Alert archive / Iowa / Ice Storm Warnings in 2017

Ice Storm Warning 1, NWS Sioux Falls, SD

January 14, 20175 counties in Iowa; Dakota County, Nebraska

NWS Sioux Falls, SD issued this ice storm warning at Jan 14, 2017, 3:55 PM CST for 5 counties in Iowa; Dakota County, Nebraska. It took effect at Jan 16, 2017, 12:00 AM CST. It was in force for 19 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jan 14, 2017, 3:55 PM CST (21:55 UTC)
In effect from
Jan 16, 2017, 12:00 AM CST
Expired
Jan 16, 2017, 7:00 PM CST
In force
19 hr
Issued by
NWS Sioux Falls, SD

Counties Buena Vista County, IA, Cherokee County, IA, Clay County, IA, Ida County, IA, Woodbury County, IA, Dakota County, NE

The radar

The Sioux Falls radar (KFSD), 137 km from the middle of the area, began a volume at 21:58 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

Omaha, NE (KOAX), launched 12:00Z, 9.9 hours before the alert went out and 156 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, Omaha, NE at 12:00Z on 2017-01-14Temperature 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, Omaha, NE at 12:00Z on 2017-01-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 square meters per square second.1939587897117Sfc1 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
1762 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

876 
WWUS43 KFSD 142155
WSWFSD

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
355 PM CST SAT JAN 14 2017

IAZ014-021-022-031-032-NEZ014-150600-
/O.UPG.KFSD.WS.A.0001.170116T0000Z-170117T0600Z/
/O.NEW.KFSD.IS.W.0001.170116T0000Z-170117T0600Z/
CLAY IA-CHEROKEE-BUENA VISTA-WOODBURY-IDA-DAKOTA-
INCLUDING THE CITIES OF...SPENCER...CHEROKEE...STORM LAKE...
SIOUX CITY...IDA GROVE...HOLSTEIN...BATTLE CREEK...
SOUTH SIOUX CITY
355 PM CST SAT JAN 14 2017

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

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED AN ICE
STORM WARNING...WHICH IS IN EFFECT FROM 6 PM SUNDAY TO MIDNIGHT
CST MONDAY NIGHT. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. 

* TIMING...A WINTRY MIX OF PRECIPITATION WILL SPREAD NORTH INTO
  THE AREA SUNDAY EVENING AND CONTINUE INTO MONDAY. PRECIPITATION
  IS EXPECTED TO BEGIN AS EITHER FREEZING RAIN OR SLEET SUNDAY
  EVENING...BECOMING ALL FREEZING RAIN IN THE AREA EARLY ON
  MONDAY. PRECIPITATION IS EXPECTED TO SWITCH OVER TO SNOW ON
  MONDAY AFTERNOON.

* ACCUMULATIONS...ICE ACCUMULATIONS OF TWO TENTHS TO A THIRD OF AN
  INCH ARE EXPECTED THROUGH MONDAY AFTERNOON. THEREAFTER, THE
  PRECIPITATION WILL TRANSITION TO SNOW, WITH ONE TO THREE INCHES
  OF SNOW EXPECTED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ICE STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF ICE ACCUMULATIONS
WILL MAKE TRAVEL DANGEROUS OR IMPOSSIBLE. TRAVEL IS STRONGLY
DISCOURAGED. COMMERCE WILL LIKELY BE SEVERELY IMPACTED. IF YOU
MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY. ICE ACCUMULATIONS AND WINDS WILL
LIKELY LEAD TO SNAPPED POWER LINES AND FALLING TREE BRANCHES THAT
ADD TO THE DANGER.

&&

$$

IAZ001>003-012-013-020-MNZ080-081-089-090-098-NEZ013-SDZ062-
066>071-150600-
/O.CON.KFSD.WS.A.0001.170116T0000Z-170117T0600Z/
LYON IA-OSCEOLA-DICKINSON-SIOUX-O'BRIEN-PLYMOUTH-MURRAY-
COTTONWOOD-NOBLES-JACKSON-ROCK-DIXON-MINNEHAHA-TURNER-LINCOLN SD-
BON HOMME-YANKTON-CLAY SD-UNION-
INCLUDING THE CITIES OF...ROCK RAPIDS...GEORGE...INWOOD...
LARCHWOOD...SIBLEY...SPIRIT LAKE...MILFORD...ARNOLDS PARK...
SIOUX CENTER...ORANGE CITY...ROCK VALLEY...HAWARDEN...HULL...
SHELDON...HARTLEY...SANBORN...LE MARS...SLAYTON...FULDA...
WINDOM...MOUNTAIN LAKE...WORTHINGTON...JACKSON...LAKEFIELD...
LUVERNE...WAKEFIELD...PONCA...ALLEN...SIOUX FALLS...PARKER...
CENTERVILLE...MARION...VIBORG...IRENE...HURLEY...CHANCELLOR...
CANTON...LENNOX...TEA...HARRISBURG...TYNDALL...SCOTLAND...
SPRINGFIELD...AVON...TABOR...YANKTON...VERMILLION...
NORTH SIOUX CITY...BERESFORD...ELK POINT...ALCESTER...JEFFERSON
355 PM CST SAT JAN 14 2017

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

* TIMING...A WINTRY MIX OF PRECIPITATION WILL BEGIN SPREADING
  NORTH INTO THE AREA SUNDAY EVENING AND CONTINUE INTO MONDAY.
  PRECIPITATION IS EXPECTED TO BEGIN AS EITHER FREEZING RAIN OR
  SLEET SUNDAY EVENING. PRECIPITATION SHOULD SWITCH OVER TO SNOW
  FROM WEST TO EAST ON MONDAY.

* ACCUMULATIONS...ICE ACCUMULATIONS COULD RANGE FROM A TENTH TO A
  QUARTER OF AN INCH...WITH THE GREATEST ACCUMULATIONS EXPECTED
  ACROSS NORTHWEST IOWA. AS PRECIPITATION TRANSITIONS OVER TO SNOW
  ON MONDAY, MODERATE SNOW ACCUMULATIONS WILL BE POSSIBLE. AT THIS
  TIME, THE HEAVIEST SNOW ACCUMULATIONS LOOK TO BE JUST NORTH OF
  HIGHWAY 60 IMPACTING THE FAR SOUTHEASTERN TIP OF SOUTH
  DAKOTA...NORTHWEST IOWA INTO SOUTHWEST MINNESOTA.

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.

&&

$$
8 follow-up statements
745 
WWUS43 KFSD 150255
WSWFSD

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
855 PM CST SAT JAN 14 2017

IAZ014-021-022-031-032-NEZ014-151100-
/O.EXT.KFSD.IS.W.0001.170116T0300Z-170117T0600Z/
CLAY IA-CHEROKEE-BUENA VISTA-WOODBURY-IDA-DAKOTA-
INCLUDING THE CITIES OF...SPENCER...CHEROKEE...STORM LAKE...
SIOUX CITY...IDA GROVE...HOLSTEIN...BATTLE CREEK...
SOUTH SIOUX CITY
855 PM CST SAT JAN 14 2017

...ICE STORM WARNING NOW IN EFFECT FROM 9 PM SUNDAY TO MIDNIGHT
CST MONDAY NIGHT...

* TIMING...A WINTRY MIX OF PRECIPITATION WILL SPREAD NORTH INTO
  THE AREA SUNDAY EVENING AND CONTINUE INTO MONDAY. PRECIPITATION
  IS EXPECTED TO BEGIN AS EITHER FREEZING RAIN OR SLEET SUNDAY
  EVENING...BECOMING ALL FREEZING RAIN IN THE AREA EARLY ON
  MONDAY. PRECIPITATION IS EXPECTED TO SWITCH OVER TO SNOW ON
  MONDAY AFTERNOON.

* ACCUMULATIONS...ICE ACCUMULATIONS OF TWO TENTHS TO A THIRD OF
  AN INCH ARE EXPECTED THROUGH MONDAY AFTERNOON. THEREAFTER...THE
  PRECIPITATION WILL TRANSITION TO SNOW...WITH ONE TO THREE INCHES
  OF SNOW EXPECTED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ICE STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF ICE ACCUMULATIONS
WILL MAKE TRAVEL DANGEROUS OR IMPOSSIBLE. TRAVEL IS STRONGLY
DISCOURAGED. COMMERCE WILL LIKELY BE SEVERELY IMPACTED. IF YOU
MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY. ICE ACCUMULATIONS AND WINDS WILL
LIKELY LEAD TO SNAPPED POWER LINES AND FALLING TREE BRANCHES THAT
ADD TO THE DANGER.

&&

$$

IAZ012-013-020-NEZ013-SDZ068>071-151100-
/O.EXT.KFSD.WS.A.0001.170116T0300Z-170117T0600Z/
SIOUX-O'BRIEN-PLYMOUTH-DIXON-BON HOMME-YANKTON-CLAY SD-UNION-
INCLUDING THE CITIES OF...SIOUX CENTER...ORANGE CITY...
ROCK VALLEY...HAWARDEN...HULL...SHELDON...HARTLEY...SANBORN...
LE MARS...WAKEFIELD...PONCA...ALLEN...TYNDALL...SCOTLAND...
SPRINGFIELD...AVON...TABOR...YANKTON...VERMILLION...
NORTH SIOUX CITY...BERESFORD...ELK POINT...ALCESTER...JEFFERSON
855 PM CST SAT JAN 14 2017

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

* TIMING...A WINTRY MIX OF PRECIPITATION WILL BEGIN SPREADING
  NORTH INTO THE AREA LATE SUNDAY EVENING AND CONTINUE INTO
  MONDAY. PRECIPITATION IS EXPECTED TO BEGIN AS EITHER FREEZING
  RAIN OR SLEET SUNDAY EVENING. PRECIPITATION SHOULD SWITCH OVER
  TO SNOW FROM WEST TO EAST ON MONDAY.

* ACCUMULATIONS...ICE ACCUMULATIONS COULD RANGE FROM A TENTH TO A
  QUARTER OF AN INCH...WITH THE GREATEST ACCUMULATIONS EXPECTED
  ACROSS NORTHWEST IOWA...ESPECIALLY NEAR AND EAST OF HIGHWAY 60.
  AS PRECIPITATION TRANSITIONS OVER TO SNOW ON MONDAY...MODERATE
  SNOW ACCUMULATIONS WILL BE POSSIBLE. AT THIS TIME...THE GREATEST
  SNOW ACCUMULATIONS LOOK TO EXTEND FROM THE FAR SOUTHEASTERN TIP
  OF SOUTH DAKOTA TOWARD THE HIGHWAY 60 CORRIDOR IN NORTHWEST IOWA
  AND SOUTHWEST MINNESOTA.

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.

&&

$$

IAZ001>003-MNZ080-081-089-090-098-SDZ062-066-067-151100-
/O.EXT.KFSD.WS.A.0001.170116T0600Z-170117T0600Z/
LYON IA-OSCEOLA-DICKINSON-MURRAY-COTTONWOOD-NOBLES-JACKSON-ROCK-
MINNEHAHA-TURNER-LINCOLN SD-
INCLUDING THE CITIES OF...ROCK RAPIDS...GEORGE...INWOOD...
LARCHWOOD...SIBLEY...SPIRIT LAKE...MILFORD...ARNOLDS PARK...
SLAYTON...FULDA...WINDOM...MOUNTAIN LAKE...WORTHINGTON...
JACKSON...LAKEFIELD...LUVERNE...SIOUX FALLS...PARKER...
CENTERVILLE...MARION...VIBORG...IRENE...HURLEY...CHANCELLOR...
CANTON...LENNOX...TEA...HARRISBURG
855 PM CST SAT JAN 14 2017

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

* TIMING...A WINTRY MIX OF PRECIPITATION WILL BEGIN SPREADING
  NORTH INTO THE AREA AFTER MIDNIGHT SUNDAY NIGHT...AND CONTINUE
  INTO MONDAY. PRECIPITATION COULD BEGIN AS EITHER FREEZING RAIN
  OR SNOW SUNDAY NIGHT. PRECIPITATION SHOULD SWITCH OVER TO ALL
  SNOW FROM WEST TO EAST ON MONDAY.

* ACCUMULATIONS...ICE ACCUMULATIONS COULD RANGE FROM A GLAZE TO
  TWO TENTHS OF AN INCH...WITH THE GREATEST ICE ACCUMULATIONS
  TOWARD THE IOWA GREAT LAKES. AS PRECIPITATION TRANSITIONS TO
  SNOW ON MONDAY...MODERATE SNOW ACCUMULATIONS WILL BE POSSIBLE.
  AT THIS TIME...THE GREATEST SNOW ACCUMULATIONS LOOK TO BE TOWARD
  THE HIGHWAY 60 CORRIDOR IN NORTHWEST IOWA AND SOUTHWEST
  MINNESOTA.

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.

&&

$$
443 
WWUS43 KFSD 151041
WSWFSD

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
441 AM CST SUN JAN 15 2017

IAZ014-021-022-031-032-NEZ014-151845-
/O.EXT.KFSD.IS.W.0001.170116T0600Z-170117T0600Z/
CLAY IA-CHEROKEE-BUENA VISTA-WOODBURY-IDA-DAKOTA-
INCLUDING THE CITIES OF...SPENCER...CHEROKEE...STORM LAKE...
SIOUX CITY...IDA GROVE...HOLSTEIN...BATTLE CREEK...
SOUTH SIOUX CITY
441 AM CST SUN JAN 15 2017

...ICE STORM WARNING NOW IN EFFECT FROM MIDNIGHT TONIGHT TO
MIDNIGHT CST MONDAY NIGHT...

* TIMING...A WINTRY MIX OF PRECIPITATION WILL SPREAD NORTH INTO
  THE AREA TONIGHT AND CONTINUE INTO MONDAY. PRECIPITATION IS
  EXPECTED TO BEGIN AS EITHER FREEZING RAIN OR SLEET LATE
  TONIGHT...BECOMING ALL FREEZING RAIN EARLY ON MONDAY.
  PRECIPITATION IS EXPECTED TO SWITCH OVER TO SNOW ON MONDAY
  AFTERNOON.

* ACCUMULATIONS...ICE ACCUMULATIONS OF TWO TENTHS TO A THIRD OF AN
  INCH ARE EXPECTED THROUGH MONDAY AFTERNOON. THEREAFTER... THE
  PRECIPITATION WILL TRANSITION TO SNOW...WITH 1 TO 2 INCHES OF
  SNOW EXPECTED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ICE STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF ICE ACCUMULATIONS
WILL MAKE TRAVEL DANGEROUS OR IMPOSSIBLE. TRAVEL IS STRONGLY
DISCOURAGED. COMMERCE WILL LIKELY BE SEVERELY IMPACTED. IF YOU
MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY. ICE ACCUMULATIONS AND WINDS WILL
LIKELY LEAD TO SNAPPED POWER LINES AND FALLING TREE BRANCHES THAT
ADD TO THE DANGER.

&&

$$

IAZ012-013-020-NEZ013-SDZ070-071-151845-
/O.UPG.KFSD.WS.A.0001.170116T0300Z-170117T0600Z/
/O.NEW.KFSD.WW.Y.0003.170116T0900Z-170117T0600Z/
SIOUX-O'BRIEN-PLYMOUTH-DIXON-CLAY SD-UNION-
INCLUDING THE CITIES OF...SIOUX CENTER...ORANGE CITY...
ROCK VALLEY...HAWARDEN...HULL...SHELDON...HARTLEY...SANBORN...
LE MARS...WAKEFIELD...PONCA...ALLEN...VERMILLION...
NORTH SIOUX CITY...BERESFORD...ELK POINT...ALCESTER...JEFFERSON
441 AM CST SUN JAN 15 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 3 AM MONDAY TO MIDNIGHT
CST MONDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A WINTER
WEATHER ADVISORY FOR MIXED PRECIPITATION...WHICH IS IN EFFECT
FROM 3 AM MONDAY TO MIDNIGHT CST MONDAY NIGHT. THE WINTER STORM
WATCH IS NO LONGER IN EFFECT.

* TIMING...A WINTRY MIX OF PRECIPITATION WILL BEGIN SPREADING
  NORTH INTO THE AREA LATE TONIGHT AND CONTINUE INTO MONDAY.
  PRECIPITATION IS EXPECTED TO BEGIN AS EITHER FREEZING RAIN OR
  SLEET LATE TONIGHT. PRECIPITATION SHOULD SWITCH OVER TO SNOW
  FROM WEST TO EAST ON MONDAY.

* ACCUMULATIONS...ICE ACCUMULATIONS COULD RANGE FROM A TENTH TO
  TWO TENTHS OF AN INCH...WITH THE GREATEST ACCUMULATIONS
  EXPECTED ACROSS NORTHWEST IOWA...ESPECIALLY NEAR AND EAST OF
  HIGHWAY 60. AS PRECIPITATION TRANSITIONS OVER TO SNOW ON
  MONDAY...SNOW ACCUMULATIONS OF 1 TO 3 INCHES WILL BE POSSIBLE.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

IAZ001>003-151845-
/O.UPG.KFSD.WS.A.0001.170116T0600Z-170117T0600Z/
/O.NEW.KFSD.WW.Y.0003.170116T0900Z-170117T0600Z/
LYON IA-OSCEOLA-DICKINSON-
INCLUDING THE CITIES OF...ROCK RAPIDS...GEORGE...INWOOD...
LARCHWOOD...SIBLEY...SPIRIT LAKE...MILFORD...ARNOLDS PARK
441 AM CST SUN JAN 15 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 3 AM MONDAY TO MIDNIGHT
CST MONDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A WINTER
WEATHER ADVISORY FOR MIXED PRECIPITATION...WHICH IS IN EFFECT
FROM 3 AM MONDAY TO MIDNIGHT CST MONDAY NIGHT. THE WINTER STORM
WATCH IS NO LONGER IN EFFECT.

* TIMING...A WINTRY MIX OF PRECIPITATION WILL BEGIN SPREADING
  NORTH INTO THE AREA LATE TONIGHT...AND CONTINUE INTO MONDAY.
  PRECIPITATION COULD BEGIN AS EITHER FREEZING RAIN OR SNOW LATE
  TONIGHT. PRECIPITATION SHOULD SWITCH OVER TO ALL SNOW FROM WEST
  TO EAST ON MONDAY.

* ACCUMULATIONS...ICE ACCUMULATIONS COULD RANGE FROM A TENTH TO
  TWO TENTHS OF AN INCH...WITH THE GREATEST ICE ACCUMULATIONS
  TOWARD THE IOWA GREAT LAKES. AS PRECIPITATION TRANSITIONS TO
  SNOW ON MONDAY...SNOW ACCUMULATIONS OF 2 TO 3 INCHES WILL BE
  POSSIBLE.
 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

MNZ089-090-151845-
/O.UPG.KFSD.WS.A.0001.170116T0600Z-170117T0600Z/
/O.NEW.KFSD.WW.Y.0003.170116T1200Z-170117T0600Z/
NOBLES-JACKSON-
INCLUDING THE CITIES OF...WORTHINGTON...JACKSON...LAKEFIELD
441 AM CST SUN JAN 15 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM MONDAY TO MIDNIGHT
CST MONDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A WINTER
WEATHER ADVISORY FOR MIXED PRECIPITATION...WHICH IS IN EFFECT
FROM 6 AM MONDAY TO MIDNIGHT CST MONDAY NIGHT. THE WINTER STORM
WATCH IS NO LONGER IN EFFECT.

* TIMING...A WINTRY MIX OF PRECIPITATION WILL BEGIN SPREADING
  NORTH INTO THE AREA ON MONDAY MORNING...AND CONTINUE INTO MONDAY
  EVENING. PRECIPITATION COULD BEGIN AS EITHER FREEZING RAIN OR
  SNOW...THEN SHOULD SWITCH OVER TO ALL SNOW FROM WEST TO EAST
  LATER ON MONDAY.

* ACCUMULATIONS...ICE ACCUMULATIONS COULD RANGE FROM A TENTH TO
  TWO TENTHS OF AN INCH...WITH THE GREATEST ICE ACCUMULATIONS
  TOWARD THE IOWA GREAT LAKES. AS PRECIPITATION TRANSITIONS TO
  SNOW LATER ON MONDAY...SNOW ACCUMULATIONS OF 2 TO 3 INCHES WILL
  BE POSSIBLE.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

SDZ068-069-151845-
/O.EXT.KFSD.WS.A.0001.170116T0900Z-170117T0600Z/
BON HOMME-YANKTON-
INCLUDING THE CITIES OF...TYNDALL...SCOTLAND...SPRINGFIELD...
AVON...TABOR...YANKTON
441 AM CST SUN JAN 15 2017

...WINTER STORM WATCH NOW IN EFFECT FROM LATE TONIGHT THROUGH
MONDAY EVENING...

* TIMING...A WINTRY MIX OF PRECIPITATION WILL BEGIN SPREADING
  NORTH INTO THE AREA LATE TONIGHT AND CONTINUE INTO MONDAY.
  PRECIPITATION IS EXPECTED TO BEGIN AS EITHER FREEZING RAIN OR
  SLEET TONIGHT. PRECIPITATION SHOULD SWITCH OVER TO SNOW FROM
  WEST TO EAST ON MONDAY.

* ACCUMULATIONS...ICE ACCUMULATIONS COULD BE AROUND A TENTH OF AN
  INCH. AS PRECIPITATION TRANSITIONS OVER TO SNOW ON
  MONDAY...MODERATE SNOW ACCUMULATIONS WILL BE POSSIBLE.

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.

&&

$$

MNZ080-081-098-SDZ062-066-067-151845-
/O.EXT.KFSD.WS.A.0001.170116T1200Z-170117T0600Z/
MURRAY-COTTONWOOD-ROCK-MINNEHAHA-TURNER-LINCOLN SD-
INCLUDING THE CITIES OF...SLAYTON...FULDA...WINDOM...
MOUNTAIN LAKE...LUVERNE...SIOUX FALLS...PARKER...CENTERVILLE...
MARION...VIBORG...IRENE...HURLEY...CHANCELLOR...CANTON...LENNOX...
TEA...HARRISBURG
441 AM CST SUN JAN 15 2017

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

* TIMING...A WINTRY MIX OF PRECIPITATION WILL BEGIN SPREADING
  NORTH INTO THE AREA LATE TONIGHT...AND CONTINUE THROUGH MONDAY.
  PRECIPITATION COULD BEGIN AS EITHER FREEZING RAIN OR SNOW LATE
  TONIGHT. PRECIPITATION SHOULD SWITCH OVER TO ALL SNOW FROM WEST
  TO EAST ON MONDAY.

* ACCUMULATIONS...ICE ACCUMULATIONS COULD RANGE FROM A GLAZE TO A
  TENTH OF AN INCH. AS PRECIPITATION TRANSITIONS TO SNOW ON
  MONDAY...MODERATE SNOW ACCUMULATIONS WILL BE POSSIBLE. 

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.

&&

$$
838 
WWUS43 KFSD 151831
WSWFSD

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1231 PM CST SUN JAN 15 2017

IAZ014-021-022-031-032-NEZ014-160245-
/O.CON.KFSD.IS.W.0001.170116T0600Z-170117T0600Z/
CLAY IA-CHEROKEE-BUENA VISTA-WOODBURY-IDA-DAKOTA-
INCLUDING THE CITIES OF...SPENCER...CHEROKEE...STORM LAKE...
SIOUX CITY...IDA GROVE...HOLSTEIN...BATTLE CREEK...
SOUTH SIOUX CITY
1231 PM CST SUN JAN 15 2017

...ICE STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
MIDNIGHT CST MONDAY NIGHT...

* TIMING...A WINTRY MIX OF PRECIPITATION WILL SPREAD NORTH INTO 
  THE AREA TONIGHT AND CONTINUE INTO MONDAY. PRECIPITATION IS 
  EXPECTED TO BEGIN AS EITHER FREEZING RAIN OR SLEET LATE 
  TONIGHT...BECOMING ALL FREEZING RAIN EARLY ON MONDAY. 
  PRECIPITATION IS EXPECTED TO SWITCH OVER TO SNOW ON MONDAY 
  AFTERNOON. 

* ACCUMULATIONS...ICE ACCUMULATIONS OF TWO TENTHS TO A THIRD OF 
  AN INCH ARE EXPECTED THROUGH MONDAY AFTERNOON. THEREAFTER... 
  THE PRECIPITATION WILL TRANSITION TO SNOW...WITH 1 TO 2 INCHES 
  OF SNOW EXPECTED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ICE STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF ICE ACCUMULATIONS
WILL MAKE TRAVEL DANGEROUS OR IMPOSSIBLE. TRAVEL IS STRONGLY
DISCOURAGED. COMMERCE WILL LIKELY BE SEVERELY IMPACTED. IF YOU
MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY. ICE ACCUMULATIONS AND WINDS WILL
LIKELY LEAD TO SNAPPED POWER LINES AND FALLING TREE BRANCHES THAT
ADD TO THE DANGER.

&&

$$

IAZ001>003-012-013-020-NEZ013-SDZ070-071-160245-
/O.CON.KFSD.WW.Y.0003.170116T0900Z-170117T0600Z/
LYON IA-OSCEOLA-DICKINSON-SIOUX-O'BRIEN-PLYMOUTH-DIXON-CLAY SD-
UNION-
INCLUDING THE CITIES OF...ROCK RAPIDS...GEORGE...INWOOD...
LARCHWOOD...SIBLEY...SPIRIT LAKE...MILFORD...ARNOLDS PARK...
SIOUX CENTER...ORANGE CITY...ROCK VALLEY...HAWARDEN...HULL...
SHELDON...HARTLEY...SANBORN...LE MARS...WAKEFIELD...PONCA...
ALLEN...VERMILLION...NORTH SIOUX CITY...BERESFORD...ELK POINT...
ALCESTER...JEFFERSON
1231 PM CST SUN JAN 15 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM MONDAY TO
MIDNIGHT CST MONDAY NIGHT...

* TIMING...A WINTRY MIX OF PRECIPITATION WILL BEGIN SPREADING 
  NORTH INTO THE AREA LATE TONIGHT AND CONTINUE INTO MONDAY. 
  PRECIPITATION IS EXPECTED TO BEGIN AS EITHER FREEZING RAIN OR 
  SLEET LATE TONIGHT. PRECIPITATION SHOULD SWITCH OVER TO SNOW 
  FROM WEST TO EAST ON MONDAY. 

* ACCUMULATIONS...ICE ACCUMULATIONS COULD RANGE FROM A TENTH TO 
  TWO TENTHS OF AN INCH...WITH THE GREATEST ACCUMULATIONS 
  EXPECTED ACROSS NORTHWEST IOWA...ESPECIALLY NEAR AND EAST OF 
  HIGHWAY 60. AS PRECIPITATION TRANSITIONS OVER TO SNOW ON 
  MONDAY...SNOW ACCUMULATIONS OF 1 TO 3 INCHES WILL BE POSSIBLE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

MNZ089-090-160245-
/O.CON.KFSD.WW.Y.0003.170116T1200Z-170117T0600Z/
NOBLES-JACKSON-
INCLUDING THE CITIES OF...WORTHINGTON...JACKSON...LAKEFIELD
1231 PM CST SUN JAN 15 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM MONDAY TO
MIDNIGHT CST MONDAY NIGHT...

* TIMING...A WINTRY MIX OF PRECIPITATION WILL BEGIN SPREADING 
  NORTH INTO THE AREA ON MONDAY MORNING...AND CONTINUE INTO 
  MONDAY EVENING. PRECIPITATION COULD BEGIN AS EITHER FREEZING 
  RAIN OR SNOW...THEN SHOULD SWITCH OVER TO ALL SNOW FROM WEST 
  TO EAST LATER ON MONDAY. 

* ACCUMULATIONS...ICE ACCUMULATIONS COULD RANGE FROM A TENTH TO 
  TWO TENTHS OF AN INCH...WITH THE GREATEST ICE ACCUMULATIONS 
  TOWARD THE IOWA GREAT LAKES. AS PRECIPITATION TRANSITIONS TO 
  SNOW LATER ON MONDAY...SNOW ACCUMULATIONS OF 2 TO 3 INCHES 
  WILL BE POSSIBLE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

SDZ068-069-160245-
/O.CON.KFSD.WS.A.0001.170116T0900Z-170117T0600Z/
BON HOMME-YANKTON-
INCLUDING THE CITIES OF...TYNDALL...SCOTLAND...SPRINGFIELD...
AVON...TABOR...YANKTON
1231 PM CST SUN JAN 15 2017

...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
MONDAY EVENING...

* TIMING...A WINTRY MIX OF PRECIPITATION WILL BEGIN SPREADING 
  NORTH INTO THE AREA LATE TONIGHT AND CONTINUE INTO MONDAY. 
  PRECIPITATION IS EXPECTED TO BEGIN AS EITHER FREEZING RAIN OR 
  SLEET TONIGHT. PRECIPITATION SHOULD SWITCH OVER TO SNOW FROM 
  WEST TO EAST ON MONDAY. 

* ACCUMULATIONS...ICE ACCUMULATIONS COULD BE AROUND A TENTH OF 
  AN INCH. AS PRECIPITATION TRANSITIONS OVER TO SNOW ON MONDAY...
   MODERATE SNOW ACCUMULATIONS WILL BE POSSIBLE. 

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.

&&

$$

MNZ080-081-098-SDZ062-066-067-160245-
/O.CON.KFSD.WS.A.0001.170116T1200Z-170117T0600Z/
MURRAY-COTTONWOOD-ROCK-MINNEHAHA-TURNER-LINCOLN SD-
INCLUDING THE CITIES OF...SLAYTON...FULDA...WINDOM...
MOUNTAIN LAKE...LUVERNE...SIOUX FALLS...PARKER...CENTERVILLE...
MARION...VIBORG...IRENE...HURLEY...CHANCELLOR...CANTON...LENNOX...
TEA...HARRISBURG
1231 PM CST SUN JAN 15 2017

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

* TIMING...A WINTRY MIX OF PRECIPITATION WILL BEGIN SPREADING 
  NORTH INTO THE AREA LATE TONIGHT...AND CONTINUE THROUGH 
  MONDAY. PRECIPITATION COULD BEGIN AS EITHER FREEZING RAIN OR 
  SNOW LATE TONIGHT. PRECIPITATION SHOULD SWITCH OVER TO ALL 
  SNOW FROM WEST TO EAST ON MONDAY. 

* ACCUMULATIONS...ICE ACCUMULATIONS COULD RANGE FROM A GLAZE TO 
  A TENTH OF AN INCH. AS PRECIPITATION TRANSITIONS TO SNOW ON 
  MONDAY...MODERATE SNOW ACCUMULATIONS WILL BE POSSIBLE. 

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.

&&

$$
850 
WWUS43 KFSD 152103
WSWFSD

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
303 PM CST SUN JAN 15 2017

IAZ014-021-022-031-032-NEZ014-160515-
/O.CON.KFSD.IS.W.0001.170116T0600Z-170117T0600Z/
CLAY IA-CHEROKEE-BUENA VISTA-WOODBURY-IDA-DAKOTA-
INCLUDING THE CITIES OF...SPENCER...CHEROKEE...STORM LAKE...
SIOUX CITY...IDA GROVE...HOLSTEIN...BATTLE CREEK...
SOUTH SIOUX CITY
303 PM CST SUN JAN 15 2017

...ICE STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
MIDNIGHT CST MONDAY NIGHT...

* TIMING...A WINTRY MIX OF PRECIPITATION WILL SPREAD NORTH INTO
  THE AREA LATE TONIGHT AND CONTINUE INTO MONDAY. FREEZING RAIN
  WILL OCCUR...AS WELL AS SOME SLEET. AS COLDER AIR ABOVE THE
  SURFACE MOVES IN LATE MONDAY...THE PRECIPITATION WILL CHANGE TO
  LIGHT SNOW MONDAY EVENING. 

* ACCUMULATIONS...ICE ACCUMULATIONS OF TWO TENTHS TO A THIRD OF AN
  INCH ARE EXPECTED THROUGH MONDAY AFTERNOON. THEREAFTER... THE
  PRECIPITATION WILL TRANSITION TO SNOW...WITH AN INCH OR LESS OF
  SNOW EXPECTED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ICE STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF ICE ACCUMULATIONS
WILL MAKE TRAVEL DANGEROUS OR IMPOSSIBLE. TRAVEL IS STRONGLY
DISCOURAGED. COMMERCE WILL LIKELY BE SEVERELY IMPACTED. IF YOU
MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY. ICE ACCUMULATIONS AND WINDS WILL
LIKELY LEAD TO SNAPPED POWER LINES AND FALLING TREE BRANCHES THAT
ADD TO THE DANGER.

&&

$$

SDZ068-069-160515-
/O.UPG.KFSD.WS.A.0001.170116T0900Z-170117T0600Z/
/O.EXA.KFSD.WW.Y.0003.170116T1200Z-170117T0600Z/
BON HOMME-YANKTON-
INCLUDING THE CITIES OF...TYNDALL...SCOTLAND...SPRINGFIELD...
AVON...TABOR...YANKTON
303 PM CST SUN JAN 15 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM MONDAY TO MIDNIGHT
CST MONDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A WINTER
WEATHER ADVISORY FOR LIGHT FREEZING RAIN AND LIGHT SNOW...WHICH
IS IN EFFECT FROM 6 AM MONDAY TO MIDNIGHT CST MONDAY NIGHT. THE
WINTER STORM WATCH IS NO LONGER IN EFFECT.

* TIMING...A WINTRY MIX OF PRECIPITATION WILL BEGIN SPREADING
  NORTH INTO THE AREA LATE TONIGHT AND CONTINUE INTO MONDAY.
  PRECIPITATION WILL BE PRIMARILY LIGHT FREEZING RAIN...WITH ALSO
  A THREAT FOR SLEET NOW AND THEN. WHEN COLDER AIR ABOVE THE
  SURFACE BEGINS TO MOVE IN...THE PRECIPITATION WILL CHANGEOVER TO
  LIGHT SNOW MONDAY AFTERNOON. 

* ACCUMULATIONS...ICE ACCUMULATIONS WILL LIKELY STAY A TENTH OF AN
  INCH OR LESS...FINISHING UP WITH AN INCH OR LESS OF SNOW MONDAY
  AFTERNOON AND EVENING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

MNZ080-081-098-SDZ062-066-067-160515-
/O.UPG.KFSD.WS.A.0001.170116T1200Z-170117T0600Z/
/O.EXA.KFSD.WW.Y.0003.170116T1200Z-170117T0600Z/
MURRAY-COTTONWOOD-ROCK-MINNEHAHA-TURNER-LINCOLN SD-
INCLUDING THE CITIES OF...SLAYTON...FULDA...WINDOM...
MOUNTAIN LAKE...LUVERNE...SIOUX FALLS...PARKER...CENTERVILLE...
MARION...VIBORG...IRENE...HURLEY...CHANCELLOR...CANTON...LENNOX...
TEA...HARRISBURG
303 PM CST SUN JAN 15 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM MONDAY TO MIDNIGHT
CST MONDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A WINTER
WEATHER ADVISORY FOR LIGHT FREEZING RAIN AND LIGHT SNOW...WHICH
IS IN EFFECT FROM 6 AM MONDAY TO MIDNIGHT CST MONDAY NIGHT. THE
WINTER STORM WATCH IS NO LONGER IN EFFECT.

* TIMING...LIGHT FREEZING RAIN WILL MOVE NORTH INTO THE AREA EARLY
  MONDAY MORNING...TRANSITIONING INTO SNOW THROUGH THE AFTERNOON
  AND DIMINISHING MONDAY EVENING. THERE IS ALSO THREAT FOR SLEET
  NOW AND THEN ON MONDAY. 

* ACCUMULATIONS...ICE ACCUMULATIONS COULD RANGE FROM A LIGHT GLAZE
  ON THE NORTHERN SIDE OF THE PRECIPITATION SHIELD...TO UP TO A
  TENTH OF AN INCH ON THE SOUTHERN SIDE. SIOUX FALLS PROPER WILL
  LIKELY RECEIVE LESS THAN FIVE HUNDREDTHS OF AN INCH OF ICE. SNOW
  ACCUMULATIONS WILL BE MINOR...MAINLY AN INCH OR LESS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

IAZ001>003-012-013-020-NEZ013-SDZ070-071-160515-
/O.CON.KFSD.WW.Y.0003.170116T0900Z-170117T0600Z/
LYON IA-OSCEOLA-DICKINSON-SIOUX-O'BRIEN-PLYMOUTH-DIXON-CLAY SD-
UNION-
INCLUDING THE CITIES OF...ROCK RAPIDS...GEORGE...INWOOD...
LARCHWOOD...SIBLEY...SPIRIT LAKE...MILFORD...ARNOLDS PARK...
SIOUX CENTER...ORANGE CITY...ROCK VALLEY...HAWARDEN...HULL...
SHELDON...HARTLEY...SANBORN...LE MARS...WAKEFIELD...PONCA...
ALLEN...VERMILLION...NORTH SIOUX CITY...BERESFORD...ELK POINT...
ALCESTER...JEFFERSON
303 PM CST SUN JAN 15 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM MONDAY TO
MIDNIGHT CST MONDAY NIGHT...

* TIMING...A WINTRY MIX OF PRECIPITATION WILL SPREAD NORTH INTO
  THE AREA LATE TONIGHT AND CONTINUE INTO MONDAY. FREEZING RAIN
  WILL OCCUR...AS WELL AS SOME SLEET POSSIBLE. AS COLDER AIR ABOVE
  THE SURFACE MOVES IN LATE MONDAY...THE PRECIPITATION WILL CHANGE
  TO LIGHT SNOW LATE MONDAY AFTERNOON AND EVENING. 

* ACCUMULATIONS...ICE ACCUMULATIONS WILL RANGE FROM A TENTH TO TWO
  TENTHS OF AN INCH...FINISHING UP WITH AN INCH OR LESS OF SNOW. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

MNZ089-090-160515-
/O.CON.KFSD.WW.Y.0003.170116T1200Z-170117T0600Z/
NOBLES-JACKSON-
INCLUDING THE CITIES OF...WORTHINGTON...JACKSON...LAKEFIELD
303 PM CST SUN JAN 15 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM MONDAY TO
MIDNIGHT CST MONDAY NIGHT...

* TIMING...LIGHT FREEZING RAIN WILL MOVE NORTH INTO THE AREA EARLY
  MONDAY MORNING...TRANSITIONING TO SNOW LATER MONDAY AFTERNOON
  AND EVENING. THERE IS ALSO THREAT FOR SLEET NOW AND THEN ON
  MONDAY.

* ACCUMULATIONS...ICE ACCUMULATIONS WILL AVERAGE A TENTH OF AN
  INCH OR LESS ON MONDAY...FINISHING UP WITH AROUND AN INCH OF
  SNOW LATER MONDAY AFTERNOON AND EVENING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$
461 
WWUS43 KFSD 160321
WSWFSD

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
921 PM CST SUN JAN 15 2017

IAZ014-021-022-031-032-NEZ014-161130-
/O.CON.KFSD.IS.W.0001.170116T0600Z-170117T0600Z/
CLAY IA-CHEROKEE-BUENA VISTA-WOODBURY-IDA-DAKOTA-
INCLUDING THE CITIES OF...SPENCER...CHEROKEE...STORM LAKE...
SIOUX CITY...IDA GROVE...HOLSTEIN...BATTLE CREEK...
SOUTH SIOUX CITY
921 PM CST SUN JAN 15 2017

...ICE STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST MONDAY
NIGHT...

* TIMING...A WINTRY MIX OF PRECIPITATION WILL SPREAD NORTH INTO 
  THE AREA LATE TONIGHT AND CONTINUE INTO MONDAY. FREEZING RAIN 
  WILL OCCUR...AS WELL AS SOME SLEET. AS COLDER AIR ABOVE THE 
  SURFACE MOVES IN LATE MONDAY...THE PRECIPITATION WILL CHANGE 
  TO LIGHT SNOW MONDAY EVENING. 

* ACCUMULATIONS...ICE ACCUMULATIONS OF TWO TENTHS TO A THIRD OF 
  AN INCH ARE EXPECTED THROUGH MONDAY AFTERNOON. THEREAFTER... 
  THE PRECIPITATION WILL TRANSITION TO SNOW...WITH AN INCH OR 
  LESS OF SNOW EXPECTED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ICE STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF ICE ACCUMULATIONS
WILL MAKE TRAVEL DANGEROUS OR IMPOSSIBLE. TRAVEL IS STRONGLY
DISCOURAGED. COMMERCE WILL LIKELY BE SEVERELY IMPACTED. IF YOU
MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY. ICE ACCUMULATIONS AND WINDS WILL
LIKELY LEAD TO SNAPPED POWER LINES AND FALLING TREE BRANCHES THAT
ADD TO THE DANGER.

&&

$$

IAZ001>003-012-013-020-NEZ013-SDZ070-071-161130-
/O.CON.KFSD.WW.Y.0003.170116T0900Z-170117T0600Z/
LYON IA-OSCEOLA-DICKINSON-SIOUX-O'BRIEN-PLYMOUTH-DIXON-CLAY SD-
UNION-
INCLUDING THE CITIES OF...ROCK RAPIDS...GEORGE...INWOOD...
LARCHWOOD...SIBLEY...SPIRIT LAKE...MILFORD...ARNOLDS PARK...
SIOUX CENTER...ORANGE CITY...ROCK VALLEY...HAWARDEN...HULL...
SHELDON...HARTLEY...SANBORN...LE MARS...WAKEFIELD...PONCA...
ALLEN...VERMILLION...NORTH SIOUX CITY...BERESFORD...ELK POINT...
ALCESTER...JEFFERSON
921 PM CST SUN JAN 15 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 AM MONDAY TO
MIDNIGHT CST MONDAY NIGHT...

* TIMING...A WINTRY MIX OF PRECIPITATION WILL SPREAD NORTH INTO
  THE AREA LATE TONIGHT AND CONTINUE INTO MONDAY. FREEZING RAIN
  WILL BE THE PRIMARY PRECIPITATION TYPE...ALTHOUGH SOME SLEET IS
  ALSO POSSIBLE. THE PRECIPITATION WILL GRADUALLY CHANGE TO LIGHT
  SNOW LATE MONDAY AFTERNOON AND EVENING...AS COLDER AIR ABOVE THE
  SURFACE MOVES INTO THE REGION.

* ACCUMULATIONS...ICE ACCUMULATIONS WILL RANGE FROM A TENTH TO 
  TWO TENTHS OF AN INCH...FINISHING UP WITH AN INCH OR LESS OF 
  SNOW. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

MNZ080-081-089-090-098-SDZ062-066>069-161130-
/O.CON.KFSD.WW.Y.0003.170116T1200Z-170117T0600Z/
MURRAY-COTTONWOOD-NOBLES-JACKSON-ROCK-MINNEHAHA-TURNER-LINCOLN SD-
BON HOMME-YANKTON-
INCLUDING THE CITIES OF...SLAYTON...FULDA...WINDOM...
MOUNTAIN LAKE...WORTHINGTON...JACKSON...LAKEFIELD...LUVERNE...
SIOUX FALLS...PARKER...CENTERVILLE...MARION...VIBORG...IRENE...
HURLEY...CHANCELLOR...CANTON...LENNOX...TEA...HARRISBURG...
TYNDALL...SCOTLAND...SPRINGFIELD...AVON...TABOR...YANKTON
921 PM CST SUN JAN 15 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM MONDAY TO
MIDNIGHT CST MONDAY NIGHT...

* TIMING...A WINTRY MIX OF PRECIPITATION WILL BEGIN SPREADING
  NORTH INTO THE AREA LATE TONIGHT AND CONTINUE INTO MONDAY.
  PRECIPITATION WILL BE PRIMARILY LIGHT FREEZING RAIN OR FREEZING
  DRIZZLE. THE PRECIPITATION WILL GRADUALLY CHANGE TO LIGHT SNOW
  LATE MONDAY AFTERNOON AND EVENING...AS COLDER AIR ABOVE THE
  SURFACE MOVES INTO THE REGION.

* ACCUMULATIONS...ICE ACCUMULATIONS WILL LIKELY STAY A TENTH OF AN
  INCH OR LESS...FOLLOWED BY LESS THAN AN INCH OF SNOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$
061 
WWUS43 KFSD 160950
WSWFSD

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
350 AM CST MON JAN 16 2017

IAZ014-021-022-031-032-NEZ014-161800-
/O.CON.KFSD.IS.W.0001.000000T0000Z-170117T0600Z/
CLAY IA-CHEROKEE-BUENA VISTA-WOODBURY-IDA-DAKOTA-
INCLUDING THE CITIES OF...SPENCER...CHEROKEE...STORM LAKE...
SIOUX CITY...IDA GROVE...HOLSTEIN...BATTLE CREEK...
SOUTH SIOUX CITY
350 AM CST MON JAN 16 2017

...ICE STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

* TIMING...A WINTRY MIX OF PRECIPITATION WILL CONTINUE TO SPREAD
  NORTHWARD INTO THE AREA TODAY...WITH HEAVIEST PRECIPITATION
  OCCURRING THIS AFTERNOON. FREEZING RAIN WILL OCCUR...AS WELL AS
  SOME ISOLATED POCKETS OF SLEET. AS COLDER AIR ABOVE THE SURFACE
  MOVES IN THIS EVENING...THE PRECIPITATION WILL CHANGE TO LIGHT
  SNOW.

* ACCUMULATIONS...ICE ACCUMULATIONS OF TWO TENTHS TO A THIRD OF AN
  INCH ARE EXPECTED THROUGH LATE THIS AFTERNOON. THEREAFTER... THE
  PRECIPITATION WILL TRANSITION TO SNOW...WITH A HALF AN INCH OR
  LESS OF SNOW EXPECTED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ICE STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF ICE ACCUMULATIONS
WILL MAKE TRAVEL DANGEROUS OR IMPOSSIBLE. TRAVEL IS STRONGLY
DISCOURAGED. COMMERCE WILL LIKELY BE SEVERELY IMPACTED. IF YOU
MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY. ICE ACCUMULATIONS AND WINDS WILL
LIKELY LEAD TO SNAPPED POWER LINES AND FALLING TREE BRANCHES THAT
ADD TO THE DANGER.

&&

$$

IAZ001>003-012-013-020-NEZ013-SDZ070-071-161800-
/O.CON.KFSD.WW.Y.0003.000000T0000Z-170117T0600Z/
LYON IA-OSCEOLA-DICKINSON-SIOUX-O'BRIEN-PLYMOUTH-DIXON-CLAY SD-
UNION-
INCLUDING THE CITIES OF...ROCK RAPIDS...GEORGE...INWOOD...
LARCHWOOD...SIBLEY...SPIRIT LAKE...MILFORD...ARNOLDS PARK...
SIOUX CENTER...ORANGE CITY...ROCK VALLEY...HAWARDEN...HULL...
SHELDON...HARTLEY...SANBORN...LE MARS...WAKEFIELD...PONCA...
ALLEN...VERMILLION...NORTH SIOUX CITY...BERESFORD...ELK POINT...
ALCESTER...JEFFERSON
350 AM CST MON JAN 16 2017

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

* TIMING...A WINTRY MIX OF PRECIPITATION WILL CONTINUE TO SPREAD
  NORTHWARD INTO THE AREA TODAY...WITH HEAVIEST PRECIPITATION
  OCCURRING THIS AFTERNOON. FREEZING RAIN WILL OCCUR...AS WELL AS
  SOME ISOLATED POCKETS OF SLEET. AS COLDER AIR ABOVE THE SURFACE
  MOVES IN THIS EVENING...THE PRECIPITATION WILL CHANGE TO LIGHT
  SNOW. 

* ACCUMULATIONS...ICE ACCUMULATIONS WILL RANGE FROM A TENTH TO TWO
  TENTHS OF AN INCH...FINISHING UP WITH A HALF AN INCH OR LESS OF
  SNOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

MNZ080-081-089-090-098-SDZ062-066>069-161800-
/O.CON.KFSD.WW.Y.0003.170116T1200Z-170117T0600Z/
MURRAY-COTTONWOOD-NOBLES-JACKSON-ROCK-MINNEHAHA-TURNER-LINCOLN SD-
BON HOMME-YANKTON-
INCLUDING THE CITIES OF...SLAYTON...FULDA...WINDOM...
MOUNTAIN LAKE...WORTHINGTON...JACKSON...LAKEFIELD...LUVERNE...
SIOUX FALLS...PARKER...CENTERVILLE...MARION...VIBORG...IRENE...
HURLEY...CHANCELLOR...CANTON...LENNOX...TEA...HARRISBURG...
TYNDALL...SCOTLAND...SPRINGFIELD...AVON...TABOR...YANKTON
350 AM CST MON JAN 16 2017

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

* TIMING...A WINTRY MIX OF PRECIPITATION WILL CONTINUE TO SPREAD
  NORTHWARD INTO THE AREA TODAY...WITH HEAVIEST PRECIPITATION
  OCCURRING THIS AFTERNOON. FREEZING RAIN WILL OCCUR...AS WELL AS
  SOME ISOLATED POCKETS OF SLEET. AS COLDER AIR ABOVE THE SURFACE
  MOVES IN THIS EVENING...THE PRECIPITATION WILL CHANGE TO LIGHT
  SNOW. 

* ACCUMULATIONS...ICE ACCUMULATIONS WILL LIKELY RANGE FROM A LIGHT
  GLAZE TO A TENTH OF AN INCH...FOLLOWED BY LESS THAN A HALF AN
  INCH OF SNOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$
889 
WWUS43 KFSD 161802
WSWFSD

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1202 PM CST MON JAN 16 2017

IAZ014-021-022-031-032-NEZ014-170215-
/O.CON.KFSD.IS.W.0001.000000T0000Z-170117T0600Z/
CLAY IA-CHEROKEE-BUENA VISTA-WOODBURY-IDA-DAKOTA-
INCLUDING THE CITIES OF...SPENCER...CHEROKEE...STORM LAKE...
SIOUX CITY...IDA GROVE...HOLSTEIN...BATTLE CREEK...
SOUTH SIOUX CITY
1202 PM CST MON JAN 16 2017

...ICE STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

* TIMING...THE HEAVIEST PORTION OF THE FREEZING RAIN WILL OCCUR
  DURING THE AFTERNOON HOURS...THEN WILL DIMINISH THIS EVENING.
  FURTHERMORE...THE PRECIPITATION WILL CHANGE OVER TO A WINTRY
  MIX OF SLEET AND SNOW AS THE EVENING PROGRESSES BUT WILL BE VERY
  LIGHT BY THEN.

* ACCUMULATIONS...ICE ACCUMULATIONS OF TWO TENTHS TO A THIRD OF AN
  INCH WILL OCCUR. BY THIS EVENING...THE PRECIPITATION WILL
  TRANSITION OVER TO LIGHT SLEET AND SNOW WITH AN INCH OF LESS
  EXPECTED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ICE STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF ICE ACCUMULATIONS
WILL MAKE TRAVEL DANGEROUS OR IMPOSSIBLE. TRAVEL IS STRONGLY
DISCOURAGED. COMMERCE WILL LIKELY BE SEVERELY IMPACTED. IF YOU
MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY. ICE ACCUMULATIONS AND WINDS WILL
LIKELY LEAD TO SNAPPED POWER LINES AND FALLING TREE BRANCHES THAT
ADD TO THE DANGER.

&&

$$

IAZ001>003-012-013-020-NEZ013-SDZ070-071-170215-
/O.CON.KFSD.WW.Y.0003.000000T0000Z-170117T0600Z/
LYON IA-OSCEOLA-DICKINSON-SIOUX-O'BRIEN-PLYMOUTH-DIXON-CLAY SD-
UNION-
INCLUDING THE CITIES OF...ROCK RAPIDS...GEORGE...INWOOD...
LARCHWOOD...SIBLEY...SPIRIT LAKE...MILFORD...ARNOLDS PARK...
SIOUX CENTER...ORANGE CITY...ROCK VALLEY...HAWARDEN...HULL...
SHELDON...HARTLEY...SANBORN...LE MARS...WAKEFIELD...PONCA...
ALLEN...VERMILLION...NORTH SIOUX CITY...BERESFORD...ELK POINT...
ALCESTER...JEFFERSON
1202 PM CST MON JAN 16 2017

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

* TIMING...FREEZING RAIN WILL OCCUR THIS AFTERNOON...THEN
  TRANSITION OVER TO A MIX OF SLEET AND SNOW LATE THIS AFTERNOON
  AND EVENING.

* ACCUMULATIONS...ICE ACCUMULATIONS WILL RANGE FROM A TENTH TO
  JUST OVER TWO TENTHS OF AN INCH...FINISHING UP WITH AROUND AN
  INCH OF SNOWFALL THIS EVENING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

MNZ080-081-089-090-098-SDZ062-066>069-170215-
/O.CON.KFSD.WW.Y.0003.000000T0000Z-170117T0600Z/
MURRAY-COTTONWOOD-NOBLES-JACKSON-ROCK-MINNEHAHA-TURNER-LINCOLN SD-
BON HOMME-YANKTON-
INCLUDING THE CITIES OF...SLAYTON...FULDA...WINDOM...
MOUNTAIN LAKE...WORTHINGTON...JACKSON...LAKEFIELD...LUVERNE...
SIOUX FALLS...PARKER...CENTERVILLE...MARION...VIBORG...IRENE...
HURLEY...CHANCELLOR...CANTON...LENNOX...TEA...HARRISBURG...
TYNDALL...SCOTLAND...SPRINGFIELD...AVON...TABOR...YANKTON
1202 PM CST MON JAN 16 2017

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

* TIMING...LIGHT FREEZING RAIN AND FREEZING DRIZZLE WILL OCCUR
  THIS AFTERNOON...TRANSITIONING OVER TO LIGHT SLEET OR LIGHT SNOW
  LATE THIS AFTERNOON AND EVENING. 

* ACCUMULATIONS...ICE ACCUMULATIONS WILL RANGE FROM A LIGHT GLAZE
  TO A TENTH OF AN INCH...FOLLOWED BY AN INCH OR LESS OF SNOWFALL. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$
067 
WWUS43 KFSD 162127
WSWFSD

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SIOUX FALLS SD
327 PM CST MON JAN 16 2017

IAZ014-021-022-031-032-NEZ014-170530-
/O.EXB.KFSD.WW.Y.0003.170117T0100Z-170117T0600Z/
/O.EXT.KFSD.IS.W.0001.000000T0000Z-170117T0100Z/
CLAY IA-CHEROKEE-BUENA VISTA-WOODBURY-IDA-DAKOTA-
INCLUDING THE CITIES OF...SPENCER...CHEROKEE...STORM LAKE...
SIOUX CITY...IDA GROVE...HOLSTEIN...BATTLE CREEK...
SOUTH SIOUX CITY
327 PM CST MON JAN 16 2017

...ICE STORM WARNING NOW IN EFFECT UNTIL 7 PM CST THIS EVENING...
...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO
MIDNIGHT CST TONIGHT...

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A WINTER
WEATHER ADVISORY FOR MIXED PRECIPITATION...WHICH IS IN EFFECT
FROM 7 PM THIS EVENING TO MIDNIGHT CST TONIGHT.

* TIMING...FREEZING RAIN WILL TRANSITION OVER TO A MIX OF SLEET
  AND SNOW LATE THIS AFTERNOON AND EVENING.

* ACCUMULATIONS...TOTAL ICE ACCUMULATIONS OF TWO TENTHS TO A
  THIRD OF AN INCH...FINISHING UP WITH UP TO 2 INCHES OF SNOWFALL
  THIS EVENING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

IAZ001>003-012-013-020-NEZ013-SDZ070-071-170530-
/O.CON.KFSD.WW.Y.0003.000000T0000Z-170117T0600Z/
LYON IA-OSCEOLA-DICKINSON-SIOUX-O'BRIEN-PLYMOUTH-DIXON-CLAY SD-
UNION-
INCLUDING THE CITIES OF...ROCK RAPIDS...GEORGE...INWOOD...
LARCHWOOD...SIBLEY...SPIRIT LAKE...MILFORD...ARNOLDS PARK...
SIOUX CENTER...ORANGE CITY...ROCK VALLEY...HAWARDEN...HULL...
SHELDON...HARTLEY...SANBORN...LE MARS...WAKEFIELD...PONCA...
ALLEN...VERMILLION...NORTH SIOUX CITY...BERESFORD...ELK POINT...
ALCESTER...JEFFERSON
327 PM CST MON JAN 16 2017

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

* TIMING...FREEZING RAIN WILL TRANSITION OVER TO A MIX OF SLEET
  AND SNOW LATE THIS AFTERNOON AND EVENING.

* ACCUMULATIONS...TOTAL ICE ACCUMULATIONS WILL RANGE FROM A TENTH
  TO JUST OVER TWO TENTHS OF AN INCH...FINISHING UP WITH UP TO 2
  INCHES OF SNOWFALL THIS EVENING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

MNZ080-081-089-090-098-SDZ062-066>069-170530-
/O.CON.KFSD.WW.Y.0003.000000T0000Z-170117T0600Z/
MURRAY-COTTONWOOD-NOBLES-JACKSON-ROCK-MINNEHAHA-TURNER-LINCOLN SD-
BON HOMME-YANKTON-
INCLUDING THE CITIES OF...SLAYTON...FULDA...WINDOM...
MOUNTAIN LAKE...WORTHINGTON...JACKSON...LAKEFIELD...LUVERNE...
SIOUX FALLS...PARKER...CENTERVILLE...MARION...VIBORG...IRENE...
HURLEY...CHANCELLOR...CANTON...LENNOX...TEA...HARRISBURG...
TYNDALL...SCOTLAND...SPRINGFIELD...AVON...TABOR...YANKTON
327 PM CST MON JAN 16 2017

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

* TIMING...LIGHT FREEZING RAIN AND FREEZING DRIZZLE WILL
  TRANSITION OVER TO LIGHT SLEET OR LIGHT SNOW LATE THIS
  AFTERNOON AND EVENING.

* ACCUMULATIONS...TOTAL ICE ACCUMULATIONS WILL RANGE FROM A LIGHT
  GLAZE TO A TENTH OF AN INCH...FOLLOWED BY AN INCH OR LESS OF
  SNOWFALL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

What forecasters said that day

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

NWS Sioux Falls, SD wrote its last area forecast discussion before this ice storm warning went out at Jan 14, 3:35 PM CST, 20 minutes earlier.

Area forecast discussion, Jan 14, 3:35 PM CST, 20 minutes before
Area Forecast Discussion
National Weather Service Sioux Falls SD
335 PM CST Sat Jan 14 2017

.SHORT TERM...(This evening through Sunday)
Issued at 335 PM CST Sat Jan 14 2017

Quiet weather in store this evening through much on Sunday, ahead of
the upcoming storm system. Temperatures have warmed nicely this
afternoon, with broad surface high pressure overhead bringing light
winds and ample sunshine. Light and variable winds continue into the
overnight hours, gradually becoming light from the south around
daybreak. Overnight lows will be fairly tricky with light surface
winds, mostly clear skies, but milder warm air advection. Went with
similar readings to last night's lows, dropping temperatures
slightly towards colder guidance in the Huron through Brookings
corridor where snowpack is a little more substantial. Lows will
mainly be in the single digits above zero.

Southerly flow increases on Sunday, taping into warm air advection
and increased moisture through the day. Clouds will be on the
increase from the south in the afternoon, but general model
consensus indicates that any precipitation will hold off during the
afternoon. Temperatures on Sunday will be quite mild, especially in
the Missouri Valley where readings near freezing will be possible.
Elsewhere, highs will be in the mid 20s to near 30.

.LONG TERM...(Sunday night through Saturday)
Issued at 335 PM CST Sat Jan 14 2017

Medium range continues to focus on winter storm that is expected to
impact the Midwest Sunday night into Monday.  System is currently in
the Baja of California, and is expect to lift northeast into the
Midwest over the next 24 hours.  Ahead of the wave, there is strong
moisture advection resulting around 850 hpa wet bulb temperatures
remaining above freezing across at least the eastern half of the
forecast area. With isentropic lift increasing as the wave lifts
northeast, expect precipitation to develop and lift north through
the area Sunday night into Monday morning.  Strongest lift on 290K
surface begins in earnest around 09Z Monday morning.  Models at this
point are differing greatly in precipitation amounts, with the ECMWF
and GFS remaining on the low side of amounts and the NAM forecasting
nearly a half of an inch. After coordination with surrounding
offices, ended up blending Superblend QPF amounts with WPC amounts
which favored a 00Z EC/UkMet and 12Z GFS blend. Overall, this slowed
the advancement of QPF slightly, and placed a greater emphasis on
the 18-00Z time frame Monday across northwest Iowa. This is not to
take away from the 12-18Z QPF, as it is the time period when
widespread icing is most significant.

Have also raised pops significantly through the duration of the
event.  Significant questions still remain however.  Interaction
between the southern stream system and shortwave cutting across in
the northern branch of the jet remains uncertain, affecting both QPF
amounts and precipitation type with each solution.  As such, have
only upgraded most confident area for significant icing into an ice
storm warning. This is not to say that those areas will be snow
free, but the ice will be the primary element creating the greatest
impact. Further to the north, there will be a combination of ice and
snow as the cooler air works in from the west, but how quickly the
change over occurs is still murky. Still looks like the potential
for a swath of 2-4" of snow on the northern edge of the heaviest
icing.

With the focus on the late weekend storm, have not made any changes
to the extended, but does appear to be much warmer late in the week
ahead of another approaching system next weekend. For now, have not
adjusted pops, but models have been fairly consistent with this
system, so will likely have to raise pops in future forecasts.

&&

.AVIATION...(For the 18Z TAFS through 18Z Sunday afternoon)
Issued at 1123 AM CST Sat Jan 14 2017

VFR conditions are expected through the TAF period.

&&

.FSD WATCHES/WARNINGS/ADVISORIES...
SD...Winter Storm Watch from Sunday evening through Monday evening
     for SDZ062-066>071.

MN...Winter Storm Watch from Sunday evening through Monday evening
     for MNZ080-081-089-090-098.

IA...Winter Storm Watch from Sunday evening through Monday evening
     for IAZ001>003-012-013-020.

     Ice Storm Warning from 6 PM Sunday to midnight CST Monday night
     for IAZ014-021-022-031-032.

NE...Winter Storm Watch from Sunday evening through Monday evening
     for NEZ013.

     Ice Storm Warning from 6 PM Sunday to midnight CST Monday night
     for NEZ014.

&&

SHORT TERM...
LONG TERM...BT
AVIATION...
Hazardous weather outlook, Jan 14, 4:33 AM CST, 11 hours 22 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SIOUX FALLS SD
433 AM CST SAT JAN 14 2017

IAZ001>003-012>014-020>022-031-032-MNZ080-081-089-090-098-NEZ013-
014-SDZ062-066>071-151045-
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-BON HOMME-YANKTON-
CLAY SD-UNION-
433 AM CST SAT JAN 14 2017

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST
IOWA...WEST CENTRAL IOWA...SOUTHWEST MINNESOTA...NORTHEAST
NEBRASKA AND SOUTHEAST SOUTH DAKOTA.

.DAY ONE...TODAY AND TONIGHT

HAZARDOUS WEATHER IS NOT EXPECTED THROUGH TONIGHT.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

A STRONG STORM SYSTEM WILL LIFT NORTHEASTWARD INTO THE AREA ON
SUNDAY NIGHT AND MONDAY. WHILE SOME UNCERTAINTY STILL REMAINS
WITH THE EXACT TRACK OF THIS SYSTEM...IT IS APPEARING MORE LIKELY
THAT ACCUMULATING FREEZING RAIN WILL OCCUR ON SUNDAY NIGHT INTO
EARLY ON MONDAY...BEFORE TRANSITIONING TO SNOW ON MONDAY
AFTERNOON. AT THIS TIME...ICE ACCUMULATION THROUGH THE PERIOD IS
LOOKING TO RANGE FROM AROUND A TENTH UP TO A QUARTER OF AN
INCH...WITH HIGHER AMOUNTS POSSIBLE. MODERATE SNOW AMOUNTS WILL
THEN BE POSSIBLE ON MONDAY AFTERNOON AND MONDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

MNZ071-072-097-SDZ038>040-050-052>061-063>065-151045-
LINCOLN MN-LYON MN-PIPESTONE-BEADLE-KINGSBURY-BROOKINGS-GREGORY-
JERAULD-SANBORN-MINER-LAKE-MOODY-BRULE-AURORA-DAVISON-HANSON-
MCCOOK-CHARLES MIX-DOUGLAS-HUTCHINSON-
433 AM CST SAT JAN 14 2017

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...TODAY AND TONIGHT

HAZARDOUS WEATHER IS NOT EXPECTED THROUGH TONIGHT.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

A STRONG STORM SYSTEM WILL LIFT NORTHEASTWARD INTO THE AREA ON
SUNDAY NIGHT AND MONDAY. WHILE SOME UNCERTAINTY STILL REMAINS
WITH THE EXACT TRACK OF THIS SYSTEM...IT IS APPEARING MORE LIKELY
THAT FREEZING RAIN...SLEET AND SNOW WILL OCCUR ON SUNDAY NIGHT
INTO MONDAY NIGHT. LIGHT ACCUMULATIONS OF ICE AND SNOW ARE
POSSIBLE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

Nearby

Ice Storm Warnings in Iowa, 2017Ice Storm Warnings in Nebraska, 2017Every ice storm warning in 2017

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.