Alert archive / South Dakota / Wind Chill Advisories in 2019

Wind Chill Advisory 8, NWS Sioux Falls, SD

February 24, 20196 counties in Iowa; 14 counties in South Dakota; 8 counties in Minnesota

NWS Sioux Falls, SD issued this wind chill advisory at Feb 24, 2019, 2:53 PM CST for 6 counties in Iowa; 14 counties in South Dakota; 8 counties in Minnesota. It took effect at Feb 24, 2019, 6:00 PM CST. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued
Feb 24, 2019, 2:53 PM CST (20:53 UTC)
In effect from
Feb 24, 2019, 6:00 PM CST
Expired
Feb 25, 2019, 8:00 AM CST
In force
14 hr
Issued by
NWS Sioux Falls, SD
All 28 counties

Buena Vista County, IA, Clay County, IA, Dickinson County, IA, Lyon County, IA, O'Brien County, IA, Osceola 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, Aurora County, SD, Beadle County, SD, Brookings County, SD, Brule County, SD, Davison County, SD, Hanson County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Sanborn County, SD

The radar

The Sioux Falls radar (KFSD), 24 km from the middle of the area, began a volume at 20:54 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

Aberdeen, SD (KABR), launched 12:00Z, 8.9 hours before the alert went out and 182 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, Aberdeen, SD at 12:00Z on 2019-02-24Temperature 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, Aberdeen, SD at 12:00Z on 2019-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -163 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
585 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
-163 m²/s²
0-3 km storm-relative helicity
-31 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

863 
WWUS43 KFSD 242053
WSWFSD

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sioux Falls SD
253 PM CST Sun Feb 24 2019


MNZ098-SDZ055-056-250500-
/O.EXP.KFSD.BZ.W.0003.000000T0000Z-190224T2100Z/
/O.NEW.KFSD.WC.Y.0008.190225T0000Z-190225T1400Z/
Rock-Lake-Moody-
253 PM CST Sun Feb 24 2019

...WIND CHILL ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 8 AM
CST MONDAY...
...BLIZZARD WARNING WILL EXPIRE AT 3 PM CST THIS AFTERNOON...

* WHAT...Very cold wind chills expected. Wind chills as low as 25
  below to 30 below zero expected.

* WHERE...In South Dakota, Lake and Moody Counties. In 
  Minnesota, Rock County.

* WHEN...From 6 PM this evening to 8 AM CST Monday.

* ADDITIONAL DETAILS...The cold wind chills could cause 
  frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frostbite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves. 

&&

$$

IAZ001-SDZ062-250500-
/O.EXP.KFSD.BZ.W.0003.000000T0000Z-190224T2100Z/
/O.NEW.KFSD.WC.Y.0008.190225T0000Z-190225T1200Z/
Lyon IA-Minnehaha-
253 PM CST Sun Feb 24 2019

...WIND CHILL ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 AM
CST MONDAY...
...BLIZZARD WARNING WILL EXPIRE AT 3 PM CST THIS AFTERNOON...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  25 below zero expected.

* WHERE...In South Dakota, Minnehaha County. In Iowa, Lyon IA 
  County.

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

* ADDITIONAL DETAILS...The cold wind chills could cause 
  frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frostbite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves. 

&&

$$

IAZ012-020-031-NEZ014-SDZ067-071-242200-
/O.EXP.KFSD.BZ.W.0003.000000T0000Z-190224T2100Z/
Sioux-Plymouth-Woodbury-Dakota-Lincoln SD-Union-
253 PM CST Sun Feb 24 2019

...BLIZZARD WARNING WILL EXPIRE AT 3 PM CST THIS AFTERNOON...

While gusty winds from 25 to 35 mph will be possible through 
early this evening, widespread limited visibilities in blowing 
snow are not expected. Exercise caution if traveling as patchy 
blowing and drifting snow may continue through the evening hours.


$$

SDZ053-059>061-250500-
/O.EXP.KFSD.WW.Y.0015.000000T0000Z-190224T2100Z/
/O.NEW.KFSD.WC.Y.0008.190225T0000Z-190225T1200Z/
Sanborn-Davison-Hanson-McCook-
253 PM CST Sun Feb 24 2019

...WIND CHILL ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 AM
CST MONDAY...
...WINTER WEATHER ADVISORY WILL EXPIRE AT 3 PM CST THIS
AFTERNOON...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  25 below zero expected.

* WHERE...Sanborn, Davison, Hanson and McCook Counties.

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

* ADDITIONAL DETAILS...The cold wind chills could cause 
  frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frostbite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves. 

&&

$$

SDZ038-039-054-250500-
/O.EXP.KFSD.WW.Y.0015.000000T0000Z-190224T2100Z/
/O.NEW.KFSD.WC.Y.0008.190225T0000Z-190225T1400Z/
Beadle-Kingsbury-Miner-
253 PM CST Sun Feb 24 2019

...WIND CHILL ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 8 AM
CST MONDAY...
...WINTER WEATHER ADVISORY WILL EXPIRE AT 3 PM CST THIS
AFTERNOON...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  30 below zero expected.

* WHERE...Beadle, Kingsbury and Miner Counties.

* WHEN...From 6 PM this evening to 8 AM CST Monday.

* ADDITIONAL DETAILS...The cold wind chills could cause 
  frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frostbite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves. 

&&

$$

SDZ065-066-068>070-242200-
/O.EXP.KFSD.WW.Y.0015.000000T0000Z-190224T2100Z/
Hutchinson-Turner-Bon Homme-Yankton-Clay SD-
253 PM CST Sun Feb 24 2019

...WINTER WEATHER ADVISORY WILL EXPIRE AT 3 PM CST THIS
AFTERNOON...

While gusty winds from 25 to 30 mph will be possible through 
early this evening, widespread limited visibilities in blowing 
snow are not expected. Exercise caution if traveling as patchy 
blowing and drifting snow may continue through the evening hours..

$$

NEZ013-242200-
/O.EXP.KFSD.WW.Y.0016.000000T0000Z-190224T2100Z/
Dixon-
253 PM CST Sun Feb 24 2019

...WINTER WEATHER ADVISORY WILL EXPIRE AT 3 PM CST THIS
AFTERNOON...

While gusty winds from 25 to 30 mph will be possible through 
early this evening, widespread limited visibilities in blowing 
snow are not expected. Exercise caution if traveling as patchy 
blowing and drifting snow may continue through the evening hours.


$$

IAZ002-003-013-014-022-MNZ071-072-080-081-089-090-097-SDZ040-
250500-
/O.NEW.KFSD.WC.Y.0008.190225T0000Z-190225T1400Z/
/O.CON.KFSD.BZ.W.0003.000000T0000Z-190225T0000Z/
Osceola-Dickinson-O'Brien-Clay IA-Buena Vista-Lincoln MN-Lyon MN-
Murray-Cottonwood-Nobles-Jackson-Pipestone-Brookings-
253 PM CST Sun Feb 24 2019

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...
...WIND CHILL ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 8 AM
CST MONDAY...

* WHAT...Blizzard conditions. Very cold wind chills expected. 
  Winds gusting as high as 45 mph. Wind chills as low as 30 
  below zero expected.

* WHERE...Portions of east central South Dakota, northwest Iowa 
  and southwest Minnesota.

* WHEN...For the Blizzard Warning, until 6 PM CST this evening. 
  For the Wind Chill Advisory, from 6 PM this evening to 8 AM 
  CST Monday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. 
  Widespread blowing snow could significantly reduce visibility. 
  The hazardous conditions could impact the morning commute. The 
  cold wind chills could cause frostbite on exposed skin in as 
  little as 30 minutes.

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. 

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frostbite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves. 

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

&&

$$

IAZ021-032-250000-
/O.CON.KFSD.BZ.W.0003.000000T0000Z-190225T0000Z/
Cherokee-Ida-
253 PM CST Sun Feb 24 2019

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

* WHAT...Ground blizzard conditions. Winds gusting as high as 45
  mph through the afternoon hours. Near whiteout to whiteout 
  conditions, mainly in open areas, with lesser impacts in city 
  centers.

* WHERE...Portions of east central South Dakota, northwest and 
  west central Iowa and southwest Minnesota.

* WHEN...Until 6 PM CST this evening.

* ADDITIONAL DETAILS...Plan on slippery road conditions. 
  Widespread blowing snow could significantly reduce visibility. 
  Gusty winds could bring down tree branches. The cold wind 
  chills as low as 20 below zero could cause frostbite on 
  exposed skin in as little as 30 minutes.

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.

&&

$$

SDZ052-057-058-250500-
/O.NEW.KFSD.WC.Y.0008.190225T0000Z-190225T1200Z/
Jerauld-Brule-Aurora-
253 PM CST Sun Feb 24 2019

...WIND CHILL ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 AM
CST MONDAY...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  25 below zero expected.

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

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

* ADDITIONAL DETAILS...The cold wind chills could cause 
  frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frostbite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves. 

&&

$$
4 follow-up statements
783 
WWUS43 KFSD 242351
WSWFSD

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sioux Falls SD
551 PM CST Sun Feb 24 2019

IAZ002-003-013-014-022-MNZ071-072-080-081-089-090-097-SDZ040-
250915-
/O.EXP.KFSD.BZ.W.0003.000000T0000Z-190225T0000Z/
/O.CON.KFSD.WC.Y.0008.190225T0000Z-190225T1400Z/
Osceola-Dickinson-O'Brien-Clay IA-Buena Vista-Lincoln MN-Lyon MN-
Murray-Cottonwood-Nobles-Jackson-Pipestone-Brookings-
551 PM CST Sun Feb 24 2019

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 8 AM CST MONDAY...
...BLIZZARD WARNING WILL EXPIRE AT 6 PM CST THIS EVENING...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  35 below zero expected.

* WHERE...Portions of east central South Dakota, northwest Iowa 
  and southwest Minnesota.

* WHEN...For the Wind Chill Advisory, from 6 PM this evening to 8
  AM CST Monday.

* ADDITIONAL DETAILS...The dangerously cold wind chills could 
  cause frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frostbite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves. 

&&

$$

IAZ021-032-250100-
/O.EXP.KFSD.BZ.W.0003.000000T0000Z-190225T0000Z/
Cherokee-Ida-
551 PM CST Sun Feb 24 2019

...BLIZZARD WARNING WILL EXPIRE AT 6 PM CST THIS EVENING...

Gusty winds this evening may continue to lead to minor drifting of
snow. 

$$

MNZ098-SDZ038-039-054>056-250915-
/O.CON.KFSD.WC.Y.0008.190225T0000Z-190225T1400Z/
Rock-Beadle-Kingsbury-Miner-Lake-Moody-
551 PM CST Sun Feb 24 2019

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 8 AM CST MONDAY...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  30 below zero expected.

* WHERE...Beadle, Kingsbury and Miner Counties.

* WHEN...From 6 PM this evening to 8 AM CST Monday.

* ADDITIONAL DETAILS...The cold wind chills could cause 
  frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frostbite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves. 

&&

$$

IAZ001-SDZ052-053-057>062-250915-
/O.CON.KFSD.WC.Y.0008.190225T0000Z-190225T1200Z/
Lyon IA-Jerauld-Sanborn-Brule-Aurora-Davison-Hanson-McCook-
Minnehaha-
551 PM CST Sun Feb 24 2019

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST MONDAY...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  25 below zero expected.

* WHERE...Sanborn, Davison, Hanson and McCook Counties.

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

* ADDITIONAL DETAILS...The cold wind chills could cause 
  frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frostbite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves. 

&&

$$
857 
WWUS43 KFSD 250440
WSWFSD

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sioux Falls SD
1040 PM CST Sun Feb 24 2019

IAZ002-003-013-014-022-MNZ071-072-080-081-089-090-097-098-
SDZ038>040-054>056-251300-
/O.CON.KFSD.WC.Y.0008.000000T0000Z-190225T1400Z/
Osceola-Dickinson-O'Brien-Clay IA-Buena Vista-Lincoln MN-Lyon MN-
Murray-Cottonwood-Nobles-Jackson-Pipestone-Rock-Beadle-Kingsbury-
Brookings-Miner-Lake-Moody-
1040 PM CST Sun Feb 24 2019

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 8 AM CST MONDAY...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  30 below zero expected.

* WHERE...Portions of east central South Dakota, northwest Iowa 
  and southwest Minnesota.

* WHEN...For the Wind Chill Advisory, from 6 PM this evening to 
  8 AM CST Monday.

* ADDITIONAL DETAILS...The dangerously cold wind chills could 
  cause frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frostbite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves. 

&&

$$

IAZ001-SDZ052-053-057>062-251200-
/O.CON.KFSD.WC.Y.0008.000000T0000Z-190225T1200Z/
Lyon IA-Jerauld-Sanborn-Brule-Aurora-Davison-Hanson-McCook-
Minnehaha-
1040 PM CST Sun Feb 24 2019

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST MONDAY...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  25 below zero expected.

* WHERE...Sanborn, Davison, Hanson and McCook Counties.

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

* ADDITIONAL DETAILS...The cold wind chills could cause 
  frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frostbite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves. 

&&

$$
180 
WWUS43 KFSD 251149
WSWFSD

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sioux Falls SD
549 AM CST Mon Feb 25 2019


IAZ001-SDZ052-053-057>062-251300-
/O.EXP.KFSD.WC.Y.0008.000000T0000Z-190225T1200Z/
Lyon IA-Jerauld-Sanborn-Brule-Aurora-Davison-Hanson-McCook-
Minnehaha-
549 AM CST Mon Feb 25 2019

...WIND CHILL ADVISORY WILL EXPIRE AT 6 AM CST EARLY THIS
MORNING...

Wind chills will remain between 5 and 15 below zero through mid-
morning Monday.


$$

IAZ002-003-013-014-022-MNZ071-072-080-081-089-090-097-098-
SDZ038>040-054>056-251400-
/O.CON.KFSD.WC.Y.0008.000000T0000Z-190225T1400Z/
Osceola-Dickinson-O'Brien-Clay IA-Buena Vista-Lincoln MN-Lyon MN-
Murray-Cottonwood-Nobles-Jackson-Pipestone-Rock-Beadle-Kingsbury-
Brookings-Miner-Lake-Moody-
549 AM CST Mon Feb 25 2019

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 8 AM CST THIS
MORNING...

* WHAT...Very cold wind chills expected. Wind chills as low as 20 
  below zero expected.

* WHERE...Portions of east central South Dakota, northwest Iowa 
  and southwest Minnesota.

* WHEN...For the Wind Chill Advisory,  until 8 AM CST Monday.

* ADDITIONAL DETAILS...The dangerously cold wind chills could 
  cause frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frostbite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves. 

&&

$$
864 
WWUS43 KFSD 251339
WSWFSD

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sioux Falls SD
739 AM CST Mon Feb 25 2019


IAZ002-003-013-014-022-MNZ071-072-080-081-089-090-097-098-
SDZ038>040-054>056-251445-
/O.EXP.KFSD.WC.Y.0008.000000T0000Z-190225T1400Z/
Osceola-Dickinson-O'Brien-Clay IA-Buena Vista-Lincoln MN-Lyon MN-
Murray-Cottonwood-Nobles-Jackson-Pipestone-Rock-Beadle-Kingsbury-
Brookings-Miner-Lake-Moody-
739 AM CST Mon Feb 25 2019

...WIND CHILL ADVISORY WILL EXPIRE AT 8 AM CST THIS MORNING...

Wind chills will remain between 10 and 15 below zero through
midday Monday.

$$

What forecasters said that day

The local office's own words before this wind chill advisory 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 wind chill advisory went out at Feb 24, 11:43 AM CST, 3 hours 10 minutes earlier.

Area forecast discussion, Feb 24, 11:43 AM CST, 3 hours 10 minutes before
Area Forecast Discussion
National Weather Service Sioux Falls SD
1143 AM CST Sun Feb 24 2019

.SHORT TERM...(Today and Tonight)
Issued at 334 AM CST Sun Feb 24 2019

Impressively wound up low pressure system from yesterday is now
currently spinning over WI and eventually making its way into the
Great Lakes region. This has allowed for a tight surface pressure
gradient on its backside, and in combination with stout cold air
advection, has resulted in very gusty northwesterly winds across
the region. As the pressure gradient begins to slacken by mid to
late afternoon, expected winds to be on the decrease from west to
east.

Blowing snow/visibilities: Forecast soundings still show the
potential to mix down 35-45+ kt wind gusts thru the early
afternoon hours. However, with these caliber winds already in
place and surface observations still generally showing
visibilities in the 1 to 2 mile range, wonder if we are going to
see more drifting snow rather than snow being truly lofted and
causing widespread visibility issues. As the daytime hours arrive,
should start to see better lapse rates in the lowest 500m of the
atmosphere that may help loft snow better, but even these values
in the most recent short range guidance are much less impressive
than was shown yesterday at this time. Another complicating factor
could be the snow characteristic with Friday evening's snow may
have been a bit too wet and has since allowed things to congeal
more than expected. Currently seeing flurries falling out of
patchy stratus that have help drive down visibilities in some
areas, with RH progs showing this potential to continue into the
early afternoon hours. All this to say, beginning to have some
serious doubts about how widespread true ground blizzard
conditions will be across the warning area. As with most ground
blizzard situations, the worst impacts will be limited to outlying
areas that still have an exposed powdery snow cover in place.

Headlines: Because of the above mentioned concerns, gave a lot of
consideration to downgrading the ongoing Blizzard Warning to a
Winter Weather Advisory for all but the Buffalo Ridge region of SW
MN and then southward through the Iowa Great Lakes where more
snow fell earlier this evening. After perusing area webcams and
observations, would feel more comfortable letting the day shift
reevaluate things once the sun comes up before making any drastic
changes to the ongoing warning. Conditions in open country may be
worse than what is being shown by observing station visibilities.
Did go ahead and shorten up the ending time to 3 pm for all
warnings/advisories along/west of I-29.

By tonight, winds should retreat below the 10-20 mph threshold,
although with plenty of cold air in place, will likely see wind
chills approach/exceed advisory level criteria, mainly for
locations north of I-90. After the midnight hours, will see some
light snow filter in from central SD in response to an upper level
jet streak overhead in tandem with a mid level frontal boundary.
Better forcing/frontal dynamics looks to set up generally along
and north of the I-90 corridor.

.LONG TERM...(Monday through Saturday)
Issued at 334 AM CST Sun Feb 24 2019

Light snow largely across the northern half of our coverage area
will continue into Monday morning before fading into the afternoon
hours. While QPF amounts look fairly light with this system,
efficient snow ratios should be enough to produce a swath of 1 to 3
inches in the previously mentioned area. Temperatures Monday will be
stuck in the single digits and may even struggle to get above zero
in areas near the Buffalo Ridge where a very deep snow pack is in
place.

Similar scenario for Monday night into Tuesday with a stripe of
light snow, mainly across the northern half of our CWA. Yet another
chance at some snowfall Wednesday night into Thursday as a compact
shortwave moves into the region. Some signs at a bit more impactful
system by late in the week as an upper level trough moves out of the
western US, although details are still quite fuzzy that far out.

Overall, fairly zonal flow aloft will keep the potential for light
and quick hitting snow events through the week and also prevent any
meaningful warm up. Temperatures through the period remain well
below normal.

&&

.AVIATION...(For the 18Z TAFS through 18Z Monday afternoon)
Issued at 1103 AM CST Sun Feb 24 2019

Blowing snow will remain a concern through this afternoon, with
wind gusts to 30 to 40 kt across the region. The BLSN will cause
reductions in visibility to 1/2sm at times, especially along and
east of I-29. Winds finally decrease after 22z, and will be closer
to 10 to 15 kt by 03z. While the BLSN threat diminishes, the next
band of light snowfall spread across the region along and north of
I-90 after midnight, and exits by the end of the TAF period.
Expect MVFR ceilings and MVFR to IFR visibility with the light
snowfall after 06z.

&&

.FSD WATCHES/WARNINGS/ADVISORIES...
SD...Winter Weather Advisory until 3 PM CST this afternoon for SDZ038-
     039-053-054-059>061-065-066-068>070.

     Blizzard Warning until 3 PM CST this afternoon for SDZ055-056-
     062-067-071.

     Blizzard Warning until 6 PM CST this evening for SDZ040.

MN...Blizzard Warning until 3 PM CST this afternoon for MNZ098.

     Blizzard Warning until 6 PM CST this evening for MNZ071-072-080-
     081-089-090-097.

IA...Blizzard Warning until 3 PM CST this afternoon for IAZ001-012-
     020-031.

     Blizzard Warning until 6 PM CST this evening for IAZ002-003-013-
     014-021-022-032.

NE...Winter Weather Advisory until 3 PM CST this afternoon for NEZ013.

     Blizzard Warning until 3 PM CST this afternoon for NEZ014.

&&

SHORT TERM...Kalin
LONG TERM...Kalin
AVIATION...
Hazardous weather outlook, Feb 24, 4:28 AM CST, 10 hours 25 minutes before
Hazardous Weather Outlook
National Weather Service Sioux Falls SD
428 AM CST Sun Feb 24 2019

IAZ001-012-020-031-MNZ098-NEZ014-SDZ055-056-062-067-071-251030-
Lyon IA-Sioux-Plymouth-Woodbury-Rock-Dakota-Lake-Moody-Minnehaha-
Lincoln SD-Union-
428 AM CST Sun Feb 24 2019

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

.DAY ONE...Today and tonight.

Strong northwesterly winds will lead to areas of near whiteout to
whiteout conditions, mainly in open areas, into the afternoon hours.
Those that must travel should be prepared for rapidly changing
visibility. Winds will gradually diminish by late afternoon and
evening.

Light snow will spread across the region later tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Light snow will continue into Monday morning, with light
accumulations possible, mainly north of I-90.

The active pattern continues thru the week with additional snow
chances.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

SDZ050-052-057-058-063-064-251030-
Gregory-Jerauld-Brule-Aurora-Charles Mix-Douglas-
428 AM CST Sun Feb 24 2019

This Hazardous Weather Outlook is for central South Dakota and
south central South Dakota.

.DAY ONE...Today and tonight.

Gusty northwesterly winds may lead to patchy blowing snow and reduced
visibility this mornings. Winds will gradually subside thru the
afternoon hours.

Light snow will spread back across the area by late tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Light snow will continue into Monday morning, with light
accumulations possible, mainly north of I-90.

The active pattern continues thru the week with additional snow
chances.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NEZ013-SDZ038-039-053-054-059>061-065-066-068>070-251030-
Dixon-Beadle-Kingsbury-Sanborn-Miner-Davison-Hanson-McCook-
Hutchinson-Turner-Bon Homme-Yankton-Clay SD-
428 AM CST Sun Feb 24 2019

This Hazardous Weather Outlook is for northeast Nebraska, east
central South Dakota and southeast South Dakota.

.DAY ONE...Today and tonight.

Strong northwesterly winds will lead to areas of blowing snow and
significantly reduced visibility into early afternoon. Winds will
gradually diminish thru the afternoon hours.

Light snow will spread back across the area by late tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Light snow will continue into Monday morning, with light
accumulations possible, mainly north of I-90.

The active pattern continues thru the week with additional snow
chances.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

IAZ002-003-013-014-021-022-032-MNZ071-072-080-081-089-090-097-SDZ040-
251030-
Osceola-Dickinson-O'Brien-Clay IA-Cherokee-Buena Vista-Ida-
Lincoln MN-Lyon MN-Murray-Cottonwood-Nobles-Jackson-Pipestone-
Brookings-
428 AM CST Sun Feb 24 2019

This Hazardous Weather Outlook is for northwest Iowa, west central
Iowa, southwest Minnesota and east central South Dakota.

.DAY ONE...Today and tonight.

Strong northwesterly winds will lead to areas of near whiteout to
whiteout conditions, mainly in open areas, into the afternoon hours.
Those that must travel should be prepared for rapidly changing
visibility. Winds will gradually diminish by late afternoon and
evening.

Light snow will spread across the region later tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Light snow will continue into Monday morning, with light
accumulations possible, mainly north of I-90.

The active pattern continues thru the week with additional snow
chances.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Feb 24, 9:32 AM CST, 5 hours 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
932 AM CST SUN FEB 24 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0600 PM     SNOW             MENNO                   43.24N 97.57W
02/23/2019  M3.5 INCH        HUTCHINSON         SD   CO-OP OBSERVER

            CO-OP OBSERVER STATION MNOS2, MENNO.

1200 AM     SNOW             4 NW OKOBOJI            43.43N 95.18W
02/24/2019  M3.3 INCH        DICKINSON          IA   CO-OP OBSERVER

            CO-OP OBSERVER STATION VICI4, VICKS
            CORNER-SPIRIT LAKE IOWA.

0600 AM     SNOW             SIOUX CITY              42.40N 96.36W
02/24/2019  M3.0 INCH        WOODBURY           IA   OFFICIAL NWS OBS

0400 PM     SNOW             2 SSE SIOUX CENTER      43.05N 96.15W
02/23/2019  M1.3 INCH        SIOUX              IA   CO-OP OBSERVER

            CO-OP OBSERVER STATION SIXI4, 2 SE SIOUX
            CENTER.

0500 PM     SNOW             CONCORD                 42.38N 96.99W
02/23/2019  M0.5 INCH        DIXON              NE   CO-OP OBSERVER

            CO-OP OBSERVER STATION NESN1, CONCORD.

0700 AM     SNOW             SHELDON                 43.18N 95.85W
02/24/2019  M0.5 INCH        O'BRIEN            IA   CO-OP OBSERVER

            CO-OP OBSERVER STATION SHDI4, SHELDON.

0700 AM     SNOW             2 NNE LAKEFIELD         43.70N 95.15W
02/24/2019  M0.4 INCH        JACKSON            MN   CO-OP OBSERVER

            CO-OP OBSERVER STATION LKFM5, LAKEFIELD 2
            NE.

0600 AM     SNOW             EDGERTON                43.87N 96.13W
02/24/2019  M0.3 INCH        PIPESTONE          MN   COCORAHS

            COCORAHS STATION MN-PS-6, EDGERTON.

0700 AM     SNOW             ORANGE CITY             43.00N 96.05W
02/24/2019  M0.3 INCH        SIOUX              IA   CO-OP OBSERVER

            CO-OP OBSERVER STATION ORCI4, ORANGE CITY.

0700 AM     SNOW             1 S MARSHALL            44.44N 95.79W
02/24/2019  M0.2 INCH        LYON               MN   COCORAHS

            COCORAHS STATION MN-LY-2, MARSHALL 0.6 S.

0700 AM     SNOW             1 S BROOKINGS           44.29N 96.79W
02/24/2019  M0.1 INCH        BROOKINGS          SD   COCORAHS

            COCORAHS STATION SD-BK-43, 1 S BROOKINGS.

&&
Local storm report, Feb 24, 10:26 AM CST, 4 hours 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1026 AM CST SUN FEB 24 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1015 AM     SNOW             SUTHERLAND              42.97N 95.50W
02/24/2019  E8.5 INCH        O'BRIEN            IA   PUBLIC

            REPORT VIA SOCIAL MEDIA.

0950 AM     SNOW             REMSEN                  42.81N 95.98W
02/24/2019  M1.1 INCH        PLYMOUTH           IA   CO-OP OBSERVER

            CO-OP OBSERVER STATION RMSI4, REMSEN NO. 2.

0800 AM     SNOW             3 NW WINDOM             43.89N 95.16W
02/24/2019  M1.0 INCH        COTTONWOOD         MN   MESONET

            MESONET STATION WDOM5, 2 WNW WINDOM.

&&
Local storm report, Feb 24, 11:10 AM CST, 3 hours 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1110 AM CST SUN FEB 24 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0930 AM     SNOW             6 NNE ELK POINT         42.76N 96.65W
02/24/2019  M1.5 INCH        UNION              SD   COCORAHS

            COCORAHS STATION SD-UN-2, 2 W WESTFIELD.

0700 AM     SNOW             1 NNW CANTON            43.31N 96.59W
02/24/2019  M0.7 INCH        LINCOLN            SD   CO-OP OBSERVER

            CO-OP OBSERVER STATION CNNS2, CANTON.

0630 AM     SNOW             2 ESE YANKTON           42.88N 97.36W
02/24/2019  M0.5 INCH        YANKTON            SD   CO-OP OBSERVER

            CO-OP OBSERVER STATION YTNS2, YANKTON 2 E.

&&
Local storm report, Feb 24, 12:40 PM CST, 2 hours 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1240 PM CST SUN FEB 24 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1230 PM     SNOW             STORM LAKE              42.65N 95.19W
02/24/2019  E6.5 INCH        BUENA VISTA        IA   CO-OP OBSERVER

&&

Nearby

Wind Chill Advisories in South Dakota, 2019Wind Chill Advisories in Minnesota, 2019Wind Chill Advisories in Iowa, 2019Every wind chill advisory in 2019

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.