Winter Storm Watch 2, NWS Sioux Falls, SD

Buena Vista County, IA, Cherokee County, IA, Clay County, IA, Dickinson County, IA, Ida County, IA, Lyon County, IA, O'Brien County, IA, Osceola County, IA, Plymouth County, IA, Sioux County, IA, Woodbury County, IA, Cottonwood County, MN, Jackson County, MN, Lincoln County, MN, Lyon County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN, Rock County, MN, Dakota County, NE, Dixon County, NE, Aurora County, SD, Bon Homme County, SD, Brookings County, SD, Brule County, SD, Charles Mix County, SD, Clay County, SD, Davison County, SD, Douglas County, SD, Gregory County, SD, Hanson County, SD, Hutchinson County, SD, Jerauld County, SD, Lake County, SD, Lincoln County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Sanborn County, SD, Turner County, SD, Union County, SD, Yankton County, SD

215 
WWUS43 KFSD 191656
WSWFSD

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sioux Falls SD
1056 AM CST Fri Jan 19 2018


SDZ050-053-054-058>060-063>065-068-200300-
/O.CON.KFSD.WS.A.0002.180121T1200Z-180122T1800Z/
Gregory-Sanborn-Miner-Aurora-Davison-Hanson-Charles Mix-Douglas-
Hutchinson-Bon Homme-
1056 AM CST Fri Jan 19 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY MORNING
THROUGH MONDAY MORNING...

* WHAT...Heavy snow possible. Plan on difficult travel 
  conditions. Total snow accumulations of 5 to 8 inches are 
  possible.

* WHERE...Portions of east central, south central and southeast 
  South Dakota.

* WHEN...From Sunday morning through Monday morning.

* ADDITIONAL DETAILS...Significant reductions in visibility are 
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

IAZ020-031-NEZ013-014-SDZ040-055-056-061-062-066-067-069>071-
200300-
/O.CON.KFSD.WS.A.0002.180121T2100Z-180122T1800Z/
Plymouth-Woodbury-Dixon-Dakota-Brookings-Lake-Moody-McCook-
Minnehaha-Turner-Lincoln SD-Yankton-Clay SD-Union-
1056 AM CST Fri Jan 19 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON
THROUGH MONDAY MORNING...

* WHAT...Heavy snow possible at times, especially Sunday night and
  Monday morning. There could be a light wintry mix late Sunday
  afternoon and early evening. Plan on difficult travel
  conditions. Total snow accumulations of 5 to 8 inches Sunday
  night and Monday, with a possible very light glaze of
  precipitation toward early evening Sunday.

* WHERE...Portions of east central and southeast South Dakota, 
  northeast Nebraska and northwest and west central Iowa.

* WHEN...From Sunday afternoon through Monday morning.

* ADDITIONAL DETAILS...Significant reductions in visibility are 
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

IAZ001>003-012-013-MNZ071-072-080-081-089-090-097-098-200300-
/O.CON.KFSD.WS.A.0002.180122T0000Z-180122T2100Z/
Lyon IA-Osceola-Dickinson-Sioux-O'Brien-Lincoln MN-Lyon MN-Murray-
Cottonwood-Nobles-Jackson-Pipestone-Rock-
1056 AM CST Fri Jan 19 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY EVENING
THROUGH MONDAY AFTERNOON...

* WHAT...Heavy snow possible. Plan on difficult travel 
  conditions. Total snow accumulations of 5 to 8 inches are 
  possible.

* WHERE...Portions of northwest Iowa and southwest Minnesota.

* WHEN...From Sunday evening through Monday afternoon.

* ADDITIONAL DETAILS...Significant reductions in visibility are 
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

708 
WWUS43 KFSD 192105
WSWFSD

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sioux Falls SD
305 PM CST Fri Jan 19 2018

 
IAZ014-021-200515-
/O.EXB.KFSD.WS.A.0002.180122T0000Z-180123T0000Z/
Clay IA-Cherokee-
305 PM CST Fri Jan 19 2018

...WINTER STORM WATCH IN EFFECT FROM SUNDAY EVENING THROUGH
MONDAY AFTERNOON...

* WHAT...Heavy mixed precipitation possible. Plan on difficult 
  travel conditions, including during the morning commute on 
  Monday. Total snow accumulations of 4 to 7 inches, with 
  localized amounts up to 9 inches, and ice accumulations of a 
  light glaze are possible.

* WHERE...Clay IA and Cherokee Counties.

* WHEN...From Sunday evening through Monday afternoon.

* ADDITIONAL DETAILS...Significant reductions in visibility are 
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

IAZ001>003-012-013-MNZ071-072-080-081-089-090-097-098-200515-
/O.EXT.KFSD.WS.A.0002.180122T0000Z-180123T0000Z/
Lyon IA-Osceola-Dickinson-Sioux-O'Brien-Lincoln MN-Lyon MN-Murray-
Cottonwood-Nobles-Jackson-Pipestone-Rock-
305 PM CST Fri Jan 19 2018

...WINTER STORM WATCH NOW IN EFFECT FROM SUNDAY EVENING THROUGH
MONDAY AFTERNOON...

* WHAT...Heavy snow possible. Travel will be very difficult to 
  impossible, including during the morning commute on Monday. 
  Total snow accumulations of 7 to 10 inches, with localized 
  amounts up to 12 inches, are possible.

* WHERE...Portions of northwest Iowa and southwest Minnesota.

* WHEN...From Sunday evening through Monday afternoon.

* ADDITIONAL DETAILS...Significant reductions in visibility are 
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

SDZ050-053-054-058>060-063>065-068-200515-
/O.CON.KFSD.WS.A.0002.180121T1200Z-180122T1800Z/
Gregory-Sanborn-Miner-Aurora-Davison-Hanson-Charles Mix-Douglas-
Hutchinson-Bon Homme-
305 PM CST Fri Jan 19 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY MORNING
THROUGH MONDAY MORNING...

* WHAT...Heavy snow possible. Plan on difficult travel conditions.
  Total snow accumulations of 4 to 7 inches, with localized
  amounts up to 9 inches, are possible.

* WHERE...Portions of east central, south central and southeast 
  South Dakota.

* WHEN...From Sunday morning through Monday morning.

* ADDITIONAL DETAILS...Significant reductions in visibility are 
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

IAZ020-031-NEZ013-014-SDZ040-055-056-061-062-066-067-069>071-
200515-
/O.CON.KFSD.WS.A.0002.180121T2100Z-180122T1800Z/
Plymouth-Woodbury-Dixon-Dakota-Brookings-Lake-Moody-McCook-
Minnehaha-Turner-Lincoln SD-Yankton-Clay SD-Union-
305 PM CST Fri Jan 19 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON
THROUGH MONDAY MORNING...

* WHAT...Heavy snow possible. Plan on difficult travel 
  conditions, including during the morning commute on Monday. 
  Total snow accumulations of 6 to 9 inches, with localized 
  amounts up to 11 inches, are possible.

* WHERE...Portions of east central and southeast South Dakota, 
  northeast Nebraska and northwest and west central Iowa.

* WHEN...From Sunday afternoon through Monday morning.

* ADDITIONAL DETAILS...Significant reductions in visibility are 
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

499 
WWUS43 KFSD 200242
WSWFSD

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sioux Falls SD
842 PM CST Fri Jan 19 2018


SDZ050-053-054-058>060-063>065-068-201045-
/O.CON.KFSD.WS.A.0002.180121T1200Z-180122T1800Z/
Gregory-Sanborn-Miner-Aurora-Davison-Hanson-Charles Mix-Douglas-
Hutchinson-Bon Homme-
842 PM CST Fri Jan 19 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY MORNING
THROUGH MONDAY MORNING...

* WHAT...Heavy snow possible. Plan on difficult travel 
  conditions. Total snow accumulations of 4 to 7 inches, with 
  localized amounts up to 9 inches, are possible.

* WHERE...Portions of east central, south central and southeast 
  South Dakota.

* WHEN...From Sunday morning through Monday morning.

* ADDITIONAL DETAILS...Significant reductions in visibility are 
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

IAZ020-031-NEZ013-014-SDZ040-055-056-061-062-066-067-069>071-
201045-
/O.CON.KFSD.WS.A.0002.180121T2100Z-180122T1800Z/
Plymouth-Woodbury-Dixon-Dakota-Brookings-Lake-Moody-McCook-
Minnehaha-Turner-Lincoln SD-Yankton-Clay SD-Union-
842 PM CST Fri Jan 19 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON
THROUGH MONDAY MORNING...

* WHAT...Heavy snow possible. Plan on difficult travel 
  conditions, including during the morning commute on Monday. 
  Total snow accumulations of 6 to 9 inches, with localized 
  amounts up to 11 inches, are possible.

* WHERE...Portions of east central and southeast South Dakota, 
  northeast Nebraska and northwest and west central Iowa.

* WHEN...From Sunday afternoon through Monday morning.

* ADDITIONAL DETAILS...Significant reductions in visibility are 
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

IAZ001>003-012>014-021-MNZ071-072-080-081-089-090-097-098-201045-
/O.CON.KFSD.WS.A.0002.180122T0000Z-180123T0000Z/
Lyon IA-Osceola-Dickinson-Sioux-O'Brien-Clay IA-Cherokee-
Lincoln MN-Lyon MN-Murray-Cottonwood-Nobles-Jackson-Pipestone-
Rock-
842 PM CST Fri Jan 19 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY EVENING
THROUGH MONDAY AFTERNOON...

* WHAT...Heavy snow possible. Travel will be very difficult to 
  impossible, including during the morning commute on Monday. 
  Total snow accumulations of 7 to 10 inches, with localized 
  amounts up to 12 inches, are possible.

* WHERE...Portions of northwest Iowa and southwest Minnesota.

* WHEN...From Sunday evening through Monday afternoon.

* ADDITIONAL DETAILS...Significant reductions in visibility are 
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

584 
WWUS43 KFSD 201006
WSWFSD

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sioux Falls SD
406 AM CST Sat Jan 20 2018

SDZ052-057-201815-
/O.EXA.KFSD.WS.A.0002.180121T1200Z-180122T1800Z/
Jerauld-Brule-
406 AM CST Sat Jan 20 2018

...WINTER STORM WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
MONDAY MORNING...

* WHAT...Heavy snow possible at times, especially Sunday afternoon
  and night. Plan on difficult travel conditions. Total snow
  accumulations of 5 to 7 inches are possible.

* WHERE...Jerauld and Brule Counties.

* WHEN...Sunday through Monday morning.

* ADDITIONAL DETAILS...Significant reductions in visibility are
  possible Sunday night with northwest winds of 20 to 35 mph.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

IAZ020-031-NEZ013-014-SDZ040-054>056-059>062-065>071-201815-
/O.EXT.KFSD.WS.A.0002.180121T2100Z-180123T0000Z/
Plymouth-Woodbury-Dixon-Dakota-Brookings-Miner-Lake-Moody-Davison-
Hanson-McCook-Minnehaha-Hutchinson-Turner-Lincoln SD-Bon Homme-
Yankton-Clay SD-Union-
406 AM CST Sat Jan 20 2018

...WINTER STORM WATCH NOW IN EFFECT FROM SUNDAY AFTERNOON THROUGH
MONDAY AFTERNOON...

* WHAT...Blizzard conditions possible. Travel could be very
  difficult to impossible, including during the morning commute on
  Monday. Total snow accumulations of 6 to 10 inches are possible,
  with localized amounts up to 11 inches. 

* WHERE...Portions of east central and southeast South Dakota, 
  northeast Nebraska and northwest and west central Iowa.

* WHEN...From late Sunday afternoon through Monday.

* ADDITIONAL DETAILS...Winds of 25 to 40 mph could cause whiteout
  conditions in blowing snow beginning Sunday night and lasting
  through the day on Monday. The worst visibilities will be
  outside city limits. Significant drifting of snow is also 
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch for blizzard conditions means there is a
potential for falling and/or blowing snow with strong winds and
extremely poor visibilities. This can lead to whiteout conditions
and make travel very dangerous.

$$

IAZ001>003-012>014-021-MNZ071-072-080-081-089-090-097-098-201815-
/O.EXT.KFSD.WS.A.0002.180122T0000Z-180123T0600Z/
Lyon IA-Osceola-Dickinson-Sioux-O'Brien-Clay IA-Cherokee-
Lincoln MN-Lyon MN-Murray-Cottonwood-Nobles-Jackson-Pipestone-
Rock-
406 AM CST Sat Jan 20 2018

...WINTER STORM WATCH NOW IN EFFECT FROM SUNDAY EVENING THROUGH
MONDAY EVENING...

* WHAT...Blizzard conditions possible. Travel could be very
  difficult to impossible, including during the morning commute on
  Monday. Total snow accumulations of 7 to 10 inches are possible.
  Localized amounts up to 12 inches are possible in southwest
  Minnesota. Ice accumulations of a light glaze could occur Sunday
  night in northwest Iowa and toward Interstate 90 in southwest
  Minnesota.  

* WHERE...Portions of northwest Iowa and southwest Minnesota.

* WHEN...From Sunday evening through Monday evening.

* ADDITIONAL DETAILS...Winds of 25 to 40 mph could cause whiteout
  conditions in blowing snow beginning overnight Sunday night and
  lasting through Monday evening. The worst visibilities will be
  outside city limits. Significant drifting of snow is also 
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch for blizzard conditions means there is a
potential for falling and/or blowing snow with strong winds and
extremely poor visibilities. This can lead to whiteout conditions
and make travel very dangerous.

$$

SDZ050-053-058-063-064-201815-
/O.CON.KFSD.WS.A.0002.180121T1200Z-180122T1800Z/
Gregory-Sanborn-Aurora-Charles Mix-Douglas-
406 AM CST Sat Jan 20 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY MORNING
THROUGH MONDAY MORNING...

* WHAT...Heavy snow possible. Plan on difficult travel conditions,
  including during the morning commute on Monday. Total snow
  accumulations of 6 to 9 inches possible. Localized amounts up to
  11 inches possible near the Nebraska border.

* WHERE...Gregory, Sanborn, Aurora, Charles Mix and Douglas 
  Counties.

* WHEN...Sunday through Monday morning.

* ADDITIONAL DETAILS...Significant reductions in visibility are
  possible Sunday night with northwest winds of 20 to 35 mph.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

985 
WWUS43 KFSD 202054
WSWFSD

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sioux Falls SD
254 PM CST Sat Jan 20 2018

IAZ001>003-012>014-MNZ080-081-089-090-097-098-210500-
/O.UPG.KFSD.WS.A.0002.180122T0000Z-180123T0600Z/
/O.NEW.KFSD.WS.W.0001.180122T0000Z-180123T0600Z/
Lyon IA-Osceola-Dickinson-Sioux-O'Brien-Clay IA-Murray-Cottonwood-
Nobles-Jackson-Pipestone-Rock-
254 PM CST Sat Jan 20 2018

...WINTER STORM WARNING IN EFFECT FROM 6 PM SUNDAY TO MIDNIGHT
CST MONDAY NIGHT...

* WHAT...Heavy snow expected with blizzard conditions possible.
  Mixed precipitation possible in northwest Iowa. Travel will be
  very difficult to impossible, including during the morning and
  evening commutes on Monday. Total snow accumulations of 8 to 14
  inches, with localized amounts up to 17 inches are expected. 
  Ice accumulations up to one tenth are possible in northwest 
  Iowa. 

* WHERE...Portions of northwest Iowa and southwest Minnesota.

* WHEN...From 6 PM Sunday to midnight CST Monday night.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph could cause
  near blizzard conditions in blowing snow. Significant drifting
  of the snow is also expected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are expected. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

IAZ020-NEZ013-SDZ062-065>071-210500-
/O.UPG.KFSD.WS.A.0002.180121T2100Z-180123T0000Z/
/O.NEW.KFSD.WS.W.0001.180122T0000Z-180123T0000Z/
Plymouth-Dixon-Minnehaha-Hutchinson-Turner-Lincoln SD-Bon Homme-
Yankton-Clay SD-Union-
254 PM CST Sat Jan 20 2018

...WINTER STORM WARNING IN EFFECT FROM 6 PM SUNDAY TO 6 PM CST
MONDAY...

* WHAT...Heavy snow expected with blizzard conditions possible.
  Mixed precipitation possible south of Highway 18. Travel will 
  be very difficult to impossible, including during the morning 
  commute on Monday. Total snow accumulations of 8 to 14 inches, 
  with localized amounts up to 16 inches, are expected. Ice 
  accumulations of a light glaze are possible south of Highway 18.

* WHERE...Portions of southeast South Dakota, northeast Nebraska 
  and northwest Iowa.

* WHEN...From 6 PM Sunday to 6 PM CST Monday.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph could 
  cause near blizzard conditions in blowing snow. Significant 
  drifting of the snow is also expected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are expected. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

SDZ050-063-064-210500-
/O.UPG.KFSD.WS.A.0002.180121T1200Z-180122T1800Z/
/O.NEW.KFSD.WS.W.0001.180121T1200Z-180122T1800Z/
Gregory-Charles Mix-Douglas-
254 PM CST Sat Jan 20 2018

...WINTER STORM WARNING IN EFFECT FROM 6 AM SUNDAY TO NOON CST
MONDAY...

* WHAT...Heavy snow expected at times. Plan on difficult travel 
  conditions, including during the morning commute on Monday. 
  Total snow accumulations of 5 to 8 inches, with localized 
  amounts up to 10 inches, are expected.

* WHERE...Gregory, Charles Mix and Douglas Counties.

* WHEN...From 6 AM Sunday to noon CST Monday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are expected. 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.

$$

IAZ022-032-210500-
/O.EXA.KFSD.WS.A.0002.180122T0000Z-180123T0600Z/
Buena Vista-Ida-
254 PM CST Sat Jan 20 2018

...WINTER STORM WATCH IN EFFECT FROM SUNDAY EVENING THROUGH
MONDAY EVENING...

* WHAT...Blizzard conditions possible. Travel could be very
  difficult to impossible, including during the morning and
  evening commutes on Monday. Total snow accumulations of 2 to 4 
  inches, with localized amounts up to 6 inches, and ice 
  accumulations of one tenth to two tenths of an inch are 
  possible.

* WHERE...Buena Vista and Ida Counties.

* WHEN...From Sunday evening through Monday evening.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph could 
  cause whiteout conditions in blowing snow. Significant 
  drifting of the snow is also possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch for blizzard conditions means there is a
potential for falling and/or blowing snow with strong winds and
extremely poor visibilities. This can lead to whiteout conditions
and make travel very dangerous.

$$

IAZ031-NEZ014-SDZ040-054>056-059>061-210500-
/O.EXT.KFSD.WS.A.0002.180122T0000Z-180123T0000Z/
Woodbury-Dakota-Brookings-Miner-Lake-Moody-Davison-Hanson-McCook-
254 PM CST Sat Jan 20 2018

...WINTER STORM WATCH NOW IN EFFECT FROM SUNDAY EVENING THROUGH
MONDAY AFTERNOON...

* WHAT...Blizzard conditions possible. Travel could be very
  difficult to impossible, including during the morning commute 
  on Monday. Total snow accumulations of 4 to 7 inches, with 
  localized amounts up to 10 inches. Ice accumulations of a light 
  glaze are possible in northeast Nebraska and west central Iowa.

* WHERE...Portions of east central and southeast South Dakota, 
  northeast Nebraska and west central Iowa.

* WHEN...From Sunday evening through Monday afternoon.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph could 
  cause whiteout conditions in blowing snow. Significant 
  drifting of the snow is also possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch for blizzard conditions means there is a
potential for falling and/or blowing snow with strong winds and
extremely poor visibilities. This can lead to whiteout conditions
and make travel very dangerous.

$$

SDZ052-053-057-058-210500-
/O.CON.KFSD.WS.A.0002.180121T1200Z-180122T1800Z/
Jerauld-Sanborn-Brule-Aurora-
254 PM CST Sat Jan 20 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY MORNING
THROUGH MONDAY MORNING...

* WHAT...Heavy snow possible. Plan on difficult travel 
  conditions, including during the morning commute on Monday. 
  Total snow accumulations of 3 to 5 inches, with localized 
  amounts up to 7 inches, are possible.

* WHERE...Jerauld, Sanborn, Brule and Aurora Counties.

* WHEN...From Sunday morning through Monday morning.

* ADDITIONAL DETAILS...Significant reductions in visibility are 
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

IAZ021-MNZ071-072-210500-
/O.CON.KFSD.WS.A.0002.180122T0000Z-180123T0600Z/
Cherokee-Lincoln MN-Lyon MN-
254 PM CST Sat Jan 20 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY EVENING
THROUGH MONDAY EVENING...

* WHAT...Blizzard conditions possible. Travel could be very
  difficult to impossible, including during the morning commute 
  on Monday. Total snow accumulations of 5 to 8 inches, with 
  localized amounts up to 11 inches, and ice accumulations of 
  around one tenth are possible.

* WHERE...In Iowa, Cherokee County. In Minnesota, Lincoln MN and 
  Lyon MN Counties.

* WHEN...From Sunday evening through Monday evening.

* ADDITIONAL DETAILS...Winds gusting as high as 35 mph could 
  cause whiteout conditions in blowing snow. Significant 
  drifting of the snow is also possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch for blizzard conditions means there is a
potential for falling and/or blowing snow with strong winds and
extremely poor visibilities. This can lead to whiteout conditions
and make travel very dangerous.

$$

952 
WWUS43 KFSD 210302
WSWFSD

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sioux Falls SD
902 PM CST Sat Jan 20 2018

IAZ001>003-012>014-MNZ080-081-089-090-097-098-211115-
/O.CON.KFSD.WS.W.0001.180122T0000Z-180123T0600Z/
Lyon IA-Osceola-Dickinson-Sioux-O'Brien-Clay IA-Murray-Cottonwood-
Nobles-Jackson-Pipestone-Rock-
902 PM CST Sat Jan 20 2018

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM SUNDAY TO
MIDNIGHT CST MONDAY NIGHT...

* WHAT...Heavy snow expected with blizzard conditions possible. 
  Mixed precipitation possible in northwest Iowa. Travel will be 
  very difficult to impossible, including during the morning and 
  evening commutes on Monday. Total snow accumulations of 8 to 
  14 inches, with localized amounts up to 17 inches are 
  expected. Ice accumulations up to one tenth are possible in 
  northwest Iowa.

* WHERE...Portions of northwest Iowa and southwest Minnesota.

* WHEN...From 6 PM Sunday to midnight CST Monday night.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph could 
  cause near blizzard conditions in blowing snow. Significant 
  drifting of the snow is also expected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are expected. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

IAZ020-NEZ013-SDZ062-065>071-211115-
/O.CON.KFSD.WS.W.0001.180122T0000Z-180123T0000Z/
Plymouth-Dixon-Minnehaha-Hutchinson-Turner-Lincoln SD-Bon Homme-
Yankton-Clay SD-Union-
902 PM CST Sat Jan 20 2018

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM SUNDAY TO
6 PM CST MONDAY...

* WHAT...Heavy snow expected with blizzard conditions possible. 
  Mixed precipitation possible south of Highway 18. Travel will 
  be very difficult to impossible, including during the morning 
  commute on Monday. Total snow accumulations of 8 to 14 inches, 
  with localized amounts up to 16 inches, are expected. Ice 
  accumulations of a light glaze are possible south of Highway 
  18.

* WHERE...Portions of southeast South Dakota, northeast Nebraska 
  and northwest Iowa.

* WHEN...From 6 PM Sunday to 6 PM CST Monday.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph could 
  cause near blizzard conditions in blowing snow. Significant 
  drifting of the snow is also expected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice are expected. This will make travel very hazardous or
impossible. The latest road conditions for the state you are
calling from can be obtained by calling 5 1 1.

$$

SDZ050-063-064-211115-
/O.CON.KFSD.WS.W.0001.180121T1200Z-180122T1800Z/
Gregory-Charles Mix-Douglas-
902 PM CST Sat Jan 20 2018

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 AM SUNDAY TO
NOON CST MONDAY...

* WHAT...Heavy snow expected at times. Plan on difficult travel 
  conditions, including during the morning commute on Monday. 
  Total snow accumulations of 5 to 8 inches, with localized 
  amounts up to 10 inches, are expected.

* WHERE...Gregory, Charles Mix and Douglas Counties.

* WHEN...From 6 AM Sunday to noon CST Monday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are expected. 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.

$$

SDZ052-053-057-058-211115-
/O.CON.KFSD.WS.A.0002.180121T1200Z-180122T1800Z/
Jerauld-Sanborn-Brule-Aurora-
902 PM CST Sat Jan 20 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM 6 AM CST SUNDAY
THROUGH MONDAY MORNING...

* WHAT...Heavy snow possible. Plan on difficult travel 
  conditions, including during the morning commute on Monday. 
  Total snow accumulations of 3 to 5 inches, with localized 
  amounts up to 7 inches, are possible.

* WHERE...Jerauld, Sanborn, Brule and Aurora Counties.

* WHEN...From Sunday morning through Monday morning.

* ADDITIONAL DETAILS...Significant reductions in visibility are 
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch means there is potential for significant
snow, sleet or ice accumulations that may impact travel. Continue
to monitor the latest forecasts.

$$

IAZ031-NEZ014-SDZ040-054>056-059>061-211115-
/O.CON.KFSD.WS.A.0002.180122T0000Z-180123T0000Z/
Woodbury-Dakota-Brookings-Miner-Lake-Moody-Davison-Hanson-McCook-
902 PM CST Sat Jan 20 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY EVENING
THROUGH MONDAY AFTERNOON...

* WHAT...Blizzard conditions possible. Travel could be very 
  difficult to impossible, including during the morning commute 
  on Monday. Total snow accumulations of 4 to 7 inches, with 
  localized amounts up to 10 inches. Ice accumulations of a 
  light glaze are possible in northeast Nebraska and west 
  central Iowa.

* WHERE...Portions of east central and southeast South Dakota, 
  northeast Nebraska and west central Iowa.

* WHEN...From Sunday evening through Monday afternoon.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph could 
  cause whiteout conditions in blowing snow. Significant 
  drifting of the snow is also possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch for blizzard conditions means there is a
potential for falling and/or blowing snow with strong winds and
extremely poor visibilities. This can lead to whiteout conditions
and make travel very dangerous.

$$

IAZ021-022-032-MNZ071-072-211115-
/O.CON.KFSD.WS.A.0002.180122T0000Z-180123T0600Z/
Cherokee-Buena Vista-Ida-Lincoln MN-Lyon MN-
902 PM CST Sat Jan 20 2018

...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY EVENING
THROUGH MONDAY EVENING...

* WHAT...Blizzard conditions possible. Travel could be very 
  difficult to impossible, including during the morning commute 
  on Monday. Total snow accumulations of 5 to 8 inches, with 
  localized amounts up to 11 inches, and ice accumulations of 
  around one tenth are possible.

* WHERE...In Iowa, Cherokee County. In Minnesota, Lincoln MN and 
  Lyon MN Counties.

* WHEN...From Sunday evening through Monday evening.

* ADDITIONAL DETAILS...Winds gusting as high as 35 mph could 
  cause whiteout conditions in blowing snow. Significant 
  drifting of the snow is also possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Watch for blizzard conditions means there is a
potential for falling and/or blowing snow with strong winds and
extremely poor visibilities. This can lead to whiteout conditions
and make travel very dangerous.

$$

386 
WWUS43 KFSD 210941
WSWFSD

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sioux Falls SD
341 AM CST Sun Jan 21 2018


IAZ020-NEZ013-SDZ067-069>071-211945-
/O.UPG.KFSD.WS.W.0001.180122T0000Z-180123T0000Z/
/O.NEW.KFSD.BZ.W.0001.180122T0300Z-180123T0600Z/
Plymouth-Dixon-Lincoln SD-Yankton-Clay SD-Union-
341 AM CST Sun Jan 21 2018

...BLIZZARD WARNING IN EFFECT FROM 9 PM THIS EVENING TO MIDNIGHT
CST MONDAY NIGHT...

* WHAT...Blizzard conditions expected. Travel will be very
  dangerous to impossible, including during the morning commute on
  Monday. Total snow accumulations of 10 to 15 inches are
  expected. Isolated amounts to 18 inches are possible. 

* WHERE...Portions of southeast South Dakota, northeast Nebraska 
  and northwest Iowa.

* WHEN...From 9 PM this evening to midnight CST Monday night.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph will 
  cause whiteout conditions in blowing snow. Significant 
  drifting of the snow is likely.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you.  If you get
stranded, stay with your vehicle. The latest road conditions for
the state you are calling from can be obtained by calling 5 1 1.

$$

IAZ001>003-012>014-MNZ081-089-090-211945-
/O.UPG.KFSD.WS.W.0001.180122T0000Z-180123T0600Z/
/O.NEW.KFSD.BZ.W.0001.180122T0300Z-180123T0600Z/
Lyon IA-Osceola-Dickinson-Sioux-O'Brien-Clay IA-Cottonwood-Nobles-
Jackson-
341 AM CST Sun Jan 21 2018

...BLIZZARD WARNING IN EFFECT FROM 9 PM THIS EVENING TO MIDNIGHT
CST MONDAY NIGHT...

* WHAT...Blizzard conditions expected. Travel will be very 
  dangerous to impossible, including during the morning commute 
  on Monday. Tree branches could fall as well. Total snow 
  accumulations of 10 to 14 inches are expected.

* WHERE...Portions of northwest Iowa and southwest Minnesota.

* WHEN...From 9 PM this evening to midnight CST Monday night.

* ADDITIONAL DETAILS...Winds gusting as high as 45 mph will 
  cause whiteout conditions in blowing snow. Significant 
  drifting of the snow is likely.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you.  If you get
stranded, stay with your vehicle. The latest road conditions for
the state you are calling from can be obtained by calling 5 1 1.

$$

IAZ021-022-032-211945-
/O.UPG.KFSD.WS.A.0002.180122T0000Z-180123T0600Z/
/O.NEW.KFSD.BZ.W.0001.180122T0300Z-180123T0600Z/
Cherokee-Buena Vista-Ida-
341 AM CST Sun Jan 21 2018

...BLIZZARD WARNING IN EFFECT FROM 9 PM THIS EVENING TO MIDNIGHT
CST MONDAY NIGHT...

* WHAT...Blizzard conditions expected. Travel will be very 
  dangerous to impossible, including during the morning commute 
  on Monday. Total snow accumulations of 5 to 8 inches, with 
  localized amounts up to 14 inches, are expected.

* WHERE...Cherokee, Buena Vista and Ida Counties.

* WHEN...From 9 PM this evening to midnight CST Monday night.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph will 
  cause whiteout conditions in blowing snow. Significant 
  drifting of the snow is likely.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you.  If you get
stranded, stay with your vehicle. The latest road conditions for
the state you are calling from can be obtained by calling 5 1 1.

$$

IAZ031-NEZ014-211945-
/O.UPG.KFSD.WS.A.0002.180122T0000Z-180123T0000Z/
/O.NEW.KFSD.BZ.W.0001.180122T0300Z-180123T0600Z/
Woodbury-Dakota-
341 AM CST Sun Jan 21 2018

...BLIZZARD WARNING IN EFFECT FROM 9 PM THIS EVENING TO MIDNIGHT
CST MONDAY NIGHT...

* WHAT...Blizzard conditions expected. Travel will be very 
  dangerous to impossible, including during the morning commute 
  on Monday. Total snow accumulations of 7 to 10 inches, with 
  localized amounts up to 14 inches, are expected.

* WHERE...In Nebraska, Dakota County. In Iowa, Woodbury County.

* WHEN...From 9 PM this evening to midnight CST Monday night.

* ADDITIONAL DETAILS...Winds gusting as high as 40 mph will 
  cause whiteout conditions in blowing snow. Significant 
  drifting of the snow is likely.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Blizzard Warning means severe winter weather conditions are
expected or occurring. Falling and blowing snow with strong winds
and poor visibilities are likely. This will lead to whiteout
conditions, making travel extremely dangerous. Do not travel. If
you must travel, have a winter survival kit with you.  If you get
stranded, stay with your vehicle. The latest road conditions for
the state you are calling from can be obtained by calling 5 1 1.

$$

SDZ061-211945-
/O.UPG.KFSD.WS.A.0002.180122T0000Z-180123T0000Z/
/O.EXA.KFSD.WS.W.0001.180122T0000Z-180123T0000Z/
McCook-
341 AM CST Sun Jan 21 2018

...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM
CST MONDAY...

* WHAT...Heavy snow expected. Plan on difficult travel 
  conditions, including during the morning commute on Monday. 
  Total snow accumulations of 4 to 6 inches are expected.

* WHERE...McCook County.

* WHEN...From 6 PM this evening to 6 PM CST Monday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are expected. 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.

$$

MNZ080-097-098-211945-
/O.CON.KFSD.WS.W.0001.180122T0000Z-180123T0600Z/
Murray-Pipestone-Rock-
341 AM CST Sun Jan 21 2018

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO MIDNIGHT CST MONDAY NIGHT...

* WHAT...Heavy snow expected. Plan on difficult travel 
  conditions, including during the morning commute on Monday. 
  Total snow accumulations of 6 to 9 inches, with localized 
  amounts up to 11 inches, are expected.

* WHERE...Murray, Pipestone and Rock Counties.

* WHEN...From 6 PM this evening to midnight CST Monday night.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are expected. 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.

$$

SDZ062-065-066-068-211945-
/O.CON.KFSD.WS.W.0001.180122T0000Z-180123T0000Z/
Minnehaha-Hutchinson-Turner-Bon Homme-
341 AM CST Sun Jan 21 2018

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO 6 PM CST MONDAY...

* WHAT...Heavy snow expected. Plan on difficult travel conditions,
  including during the morning commute on Monday. Total snow
  accumulations of 5 to 9 inches, with localized amounts up to 12
  inches, are expected.

* WHERE...Minnehaha, Hutchinson, Turner and Bon Homme Counties.

* WHEN...From 6 PM this evening to 6 PM CST Monday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are expected. 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.

$$

SDZ050-063-064-211945-
/O.CON.KFSD.WS.W.0001.180121T1200Z-180122T1800Z/
Gregory-Charles Mix-Douglas-
341 AM CST Sun Jan 21 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST MONDAY...

* WHAT...Heavy snow expected. Plan on difficult travel conditions,
  including during the morning commute on Monday. Total snow
  accumulations of 5 to 9 inches.

* WHERE...Gregory, Charles Mix and Douglas Counties.

* WHEN...Until noon CST Monday.

* ADDITIONAL DETAILS...Be prepared for significant reductions in 
  visibility at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions are expected. 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.

$$

SDZ052-053-057-058-211945-
/O.UPG.KFSD.WS.A.0002.180121T1200Z-180122T1800Z/
/O.NEW.KFSD.WW.Y.0002.180121T1200Z-180122T1200Z/
Jerauld-Sanborn-Brule-Aurora-
341 AM CST Sun Jan 21 2018

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

* WHAT...Snow expected. Plan on slippery road conditions. Total 
  snow accumulations of 2 to 4 inches are expected.

* WHERE...Jerauld, Sanborn, Brule and Aurora Counties.

* WHEN...Until 6 AM CST Monday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

SDZ059-211945-
/O.UPG.KFSD.WS.A.0002.180122T0000Z-180123T0000Z/
/O.NEW.KFSD.WW.Y.0002.180121T1200Z-180122T1200Z/
Davison-
341 AM CST Sun Jan 21 2018

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

* WHAT...Snow expected. Plan on slippery road conditions, 
  including during the morning commute on Monday. Total snow 
  accumulations of 2 to 4 inches are expected.

* WHERE...Davison County.

* WHEN...Until 6 AM CST Monday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

SDZ040-054>056-060-211945-
/O.UPG.KFSD.WS.A.0002.180122T0000Z-180123T0000Z/
/O.NEW.KFSD.WW.Y.0002.180122T0000Z-180123T0000Z/
Brookings-Miner-Lake-Moody-Hanson-
341 AM CST Sun Jan 21 2018

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

* WHAT...Snow expected. Plan on slippery road conditions,
  including during the morning commute on Monday. Total snow
  accumulations of 2 to 5 inches.

* WHERE...Brookings, Miner, Lake, Moody and Hanson Counties.

* WHEN...From 6 PM this evening to 6 PM CST Monday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

MNZ071-072-211945-
/O.UPG.KFSD.WS.A.0002.180122T0000Z-180123T0600Z/
/O.NEW.KFSD.WW.Y.0002.180122T0000Z-180123T0000Z/
Lincoln MN-Lyon MN-
341 AM CST Sun Jan 21 2018

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

* WHAT...Snow expected. Plan on slippery road conditions,
  including during the morning commute on Monday. Total snow
  accumulations of 3 to 6 inches.

* WHERE...Lincoln MN and Lyon MN Counties.

* WHEN...From 6 PM this evening to 6 PM CST Monday.

* ADDITIONAL DETAILS...Be prepared for reduced visibilities at 
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

$$

Dux

Area Forecast Discussion
National Weather Service Sioux Falls SD
408 AM CST Fri Jan 19 2018

.SHORT TERM...(Today and Tonight)
Issued at 408 AM CST Fri Jan 19 2018

A weakening closed low evident on WV imagery off the BC coast will
continue to fill as the parent trough moves onto the west coast. Our
region will sit under west to southwest flow aloft allowing for
unseasonably warm temperatures. 925 mb temperatures in the +4 to +11
C range will lead to widespread 40s to mid 50s across the region, or
about 20 to 25 degrees above normal. Shaved a few degrees off
temperatures given the dense cirrus shield expected through much of
the day. A weak cold front will slide through tonight with low
temperatures generally in the 20s. With the anticipated snow melt
this afternoon, will need to keep an eye on any fog potential early
Saturday.

.LONG TERM...(Saturday through Thursday)
Issued at 408 AM CST Fri Jan 19 2018

On Saturday, the various deterministic models are beginning to come
around in better agreement with the on shore timing of the strong
upper trough. By 00Z Sunday, the center of the trough axis is still
west of the four corners area. This forecast area is marked by a
light northerly flow of air at the surface with plenty of mid and
upper level moisture. But the air mass continue to be warm, with
925mb temperatures generally in the +2 to +4C range, which should
give above normal highs in the upper 30s to lower 40s.

Saturday night, the GFS has slowed down the eastward progression of
the upper low similar to the ECMWF and CMC models, and is near the
four corners area by 12Z Sunday. In effect, this slows down the pops
in our southeast zones late Saturday night for any freezing drizzle
threat, with now only slight chance pops in northwest IA and
adjacent areas for light freezing drizzle or very light snow Sunday
morning. Those low pops may too be lowered even more for Sunday
morning in the future if the eastward progression slows down
anymore. Lows Saturday night are largely in the mid 20s and are
problematic. There will be plenty of cloud cover helping to keep
lows mild for this time of year, however the surface flow veers to
the northeast ushering in a relatively dry low level air mass
initially. Therefore kept these consensus model lows and did not
alter them warmer.

On Sunday and Sunday night, there is now consensus in moving the
upper low across northern KS and southern NE, with much better
consensus with the speed of the system also. The upper low then
continues a track toward the mid Mississippi valley by late Monday
where some subtle timing and placement differences then show up. The
forecast area is in the right rear quad of a jet streak over the
Great Lakes on Sunday which will aid in the beginning of broad
ascent. However as the upper level features lift across the central
plains Sunday night and Monday, the southern branch of the jet does
not quite curl up northward which does not give the CWA a strong
left exit region of the southern jet stream. What we do have however
is strong low to mid level frontogenesis which aids in rapid
saturation beginning late Sunday and continues through Sunday night
and Monday morning. Mid level frontogenesis is right now, maximized
along an axis from Tyndall SD to Brookings SD and Marshall MN, with
the max low level frontogenesis further east in northwest IA. There
is also some less stable per the 600mb EPV* but not overly unstable.
Lastly, a strong trowal maximized in the 295-300K layer exists over
southwest MN and extreme northwest IA through the entire day on
Monday. The 00Z NAM appears to be too far west with its maximum QPF
placement, putting it along the 600mb frontogenesis across our
western zones where little in the way of instability exists. So that
scenario was discounted. In fact the 06Z NAM shifted its max QPF
eastward. For now, blended the CMC, GFS and ECMWF which were much
closer in placing the higher QPF amounts in southwest MN, southeast
SD, northeast NE and parts of northwest IA minus our far southeast
zones around the Storm Lake vicinity. It is these areas that are on
the unstable side of the mid level frontogenesis. When one looks at
the last several runs combined of the ECMWF, the GFS and CMC, and
even the German standard on the Internet, more often than not, the
max QPF band has been placed along an axis from Yankton to
Vermillion SD, northeastward through southeast SD and into southwest
MN. Therefore wanted to continue that trend with this forecast.

That said, some of the 00Z NAM got into the consensus, therefore
believe that our northwest zones along and west of a Chamberlain to
Kingsbury county line could be too high with amounts. Therefore did
not include those areas in a winter storm watch. In our far
southeast, we also left them out of a winter storm watch for now
with snow amounts being held down by warm air aloft. The CMC is the
warmest aloft as it is slightly further north with its low level
features. What that does do however is give them a potential for
more accumulating ice Sunday night around Spencer and Storm Lake.
Elsewhere, a winter storm watch is warranted at this time, extending
it into Monday, a rare watch beyond 72 hours. The watch area could
receive 6 inches or more of snow, coupled with burly winds averaging
in the 25 to 35 mph range. To increase winds, blended consensus mos
values into the superblend speeds which were too low. Thought about
putting blizzard wording in the watch, however the cyclogenesis does
not appear to strengthen with this storm as it tracks through the
plains. It does not weaken either, it just stays steady state.
Without the jet curling northward and aiding really sharp ascent and
curvature, strong surface cyclogenesis may be tough to realize.
Therefore for now, left blizzard wording out of the watch but if
things change, we will have plenty of time to refine it.

One thing to watch for in future forecasts is any southeastward
adjustment with the track of the low. I think the timing will not
alter much, so now its down to placement. But again, I fall back to
the overall consensus of the last several runs of several models
described above. The rest of the week looks fairly benign, with
temperatures hovering several degrees either side of normal. Of
course if deep snow cover occurs, we may need to shave a few degrees
of these readings.

&&

.AVIATION...(For the 06Z TAFS through 06Z Friday night)
Issued at 1023 PM CST Thu Jan 18 2018

VFR conditions are expected through the TAF period.

&&

.FSD WATCHES/WARNINGS/ADVISORIES...
SD...Winter Storm Watch from Sunday morning through Monday morning
     for SDZ050-053-054-058>060-063>065-068.

     Winter Storm Watch from Sunday afternoon through Monday morning
     for SDZ040-055-056-061-062-066-067-069>071.

MN...Winter Storm Watch from Sunday evening through Monday afternoon
     for MNZ071-072-080-081-089-090-097-098.

IA...Winter Storm Watch from Sunday afternoon through Monday morning
     for IAZ020-031.

     Winter Storm Watch from Sunday evening through Monday afternoon
     for IAZ001>003-012-013.

NE...Winter Storm Watch from Sunday afternoon through Monday morning
     for NEZ013-014.

&&

SHORT TERM...Kalin
LONG TERM...MJ
AVIATION...

Hazardous Weather Outlook
National Weather Service Sioux Falls SD
336 PM CST Thu Jan 18 2018

IAZ001>003-012>014-020>022-031-032-MNZ080-081-089-090-098-NEZ013-
014-SDZ062-066-067-069>071-192145-
Lyon IA-Osceola-Dickinson-Sioux-O'Brien-Clay IA-Plymouth-Cherokee-
Buena Vista-Woodbury-Ida-Murray-Cottonwood-Nobles-Jackson-Rock-
Dixon-Dakota-Minnehaha-Turner-Lincoln SD-Yankton-Clay SD-Union-
336 PM CST Thu Jan 18 2018

This Hazardous Weather Outlook is for portions of northwest Iowa,
west central Iowa, southwest Minnesota, northeast Nebraska, and
southeast South Dakota.

.DAY ONE...This Afternoon and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

There is a chance of light freezing drizzle late early Sunday
morning which could produce a minor glaze on untreated surfaces.

A strong storm system is expected to move into the
region late on Sunday and continue into Monday. Accumulating
snow coupled with strong winds may create blowing snow Sunday
night into Monday. It is too early to forecast detailed snow
amounts, therefore continue to monitor future forecasts for the
latest information.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

MNZ071-072-097-SDZ038>040-050-052>061-063>065-068-192145-
Lincoln MN-Lyon MN-Pipestone-Beadle-Kingsbury-Brookings-Gregory-
Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-Davison-Hanson-
McCook-Charles Mix-Douglas-Hutchinson-Bon Homme-
336 PM CST Thu Jan 18 2018

This Hazardous Weather Outlook is for portions of southwest
Minnesota, central South Dakota, east central South Dakota, south
central South Dakota, and southeast South Dakota.

.DAY ONE...This Afternoon and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

A strong system could bring measurable snow and strong winds
creating blowing snow Sunday into Monday. It is too early to
forecast detailed snow amounts, therefore continue to monitor
future forecasts for the latest information.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.