Small Craft Advisory 35, NWS Grand Rapids, MI

306 
WHUS73 KGRR 240822
MWWGRR

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
422 AM EDT TUE APR 24 2012

LMZ847>849-241600-
/O.EXT.KGRR.SC.Y.0035.000000T0000Z-120424T1600Z/
GRAND HAVEN TO WHITEHALL MI-WHITEHALL TO PENTWATER MI-
PENTWATER TO MANISTEE MI-
422 AM EDT TUE APR 24 2012

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL NOON EDT TODAY...

* WINDS...NORTHWEST 15 TO 25 KNOTS TODAY.

* WAVES...3 TO 5 FEET SUBSIDING TO 2 TO 3 FEET LATE IN THE DAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

LMZ844>846-241630-
/O.EXT.KGRR.SC.Y.0035.000000T0000Z-120424T2300Z/
ST JOSEPH TO SOUTH HAVEN MI-SOUTH HAVEN TO HOLLAND MI-
HOLLAND TO GRAND HAVEN MI-
422 AM EDT TUE APR 24 2012

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 7 PM EDT THIS
EVENING...

* WINDS...WEST 15 TO 25 KNOTS TODAY...BECOMING SOUTHWEST 5 TO 15
  KNOTS THIS EVENING.

* WAVES...3 TO 5 FEET TODAY SUBSIDING TO 1 TO 2 FEET TONIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

JK

996 
WHUS73 KGRR 241602
MWWGRR

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1202 PM EDT TUE APR 24 2012

LMZ847>849-241715-
/O.EXP.KGRR.SC.Y.0035.000000T0000Z-120424T1600Z/
GRAND HAVEN TO WHITEHALL MI-WHITEHALL TO PENTWATER MI-
PENTWATER TO MANISTEE MI-
1202 PM EDT TUE APR 24 2012

...SMALL CRAFT ADVISORY HAS EXPIRED...

WINDS AND WAVES WILL CONTINUE TO GRADUALLY SUBSIDE THIS AFTERNOON
AND EVENING.

$$

LMZ844>846-242300-
/O.CON.KGRR.SC.Y.0035.000000T0000Z-120424T2300Z/
ST JOSEPH TO SOUTH HAVEN MI-SOUTH HAVEN TO HOLLAND MI-
HOLLAND TO GRAND HAVEN MI-
1202 PM EDT TUE APR 24 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EDT THIS
EVENING...

* WINDS...NORTHWEST 15 TO 25 KNOTS TODAY...BECOMING SOUTHWEST 5 TO
  15 KNOTS THIS EVENING.

* WAVES...3 TO 5 FEET TODAY SUBSIDING TO 1 TO 2 FEET TONIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

745 
WHUS73 KGRR 242009
MWWGRR

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
409 PM EDT TUE APR 24 2012

LMZ844>846-242300-
/O.CON.KGRR.SC.Y.0035.000000T0000Z-120424T2300Z/
ST JOSEPH TO SOUTH HAVEN MI-SOUTH HAVEN TO HOLLAND MI-
HOLLAND TO GRAND HAVEN MI-
409 PM EDT TUE APR 24 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EDT THIS
EVENING...

* WINDS...NORTHWEST 5 TO 15 KNOTS...BECOMING VARIABLE UNDER 10
  KNOTS TONIGHT.

* WAVES...2 TO 4 FEET SUBSIDING TO AROUND ONE FOOT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1051 PM EDT MON APR 23 2012

.SYNOPSIS...
ISSUED AT 359 PM EDT MON APR 23 2012

BRISK NORTH WINDS RELATED TO A SLOW MOVING STRONG LOW PRESSURE
SYSTEM OVER NEW YORK STATE WILL CONTINUE TONIGHT AND TUESDAY. THE
FIRE DANGER WILL BE ELEVATED THROUGH TUESDAY AS THE STRONG WINDS
COMBINE WITH VERY DRY CONDITIONS.

WINDS WILL BE MUCH LIGHTER AND WEDNESDAY AND IT WILL BE WARMER...
BUT A CHANCE OF RAIN WILL DEVELOP. MORE COOL WEATHER IS EXPECTED
FOR THE END OF THE WEEK AND THE WEEKEND.

&&

.SHORT TERM...(THIS EVENING THROUGH TUESDAY NIGHT)
ISSUED AT 359 PM EDT MON APR 23 2012

STRONGER WINDS TONIGHT OUGHT TO MITIGATE THE THREAT OF A
SIGNIFICANT FREEZE/FROST EVENT... SO WILL NOT ISSUE ANY
HEADLINES. WIND GUSTS HAVE REMAINED BELOW ADVISORY CRITERIA BUT
GUSTS TO 35-40 MPH WILL STILL BE POSSIBLE THROUGH EARLY EVENING.

TUESDAY WILL BE FAIRLY SIMILAR TO MONDAY... WITH STRONG AND GUSTY
NORTH WINDS COMBINING WITH RELATIVE HUMIDITIES BELOW 35 PERCENT TO
CREATE AN ELEVATED FIRE DANGER. TEMPERATURES WILL REMAIN COOL WITH
HIGHS IN THE 50S. AS WINDS DIMINISH ON TUESDAY NIGHT... ANOTHER
FROST THREAT MAY DEVELOP.

.LONG TERM...(WEDNESDAY THROUGH MONDAY)
ISSUED AT 359 PM EDT MON APR 23 2012

MAIN LONG TERM CONCERNS IN THIS FCST PACKAGE WILL BE PCPN TRENDS FOR
THE BEGINNING PERIOD AND THIS WEEKEND...ALONG WITH SOME POSSIBLE
P-TYPE ISSUES THIS WEEKEND.

WED...AND ESPECIALLY WED NIGHT ARE LOOKING BETTER AND BETTER FOR
RAIN SHOWERS ACROSS THE AREA. THE MODELS CONTINUE TO BRING IN A
DECENT SHORT WAVE FROM THE NW...WHICH WILL PHASE WITH A WEAKENING
SRN STREAM SYSTEM. THIS PHASING WILL ALLOW FOR A DECENT PLUME OF
GULF MOISTURE TO INTERACT WITH THE NRN STREAM WAVE OVER THE AREA. WE
ARE NOT LOOKING AT SIGNIFICANT RAINS WITH THIS SYSTEM...BUT IT
POTENTIALLY LOOKS TO BE A WIDESPREAD LIGHT RAIN EVENT. SUFFICIENT
INSTABILITY FOR THUNDER LOOKS LIKE IT SHOULD REMAIN JUST SOUTH OF
THE STATE...CLOSER TO THE TRUE WARM SECTOR.

WE WILL SEE THE MAIN SHORT WAVE PASS THE AREA EITHER VERY LATE WED
NIGHT OR EARLY THU. THIS SHOULD CUT THE PCPN OFF EITHER WAY BY THU
AFTERNOON. WE WILL SEE CONFLUENT FLOW ALOFT BUILD IN THU
AFTERNOON...LEADING TO SFC RIDGING OVERHEAD. THIS WILL KEEP THE
WEATHER DRY THROUGH THE DAY ON FRI WITH COOL TEMPS IN THE 50S.

KIND OF A COMPLEX SCENARIO SHAPING UP FOR THE WEEKEND FOR THE
REGION. WE WILL SEE THE UPPER LOW CURRENTLY OFF THE COAST OF CA LIFT
TO THE NE AS A MORE DOMINANT UPPER LOW IN THE GULF OF ALASKA DIVES
SOUTH AND KICKS IT OUT. IT WILL MAKE A RUN AT THE AREA...AND ADVECT
MOIST AIR UP AND OVER A FRONTAL SYSTEM TO OUR SOUTH. THIS SYSTEM
WILL EVENTUALLY SLOW DOWN AS THE WINTER-LIKE POLAR VORTEX EXPECTED
OVER ERN CANADA WILL HOLD ITS GROUND.

RIGHT NOW THE MODELS ARE IN AGREEMENT IN HAVING THE FRONT STALL OUT
TO OUR SOUTH...AND HAVE THE WARM AND MOIST AIR OVERRUNNING THE AREA
ALOFT. TAKING THE MODELS VERBATIM RIGHT NOW WOULD BRING A COLD RAIN
TO THE AREA FOR A GOOD PORTION OF THE WEEKEND. THE GFS WOULD CHANGE
PCPN OVER TO SNOW SAT NIGHT AND SUN AND BRING POTENTIAL ACCUMULATING
SNOW TO THE AREA. THE EURO IS A BIT WARMER...AND WOULD SUPPORT SOME
SNOW MIXING IN LATE SAT NIGHT AND EARLY SUN. WE WILL LEAN TOWARD THE
EURO AND GEM...AND INTRODUCE A MIX FOR SAT NIGHT AND SUN.

THE POSITION OF THE FRONT AND WHO WILL SEE RAIN AND/OR SNOW ALL
DEPENDS ON WHEN THE FRONT GETS STOPPED BY THE CANADIAN LOW. THE
MODELS ARE SURE TO FLUCTUATE IN THEIR SOLUTIONS WITH THE UNCERTAINTY
OF THE SHORT WAVES WITH THE UPPER LOW AND UNTIL THE CA LOW COMES
ONSHORE INTO THE RAOB NETWORK. MODELS DO AGREE FOR NOW IN TAKING ALL
PCPN OUT BY MON...AND LEAVING A DRY AND COOL FCST.

&&

.AVIATION...(FOR THE 00Z TAFS THROUGH 00Z TUESDAY EVENING)
ISSUED AT 636 PM EDT MON APR 23 2012

THE PRIMARY ISSUE FOR THROUGH TUESDAY AFTERNOON IS THE STRENGTH OF
THE WIND. SKIES WILL FOR THE MOST PART BE CLEAR THROUGH TUESDAY
AFTERNOON.

CURRENTLY WINDS ARE NORTH NORTHWEST AT 20 KNOTS GUSTING TO NEAR 30
KNOTS...ONCE THE SUN SETS THE BOUNDARY LAYER WILL DECOUPLE AND
THAT WILL ALLOW THE SURFACE WIND... JUST LIKE LAST NIGHT TO
DIMINISH TO AROUND 10 KNOTS. MEANWHILE ABOVE THE BOUNDARY LAYER
WINDS WILL BE NORTH NORTHWEST AROUND 40 KNOTS. SEEMS TO ME THERE
WOULD BE SHEAR JUST BELOW 2000 FT AGL AS A RESULT OF THIS. SO I
DID ADD LOW LEVEL WIND SHEAR TO ALL THE TAFS.

ON TUESDAY ONCE THE SUN COMES UP... THE BOUNDARY LAYER WILL MIX
OUT AND WINDS WILL ONCE AGAIN BE AROUND 20 KNOTS WITH GUSTS TO
NEAR 30 FROM THE NORTH NORTHWEST.

&&

.MARINE...
ISSUED AT 1051 PM EDT MON APR 23 2012

WILL CANCEL THE GALE WARNING. WINDS OVER THE PAST 3 HOURS HAVE
REMAINDER UNDER 26 KTS AT ALL NEAR SHORE SITES. EXPECT THE
STRONGEST WINDS ON TUESDAY TO BE OVER LAND. SO HAVE REPLACED THE
GALES WITH A SCA THROUGH THE DAY TUESDAY.

&&

.FIRE WEATHER...
ISSUED AT 359 PM EDT MON APR 23 2012

FIRE DANGER WILL REMAIN ELEVATED THROUGH THE EARLY EVENING ACROSS
THE ENTIRE AREA DUE TO THE LOW HUMIDITIES AND STRONG WINDS. WE WILL
SEE SOME RECOVERY OF HUMIDITIES...HOWEVER SOME WIND REMAINING UP
WILL LIMIT HUMIDITY RECOVERY.

FIRE DANGER WILL ONCE AGAIN BE ELEVATED DURING THE DAY ON TUESDAY.
MODELS ARE INDICATING DEW POINTS SLIGHTLY HIGHER ON TUE...HOWEVER
THEY ARE LIKELY A LITTLE TOO MOIST WITH THIS TYPE OF PATTERN.
TEMPERATURES WILL BE ALSO A LITTLE WARMER...SO HUMIDITIES SHOULD BE
IN THE BALLPARK OF TODAY/S VALUES IF NOT SLIGHTLY LOWER. WINDS WILL
ALSO BE SIMILAR TO THIS AFTERNOON WITH GUSTS AROUND 30-35 MPH LIKELY
BY AFTERNOON.

&&

.HYDROLOGY...
ISSUED AT 359 PM EDT MON APR 23 2012

THERE ARE NO HYDRO CONCERNS.

&&

.GRR WATCHES/WARNINGS/ADVISORIES...
MI...NONE.
LM...SMALL CRAFT ADVISORY UNTIL 5 PM EDT TUESDAY FOR LMZ844>849.

&&

SYNOPSIS...MEADE
SHORT TERM...MEADE
LONG TERM...NJJ
AVIATION...WDM
FIRE WEATHER...NJJ
HYDROLOGY...MEADE
MARINE...JK

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
400 PM EDT MON APR 23 2012

MIZ037>040-043>046-050>052-056>059-064>067-071>074-240915-
MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON-
MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON-
INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON-
400 PM EDT MON APR 23 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER
MICHIGAN.

.DAY ONE...THIS EVENING AND TONIGHT

FIRE DANGER WILL BE ELEVATED ACROSS THE ENTIRE AREA THROUGH EARLY
THIS EVENING WITH VERY DRY AIR IN PLACE AND WITH WIND GUSTS TO 35
MPH EXPECTED.

SOME OF THE NORMAL LOCALLY COLDER LOCATIONS UP NORTH MAY SEE
TEMPERATURES BRIEFLY DIP TO AROUND...OR SLIGHTLY BELOW FREEZING FOR
A BRIEF PERIOD TOWARD DAYBREAK TUESDAY.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

LMZ844>849-240915-
ST JOSEPH TO SOUTH HAVEN MI-SOUTH HAVEN TO HOLLAND MI-
HOLLAND TO GRAND HAVEN MI-GRAND HAVEN TO WHITEHALL MI-
WHITEHALL TO PENTWATER MI-PENTWATER TO MANISTEE MI-
400 PM EDT MON APR 23 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER
MICHIGAN.

.DAY ONE...THIS EVENING AND TONIGHT

GALE WARNINGS ARE POSTED FOR ALL OF THE NEARSHORE WATERS THROUGH
TONIGHT.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

GALE WARNINGS WILL REMAIN IN PLACE FOR ALL OF THE NEARSHORE WATERS
THROUGH THE DAY ON TUESDAY.

OSTUNO NJJ