Alert archive / Minnesota / Winter Weather Advisories in 2009

Winter Weather Advisory 13, NWS Twin Cities, MN

December 13, 200942 counties in Minnesota; 9 counties in Wisconsin

NWS Twin Cities, MN issued this winter weather advisory at Dec 13, 2009, 3:19 AM CST for 42 counties in Minnesota; 9 counties in Wisconsin. It took effect at Dec 13, 2009, 6:00 PM CST. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued
Dec 13, 2009, 3:19 AM CST (09:19 UTC)
In effect from
Dec 13, 2009, 6:00 PM CST
Expired
Dec 14, 2009, 9:00 AM CST
In force
15 hr
Issued by
NWS Twin Cities, MN
All 51 counties

Anoka County, MN, Benton County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chippewa County, MN, Chisago County, MN, Dakota County, MN, Douglas County, MN, Faribault County, MN, Freeborn County, MN, Goodhue County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Le Sueur County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Nicollet County, MN, Pope County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Steele County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Wright County, MN, Yellow Medicine County, MN, Barron County, WI, Chippewa County, WI, Dunn County, WI, Eau Claire County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Rusk County, WI, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 20 km from the middle of the area, began a volume at 09:24 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 9.3 hours before the alert went out and 17 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2009-12-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2009-12-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 351 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
825 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
351 m²/s²
0-3 km storm-relative helicity
379 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS43 KMPX 130919
WSWMPX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
319 AM CST SUN DEC 13 2009

...ACCUMULATING SNOWFALL TO IMPACT THE MONDAY MORNING COMMUTE...

.A WINTER WEATHER ADVISORY FOR SNOW HAS BEEN ISSUED FOR PARTS OF
CENTRAL AND SOUTH CENTRAL MINNESOTA AND WEST CENTRAL WISCONSIN FOR
SUNDAY NIGHT INTO MONDAY MORNING.

SNOW IS EXPECTED TO BEGIN ACROSS WEST AND SOUTH CENTRAL MINNESOTA
THIS EVENING...AND SPREAD EASTWARD ACROSS CENTRAL MINNESOTA AND WEST
CENTRAL WISCONSIN OVERNIGHT AND EARLY MONDAY MORNING. TOTAL SNOWFALL
AMOUNTS OF 2 TO 4 INCHES ARE EXPECTED BY MID MORNING MONDAY.
WHILE THE EXPECTED ACCUMULATIONS ARE NOT SIGNIFICANT...THE BULK
OF THE SNOW WILL FALL QUICKLY BETWEEN MIDNIGHT SUNDAY NIGHT AND 9
AM CST MONDAY...AND LIKELY COMPLICATE THE MONDAY MORNING COMMUTE.

MONDAY MORNING COMMUTERS SHOULD BE PREPARED FOR SNOW COVERED
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.


MNZ041-042-047>049-054>058-064>067-073>075-082-083-091-092-131730-
/O.NEW.KMPX.WW.Y.0013.091214T0000Z-091214T1200Z/
DOUGLAS-TODD-STEVENS-POPE-STEARNS-LAC QUI PARLE-SWIFT-CHIPPEWA-
KANDIYOHI-MEEKER-YELLOW MEDICINE-RENVILLE-MCLEOD-SIBLEY-REDWOOD-
BROWN-NICOLLET-WATONWAN-BLUE EARTH-MARTIN-FARIBAULT-
INCLUDING THE CITIES OF...ALEXANDRIA...LONG PRAIRIE...MORRIS...
GLENWOOD...ST. CLOUD...MADISON...BENSON...MONTEVIDEO...WILLMAR...
LITCHFIELD...GRANITE FALLS...OLIVIA...HUTCHINSON...GAYLORD...
REDWOOD FALLS...NEW ULM...ST. PETER...ST. JAMES...MANKATO...
FAIRMONT...BLUE EARTH
319 AM CST SUN DEC 13 2009

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
6 AM CST MONDAY...

THE NATIONAL WEATHER SERVICE IN TWIN CITIES/CHANHASSEN HAS ISSUED
A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 6 PM
THIS EVENING TO 6 AM CST MONDAY.


* SNOW IS EXPECTED TO BEGIN ACROSS WEST AND SOUTH CENTRAL
  MINNESOTA SUNDAY EVENING...AND SPREAD EASTWARD ACROSS CENTRAL
  MINNESOTA OVERNIGHT INTO MONDAY MORNING.

* TOTAL SNOWFALL AMOUNTS OF 2 TO 4 INCHES ARE EXPECTED TO COMPLICATE
  THE MONDAY MORNING COMMUTE.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

MNZ043>045-050>053-059>063-068>070-076>078-084-085-093-WIZ014>016-
023>028-131730-
/O.NEW.KMPX.WW.Y.0013.091214T0300Z-091214T1500Z/
MORRISON-MILLE LACS-KANABEC-BENTON-SHERBURNE-ISANTI-CHISAGO-
WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON-CARVER-SCOTT-DAKOTA-
LE SUEUR-RICE-GOODHUE-WASECA-STEELE-FREEBORN-POLK-BARRON-RUSK-
ST. CROIX-PIERCE-DUNN-PEPIN-CHIPPEWA-EAU CLAIRE-
INCLUDING THE CITIES OF...LITTLE FALLS...PRINCETON...MORA...
FOLEY...ELK RIVER...CAMBRIDGE...CENTER CITY...MONTICELLO...
MINNEAPOLIS...BLAINE...ST. PAUL...STILLWATER...CHASKA...
SHAKOPEE...BURNSVILLE...LE SUEUR...FARIBAULT...RED WING...
WASECA...OWATONNA...ALBERT LEA...AMERY...BALSAM LAKE...
RICE LAKE...BARRON...LADYSMITH...HUDSON...NEW RICHMOND...
RIVER FALLS...PRESCOTT...MENOMONIE...BOYCEVILLE...DURAND...
PEPIN...CHIPPEWA FALLS...BLOOMER...EAU CLAIRE...ALTOONA
319 AM CST SUN DEC 13 2009

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO
9 AM CST MONDAY...

THE NATIONAL WEATHER SERVICE IN TWIN CITIES/CHANHASSEN HAS ISSUED
A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 9 PM
THIS EVENING TO 9 AM CST MONDAY.

* SNOW IS EXPECTED TO OVERSPREAD CENTRAL AND SOUTH CENTRAL MINNESOTA
  AND WEST CENTRAL WISCONSIN SUNDAY NIGHT INTO MONDAY MORNING.

* TOTAL SNOWFALL AMOUNTS OF 2 TO 4 INCHES ARE EXPECTED TO COMPLICATE
  THE MONDAY MORNING COMMUTE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL
CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

&&

$$
6 follow-up statements
000 
WWUS43 KMPX 131649
WSWMPX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1049 AM CST SUN DEC 13 2009

...ACCUMULATING SNOWFALL TO IMPACT THE MONDAY MORNING COMMUTE...

.A WINTER WEATHER ADVISORY FOR SNOW REMAINS IN EFFECT FOR PARTS OF
CENTRAL AND SOUTH CENTRAL MINNESOTA AND WEST CENTRAL WISCONSIN FOR
TONIGHT INTO MONDAY MORNING.

SNOW IS EXPECTED TO BEGIN ACROSS WEST AND SOUTH CENTRAL MINNESOTA
THIS EVENING...AND SPREAD EASTWARD ACROSS CENTRAL MINNESOTA AND
WEST CENTRAL WISCONSIN OVERNIGHT AND EARLY MONDAY MORNING. TOTAL
SNOWFALL AMOUNTS OF 2 TO 4 INCHES ARE EXPECTED BY MID MORNING
MONDAY. THE HEAVIER SNOW TOTALS WILL LIKELY FALL OVER EAST CENTRAL
MINNESOTA INTO WEST CENTRAL WISCONSIN. THE BULK OF THE SNOW IS
EXPECTED TO FALL QUICKLY BETWEEN MIDNIGHT TONIGHT AND 9 AM CST
MONDAY...AND LIKELY COMPLICATE THE MONDAY MORNING COMMUTE.

MONDAY MORNING COMMUTERS SHOULD BE PREPARED FOR SNOW COVERED
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

MNZ041-042-047>049-054>058-064>067-073>075-082-083-091-092-140100-
/O.CON.KMPX.WW.Y.0013.091214T0000Z-091214T1200Z/
DOUGLAS-TODD-STEVENS-POPE-STEARNS-LAC QUI PARLE-SWIFT-CHIPPEWA-
KANDIYOHI-MEEKER-YELLOW MEDICINE-RENVILLE-MCLEOD-SIBLEY-REDWOOD-
BROWN-NICOLLET-WATONWAN-BLUE EARTH-MARTIN-FARIBAULT-
INCLUDING THE CITIES OF...ALEXANDRIA...LONG PRAIRIE...MORRIS...
GLENWOOD...ST. CLOUD...MADISON...BENSON...MONTEVIDEO...WILLMAR...
LITCHFIELD...GRANITE FALLS...OLIVIA...HUTCHINSON...GAYLORD...
REDWOOD FALLS...NEW ULM...ST. PETER...ST. JAMES...MANKATO...
FAIRMONT...BLUE EARTH
1049 AM CST SUN DEC 13 2009

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS
EVENING TO 6 AM CST MONDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS
EVENING TO 6 AM CST MONDAY. 

* SNOW IS EXPECTED TO BEGIN ACROSS WEST AND SOUTH CENTRAL
  MINNESOTA THIS EVENING...AND SPREAD EASTWARD ACROSS CENTRAL
  MINNESOTA OVERNIGHT INTO MONDAY MORNING.

* TOTAL SNOWFALL AMOUNTS OF 2 TO 4 INCHES ARE EXPECTED TO 
  COMPLICATE THE MONDAY MORNING COMMUTE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

MNZ043>045-050>053-059>063-068>070-076>078-084-085-093-WIZ014>016-
023>028-140100-
/O.CON.KMPX.WW.Y.0013.091214T0300Z-091214T1500Z/
MORRISON-MILLE LACS-KANABEC-BENTON-SHERBURNE-ISANTI-CHISAGO-
WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON-CARVER-SCOTT-DAKOTA-
LE SUEUR-RICE-GOODHUE-WASECA-STEELE-FREEBORN-POLK-BARRON-RUSK-
ST. CROIX-PIERCE-DUNN-PEPIN-CHIPPEWA-EAU CLAIRE-
INCLUDING THE CITIES OF...LITTLE FALLS...PRINCETON...MORA...
FOLEY...ELK RIVER...CAMBRIDGE...CENTER CITY...MONTICELLO...
MINNEAPOLIS...BLAINE...ST. PAUL...STILLWATER...CHASKA...
SHAKOPEE...BURNSVILLE...LE SUEUR...FARIBAULT...RED WING...
WASECA...OWATONNA...ALBERT LEA...AMERY...BALSAM LAKE...
RICE LAKE...BARRON...LADYSMITH...HUDSON...NEW RICHMOND...
RIVER FALLS...PRESCOTT...MENOMONIE...BOYCEVILLE...DURAND...
PEPIN...CHIPPEWA FALLS...BLOOMER...EAU CLAIRE...ALTOONA
1049 AM CST SUN DEC 13 2009

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 PM THIS
EVENING TO 9 AM CST MONDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 PM THIS
EVENING TO 9 AM CST MONDAY. 

* SNOW IS EXPECTED TO OVERSPREAD CENTRAL MINNESOTA THIS EVENING
  AND INTO WEST CENTRAL WISCONSIN AROUND MIDNIGHT...LASTING INTO
  MONDAY MORNING. 

* TOTAL SNOWFALL AMOUNTS OF 2 TO 4 INCHES ARE EXPECTED TO 
  COMPLICATE THE MONDAY MORNING COMMUTE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$
000 
WWUS43 KMPX 132140
WSWMPX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
340 PM CST SUN DEC 13 2009

...ACCUMULATING SNOWFALL OVERNIGHT TO IMPACT THE MONDAY MORNING
COMMUTE...

.A WINTER WEATHER ADVISORY FOR SNOW REMAINS IN EFFECT FOR PARTS
OF CENTRAL AND SOUTH CENTRAL MINNESOTA AND WEST CENTRAL WISCONSIN
FOR TONIGHT INTO MONDAY MORNING.

SNOW WILL BEGIN ACROSS WESTERN MINNESOTA THIS EVENING...AND
SPREAD EASTWARD ACROSS EASTERN MINNESOTA AND WEST CENTRAL
WISCONSIN OVERNIGHT AND EARLY MONDAY MORNING. TOTAL SNOWFALL
AMOUNTS OF 2 TO 5 INCHES...WITH LOCALLY HIGHER AMOUNTS POSSIBLE
ACROSS THE SOUTHERN SUBURBS OF THE TWIN CITIES...TO RIVER
FALLS...MENOMONIE AND LADYSMITH WISCONSIN THROUGH MID MORNING
MONDAY. THE BULK OF THE SNOW IS EXPECTED TO FALL QUICKLY BETWEEN
MIDNIGHT AND 9 AM MONDAY...AND LIKELY COMPLICATE THE MONDAY
MORNING COMMUTE.

MONDAY MORNING COMMUTERS SHOULD BE PREPARED FOR SNOW COVERED
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

MNZ041-042-047>049-054>058-064>067-073>075-082-083-091-092-140545-
/O.CON.KMPX.WW.Y.0013.091214T0000Z-091214T1200Z/
DOUGLAS-TODD-STEVENS-POPE-STEARNS-LAC QUI PARLE-SWIFT-CHIPPEWA-
KANDIYOHI-MEEKER-YELLOW MEDICINE-RENVILLE-MCLEOD-SIBLEY-REDWOOD-
BROWN-NICOLLET-WATONWAN-BLUE EARTH-MARTIN-FARIBAULT-
INCLUDING THE CITIES OF...ALEXANDRIA...LONG PRAIRIE...MORRIS...
GLENWOOD...ST. CLOUD...MADISON...BENSON...MONTEVIDEO...WILLMAR...
LITCHFIELD...GRANITE FALLS...OLIVIA...HUTCHINSON...GAYLORD...
REDWOOD FALLS...NEW ULM...ST. PETER...ST. JAMES...MANKATO...
FAIRMONT...BLUE EARTH
340 PM CST SUN DEC 13 2009

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST
MONDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST
MONDAY. 

* SNOW WILL BEGIN ACROSS WEST CENTRAL MINNESOTA EARLY
  THIS EVENING...AND SPREAD EASTWARD ACROSS EASTERN MINNESOTA
  OVERNIGHT INTO MONDAY MORNING.

* TOTAL SNOWFALL AMOUNTS OF 2 TO 4 INCHES ARE EXPECTED TO 
  COMPLICATE THE MONDAY MORNING COMMUTE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

MNZ043>045-050>053-059>063-068>070-076>078-084-085-093-WIZ014>016-
023>028-140545-
/O.CON.KMPX.WW.Y.0013.091214T0300Z-091214T1500Z/
MORRISON-MILLE LACS-KANABEC-BENTON-SHERBURNE-ISANTI-CHISAGO-
WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON-CARVER-SCOTT-DAKOTA-
LE SUEUR-RICE-GOODHUE-WASECA-STEELE-FREEBORN-POLK-BARRON-RUSK-
ST. CROIX-PIERCE-DUNN-PEPIN-CHIPPEWA-EAU CLAIRE-
INCLUDING THE CITIES OF...LITTLE FALLS...PRINCETON...MORA...
FOLEY...ELK RIVER...CAMBRIDGE...CENTER CITY...MONTICELLO...
MINNEAPOLIS...BLAINE...ST. PAUL...STILLWATER...CHASKA...
SHAKOPEE...BURNSVILLE...LE SUEUR...FARIBAULT...RED WING...
WASECA...OWATONNA...ALBERT LEA...AMERY...BALSAM LAKE...
RICE LAKE...BARRON...LADYSMITH...HUDSON...NEW RICHMOND...
RIVER FALLS...PRESCOTT...MENOMONIE...BOYCEVILLE...DURAND...
PEPIN...CHIPPEWA FALLS...BLOOMER...EAU CLAIRE...ALTOONA
340 PM CST SUN DEC 13 2009

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 PM THIS
EVENING TO 9 AM CST MONDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 PM THIS
EVENING TO 9 AM CST MONDAY. 

* SNOW WILL OVERSPREAD EASTERN MINNESOTA THIS LATE THIS EVENING
  AND INTO WEST CENTRAL WISCONSIN AROUND MIDNIGHT...LASTING INTO
  MONDAY MORNING.

* TOTAL SNOWFALL AMOUNTS OF 2 TO 5 INCHES ARE EXPECTED TO
  COMPLICATE THE MONDAY MORNING COMMUTE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

JLT/RAH
000 
WWUS43 KMPX 140408
WSWMPX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1008 PM CST SUN DEC 13 2009

...ACCUMULATING SNOWFALL OVERNIGHT TO IMPACT THE MONDAY MORNING
COMMUTE...

.A WINTER WEATHER ADVISORY REMAINS IN EFFECT OVERNIGHT AND MONDAY
MORNING FOR CENTRAL AND SOUTH CENTRAL MINNESOTA AND WEST CENTRAL
WISCONSIN. 

SNOW ACROSS CENTRAL MINNESOTA WILL SPREAD EAST AND SOUTH
OVERNIGHT INTO SOUTHERN AND EASTERN AREAS OF MINNESOTA AS WELL AS
WEST CENTRAL WISCONSIN. SNOWFALL ACCUMULATION AROUND 2 INCHES IS
EXPECTED BY DAYBREAK ACROSS THE ADVISORY AREA. THE SNOW WILL
CONTINUE FOR A TIME MONDAY MORNING ACROSS EAST CENTRAL
MINNESOTA...INCLUDING THE TWIN CITIES METROPOLITAN AREA...AS WELL
AS WEST CENTRAL WISCONSIN...WITH AN ADDITIONAL INCH OR TWO OF
ACCUMULATION POSSIBLE.

MONDAY MORNING COMMUTERS SHOULD BE PREPARED FOR SNOW COVERED
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

MNZ041-042-047>049-054>058-064>067-073>075-082-083-091-092-141200-
/O.CON.KMPX.WW.Y.0013.000000T0000Z-091214T1200Z/
DOUGLAS-TODD-STEVENS-POPE-STEARNS-LAC QUI PARLE-SWIFT-CHIPPEWA-
KANDIYOHI-MEEKER-YELLOW MEDICINE-RENVILLE-MCLEOD-SIBLEY-REDWOOD-
BROWN-NICOLLET-WATONWAN-BLUE EARTH-MARTIN-FARIBAULT-
INCLUDING THE CITIES OF...ALEXANDRIA...LONG PRAIRIE...MORRIS...
GLENWOOD...ST. CLOUD...MADISON...BENSON...MONTEVIDEO...WILLMAR...
LITCHFIELD...GRANITE FALLS...OLIVIA...HUTCHINSON...GAYLORD...
REDWOOD FALLS...NEW ULM...ST. PETER...ST. JAMES...MANKATO...
FAIRMONT...BLUE EARTH
1008 PM CST SUN DEC 13 2009

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST
MONDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST
MONDAY. 

* SNOW ACROSS WEST CENTRAL MINNESOTA WILL SPREAD INTO SOUTH
  CENTRAL MINNESOTA OVERNIGHT. THE SNOW WILL THEN END EARLY
  MONDAY MORNING.

* TOTAL SNOWFALL AMOUNTS OF 2 TO 3 INCHES ARE EXPECTED TO
  COMPLICATE THE MONDAY MORNING COMMUTE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

MNZ043>045-050>053-059>063-068>070-076>078-084-085-093-WIZ014>016-
023>028-141215-
/O.CON.KMPX.WW.Y.0013.000000T0000Z-091214T1500Z/
MORRISON-MILLE LACS-KANABEC-BENTON-SHERBURNE-ISANTI-CHISAGO-
WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON-CARVER-SCOTT-DAKOTA-
LE SUEUR-RICE-GOODHUE-WASECA-STEELE-FREEBORN-POLK-BARRON-RUSK-
ST. CROIX-PIERCE-DUNN-PEPIN-CHIPPEWA-EAU CLAIRE-
INCLUDING THE CITIES OF...LITTLE FALLS...PRINCETON...MORA...
FOLEY...ELK RIVER...CAMBRIDGE...CENTER CITY...MONTICELLO...
MINNEAPOLIS...BLAINE...ST. PAUL...STILLWATER...CHASKA...
SHAKOPEE...BURNSVILLE...LE SUEUR...FARIBAULT...RED WING...
WASECA...OWATONNA...ALBERT LEA...AMERY...BALSAM LAKE...
RICE LAKE...BARRON...LADYSMITH...HUDSON...NEW RICHMOND...
RIVER FALLS...PRESCOTT...MENOMONIE...BOYCEVILLE...DURAND...
PEPIN...CHIPPEWA FALLS...BLOOMER...EAU CLAIRE...ALTOONA
1008 PM CST SUN DEC 13 2009

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST
MONDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST
MONDAY. 

* SNOW ACROSS CENTRAL MINNESOTA WILL SPREAD INTO EAST CENTRAL AND
  SOUTHEAST AREAS OF MINNESOTA AND WEST CENTRAL AREAS OF WISCONSIN
  OVERNIGHT. THE SNOW WILL PERSIST INTO MONDAY MORNING.

* TOTAL SNOWFALL AMOUNTS OF 2 TO 4 INCHES ARE EXPECTED TO 
  COMPLICATE THE MONDAY MORNING COMMUTE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

RAH
000 
WWUS43 KMPX 140837
WSWMPX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
237 AM CST MON DEC 14 2009

...ACCUMULATING SNOWFALL OVERNIGHT TO IMPACT THE MONDAY MORNING
COMMUTE...

.A WINTER WEATHER ADVISORY REMAINS IN EFFECT EARLY THIS MORNING
FOR CENTRAL AND SOUTH CENTRAL MINNESOTA AND WEST CENTRAL
WISCONSIN.

SNOW ACROSS CENTRAL MINNESOTA WILL CONTINUE SPREADING EAST INTO
WEST CENTRAL WISCONSIN EARLY THIS MORNING. ADDITIONAL DEVELOPMENT
IS EXPECTED ACROSS SOUTH CENTRAL MINNESOTA BY DAYBREAK.
 
SNOWFALL ACCUMULATIONS OF 1 TO 2 INCHES HAVE BEEN OBSERVED ACROSS
PARTS OF CENTRAL MINNESOTA AND WEST CENTRAL WISCONSIN PRIOR TO 2
AM CST...GENERALLY ALONG AND NORTH OF AN OLIVIA...TO GLENCOE...TO NEW
RICHMOND WISCONSIN LINE. AN ADDITIONAL ONE HALF TO ONE INCH OF
ACCUMULATION IS EXPECTED IN THESE AREAS PRIOR TO DAYBREAK
MONDAY...FOR TOTAL ACCUMULATIONS IN THE 2 TO 3 INCH RANGE ON
AVERAGE. A FEW TOTALS AROUND 4 INCHES ARE STILL POSSIBLE IN WEST
CENTRAL WISCONSIN...GENERALLY FROM NEW RICHMOND TO LADYSMITH AND
POINTS NORTHWARD. 

ANOTHER BATCH OF SNOW IS EXPECTED TO BLOSSOM FROM SOUTH CENTRAL
MINNESOTA TOWARD EAU CLAIRE WISCONSIN BY DAYBREAK...WHERE 1 TO 3
INCHES OF SNOW ARE EXPECTED PRIOR TO 9 AM CST.

MONDAY MORNING COMMUTERS SHOULD BE PREPARED FOR SNOW COVERED
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

MNZ041-042-047>049-054>058-064>067-073>075-082-083-091-092-141200-
/O.CON.KMPX.WW.Y.0013.000000T0000Z-091214T1200Z/
DOUGLAS-TODD-STEVENS-POPE-STEARNS-LAC QUI PARLE-SWIFT-CHIPPEWA-
KANDIYOHI-MEEKER-YELLOW MEDICINE-RENVILLE-MCLEOD-SIBLEY-REDWOOD-
BROWN-NICOLLET-WATONWAN-BLUE EARTH-MARTIN-FARIBAULT-
INCLUDING THE CITIES OF...ALEXANDRIA...LONG PRAIRIE...MORRIS...
GLENWOOD...ST. CLOUD...MADISON...BENSON...MONTEVIDEO...WILLMAR...
LITCHFIELD...GRANITE FALLS...OLIVIA...HUTCHINSON...GAYLORD...
REDWOOD FALLS...NEW ULM...ST. PETER...ST. JAMES...MANKATO...
FAIRMONT...BLUE EARTH
237 AM CST MON DEC 14 2009

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST EARLY
THIS MORNING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST EARLY
THIS MORNING. 

* SNOW ACROSS CENTRAL MINNESOTA WILL CONTINUE EARLY THIS MORNING.
  ADDITIONAL DEVELOPMENT IS EXPECTED ACROSS SOUTH CENTRAL
  MINNESOTA BY DAYBREAK.

* TOTAL SNOWFALL AMOUNTS OF 2 TO 3 INCHES ARE EXPECTED TO
  COMPLICATE THIS MORNINGS COMMUTE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

MNZ043>045-050>053-059>063-068>070-076>078-084-085-093-WIZ014>016-
023>028-141500-
/O.CON.KMPX.WW.Y.0013.000000T0000Z-091214T1500Z/
MORRISON-MILLE LACS-KANABEC-BENTON-SHERBURNE-ISANTI-CHISAGO-
WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON-CARVER-SCOTT-DAKOTA-
LE SUEUR-RICE-GOODHUE-WASECA-STEELE-FREEBORN-POLK-BARRON-RUSK-
ST. CROIX-PIERCE-DUNN-PEPIN-CHIPPEWA-EAU CLAIRE-
INCLUDING THE CITIES OF...LITTLE FALLS...PRINCETON...MORA...
FOLEY...ELK RIVER...CAMBRIDGE...CENTER CITY...MONTICELLO...
MINNEAPOLIS...BLAINE...ST. PAUL...STILLWATER...CHASKA...
SHAKOPEE...BURNSVILLE...LE SUEUR...FARIBAULT...RED WING...
WASECA...OWATONNA...ALBERT LEA...AMERY...BALSAM LAKE...
RICE LAKE...BARRON...LADYSMITH...HUDSON...NEW RICHMOND...
RIVER FALLS...PRESCOTT...MENOMONIE...BOYCEVILLE...DURAND...
PEPIN...CHIPPEWA FALLS...BLOOMER...EAU CLAIRE...ALTOONA
237 AM CST MON DEC 14 2009

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS
MORNING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS
MORNING. 

* SNOW ACROSS CENTRAL MINNESOTA WILL CONTINUE SPREADING EAST INTO
  WEST CENTRAL WISCONSIN EARLY THIS MORNING. ADDITIONAL
  DEVELOPMENT IS EXPECTED FROM SOUTH CENTRAL MINNESOTA TOWARD EAU
  CLAIRE WISCONSIN BY DAYBREAK.

* TOTAL SNOWFALL AMOUNTS OF 1 TO 3 INCHES ARE EXPECTED TO
  COMPLICATE THIS MORNINGS COMMUTE. A FEW TOTALS AROUND 4 INCHES
  ARE STILL POSSIBLE IN WEST CENTRAL WISCONSIN...GENERALLY FROM
  NEW RICHMOND TO LADYSMITH AND POINTS NORTHWARD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$
000 
WWUS43 KMPX 141233
WSWMPX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
633 AM CST MON DEC 14 2009

...ACCUMULATING SNOWFALL LINGERS ACROSS EAST AND SOUTH CENTRAL 
MINNESOTA AND WEST CENTRAL WISCONSIN THIS MORNING...

.A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST
GENERALLY ALONG AND EAST OF THE INTERSTATE 35 CORRIDOR FROM
CAMBRIDGE...TO THE TWIN CITIES METRO...TO ALBERT LEA. THE WINTER
WEATHER ADVISORY IS NO LONGER EFFECT ACROSS THE REMAINDER OF
CENTRAL AND SOUTH CENTRAL MINNESOTA...WHERE SNOW HAS TAPERED OFF. 

SNOWFALL ACCUMULATIONS OF 1 TO 3 INCHES WERE OBSERVED ACROSS
PARTS OF CENTRAL MINNESOTA AND WEST CENTRAL WISCONSIN PRIOR TO
DAYBREAK...GENERALLY ALONG AND NORTH OF AN OLIVIA...TO
CHANHASSEN...TO BALDWIN WISCONSIN LINE. AN ADDITIONAL ONE
HALF TO ONE INCH OF ACCUMULATION IS EXPECTED ALONG AND EAST OF THE
INTERSTATE 35 CORRIDOR THIS MORNING...FOR TOTAL ACCUMULATIONS IN
THE 2 TO 4 INCH RANGE ON AVERAGE. ISOLATED TOTALS AROUND 5 INCHES ARE
STILL POSSIBLE IN WEST CENTRAL WISCONSIN...GENERALLY FROM NEW
RICHMOND TO LADYSMITH AND POINTS NORTHWARD.

ALTHOUGH LITTLE TO NO ACCUMULATIONS HAD OCCURRED PRIOR TO DAYBREAK FROM
EXTREME SOUTH CENTRAL MINNESOTA NEAR ALBERT LEA...TO EAU CLAIRE
WISCONSIN...SNOW IS STILL EXPECTED THIS MORNING. TOTAL
ACCUMULATIONS IN THE ONE HALF INCH TO 2 INCH RANGE OF SNOW ARE
STILL POSSIBLE...WITH THE ACCUMULATIONS ON THE HIGHER END OF THAT
RANGE OCCURRING IN WEST CENTRAL WISCONSIN.

MORNING COMMUTERS SHOULD BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

MNZ043>045-050-051-059-141345-
/O.CAN.KMPX.WW.Y.0013.000000T0000Z-091214T1500Z/
MORRISON-MILLE LACS-KANABEC-BENTON-SHERBURNE-WRIGHT-
INCLUDING THE CITIES OF...LITTLE FALLS...PRINCETON...MORA...
FOLEY...ELK RIVER...MONTICELLO
633 AM CST MON DEC 14 2009

...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN TWIN CITIES/CHANHASSEN HAS
CANCELLED THE WINTER WEATHER ADVISORY. 

THE WINTER WEATHER ADVISORY IS NO LONGER EFFECT ACROSS PARTS OF
CENTRAL MINNESOTA...GENERALLY WEST OF THE INTERSTATE 35
CORRIDOR...WHERE SNOW HAS TAPERED OFF.

$$

MNZ052-053-060>063-068>070-076>078-084-085-093-WIZ014>016-023>028-
141500-
/O.CON.KMPX.WW.Y.0013.000000T0000Z-091214T1500Z/
ISANTI-CHISAGO-HENNEPIN-ANOKA-RAMSEY-WASHINGTON-CARVER-SCOTT-
DAKOTA-LE SUEUR-RICE-GOODHUE-WASECA-STEELE-FREEBORN-POLK-BARRON-
RUSK-ST. CROIX-PIERCE-DUNN-PEPIN-CHIPPEWA-EAU CLAIRE-
INCLUDING THE CITIES OF...CAMBRIDGE...CENTER CITY...MINNEAPOLIS...
BLAINE...ST. PAUL...STILLWATER...CHASKA...SHAKOPEE...BURNSVILLE...
LE SUEUR...FARIBAULT...RED WING...WASECA...OWATONNA...
ALBERT LEA...AMERY...BALSAM LAKE...RICE LAKE...BARRON...
LADYSMITH...HUDSON...NEW RICHMOND...RIVER FALLS...PRESCOTT...
MENOMONIE...BOYCEVILLE...DURAND...PEPIN...CHIPPEWA FALLS...
BLOOMER...EAU CLAIRE...ALTOONA
633 AM CST MON DEC 14 2009

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS
MORNING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS
MORNING. 

* SNOW WILL CONTINUE THIS MORNING ACROSS PARTS OF CENTRAL AND
  SOUTH CENTRAL MINNESOTA AND WEST CENTRAL WISCONSIN. 

* TOTAL SNOWFALL AMOUNTS OF 2 TO 4 INCHES ARE EXPECTED TO
  COMPLICATE THIS MORNINGS COMMUTE. A FEW TOTALS AROUND 5 INCHES
  ARE STILL POSSIBLE IN WEST CENTRAL WISCONSIN...GENERALLY FROM
  NEW RICHMOND TO LADYSMITH AND POINTS NORTHWARD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$
000 
WWUS43 KMPX 141459
WSWMPX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
859 AM CST MON DEC 14 2009

...ACCUMULATING SNOW WINDING DOWN...

.SNOW WILL CONTINUE OVER PARTS OF WEST CENTRAL WISCONSIN...FROM
EAU CLAIRE TO STANLEY...WITH ACCUMULATIONS REACHING 2 INCHES.
OVER THE REST OF SOUTH CENTRAL AND EAST CENTRAL MINNESOTA...AND
WEST CENTRAL WISCONSIN...ONLY PATCHES OF LIGHT SNOW OR FLURRIES
CAN BE EXPECTED FOR THE REST OF THE MORNING.


MNZ052-053-060>063-068>070-076>078-084-085-093-WIZ014>016-023>028-
141600-
/O.EXP.KMPX.WW.Y.0013.000000T0000Z-091214T1500Z/
ISANTI-CHISAGO-HENNEPIN-ANOKA-RAMSEY-WASHINGTON-CARVER-SCOTT-
DAKOTA-LE SUEUR-RICE-GOODHUE-WASECA-STEELE-FREEBORN-POLK-BARRON-
RUSK-ST. CROIX-PIERCE-DUNN-PEPIN-CHIPPEWA-EAU CLAIRE-
INCLUDING THE CITIES OF...CAMBRIDGE...CENTER CITY...MINNEAPOLIS...
BLAINE...ST. PAUL...STILLWATER...CHASKA...SHAKOPEE...BURNSVILLE...
LE SUEUR...FARIBAULT...RED WING...WASECA...OWATONNA...
ALBERT LEA...AMERY...BALSAM LAKE...RICE LAKE...BARRON...
LADYSMITH...HUDSON...NEW RICHMOND...RIVER FALLS...PRESCOTT...
MENOMONIE...BOYCEVILLE...DURAND...PEPIN...CHIPPEWA FALLS...
BLOOMER...EAU CLAIRE...ALTOONA
859 AM CST MON DEC 14 2009

...WINTER WEATHER ADVISORY WILL EXPIRE AT 9 AM CST THIS MORNING...

THE WINTER WEATHER ADVISORY WILL EXPIRE AT 9 AM CST THIS MORNING.

* ACCUMULATING SNOW ENDING EAST OF EAU CLAIRE BY 10 AM.

* TOTAL ACCUMULATIONS OVER THE REMAINDER OF WEST CENTRAL WISCONSIN
  INCLUDING EAU CLAIRE AND AUGUSTA...COULD REACH 2 INCHES.

$$

What forecasters said that day

The local office's own words before this winter weather advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Twin Cities, MN wrote its last area forecast discussion before this winter weather advisory went out at Dec 13, 12:03 AM CST, 3 hours 16 minutes earlier.

Area forecast discussion, Dec 13, 12:03 AM CST, 3 hours 16 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1203 AM CST SUN DEC 13 2009

.AVIATION... /06Z TAF ISSUANCE/

COLD FRONT AT TAF ISSUANCE STRETCHES FROM NW WI ACROSS THE WESTERN
TWIN CITIES TO FAIRMONT. THE FRONT WILL BE EAST AND SOUTH OF KEAU
BY 11Z. STRONG ARCTIC HIGH PRESSURE WILL CONTINUE TO SURGE
SOUTHEAST OVERNIGHT FROM ND. NORTHWEST WINDS NEAR 15 KNOTS WILL BE
COMMON INTO SUNDAY MORNING IN THE WAKE OF THE FRONT. MVFR CEILINGS
COVERING JUST ABOUT ALL OF THE TAF SITES CURRENTLY. MVFR VISIBILITY
LIKELY DEVELOPING AT KEAU SHORTLY AS LOW LEVEL MOISTURE CONTINUES
TO INCREASE AHEAD OF THE FRONT. SOME FZDZ IS ALSO EXPECTED AT KEAU
UNTIL THE FRONT MOVES THROUGH. IMPROVEMENT IN THE MVFR CEILINGS
WILL OCCUR FROM NW TO SE SUNDAY MORNING AS DRIER AIR FLOWS IN FROM
THE NW. A LOW PRESSURE SYSTEM WILL BEGIN MOVING EAST FROM COLORADO
SUNDAY EVENING. THIS FEATURE WILL BRING MVFR CEILINGS/VISIBILITIES
IN SNOW TO KAXN AND KRWF NEAR THE END OF THE TAF PERIOD. THE SNOW
WITH CEILINGS AND VISIBILITIES BELOW MVFR FORECAST INTO KMSP BY
14/09Z AND CONTINUING TO 14/15Z.

KAXN...OVC010-015 WITH FLURRIES WILL BE PASSING ACROSS THE SITE
BETWEEN 06Z AND 08Z WITH SCT CONDITIONS DEVELOPING AFTER 08Z.
NORTH TO NORTHWEST WINDS 13 KNOTS GUSTING TO OVER 20 KNOTS
OVERNIGHT BEFORE SETTLING BACK TO 10 KNOTS ON SUNDAY. MVFR
CONDITIONS IN SNOW EXPECTED TO SPREAD IN BY 14/04Z AND CONTINUE
THROUGH 14/12Z.

KSTC...MVFR CEILINGS MAY SCATTER FOR A TIME EARLY THIS MORNING
BEFORE MORE MVFR CEILINGS ARRIVE WITH THE ARCTIC AIR. THE SECOND
BATCH OF CLOUDS EXPECTED TO SCATTER AFTER 12Z. NORTH WINDS NEAR 12
KNOTS WITH GUSTS TO 18 KNOTS OVERNIGHT THEN MORE OF A NORTH WIND
NEAR 10 KNOTS ON SUNDAY.

KRWF...MVFR CEILINGS INTO SUNDAY MORNING AS ARCTIC AIR AND NORTH
WINDS OF 15 TO 20 KNOTS OCCUR. SCT CONDITIONS EXPECTED BY 14Z WITH
BKN-OVC VFR CEILINGS SUNDAY AFTERNOON AHEAD OF THE COLORADO LOW.
SNOW SHOULD BEGIN NEAR 14/06Z AND CONTINUE TO 14/12Z WITH MVFR OR
LOWER CONDITIONS.

KMSP...MVFR CEILINGS INTO SUNDAY MORNING AS ARCTIC AIR AND NORTH
WINDS AT 12 TO 18 KNOTS SPREAD IN. SCT CONDITIONS EXPECTED BY 13Z
WITH BKN-OVC VFR CEILINGS SUNDAY AFTERNOON AHEAD OF THE COLORADO
LOW. SNOW EXPECTED TO SPREAD ACROSS THE TWIN CITIES IN THE 14/06Z
TO 14/09Z TIME FRAME WITH A RAPID LOWERING TO IFR CONDITIONS IN
THE 14/09Z TO 14/12Z PERIOD.

KRNH...MVFR CEILINGS INTO SUNDAY MORNING AS ARCTIC AIR AND NORTH
WINDS AT 10 TO 15 KNOTS SPREAD IN. SCT CONDITIONS EXPECTED BY 15Z.
BKN- OVC VFR CEILINGS DEVELOPING SUNDAY AFTERNOON AHEAD OF THE
COLORADO LOW. SNOW EXPECTED AFTER THE END OF THE TAF PERIOD WITH
DETERIORATING CONDITIONS IN THE 14/09Z TO 14/12Z TIME FRAME.

KEAU...MVFR CEILINGS OVERNIGHT AS A COLD FRONT MOVES THROUGH
BY 11Z. SOME POTENTIAL FOR LIGHT FREEZING DRIZZLE UNTIL THE FRONT
MOVES THROUGH. ARCTIC AIR AND NORTH WINDS AT 10 TO 15 KNOTS FOR
SUNDAY WITH MVFR CEILINGS LIFTING BY 15Z. BKN-OVC VFR CEILINGS
DEVELOPING SUNDAY NIGHT AHEAD OF THE COLORADO LOW. SNOW EXPECTED
ALONG WITH DETERIORATING CONDITIONS IN THE 14/12Z TO 14/18Z TIME
FRAME.

&&

.DISCUSSION... /ISSUED 259 PM CST SAT DEC 12 2009/

PRIMARY FORECAST CONCERN IS CHANCE FOR ACCUMULATING SNOW SUNDAY
NIGHT INTO MONDAY. CURRENT WATER VAPOR IMAGERY AND RUC UPPER AIR
ANALYSES SHOW BROAD AND DEEP UPPER LOW OVER CENTRAL CANADA... WITH
FAST WEST-EAST FLOW IN PLACE ACROSS THE CONUS ALONG WITH A FEW
RIPPLES/SHORT WAVES. SHORTWAVE CURRENTLY MOVING OUT INTO THE
PLAINS WILL SWING BY TO OUR SOUTH AND EAST LATE TONIGHT INTO
SUNDAY MORNING... WITH MOST OF ITS ASSOCIATED FORCING REMAINING TO
OUR SOUTH. SOME FORCING ON ITS NORTHERN PERIPHERY... ALONG WITH
CONVERGENCE ASSOCIATED WITH THE BOUNDARY DROPPING THROUGH... MAY
STILL WORK TO SQUEEZE OUT SOME PCPN TONIGHT OVER MAINLY THE
EASTERN CWFA. MOISTURE DEPTH IS LIMITED WITH THE POTENTIAL FOR ICE
CRYSTALS FAIRLY LOW... SO WILL CONTINUE TO MENTION THE CHANCE FOR
SOME FREEZING DRIZZLE ALONG WITH FLURRIES TONIGHT AS THINGS MOVE
THROUGH THE AREA.

SHORTWAVE CURRENTLY MOVING ONSHORE INTO CALIFORNIA WILL BE THE
CULPRIT BEHIND OUR CHANCES FOR SNOW SUNDAY NIGHT INTO MONDAY. THE
12Z MODEL GUIDANCE IS IN REASONABLE AGREEMENT ON WHERE THIS SYSTEM
WILL TRACK... ALTHOUGH TIMING DOES VARY A BIT... AND THERE IS
ENOUGH VARIATION IN TRACK TO MAKE IT DIFFICULT TO PIN DOWN WHERE
THE MOST SIGNIFICANT SNOWFALL WILL OCCUR. WITH THE SYSTEM MOVING
ONSHORE IN THE NEXT 6 HOURS INTO A MORE DATA RICH ENVIRONMENT...
PERHAPS THE 00Z RUNS WILL GET A BETTER HANDLE ON THINGS AND COME
INTO CLEARER FOCUS. FOR NOW... BASED FORECAST ON A COMBINATION OF
THE AVAILABLE GUIDANCE... PARTICULARLY THE NAM... GFS... ECMWF...
AND CANADIAN RUNS. THE SREF MEAN IS SIMILAR TO THIS ENSEMBLE OF
DETERMINISTIC SOLUTIONS... ALTHOUGH IT IS FASTER AND SHOWS A MUCH
WIDER RANGE OF SOLUTIONS AMONG ITS INDIVIDUAL MEMBERSHIP WHICH
YIELDS SPREADS IN PCPN TOTALS WHICH ARE SIMILAR TO ITS MEAN VALUES
AND CORRESPONDINGLY VERY LOW PROBABILITIES FOR GREATER THAN 4 INCH
AMOUNTS.

BEFORE WE GET INTO THE DETAILS OF THE NEXT SYSTEM WE WILL FIRST
NEED TO CONTEND WITH THE ARCTIC BOUNDARY WHICH WILL DROP SOUTHEAST
THROUGH THE AREA TONIGHT INTO SUNDAY MORNING. AS MENTIONED
ABOVE... THERE IS VERY LITTLE IN THE WAY OF DEEP SATURATION WITH
THIS FEATURE AND MINIMAL FORCING... SO DIDN/T STRAY FAR FROM
PREVIOUS FORECAST... MENTIONING LOW CHANCE POPS ACROSS THE EAST
FOR TONIGHT. VERY COLD AIR WILL DROP IN BEHIND THE FRONT... WITH
TEMPERATURES HOLDING NEAR STEADY OR FALLING A BIT THROUGH THE DAY
ON SUNDAY. HOWEVER... WITH CLOUDS AND EVENTUALLY PCPN STREAMING IN
SUNDAY NIGHT WE SHOULDN/T SEE TEMPERATURES FALL MUCH AND IN FACT
THEY WILL LIKELY RISE A BIT SUNDAY NIGHT INTO MONDAY MORNING.

THE SYSTEM FOR SUNDAY NIGHT INTO MONDAY LOOKS TO BE A FAIRLY QUICK
HITTER WITH PCPN PROBABLY OCCURRING AT MOST LOCATIONS DURING A 6
HOUR WINDOW FROM WEST TO EAST BETWEEN 03Z AND 18Z MONDAY. FORCING
APPEARS TO BE PARTITIONED INTO TWO AREAS... WITH THE BEST LOW
LEVEL FRONTOGENESIS PRIMARILY STAYING TO OUR SOUTH AND EAST...
WHILE THE BEST UPPER LEVEL DIVERGENCE SLIDES ACROSS THE NORTHERN
AND CENTRAL PORTION OF OUR AREA. THE 280-285K ISENTROPIC SURFACES
ALSO SHOW MODEST UPGLIDE AS THE SYSTEM MOVES THROUGH... WITH
AROUND 2-3 G/KG MIXING RATIOS. THE CONSENSUS AMONGST THE MODELS IS
FOR 0.1 TO 0.25 INCHES OF PCPN IN AN EAST TO WEST SWATH ACROSS THE
CWFA... WHICH SHOULD WORK OUT TO 2 TO 5 INCHES OF SNOW GIVEN
FAIRLY DECENT SNOW RATIOS. A LITTLE MORE PCPN AND SLIGHTLY HIGHER
RATIOS COULD PUSH AMOUNTS TO NEAR WARNING CRITERIA... BUT AT THIS
POINT THAT DOES NOT APPEAR TO BE SUFFICIENTLY LIKELY TO WARRANT A
WATCH... PARTICULARLY SINCE IT WOULD LIKELY ONLY BE OVER A NARROW
AREA WHICH IS AT YET NOT CERTAIN. IF PROBABILITIES FROM THE SREF
WERE TO COME INTO BETTER AGREEMENT OR IF THE DETERMINISTIC RUNS
WERE TO SHOW A BIT MORE QPF THEN SOMETHING MAY NEED TO BE
CONSIDERED... BUT FOR NOW WILL SIMPLY INCLUDE 2 TO 5 INCH TOTALS
IN THE FORECAST AND ANTICIPATE THE NEED FOR AN ADVISORY DOWN THE
ROAD. A FEW OF THE CIPS ANALOGS DO SUGGEST SOME POTENTIAL FOR
HIGHER AMOUNTS... PARTICULARLY THE 5 MARCH 1995 ANALOG WHICH IS A
DECENT MATCH IN TERMS OF TRACK... ORIENTATION OF SNOW SWATH... AND
850MB TEMPERATURES. HOWEVER... IT APPEARS TO HAVE HAD A LONGER
DURATION OF PCPN WITH WHICH TO WORK... WHICH ULTIMATELY SEEMS TO
BE THE LIMITING FACTOR IN THIS CASE.

RIDGING WILL BUILD INTO THE AREA MONDAY NIGHT... BRINGING SNOW TO
AN END FROM WEST TO EAST... WITH A SUNNY BUT COLD DAY ON TAP FOR
TUESDAY. WITH FRESH SNOW COVER AND THE POSSIBILITY OF CLEAR SKIES
AND SLACKENING WINDS TUESDAY NIGHT... WE COULD SEE VERY COLD
TEMPERATURES ACROSS THE AREA. WENT SEVERAL DEGREES BELOW GUIDANCE
AT THIS POINT... BUT WOULDN/T BE SURPRISED IF THINGS NEED TO BE
PUSHED DOWN FURTHER AS WE GET CLOSER TO THAT TIME FRAME.

THE LATER PERIODS... WEDNESDAY THROUGH SATURDAY... LOOK FAIRLY QUIET
AT THIS POINT. FAIRLY ZONAL FLOW OVER THE NORTHERN TIER OF THE CONUS
ON WEDNESDAY WILL GIVE WAY TO RE-AMPLIFICATION BY SATURDAY... WITH
RIDGING ADVERTISED TO BUILD TO OUR WEST AND TROUGHING TO THE EAST.
NO SIGNIFICANT SYSTEMS ARE SUGGESTED TO IMPACT OUR AREA BY THE
GFS... ECMWF... CANADIAN OR RESPECTIVE ENSEMBLES. THE ONLY FEATURE
WHICH LOOKS TO AFFECT THE AREA WITH ANY PCPN WILL BE A SHORTWAVE
EMBEDDED IN NORTHWEST UPPER FLOW THAT WILL SWING THROUGH DURING THE
THURSDAY-FRIDAY TIME FRAME. THERE IS SOME DISAGREEMENT ON THE DEGREE
TO WHICH THIS FEATURE WILL DIG SOUTH... SO WHERE ITS SWATH OF PCPN
WILL WIND UP IS UNCERTAIN AT THIS POINT. THERE IS A WINDOW FOR SOME
MOISTURE RETURN OUT AHEAD OF IT... SO IT COULD AT LEAST BRING
ANOTHER ROUND OF ACCUMULATING SNOW... BUT WAY TOO EARLY TO TRY AND
FIGURE OUT ANY SPECIFICS. WILL INCLUDE CHANCE POPS FROM THURSDAY
INTO EARLY SATURDAY... PRIMARILY OVER THE NORTHERN AND EASTERN CWFA
FOR NOW. OTHERWISE... THERE LOOKS TO BE A SLIGHT WARMING TREND
DURING THE WEDNESDAY THROUGH SATURDAY TIME FRAME WITH PERHAPS A SHOT
OF SOME COOLER TEMPERATURES BEHIND THE SYSTEM AT THE END OF THE WEEK.

&&

.MPX WATCHES/WARNINGS/ADVISORIES...
MN...NONE.
WI...NONE.
&&

RAH/TRH
Hazardous weather outlook, Dec 12, 3:51 PM CST, 11 hours 28 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
351 PM CST SAT DEC 12 2009

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
132200-
DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS-
BENTON-SHERBURNE-ISANTI-CHISAGO-LAC QUI PARLE-SWIFT-CHIPPEWA-
KANDIYOHI-MEEKER-WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON-
YELLOW MEDICINE-RENVILLE-MCLEOD-SIBLEY-CARVER-SCOTT-DAKOTA-
REDWOOD-BROWN-NICOLLET-LE SUEUR-RICE-GOODHUE-WATONWAN-BLUE EARTH-
WASECA-STEELE-MARTIN-FARIBAULT-FREEBORN-POLK-BARRON-RUSK-
ST. CROIX-PIERCE-DUNN-PEPIN-EAU CLAIRE-
351 PM CST SAT DEC 12 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND
SOUTHERN MINNESOTA...AND WEST CENTRAL WISCONSIN.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THERE IS A SLIGHT CHANCE OF LIGHT FREEZING DRIZZLE AND LIGHT SNOW
TONIGHT FROM SOUTH CENTRAL MINNESOTA INTO WEST CENTRAL WISCONSIN.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THERE IS A CHANCE OF ACCUMULATING SNOWFALL ACROSS THE OUTLOOK
AREA ON SUNDAY NIGHT INTO MONDAY MORNING. SNOWFALL TOTALS OF 2 TO
5 INCHES APPEAR LIKELY ACROSS THE AREA... ALTHOUGH HIGHER AMOUNTS
MAY BE POSSIBLE... SO MONITOR LATER FORECASTS FOR UPDATES.

IT APPEARS THAT ANOTHER SURGE OF ARCTIC AIR WILL ARRIVE MONDAY
NIGHT INTO WEDNESDAY...AND BRING BRISK NORTHWEST WINDS AND VERY
COLD WIND CHILL READINGS.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION WILL NOT BE NEEDED.

TRH

Nearby

Winter Weather Advisories in Minnesota, 2009Winter Weather Advisories in Wisconsin, 2009Every winter weather advisory in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.