Small Craft Advisory 32, NWS Green Bay, WI

228 
WHUS73 KGRB 210220
MWWGRB

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREEN BAY WI
920 PM CDT FRI APR 20 2012

...GUSTY NORTH WINDS TO CONTINUE OVERNIGHT...

..A STRONG PRESSURE GRADIENT ON THE BACK SIDE OF DEPARTING LOW
PRESSURE WILL RESULT IN GUSTY WINDS THROUGH LATE TONIGHT...BEFORE
SUBSIDING LATE.

LMZ521-522-541>543-210900-
/O.CON.KGRB.SC.Y.0032.000000T0000Z-120421T0900Z/
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-
920 PM CDT FRI APR 20 2012

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT
SATURDAY...

* WINDS...NORTH WINDS OF 15 TO 25 KTS ARE EXPECTED...WILL SLOWLY 
  SUBSIDE OVERNIGHT. 

* WAVES...WAVES WILL EASE TO 2 TO 4 FT.

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.

&&

$$

986 
WHUS73 KGRB 210840
MWWGRB

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREEN BAY WI
340 AM CDT SAT APR 21 2012

...WINDS AND WAVES HAVE DIMINISHED...

.NORTHEAST WINDS DIMINISHED OVERNIGHT AND WAVES HAVE SUBSIDED AS WELL.

LMZ521-522-541>543-210945-
/O.CAN.KGRB.SC.Y.0032.000000T0000Z-120421T0900Z/
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-
340 AM CDT SAT APR 21 2012

...SMALL CRAFT ADVISORY IS CANCELLED...

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

WINDS AND WAVES HAVE DIMINISHED CONSIDERABLY OVERNIGHT.

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREEN BAY WI
304 PM CDT FRI APR 20 2012

.SHORT TERM...TONIGHT AND SATURDAY.

A NARROW SURFACE RIDGE IS EXPECTED TO MOVE INTO THE AREA TONIGHT
AS AN UPPER LEVEL SHORT WAVE PASSES TO OUR SOUTHEAST. CLOUDS
ASSOCIATED WITH LAST NIGHTS SYSTEM WERE DEPARTING THIS AFTERNOON.
SOME CU DEVELOPED...BUT EVEN SOME OF THAT WAS DISSIPATING AS OF
1945Z. THINK CLEAR OR MOSTLY CLEAR CONDITIONS SHOULD PREVAIL
OVERNIGHT WITH THE SURFACE RIDGE OVER WISCONSIN AND AN UPPER LEVEL
RIDGE TO THE WEST. EXPECT WINDS TO DIMINISH DURING THE NIGHT.
LIGHT OR CALM WINDS ACROSS CENTRAL AND NORTH CENTRAL WISCONSIN
WILL ALLOW TEMPERATURES TO DROP INTO THE 20S THERE. THINK THERE
WILL BE MORE WIND IN THE EAST SO EXPECT TEMPERATURES TO BOTTOM OUT
IN THE 30S THERE. IF WINDS DIE OFF IN THE EAST...THERE WILL
PROBABLY BE A HARD FREEZE WITH TEMPERATURES IN THE 20S.

CLOUDS WILL INCREASE ON SATURDAY AS A SHORT WAVE MOVES SOUTHEAST
AHEAD OF AN APPROACHING UPPER RIDGE. MOST OF THE MODELS HAD QPF
REMAINING WEST OF THE AREA THROUGH 00Z SUNDAY...12Z GFS AND 15Z
SREF HAD IT INTO THE WESTERN PART OF THE AREA. OPTED TO GO WITH
THE DRIER MODELS AND ONLY WENT WITH INCREASING CLOUDS.

.LONG TERM...SUNDAY THROUGH NEXT FRIDAY...

SUN THROUGH MON...UPPER TROF/CLOSED LOW TO SHIFT SLOWLY EAST OVER
THE REGION THIS PERIOD. MODEL CONSENSUS IS FOR INITIAL SFC SYSTEM
TO DROP SOUTH AND WEST OF AREA SAT NIGHT/SUN...WITH QPF JUST
BRUSHING WESTERN PORTION OF CWA. CYCLONIC FLOW LINGERING OVER AREA
THROUGH MON LEADS A LOT OF LIGHT QPF SCATTERED OVER THE WESTERN
LAKES...THOUGH LITTLE DYNAMICS TO SUPPORT. HAVE DECIDED TO GO WITH
DRY FORECAST SUN NIGHT INTO MON.

TUE THROUGH NEXT FRI...LOW CONFIDENCE IN FORECAST THIS
PERIOD...WITH LOT OF SPREAD SEEN IN ENSEMBLE UPPER PATTERN FROM
TUE ONWARD. MODEL RUN TO RUN CONSISTENCY ALSO LOW. SMALL CHANCE IN
THE WED/THU TIME PERIOD. MAIN CHANGE WAS TO BRING TEMPS
DOWN...RUNNING NEAR NORM THROUGH THE EXTENDED AS EASTERN TROF
LINGERS MORE OVER LAKES.
&&

.AVIATION...CIGS WERE MVFR GENERALLY SOUTHEAST OF A LINE FROM IMT
TO MFI AT 17Z. SATELLITE LOOPS SHOWED THE BACK EDGE OF THE MORE
SOLID CLOUD COVER MOVING SLOWLY TO THE SOUTHEAST. SOME CU
DEVELOPED BEHIND THE MAIN AREA OF CLOUDS WITH SOME CIGS IN THE 4000FT
TO 5000FT RANGE. EXPECT MVFR CIGS IN THE EAST AND SOUTH TO DEPART
THIS AFTERNOON. CU OVER THE AREA SHOULD DISSIPATE AROUND SUNSET AS
WINDS DECREASE WITH A WEAKENING SURFACE PRESSURE GRADIENT. EXPECT
WINDS LESS THAN 10 KTS OVERNIGHT WITH MAINLY CLEAR SKIES. WINDS
SHOULD INCREASE A BIT DURING THE MORNING AND SOME VFR CIGS WILL
PROBABLY DEVELOP DURING THE LATTER HALF OF THE MORNING.

MG
&&

.GRB WATCHES/WARNINGS/ADVISORIES...
FREEZE WARNING FROM 1 AM TO 8 AM CDT SATURDAY FOR WIZ020-030-031-
035>037-045.

&&

MG/TE

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREEN BAY WI
300 PM CDT FRI APR 20 2012

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-212000-
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-
300 PM CDT FRI APR 20 2012

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

.DAY ONE...TONIGHT

CLEAR SKIES TONIGHT WILL ALLOW TEMPERATURES TO FALL INTO THE 20S
AND LOW 30S. THIS WILL PRODUCE A FREEZE OVER MUCH OF CENTRAL
WISCONSIN...WHICH COULD DAMAGE COLD SENSITIVE VEGETATION.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH FRIDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TONIGHT.

LMZ521-522-541>543-212000-
THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK
ISLAND PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN-
300 PM CDT FRI APR 20 2012

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

.DAY ONE...TONIGHT

SMALL CRAFT CONDITIONS WILL CONTINUE INTO THE EVENING HOURS AND MAY
POSE A HAZARD TO MARINERS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH FRIDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
926 AM CDT FRI APR 20 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0745 AM     SNOW             BEAR CREEK              44.53N 88.71W
04/20/2012  M3.0 INCH        OUTAGAMIE          WI   NWS EMPLOYEE

            RELAYED TO NWS GREEN BAY FROM NWS DULUTH.

&&

MG