME MID TO UPPER 40S NEAR THE LAKE.

FOCUS TURNS TO SURFACE LOW AND SHORTWAVE CROSSING THE CENTRAL
PLAINS. MODELS SHOW AN INITIAL SHORTWAVE MOVING INTO IOWA BY 12Z
SATURDAY...WHILE A STRONGER SHORTWAVE ASSOCIATED WITH AN UPPER LOW
SITS BACK OVER MONTANA. MAIN QUESTION WILL BE WHERE THIS FIRST
SHORTWAVE TRACKS...AND IF ANY PRECIP WILL MAKE IT INTO THE
FORECAST AREA. THE NE PUSH FROM THIS SYSTEM WILL BE FIGHTING THE
DRY CANADIAN HIGH...SO THE PRECIP WILL HAVE A HARD TIME ADVANCING
NORTHWARD. MAJORITY OF MODELS KEEP PRECIP JUST SOUTH OF THE
AREA...BUT IT WILL BE CLOSE CALL. GLANCING AT THE NEW ECMWF...IT
HAS TRENDED NORTH...BRINGING PRECIP ACROSS THE SOUTHERN CWA. THIS
WILL BE SOMETHING TO KEEP AN EYE ON...BUT WILL CONTINUE WITH A DRY
FORECAST FOR FRIDAY NIGHT AND SATURDAY...BETTING THE CANADIAN HIGH
WINS THIS FIGHT. TEMPS MODERATE SLIGHTLY ON FRIDAY NIGHT...BUT
SOME LOCATIONS COULD DIP BELOW 30 DEGREES ACROSS CENTRAL WI...WITH
MID/UPPER 20S ACROSS THE NORTH. HIGH TEMPS ON SATURDAY WILL REMAIN
IN THE 40S NEAR THE LAKE...AND IN THE LOWER TO MIDDLE 50S
ELSEWHERE.

AFTER THE CLOSE CALL ON PRECIP ON SATURDAY...SURFACE HIGH PRESSURE
RE-ESTABLISHES ITSELF OVER THE WESTERN GREAT LAKES AREA...BRINGING
DRY CONDITIONS. A WEAK SHORTWAVE IS SHOWN BY A FEW OF THE
MODELS...SPARKING OFF A FEW SHOWERS SUNDAY NIGHT...BUT WITH HIGH
PRESSURE AT THE SURFACE...PREFER TO KEEP THINGS DRY. THE HIGH
PRESSURE WILL PUSH TOWARD THE EASTERN SEABOARD BY TUESDAY...
ALLOWING AN UPPER SHORTWAVE AND SURFACE LOW TO TRACK INTO THE
NORTHERN PLAINS. THIS LOOKS TO BE THE NEXT BEST CHANCE FOR
WIDESPREAD RAIN ACROSS THE AREA. NOT MUCH INSTABILITY TO WORK
WITH...SO WILL REMOVE THUNDER WORDING. TEMPS WILL SLOWLY MODERATE
TOWARD NORMAL READINGS BY EARLY NEXT WEEK...WITH SOME 60S EXPECTED
BY MID-WEEK.
&&

.AVIATION...AN AREA OF LOW PRES WL MOVE FROM IA TO OH THIS
AFTERNOON INTO TNGT AND BRING AN AREA OF LIGHT RAIN TO NE WI THIS
AFTERNOON. AS THE LOW PRES BEGINS TO PULL FARTHER AWAY THIS
EVENING...LOOK FOR THE RAIN TO COME TO AN END. A CDFNT IS FCST TO
DROP THRU THE REGION LATER TNGT AND BRING A WIND SHIFT TO THE
NORTH WITH INCREASING SPEEDS HEADED INTO THU MORNING. IN GENERAL...
VFR CONDITIONS ARE EXPECTED OVER THE NXT 24 HOURS. HOWEVER...MVFR
VSBYS ARE PSBL THIS AFTERNOON WITH ANY HEAVIER SHWR ACTIVITY AND
AGAIN LATER TNGT AHEAD OF THE CDFNT.
&&

.MARINE...INCREASING NORTHERLY FLOW BEHIND THE CDFNT AND EXPECTED
INSTABILITY AS COLDER AIR MOVES ACROSS LAKE MI...WL BRING A PERIOD
OF SMALL CRAFT CONDITIONS TO THE BAY AND LAKE ON THU.
&&

.FIRE WEATHER...AN INFLUX OF DRY...CANADIAN AIR TO SETTLE OVER NE
WI STARTING ON THU...AND CONTINUING THROUGH THE MONDAY. AFTERNOON
RELATIVE HUMIDITIES COULD DROP INTO THE TEENS ACROSS NRN WI FRI
AND SAT...WITH 20S TO LOWER 30S ELSEWHERE.
&&

.GRB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

KALLAS/BERSCH

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREEN BAY WI
249 PM CDT WED APR 25 2012

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-262000-
VILAS-ONEIDA-FOREST-FLORENCE-NORTHERN MARINETTE-LINCOLN-LANGLADE-
MENOMINEE-NORTHERN OCONTO-DOOR-MARATHON-SHAWANO-WOOD-PORTAGE-
WAUPACA-OUTAGAMIE-BROWN-KEWAUNEE-WAUSHARA-WINNEBAGO-CALUMET-
MANITOWOC-SOUTHERN MARINETTE-SOUTHERN OCONTO-
249 PM CDT WED APR 25 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL AND NORTHEAST
WISCONSIN.

.DAY ONE...TONIGHT

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH WEDNESDAY

FREEZING TEMPERATURES ARE POSSIBLE AWAY FROM THE LAKESHORE EACH
NIGHT FROM THURSDAY NIGHT THROUGH SATURDAY NIGHT.

LOW RELATIVE HUMIDITY WILL BE POSSIBLE EACH AFTERNOON FROM FRIDAY
THROUGH SUNDAY...WHICH COULD LEAD TO AN ELEVATED FIRE DANGER.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TONIGHT.

LMZ521-522-541>543-262000-
THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK
ISLAND PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN-
249 PM CDT WED APR 25 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST LAKE
MICHIGAN AND THE WATERS OF GREEN BAY.

.DAY ONE...TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH WEDNESDAY

WINDS AND WAVES HAZARDOUS TO SMALL CRAFT ARE EXPECTED ON THURSDAY.

BERSCH/KALLAS