Alert archive / Minnesota / Winter Storm Watches in 2012

Winter Storm Watch 1, NWS Twin Cities, MN

February 22, 201215 counties in Minnesota; Pepin County, Wisconsin

NWS Twin Cities, MN issued this winter storm watch at Feb 22, 2012, 11:50 AM CST for 15 counties in Minnesota; Pepin County, Wisconsin. It took effect at Feb 23, 2012, 3:00 AM CST. It was in force for .

The area

The counties it named.

The facts

Issued
Feb 22, 2012, 11:50 AM CST (17:50 UTC)
In effect from
Feb 23, 2012, 3:00 AM CST
Expired
Feb 22, 2012, 9:51 PM CST
In force
Issued by
NWS Twin Cities, MN

Counties Blue Earth County, MN, Brown County, MN, Faribault County, MN, Freeborn County, MN, Goodhue County, MN, Lac qui Parle County, MN, Le Sueur County, MN, Martin County, MN, Nicollet County, MN, Redwood County, MN, Rice County, MN, Steele County, MN, Waseca County, MN, Watonwan County, MN, Yellow Medicine County, MN, Pepin County, WI

The radar

The Minneapolis radar (KMPX), 82 km from the middle of the area, began a volume at 17:49 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 12:00Z, 5.8 hours before the alert went out and 81 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 12:00Z on 2012-02-22Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2012-02-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 square meters per square second.19395878Sfc1 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
1011 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
72 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.

359 
WWUS43 KMPX 221750
WSWMPX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1150 AM CST WED FEB 22 2012

...BAND OF HEAVY SNOW POSSIBLE IN SOUTHERN MINNESOTA TOMORROW...

.A WINTER STORM WATCH IS IN EFFECT FOR PORTIONS OF SOUTHERN
MINNESOTA AND PEPIN COUNTY IN WISCONSIN FROM EARLY THURSDAY
MORNING UNTIL LATE THURSDAY AFTERNOON. A SYSTEM WILL TRACK OUT OF
THE NORTHERN PLAINS AND DROP SOUTH ACROSS IOWA BY THURSDAY
AFTERNOON. THERE WILL BE A SWATH OF MODERATE TO HEAVY SNOW ON THE
NORTH SIDE OF THIS SYSTEM IN SOUTHERN MINNESOTA AND WESTERN
WISCONSIN. THIS SYSTEM LOOKS STRONGER THAN IT HAS OVER THE PAST
FEW DAYS...AND A BAND OF 4 TO 7 INCHES OF SNOW IS NOW A REAL
POSSIBILITY. IN FACT...AN EVEN HEAVIER BUT VERY NARROW BAND OF
SNOW BETWEEN 7 AND 10 INCHES IS POSSIBLE SOMEWHERE IN THE WATCH
AREA. HOPEFULLY SOMETIME TONIGHT WE WILL BE ABLE TO FOCUS IN ON
WHERE THE HEAVIEST AXIS OF SNOW WILL BE.

MNZ054-064-073>078-082>085-091>093-WIZ026-230200-
/O.NEW.KMPX.WS.A.0001.120223T0900Z-120224T0000Z/
LAC QUI PARLE-YELLOW MEDICINE-REDWOOD-BROWN-NICOLLET-LE SUEUR-
RICE-GOODHUE-WATONWAN-BLUE EARTH-WASECA-STEELE-MARTIN-FARIBAULT-
FREEBORN-PEPIN-
INCLUDING THE CITIES OF...MADISON...GRANITE FALLS...
REDWOOD FALLS...NEW ULM...ST. PETER...LE SUEUR...FARIBAULT...
RED WING...ST. JAMES...MANKATO...WASECA...OWATONNA...FAIRMONT...
BLUE EARTH...ALBERT LEA...DURAND...PEPIN
1150 AM CST WED FEB 22 2012

...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH
THURSDAY AFTERNOON...

THE NATIONAL WEATHER SERVICE IN TWIN CITIES/CHANHASSEN HAS ISSUED
A WINTER STORM WATCH...WHICH IS IN EFFECT FROM LATE TONIGHT
THROUGH THURSDAY AFTERNOON. 

* TIMING...SNOW DEVELOPS EARLY THURSDAY MORNING IN WESTERN
  MINNESOTA AND SLIDES EAST THROUGHOUT THE REMAINDER OF THE
  MORNING.

* MAIN IMPACT...A BAND OF 4 TO 7 INCHES OF SNOW NEAR AND SOUTH OF
  A LINE FROM CANBY...TO REDWOOD FALLS...TO OWATONNA. EMBEDDED IN
  THIS...THERE COULD BE A VERY NARROW BAND WITH 7 TO 10 INCHES OF
  SNOW.

* OTHER IMPACTS...SNOW COVERED ROADS COULD MAKE FOR DIFFICULT
  TRAVEL IN PORTIONS OF SOUTHERN MINNESOTA...INCLUDING THE
  INTERSTATE 90 CORRIDOR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$
FRANKS
2 follow-up statements
425 
WWUS43 KMPX 222206
WSWMPX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
406 PM CST WED FEB 22 2012

...WINTER STORM WATCH FOR PARTS OF SOUTH CENTRAL MINNESOTA 
   THURSDAY...

.A WINTER STORM WATCH IS IN EFFECT FOR PARTS OF SOUTH CENTRAL
MINNESOTA FROM EARLY THURSDAY MORNING THROUGH LATE THURSDAY
AFTERNOON. THE WATCH WAS MAINLY SOUTH AND WEST OF A LINE FROM
REDWOOD FALLS TO OWATONNA. 

A LOW PRESSURE SYSTEM OVER THE NORTHERN ROCKIES...WILL TRACK
SOUTHEAST OVER INTO NORTHERN IOWA BY THURSDAY AFTERNOON. THIS
SYSTEM WILL BRING A SWATH OF MODERATE TO HEAVY SNOW OVER PORTIONS
OF SOUTHERN MINNESOTA BY THURSDAY NIGHT. THERE IS THE POTENTIAL
FOR SNOW ACCUMULATIONS OF 6 INCHES OR MORE...MAINLY SOUTH OF
INTERSTATE 90 CORRIDOR. LIGHTER AMOUNTS OF SNOW ACCUMULATIONS WILL
OCCUR NORTH OF THE MINNESOTA RIVER VALLEY.

MNZ054-064-075>078-WIZ026-222315-
/O.CAN.KMPX.WS.A.0001.120223T0900Z-120224T0000Z/
LAC QUI PARLE-YELLOW MEDICINE-NICOLLET-LE SUEUR-RICE-GOODHUE-
PEPIN-
INCLUDING THE CITIES OF...MADISON...GRANITE FALLS...ST. PETER...
LE SUEUR...FARIBAULT...RED WING...DURAND...PEPIN
406 PM CST WED FEB 22 2012

...WINTER STORM WATCH IS CANCELLED...

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

THE NATIONAL WEATHER SERVICE HAS CANCELLED THE WINTER STORM WATCH
THAT WAS IN EFFECT FOR PORTIONS OF WEST CENTRAL AND EAST CENTRAL
MINNESOTA AND WEST CENTRAL WISCONSIN. 

THE LATEST INDICATIONS IS THAT THE SYSTEM WILL DEVELOP AND TRACK
FURTHER TO SOUTH AND WEST OF THIS AREA. 


$$

MNZ073-074-082>085-091>093-230615-
/O.CON.KMPX.WS.A.0001.120223T0900Z-120224T0000Z/
REDWOOD-BROWN-WATONWAN-BLUE EARTH-WASECA-STEELE-MARTIN-FARIBAULT-
FREEBORN-
INCLUDING THE CITIES OF...REDWOOD FALLS...NEW ULM...ST. JAMES...
MANKATO...WASECA...OWATONNA...FAIRMONT...BLUE EARTH...ALBERT LEA
406 PM CST WED FEB 22 2012

...WINTER STORM WATCH REMAINS IN EFFECT FROM 3 AM CST THURSDAY
THROUGH THURSDAY AFTERNOON...

* TIMING...SNOW DEVELOPS EARLY THURSDAY MORNING IN WESTERN 
  MINNESOTA AND SLIDES EAST THROUGHOUT THE REMAINDER OF THE 
  MORNING. 

* MAIN IMPACT...A BAND OF 4 TO 7 INCHES OF SNOW NEAR AND SOUTH OF
  A LINE FROM REDWOOD FALLS...TO OWATONNA. 

* OTHER IMPACTS...SNOW COVERED ROADS COULD MAKE FOR DIFFICULT 
  TRAVEL IN PORTIONS OF SOUTHERN MINNESOTA...INCLUDING THE 
  INTERSTATE 90 CORRIDOR. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$
721 
WWUS43 KMPX 230351
WSWMPX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
951 PM CST WED FEB 22 2012

...SNOW MOVING INTO PARTS OF SOUTH CENTRAL MINNESOTA THURSDAY...

.SNOW WILL DEVELOP AND SPREAD OVER PARTS OF SOUTHERN MINNESOTA
ON THURSDAY. SNOW ACCUMULATIONS OF 4 TO 6 INCHES ARE LIKELY MAINLY
SOUTH AND WEST OF THE INTERSTATE 90 CORRIDOR. THE NATIONAL WEATHER
SERVICE HAS CANCELLED THE WINTER STORM WATCH THAT WAS IN EFFECT
FOR PORTIONS OF SOUTH CENTRAL MINNESOTA...AND HAS REPLACED IT WITH
A WINTER WEATHER ADVISORY FOR SNOW. THIS ADVISORY INCLUDES THE
COUNTIES OF WATONWAN...MARTIN...FARIBAULT AND FREEBORN. 
UNTREATED ROADS AND HIGHWAYS WILL BECOME VERY SLIPPERY AND SNOW
COVERED. THIS WILL LIKELY MAKE TRAVEL DIFFICULT ESPECIALLY DURING
THE DAY ON THURSDAY.

A LOW PRESSURE SYSTEM OVER THE NORTHERN ROCKIES...WILL TRACK
SOUTHEAST OVER NORTHEAST IOWA BY THURSDAY EVENING. THIS SYSTEM
WILL BRING A SWATH OF SNOW TO PARTS OF SOUTHWEST MINNESOTA AND
ADJACENT AREAS OF SOUTH DAKOTA AND IOWA BEFORE MOVING OVER THE
LOWER GREAT LAKES THURSDAY NIGHT.

THE LATEST COMPUTER MODELS AND OBSERVATIONS CONTINUE TO TREND THE
WINTER STORM SOUTH THEN PREVIOUS PREDICTIONS. 



MNZ073-074-083>085-230500-
/O.CAN.KMPX.WS.A.0001.120223T0900Z-120224T0000Z/
REDWOOD-BROWN-BLUE EARTH-WASECA-STEELE-
INCLUDING THE CITIES OF...REDWOOD FALLS...NEW ULM...MANKATO...
WASECA...OWATONNA
951 PM CST WED FEB 22 2012

...WINTER STORM WATCH IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN TWIN CITIES/CHANHASSEN HAS
CANCELLED THE WINTER STORM WATCH. THE LATEST COMPUTER MODELS 
AND OBSERVATIONS CONTINUE TO TREND THE WINTER STORM SOUTH THEN
PREVIOUS PREDICTIONS.

THE WATCH HAS BEEN REPLACED WITH A WINTER WEATHER ADVISORY FOR
PARTS OF SOUTH CENTRAL MINNESOTA...MAINLY SOUTH OF A LINE FROM
SAINT JAMES TO ALBERT LEA.


$$

MNZ082-091>093-231200-
/O.UPG.KMPX.WS.A.0001.120223T0900Z-120224T0000Z/
/O.NEW.KMPX.WW.Y.0004.120223T1200Z-120224T0000Z/
WATONWAN-MARTIN-FARIBAULT-FREEBORN-
INCLUDING THE CITIES OF...ST. JAMES...FAIRMONT...BLUE EARTH...
ALBERT LEA
951 PM CST WED FEB 22 2012

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM TO 6 PM CST
THURSDAY...

THE NATIONAL WEATHER SERVICE IN TWIN CITIES/CHANHASSEN HAS ISSUED
A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 6 AM
TO 6 PM CST THURSDAY. THE WINTER STORM WATCH IS NO LONGER IN
EFFECT.

* TIMING...SNOW DEVELOPS IN THE MORNING...AND CONTINUING
  THROUGHOUT MUCH OF THE DAY. 

* MAIN IMPACT...A BAND OF 4 TO 6 INCHES OF SNOW...MAINLY SOUTH OF
  A LINE FROM SAINT JAMES TO ALBERT LEA. 

* OTHER IMPACTS...SNOW COVERED ROADS COULD MAKE FOR DIFFICULT 
  TRAVEL IN PORTIONS OF SOUTHERN MINNESOTA...INCLUDING THE 
  INTERSTATE 90 CORRIDOR. 

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.


$$

Nearby

Winter Storm Watches in Minnesota, 2012Winter Storm Watches in Wisconsin, 2012Every winter storm watch in 2012

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.