Freeze Warning 1, NWS Green Bay, WI

052 
WWUS73 KGRB 251654
NPWGRB

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREEN BAY WI
1154 AM CDT SUN MAR 25 2012

...MUCH COLDER TEMPERATURES EXPECTED TONIGHT...

.A COLD FRONT MOVING THROUGH THE STATE TODAY WILL BRING A BRIEF
COLD SPELL TO THE REGION...WITH TEMPERATURES EXPECTED TO FALL TO
NEAR OR BELOW FREEZING OVER CENTRAL AND NORTHEAST WISCONSIN
TONIGHT.

WIZ005-010>013-018-019-021-260600-
/O.CON.KGRB.FZ.W.0001.120326T0700Z-120326T1300Z/
VILAS-ONEIDA-FOREST-FLORENCE-NORTHERN MARINETTE-LINCOLN-LANGLADE-
NORTHERN OCONTO-
INCLUDING THE CITIES OF...EAGLE RIVER...RHINELANDER...CRANDON...
TOMAHAWK...ANTIGO
1154 AM CDT SUN MAR 25 2012

...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 8 AM CDT
MONDAY...

* TEMPERATURES WILL DROP TO BETWEEN 24 AND 29 DEGREES AFTER 
  MIDNIGHT TONIGHT. 

* IMPACTS...COLD SENSITIVE VEGETATION WILL BE EXTREMELY 
  VULNERABLE TO SEVERE DAMAGE DUE TO EXPECTED FREEZING 
  TEMPERATURES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE EXPECTED.
THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION.

&&

$$

MPC

479 
WWUS73 KGRB 260234
NPWGRB

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREEN BAY WI
934 PM CDT SUN MAR 25 2012

...MUCH COLDER TEMPERATURES EXPECTED TONIGHT...

.A COLD FRONT WILL USHER MUCH COLDER AIR INTO THE REGION TONIGHT...
WITH TEMPERATURES EXPECTED TO FALL WELL BELOW FREEZING OVER NORTH
CENTRAL AND FAR NORTHEAST WISCONSIN. THIS WILL RESULT IN A HARD
FREEZE...WHICH WILL KILL ANY EARLY SEASON VEGETATION THAT HAS
BEEN LEFT UNPROTECTED.

WIZ005-010>013-018-019-021-261400-
/O.EXT.KGRB.FZ.W.0001.120326T0600Z-120326T1400Z/
VILAS-ONEIDA-FOREST-FLORENCE-NORTHERN MARINETTE-LINCOLN-LANGLADE-
NORTHERN OCONTO-
INCLUDING THE CITIES OF...EAGLE RIVER...RHINELANDER...CRANDON...
TOMAHAWK...ANTIGO
934 PM CDT SUN MAR 25 2012

...FREEZE WARNING NOW IN EFFECT FROM 1 AM TO 9 AM CDT MONDAY...

* TEMPERATURES WILL DROP TO BETWEEN 18 AND 28 DEGREES AFTER
  MIDNIGHT TONIGHT.

* IMPACTS...EARLY SEASON COLD-SENSITIVE VEGETATION WILL BE
  EXTREMELY VULNERABLE TO SEVERE DAMAGE DUE TO TEMPERATURES WELL
  BELOW FREEZING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS THAT WIDESPREAD SUB-FREEZING TEMPERATURES
ARE EXPECTED. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE
PLANTS...WHICH ARE GROWING WELL AHEAD OF SCHEDULE DUE TO THE RECENT
WARM WEATHER.

&&

$$
KIECKBUSCH

841 
WWUS73 KGRB 261304
NPWGRB

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREEN BAY WI
804 AM CDT MON MAR 26 2012

...TEMPERATURES WARMING THIS MORNING...

.TEMPERATURES REMAIN WELL BELOW FREEZING ACROSS NORTH-CENTRAL
WISCONSIN...BUT WILL RAPIDLY WARM INTO THE 30S LATER THIS MORNING.
THE FREEZE WARNING WILL BE ALLOWED TO EXPIRE.

WIZ005-010>013-018-019-021-261415-
/O.CAN.KGRB.FZ.W.0001.000000T0000Z-120326T1400Z/
VILAS-ONEIDA-FOREST-FLORENCE-NORTHERN MARINETTE-LINCOLN-LANGLADE-
NORTHERN OCONTO-
INCLUDING THE CITIES OF...EAGLE RIVER...RHINELANDER...CRANDON...
TOMAHAWK...ANTIGO
804 AM CDT MON MAR 26 2012

...FREEZE WARNING HAS EXPIRED...

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS LET THE FREEZE
WARNING EXPIRE.


$$

MPC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREEN BAY WI
344 AM CDT SUN MAR 25 2012

.SHORT TERM...TODAY AND MONDAY.

FORECAST CONCERNS THIS PERIOD ON LOW TEMPERATURES TONIGHT.

08Z MSAS ANALYSIS SHOWING COLD FRONT EXTENDING FROM NEAR IMT TO
LSE WITH SIG SHORT WAVE NOW MOVING THROUGH JAMES BAY REGION.
CLOUDS EXITING SE CWA...WITH PATCHY STRATUS MOVING OVER NORTHERN
WI. MUCH DRIER AIR MOVING IN BEHIND FRONT WITH DEW POINTS ALREADY
DROPPING INTO THE 30S OVER NW WI.

MODELS FAIRLY SIMILAR THIS PERIOD...MOVING INITIAL FRONT THROUGH
CWA THIS MORNING...THOUGH THE COLDER AIR EXPECTED TO ARRIVE WITH
SECONDARY FRONT LATE THIS AFTERNOON/EVENING. STRATUS EXPECTED TO
MIX OUT THIS MORNING GIVEN DRIER AIR...WITH SUNSHINE EXPECTED FOR
MUCH OF DAY. BUFFY SOUNDINGS SHOW MIXING TO 925MB WHICH GIVES TEMPS
IN THE 50S FAR NORTH NORTH...MID 60S SOUTH.

SECONDARY FRONT/TROF TO BRING SURGE OF COLDER AIR SOUTH AND WITH IT
SHIFT WINDS TO THE NORTHEAST. WENT A BIT WARMER THAN PREVIOUS
FORECAST GIVEN THOUGHTS THAT WINDS WILL STAY UP...AND SOME MID
HIGH CLOUDS EXPECTED TO MOVE IN OVER SOUTHWEST LATE. BUFFY
SOUNDINGS INDICATE GUSTINESS THROUGH MUCH OF NIGHT WITH STEEP
LAPSE RATES OFF THE SURFACE. EITHER WAY...TEMPS STILL COLD ENOUGH OVER
NORTHERN COUNTIES TO ISSUE FREEZE WARNING ATTM WITH LOWS EXPECTED
TO BE BETWEEN 24 AND 28 DEGREES. DUE TO WINDS HAVE NOT PUT FROST
MENTION IN THE GRIDS.

COLD AIR MOVES EAST QUICKLY WITH RIDGE MOVING THROUGH MONDAY.
TEMPERATURES EXPECTED TO BE AT NORMAL LEVELS FOR THIS TIME OF
YEAR.

.LONG TERM...MONDAY NIGHT THROUGH SATURDAY.

WARM FRONT WILL PUSH NORTH TOWARDS WISCONSIN MONDAY NIGHT. SOME
MODEL DIFFERENCES ON THE ARRIVAL OF PRECIPITATION DURING THE LATE
EVENING BETWEEN THE QUICKER WRF/GFS MODEL AND THE SLOWER
EC/CANADIAN MODELS. HAVE TAKEN A BLEND BETWEEN THE QUICKER AND
SLOWER SOLUTIONS FOR PRECIPITATION CHANCES MONDAY EVENING. SHOWERS
ARE LIKELY WITH SCATTERED THUNDERSTORMS AFTER MIDNIGHT. MODELS
CONTINUE TO SHOW A COLD DRY POCKET AROUND 925MB...THEREFORE RAIN
COULD BE MIXED WITH A LITTLE SLEET AT THE ONSET. OVERNIGHT...
INCREASING 850MB WINDS OF 50 TO 60 KNOTS...850MB LIFTED INDICES
DROPPING TO 0 C TO -3 C ACROSS SOUTHWEST WISCONSIN AND STEEP
700/500MB LAPSE RATES WILL SUPPORT SCATTERED THUNDERSTORM WORDING.
FOR THE TIME BEING...WILL MENTION SMALL HAIL AS AIR MASS IS VERY
COOL AND WET BULB HEIGHTS ARE FAIRLY LOW. DUE TO COOL AIR MASS AT
THE SURFACE WHICH WILL SLOW THE MELTING OF THE HAIL ALOFT...COULD
NOT RULE OUT A FEW LARGE HAIL STONES.

MANY QUESTIONS LINGER ON TUESDAY WITH RESPECT TO MAX TEMPERATURES
AND AFTERNOON CONVECTION ALONG COLD FRONT. SCATTERED SHOWERS AND
THUNDERSTORMS TUESDAY MORNING SHOULD PUSH EAST OF THE AREA BY
MID DAY. WARM FRONT IS EXPECTED TO WORK INTO FAR NORTHEAST WISCONSIN
BY LATE TUESDAY AFTERNOON. HAVE PROJECTED HIGH TEMPERATURES
RANGING FROM NEAR 50 ACROSS THE FAR NORTHEAST DUE TO COOLING
INFLUENCES OF THE BAY AND LAKE...TO THE MIDDLE AND UPPER 60S
TOWARDS WISCONSIN RAPIDS AND MARSHFIELD. 925MB TEMPERATURES ON THE
GFS/WRF DO SUPPORT TEMPERATURES IN THE LOWER TO MIDDLE 70S IF SKIES
BECOME PARTLY CLOUDY. MAIN QUESTION WILL THERE BE ENOUGH CLEARING
FROM MORNING CONVECTION AND THE ARRIVAL OF THE COLD FRONT TUESDAY
AFTERNOON TO ALLOW FOR STRONG OR SEVERE STORMS TO FORM. AT THE
MOMENT CONFIDENCE IS LOW...BUT VERY WARM 925MB TEMPERATURES AND
STRONG SOUTHERLY WINDS WOULD SUGGEST THAT SOME CLEARING WILL TAKE
PLACE...ESPECIALLY ACROSS CENTRAL WISCONSIN. BULK SHEAR VALUES OF
55 TO 60 WOULD SUPPORT THE FORMATION OF SUPER CELLS. MODIFIED
SOUNDINGS NEAR WISCONSIN RAPIDS USING A TEMP OF 66 AND A DEW POINT
OF 54 GIVES US 500-100 J/KG WITH LITTLE CIN. WINDEX VALUES OF 39
KNOTS AND WET BULB HEIGHT AROUND SEVEN THOUSAND FEET SUPPORT THE
POTENTIAL FOR STRONG WINDS AND LARGE HAIL IF THE STORMS CAN FORM
ALONG THE FRONT. IF WE SHOULD WARM INTO THE LOWER TO MIDDLE 70S
TUESDAY AFTERNOON ACROSS THE SOUTHWEST...MODIFIED SOUNDING USING A
TEMP OF 74 AND DEW POINT OF 56 WOULD GIVE US NEARLY 2000 J/KG OF
CAPE WITH NO CIN AND A LIFTED INDEX VALUE OF -5. WINDEX VALUE OF
51 KNOTS NOTED AND WET BULB HEIGHT A LITTLE OVER SEVEN THOUSAND
FEET. AGAIN...STORM FORMATION WILL BE DEPENDENT ON HOW MUCH CLEARING
TAKES PLACE TUESDAY AFTERNOON. ANY STORMS THAT DO FORM WILL EXIT
NORTHEAST WISCONSIN BY 03Z WEDNESDAY.

ATTENTION THEN TURNS TO ANOTHER COLD SNAP WEDNESDAY AFTERNOON INTO
THURSDAY. LATEST MODELS RUNS TONIGHT SUGGEST THAT THERE COULD BE
A MIX OF RAIN AND SNOW WEDNESDAY AFTERNOON ACROSS THE FAR NORTH...
THEN THE POTENTIAL EXISTS FOR ANOTHER HARD FREEZE ACROSS THE
FAR NORTH LATE WEDNESDAY NIGHT.

A COLD FRONT WILL MOVE ACROSS THE REGION ON FRIDAY...BRINGING ANOTHER
CHANCE FOR SHOWERS AND THUNDERSTORMS.
&&

.AVIATION...SCT-OVC STRATOCUMULUS WITH BASES IN THE 4-6K FT
RANGE WERE OBSERVED ACROSS THE FORECAST AREA LATE THIS EVENING.
WHERE SKIES HAD TEMPORARILY CLEARED...PATCHY FOG DEVELOPED. THE
FOG WAS LOCALLY DENSE. THE PATCHY FOG SHOULD CONTINUE UNTIL THE
WINDS PICK UP AND DRIER AIR ARRIVES IN THE WAKE OF A COLD FRONT
LATER TONIGHT. LOW CLOUDS OVER NE MN HAVE BEEN SLOW TO MOVE TOWARD
THE AREA THIS EVENING...BUT STILL THINK THEY MAKE IT INTO AT LEAST
PART OF THE FORECAST AREA LATER TONIGHT. WILL MENTION SCT-BKN015
IN THE TAFS LATE TONIGHT INTO EARLY SUNDAY. DRY AIR BEHIND THE
FRONT SHOULD ERODE ANY MVFR CIGS BY MID-MORNING SUNDAY...LEAVING
VFR CONDITIONS FOR THE REMAINDER OF THE DAY. GUSTY NE WINDS MAY
DEVELOP IN THE FOX VALLEY/LAKESHORE AREAS LATE SUNDAY AFTERNOON
AND EVENING.

KIECKBUSCH
&&

.MARINE...
A COLD FRONT MOVING ACROSS THE AREA WILL BRING GUSTY NORTHEAST
WINDS TO THE AREA TONIGHT AND EARLY MONDAY. GUSTS TO 25 TO 30
KNOTS POSSIBLE OVER THE LAKE AND BAY. A WARM FRONT WILL PUSH
NORTHWARD ACROSS THE AREA TUESDAY. GUSTS TO NEAR GALE FORCE FROM
THE SOUTHEAST/SOUTH ARE POSSIBLE ON TUESDAY.

&&

.GRB WATCHES/WARNINGS/ADVISORIES...
FREEZE WARNING FROM 2 AM TO 8 AM CDT MONDAY FOR WIZ005-010>013-
018-019-021.

&&

TE/ECKBERG

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREEN BAY WI
244 PM CDT SAT MAR 24 2012

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-251945-
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-
244 PM CDT SAT MAR 24 2012

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

.DAY ONE...TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH SATURDAY

A HARD FREEZE IS POSSIBLE SUNDAY NIGHT ACROSS NORTH-CENTRAL AND
FAR NORTHEAST WISCONSIN. THE RECORD-BREAKING WARM EARLY SPRING HAS
RESULTED IN AN UNUSUALLY EARLY START TO THE GROWING SEASON. SOME
FLOWERING PLANTS ARE FOUR TO SIX WEEKS AHEAD OF SCHEDULE. THIS
MAKES COLD-SENSITIVE VEGETATION EXTREMELY VULNERABLE TO SEVERE
DAMAGE IF FREEZING TEMPERATURES OCCUR.

THERE IS A CHANCE OF THUNDERSTORMS LATE MONDAY NIGHT INTO TUESDAY
EVENING. IT IS TOO EARLY TO DETERMINE IF ANY OF THE STORMS WILL BE
SEVERE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TONIGHT.

LMZ521-522-541>543-251945-
THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK
ISLAND PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN-
244 PM CDT SAT MAR 24 2012

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

.DAY ONE...TONIGHT

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH SATURDAY

GUSTY NORTHEAST WINDS ARE EXPECTED SUNDAY NIGHT...WITH A FEW
GUSTS TO GALE FORCE POSSIBLE.

THERE IS A CHANCE OF THUNDERSTORMS NEXT TUESDAY AND TUESDAY NIGHT.
GUSTS TO NEAR GALE FORCE ARE POSSIBLE FROM THE SOUTHEAST ON TUESDAY.

MPC/RDM