Alert archive / Minnesota / Winter Storm Warnings in 2020

Winter Storm Warning 3, NWS Twin Cities, MN

February 17, 2020Brown County, Nicollet County, Sibley County, Minnesota

NWS Twin Cities, MN issued this winter storm warning at Feb 17, 2020, 4:16 PM CST for Brown County, Nicollet County, Sibley County, Minnesota. It was in force for 5 hr. 12 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Feb 17, 2020, 4:16 PM CST (22:16 UTC)
Expired
Feb 17, 2020, 8:57 PM CST
In force
5 hr
Issued by
NWS Twin Cities, MN

Counties Brown County, MN, Nicollet County, MN, Sibley County, MN

The radar

The Minneapolis radar (KMPX), 84 km from the middle of the area, began a volume at 22:18 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.

What was reported inside it

TimeReportWhereRemark
Feb 17, 5:19 PM CSTSNOW 71 Ssw New Ulm, MN.
Feb 17, 5:19 PM CSTSNOW 71 Ssw New Ulm, MN
Feb 17, 6:30 PM CSTSNOW 10.4New Ulm, MN.
Feb 17, 6:30 PM CSTSNOW 10.4New Ulm, MN
Feb 17, 6:38 PM CSTSNOW 5.5Arlington, MN
Feb 17, 6:43 PM CSTSNOW 7.9St. Peter, MN
Feb 17, 7:10 PM CSTSNOW 9Courtland, MN
Feb 17, 7:15 PM CSTSNOW 2.51 N St. Peter, MN.
Feb 17, 7:15 PM CSTSNOW 2.51 N St. Peter, MN
Feb 17, 7:50 PM CSTSNOW 8.51 E Nicollet, MN
Feb 17, 8:11 PM CSTSNOW 5.5Winthrop, MN.
Feb 17, 8:11 PM CSTSNOW 5.5Winthrop, MN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.3 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 2020-02-17Temperature 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 2020-02-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 215 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
770 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
215 m²/s²
0-3 km storm-relative helicity
282 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

947 
WWUS43 KMPX 172216
WSWMPX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Twin Cities/Chanhassen MN
416 PM CST Mon Feb 17 2020

...Heavy Snow To Impact Travel Through the Evening...

.The slow moving system will produce snowfall rates of 1 to 2
inches per hour this afternoon and evening. A Winter Storm Warning
has been issued for Brown, Sibley, and Nicollet Counties, which 
will see a couple more hours of heavy snow, and could have 7 to 10
inches by the time the snow ends this evening.

Precipitation will expand farther to the northeast across east
central Minnesota this evening. It will also linger into the 
early evening as this system has slowed down a few hours.

A period of snow, occasionally heavy at times, will spread across
south central, and east central Minnesota, and into west central 
Wisconsin through the early evening. The snow will end by 9 PM in 
west central Wisconsin.

MNZ067-074-075-180300-
/O.NEW.KMPX.WS.W.0003.200217T2216Z-200218T0300Z/
Sibley-Brown-Nicollet-
Including the cities of Gaylord, New Ulm, and St Peter
416 PM CST Mon Feb 17 2020

...WINTER STORM WARNING IN EFFECT UNTIL 9 PM CST THIS EVENING...

* WHAT...Heavy snow. Total snow accumulations of 7 to 10 inches. 

* WHERE...Sibley, Brown and Nicollet Counties.

* WHEN...Until 9 PM CST this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

MNZ082-180300-
/O.EXA.KMPX.WW.Y.0011.000000T0000Z-200218T0300Z/
Watonwan-
Including the city of St James
416 PM CST Mon Feb 17 2020

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 9 PM CST THIS
EVENING...

* WHAT...Snow. Total accumulations of 3 to 5 inches.

* WHERE...Watonwan County.

* WHEN...Until 9 PM CST this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

MNZ069-070-076-077-083-084-091-092-180300-
/O.EXT.KMPX.WW.Y.0011.000000T0000Z-200218T0300Z/
Scott-Dakota-Le Sueur-Rice-Blue Earth-Waseca-Martin-Faribault-
Including the cities of Shakopee, Hastings, Le Sueur, Faribault, 
Mankato, Waseca, Fairmont, and Blue Earth
416 PM CST Mon Feb 17 2020

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 9 PM CST THIS
EVENING...

* WHAT...Snow accumulations of 1 to 4 inches.

* WHERE...Portions of south central Minnesota.

* WHEN...Until 9 PM CST this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

MNZ078-085-093-180300-
/O.CON.KMPX.WW.Y.0011.000000T0000Z-200218T0300Z/
Goodhue-Steele-Freeborn-
Including the cities of Red Wing, Owatonna, and Albert Lea
416 PM CST Mon Feb 17 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS
EVENING...

* WHAT...Total snow accumulations of 1 to 4 inches.

* WHERE...Steele, Freeborn and Goodhue Counties.

* WHEN...Until 9 PM CST this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WIZ024>028-180300-
/O.CON.KMPX.WW.Y.0011.000000T0000Z-200218T0300Z/
Pierce-Dunn-Pepin-Chippewa-Eau Claire-
Including the cities of River Falls, Prescott, Menomonie, Durand,
Chippewa Falls, and Eau Claire
416 PM CST Mon Feb 17 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS
EVENING...

* WHAT...Snow accumulations of 1 to 4 inches.

* WHERE...Pierce, Dunn and Chippewa Counties.

* WHEN...Until 9 PM CST this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

jrb
3 follow-up statements
805 
WWUS43 KMPX 172244
WSWMPX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Twin Cities/Chanhassen MN
444 PM CST Mon Feb 17 2020

...Heavy Snow To Impact Travel Through the Evening...

.The slow moving system will produce snowfall rates of 1 to
2 inches per hour this afternoon and evening. A Winter Storm
Warning has been issued for Brown, Sibley, and Nicollet Counties,
which will see a couple more hours of heavy snow, and could have
localized 7 to 10 inches by the time the snow ends this evening.

Periods of snow, occasionally heavy at times, will spread across 
south central, and east central Minnesota, and into west central 
Wisconsin through the early evening. Snowfall amounts of 2 to 4
inches may be common across the advisory area, with localized
amounts of around 6 inches possible. The snow will end by 9 PM in
west central Wisconsin.

MNZ067-074-075-180300-
/O.CON.KMPX.WS.W.0003.000000T0000Z-200218T0300Z/
Sibley-Brown-Nicollet-
Including the cities of Gaylord, New Ulm, and St Peter
444 PM CST Mon Feb 17 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM CST THIS
EVENING...

* WHAT...Heavy snow. Total snow accumulations of 6 to 10 inches,
  highest amounts highly localized.

* WHERE...Sibley, Brown and Nicollet Counties.

* WHEN...Until 9 PM CST this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

MNZ060-062-063-068-WIZ023-180300-
/O.EXA.KMPX.WW.Y.0011.000000T0000Z-200218T0300Z/
Hennepin-Ramsey-Washington-Carver-St. Croix-
Including the cities of Minneapolis, St Paul, Stillwater, Chaska,
and Hudson
444 PM CST Mon Feb 17 2020

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 9 PM CST THIS
EVENING...

* WHAT...Snow. Total snow accumulations of 2 to 4 inches, with
  localized amounts of up to around 6 inches possible.

* WHERE...In Wisconsin, St. Croix County. In Minnesota, 
  Hennepin, Ramsey, Washington and Carver Counties.

* WHEN...Until 9 PM CST this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

MNZ069-070-076>078-082>085-091>093-WIZ024>028-180300-
/O.CON.KMPX.WW.Y.0011.000000T0000Z-200218T0300Z/
Scott-Dakota-Le Sueur-Rice-Goodhue-Watonwan-Blue Earth-Waseca-
Steele-Martin-Faribault-Freeborn-Pierce-Dunn-Pepin-Chippewa-
Eau Claire-
Including the cities of Shakopee, Hastings, Le Sueur, Faribault, 
Red Wing, St James, Mankato, Waseca, Owatonna, Fairmont, 
Blue Earth, Albert Lea, River Falls, Prescott, Menomonie, Durand,
Chippewa Falls, and Eau Claire
444 PM CST Mon Feb 17 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS
EVENING...

* WHAT...Snow. Total snow accumulations of 2 to 4 inches, with
  localized amounts of up to around 6 inches possible.

* WHERE...Portions of west central Wisconsin and east central, 
  south central and southeast Minnesota.

* WHEN...Until 9 PM CST this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$
390 
WWUS43 KMPX 180036
WSWMPX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Twin Cities/Chanhassen MN
636 PM CST Mon Feb 17 2020

...Heavy Snow To Impact Travel Through the Evening...

.A slow moving band of snow moving eastward across eastern
Minnesota through western Wisconsin will produce snowfall rates 
of 1 to 2 inches per hour through early this evening. A Winter 
Storm Warning remains in effect for Sibley and Nicollet counties,
which will see a couple more hours of heavy snow, and could have 
localized 7 to 10 inches by the time the snow ends this evening.

East of the warning, from the Twin Cities metro south to the Iowa
border, periods of snow, occasionally heavy at times, will
continue to fall this evening. A Winter Weather Advisory remains
in effect for most areas along and east of a line from the Twin
Cities metro to Blue Earth. Snowfall amounts of 2 to 4 inches may
be common across the advisory area, with localized amounts of 
around 6 inches possible. The snow will end by 9 PM in west 
central Wisconsin.

MNZ074-180145-
/O.CAN.KMPX.WS.W.0003.000000T0000Z-200218T0300Z/
Brown-
Including the city of New Ulm
636 PM CST Mon Feb 17 2020

...WINTER STORM WARNING IS CANCELLED...

Heavy snowfall has ended across Brown county, with little to no
additional snow accumulation expected. Therefore the warning has 
been cancelled.

$$

MNZ082-091-180145-
/O.CAN.KMPX.WW.Y.0011.000000T0000Z-200218T0300Z/
Watonwan-Martin-
Including the cities of St James and Fairmont
636 PM CST Mon Feb 17 2020

...WINTER WEATHER ADVISORY IS CANCELLED...

Heavy snowfall has ended across Watonwan and Martin counties, 
with little to no additional snow accumulation expected. Therefore
the advisory has been cancelled.

$$

MNZ067-075-180300-
/O.CON.KMPX.WS.W.0003.000000T0000Z-200218T0300Z/
Sibley-Nicollet-
Including the cities of Gaylord and St Peter
636 PM CST Mon Feb 17 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM CST THIS
EVENING...

* WHAT...Heavy snow. Total snow accumulations of 5 to 7 inches,
  with highly localized amounts of up to 9 inches possible.

* WHERE...Sibley and Nicollet Counties.

* WHEN...Until 9 PM CST this evening.

* IMPACTS...Plan on slippery road conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

MNZ060-062-063-068>070-076>078-083>085-092-093-WIZ023>028-180300-
/O.CON.KMPX.WW.Y.0011.000000T0000Z-200218T0300Z/
Hennepin-Ramsey-Washington-Carver-Scott-Dakota-Le Sueur-Rice-
Goodhue-Blue Earth-Waseca-Steele-Faribault-Freeborn-St. Croix-
Pierce-Dunn-Pepin-Chippewa-Eau Claire-
Including the cities of Minneapolis, St Paul, Stillwater, Chaska,
Shakopee, Hastings, Le Sueur, Faribault, Red Wing, Mankato, 
Waseca, Owatonna, Blue Earth, Albert Lea, Hudson, River Falls, 
Prescott, Menomonie, Durand, Chippewa Falls, and Eau Claire
636 PM CST Mon Feb 17 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS
EVENING...

* WHAT...Snow. Total snow accumulations of 2 to 4 inches, with
  highly localized amounts of up to 6 inches possible.

* WHERE...Portions of west central Wisconsin and east central, 
  south central and southeast Minnesota.

* WHEN...Until 9 PM CST this evening.

* IMPACTS...Plan on slippery road conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$
997 
WWUS43 KMPX 180257
WSWMPX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Twin Cities/Chanhassen MN
857 PM CST Mon Feb 17 2020

...Snow Continues Across Western Wisconsin This Evening...

.A slow moving band of snow will advance eastward across eastern 
Minnesota through western Wisconsin over the next few hours. A 
Winter Weather Advisory remains in effect until midnight for 
areas south of the Twin Cities along I-35, and east into 
Wisconsin. Total snowfall amounts of 2 to 4 inches are likely in
the advisory area. The snow will taper off around midnight. If
traveling, expect slippery roads.

MNZ067-075-180400-
/O.CAN.KMPX.WS.W.0003.000000T0000Z-200218T0300Z/
Sibley-Nicollet-
Including the cities of Gaylord and St Peter
857 PM CST Mon Feb 17 2020

...WINTER STORM WARNING IS CANCELLED...

Snow has ended across the region but slippery roads may persist
overnight.

$$

MNZ060-062-063-068-069-076-083-084-092-180400-
/O.CAN.KMPX.WW.Y.0011.000000T0000Z-200218T0300Z/
Hennepin-Ramsey-Washington-Carver-Scott-Le Sueur-Blue Earth-
Waseca-Faribault-
Including the cities of Minneapolis, St Paul, Stillwater, Chaska,
Shakopee, Le Sueur, Mankato, Waseca, and Blue Earth
857 PM CST Mon Feb 17 2020

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow has ended across the region but slippery roads may persist
overnight.

$$

MNZ070-077-078-085-093-180600-
/O.EXT.KMPX.WW.Y.0011.000000T0000Z-200218T0600Z/
Dakota-Rice-Goodhue-Steele-Freeborn-
Including the cities of Hastings, Faribault, Red Wing, Owatonna, 
and Albert Lea
857 PM CST Mon Feb 17 2020

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

* WHAT...Snow. Total snow accumulations of 2 to 3 inches.

* WHERE...Portions of west central Wisconsin and east central, 
  south central and southeast Minnesota.

* WHEN...Until midnight CST tonight.

* IMPACTS...Plan on slippery road conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WIZ023>028-180600-
/O.EXT.KMPX.WW.Y.0011.000000T0000Z-200218T0600Z/
St. Croix-Pierce-Dunn-Pepin-Chippewa-Eau Claire-
Including the cities of Hudson, River Falls, Prescott, Menomonie,
Durand, Chippewa Falls, and Eau Claire
857 PM CST Mon Feb 17 2020

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

* WHAT...Snow. Total snow accumulations of 2 to 4 inches.

* WHERE...Portions of west central Wisconsin and east central, 
  south central and southeast Minnesota.

* WHEN...Until midnight CST tonight.

* IMPACTS...Plan on slippery road conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

jrb

Nearby

Winter Storm Warnings in Minnesota, 2020Every winter storm warning in 2020

Sources

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