Alert archive / Utah / Winter Storm Warnings in 2020

Winter Storm Warning 4, NWS Salt Lake City, UT

March 23, 2020

NWS Salt Lake City, UT issued this winter storm warning at Mar 23, 2020, 3:32 PM MDT. It took effect at Mar 24, 2020, 3:00 PM MDT. It was in force for 48 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
Mar 23, 2020, 3:32 PM MDT (21:32 UTC)
In effect from
Mar 24, 2020, 3:00 PM MDT
Expired
Mar 26, 2020, 2:44 PM MDT
In force
48 hr
Issued by
NWS Salt Lake City, UT

The text

As transmitted.

626 
WWUS45 KSLC 232132
WSWSLC

URGENT - WINTER WEATHER MESSAGE
National Weather Service Salt Lake City UT
332 PM MDT Mon Mar 23 2020


UTZ007-241100-
/O.UPG.KSLC.WS.A.0002.200324T1800Z-200327T0300Z/
/O.NEW.KSLC.WS.W.0004.200324T2100Z-200326T2200Z/
Wasatch Mountains I-80 North-
Including the cities of Woodruff and Randolph
332 PM MDT Mon Mar 23 2020

...WINTER STORM WARNING IN EFFECT FROM 3 PM TUESDAY TO 4 PM MDT
THURSDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 10 to 20
  inches. Greatest accumulations just north of I-80 to east of the
  Ogden area.

* WHERE...Wasatch Mountains I-80 North.

* WHEN...From 3 PM Tuesday to 4 PM MDT Thursday.

* IMPACTS...Travel could be very difficult due to the potential
  for rapidly accumulating road snow.

* ADDITIONAL DETAILS...Heavy snow will begin near the Idaho border
  Tuesday afternoon, then spread south Tuesday night. A period of
  light snow will occur Wednesday, with heavy snow returning by
  Wednesday night. 
  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511.

&&

$$

UTZ008-241100-
/O.UPG.KSLC.WS.A.0002.200324T1800Z-200327T0300Z/
/O.NEW.KSLC.WS.W.0004.200325T0000Z-200327T0400Z/
Wasatch Mountains South of I-80-
Including the cities of Alta and Brighton
332 PM MDT Mon Mar 23 2020

...WINTER STORM WARNING IN EFFECT FROM 6 PM TUESDAY TO 10 PM MDT
THURSDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 12 to 26
  inches. 

* WHERE...Wasatch Mountains South of I-80.

* WHEN...From 6 PM Tuesday to 10 PM MDT Thursday.

* IMPACTS...Travel could be very difficult to impossible along all
  routes.

* ADDITIONAL DETAILS...Snow showers will begin Tuesday afternoon,
  with heavy snow arriving for Tuesday night through Wednesday
  morning. Snow will taper off for a period Wednesday afternoon
  through evening, then turn heavy again late Wednesday night
  through Thursday evening.
  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511.

&&

$$

UTZ006-241100-
/O.EXA.KSLC.WS.A.0002.200324T2200Z-200326T1000Z/
Wasatch Mountain Valleys-
Including the cities of Huntsville, Park City, and Heber City
332 PM MDT Mon Mar 23 2020

...WINTER STORM WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH
LATE WEDNESDAY NIGHT...

* WHAT...Heavy snow possible. Total snow accumulations of 6 to 
  12 inches possible.

* WHERE...Wasatch Mountain Valleys.

* WHEN...From Tuesday afternoon through late Wednesday night.

* IMPACTS...Travel could be very difficult due to accumulating
  road snow during periods of heavier snowfall. The hazardous 
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation. 

&&

$$

WYZ021-241100-
/O.CON.KSLC.WS.A.0002.200324T2200Z-200326T1000Z/
Southwest Wyoming-
Including the city of Evanston
332 PM MDT Mon Mar 23 2020

...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON
THROUGH LATE WEDNESDAY NIGHT...

* WHAT...Heavy snow possible. Total snow accumulations of 3 to 
  10 inches possible.

* WHERE...Southwest Wyoming.

* WHEN...From Tuesday afternoon through late Wednesday night.

* IMPACTS...Travel could be very difficult along all routes across
  Uinta county in southwest Wyoming.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation. 

&&

$$

UTZ009-241100-
/O.CON.KSLC.WS.A.0002.200324T1800Z-200327T0300Z/
Western Uinta Mountains-
Including the city of Mirror Lake Highway
332 PM MDT Mon Mar 23 2020

...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON
THROUGH THURSDAY EVENING...

* WHAT...Heavy snow possible. Total snow accumulations of 6 to 
  23 inches possible. Winds could gust as high as 35 mph.

* WHERE...Western Uinta Mountains.

* WHEN...From Tuesday afternoon through Thursday evening.

* IMPACTS...Travel could be very difficult to impossible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation. 

&&

$$

For more information from NOAA/National Weather Service visit...
http://weather.gov/saltlakecity

For information on potential travel impacts visit...
http://udottraffic.utah.gov/roadweatherforecast.aspx
7 follow-up statements
353 
WWUS45 KSLC 240951
WSWSLC

URGENT - WINTER WEATHER MESSAGE
National Weather Service Salt Lake City UT
351 AM MDT Tue Mar 24 2020

UTZ009-242200-
/O.UPG.KSLC.WS.A.0002.200324T1800Z-200327T0300Z/
/O.EXA.KSLC.WS.W.0004.200325T0000Z-200327T0400Z/
Western Uinta Mountains-
Including the city of Mirror Lake Highway
351 AM MDT Tue Mar 24 2020

...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 10 PM
MDT THURSDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 1 to 2
  feet. 

* WHERE...Western Uinta Mountains.

* WHEN...From 6 PM this evening to 10 PM MDT Thursday.

* IMPACTS...Travel could be very difficult to impossible.

* ADDITIONAL DETAILS...Occasional snow showers will continue
  today, with heavy snow arriving tonight through Wednesday
  morning. Snow will decrease Wednesday afternoon and evening, 
  then turn heavy again late Wednesday night through Thursday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511.

&&

$$

UTZ007-242200-
/O.CON.KSLC.WS.W.0004.200324T2100Z-200326T2200Z/
Wasatch Mountains I-80 North-
Including the cities of Woodruff and Randolph
351 AM MDT Tue Mar 24 2020

...WINTER STORM WARNING REMAINS IN EFFECT FROM 3 PM THIS
AFTERNOON TO 4 PM MDT THURSDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 10 to 20 
  inches.

* WHERE...Wasatch Mountains I-80 North.

* WHEN...From 3 PM this afternoon to 4 PM MDT Thursday.

* IMPACTS...Travel could be very difficult due to the potential 
  for rapidly accumulating road snow.

* ADDITIONAL DETAILS...Heavy snow will begin near the Idaho border
  this afternoon, then spread south tonight. A period of light 
  snow will occur Wednesday, with heavy snow returning by 
  Wednesday night.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511.

&&

$$

UTZ008-242200-
/O.CON.KSLC.WS.W.0004.200325T0000Z-200327T0400Z/
Wasatch Mountains South of I-80-
Including the cities of Alta and Brighton
351 AM MDT Tue Mar 24 2020

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO 10 PM MDT THURSDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 1 to 2
  feet.

* WHERE...Wasatch Mountains South of I-80.

* WHEN...From 6 PM this evening to 10 PM MDT Thursday.

* IMPACTS...Travel could be very difficult to impossible.

* ADDITIONAL DETAILS...Occasional snow showers will continue
  today, with heavy snow arriving tonight through Wednesday
  morning. Snow will decrease Wednesday afternoon and evening, 
  then turn heavy again late Wednesday night through Thursday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511.

&&

$$

UTZ006-WYZ021-242200-
/O.UPG.KSLC.WS.A.0002.200324T2200Z-200326T1000Z/
/O.NEW.KSLC.WW.Y.0014.200325T0000Z-200326T2200Z/
Wasatch Mountain Valleys-Southwest Wyoming-
Including the cities of Huntsville, Park City, Heber City, 
and Evanston
351 AM MDT Tue Mar 24 2020

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
4 PM MDT THURSDAY...

* WHAT...Snow expected. Total snow accumulations of 5 to 10 
  inches.

* WHERE...In Wyoming, Southwest Wyoming. In Utah, Wasatch 
  Mountain Valleys.

* WHEN...From 6 PM this evening to 4 PM MDT Thursday.

* IMPACTS...Travel could be very difficult at times during periods
  of heavier snowfall. 

* ADDITIONAL DETAILS...Occasional rain and snow showers will 
  continue today, with heavier snow arriving tonight through 
  Wednesday morning. Snow will decrease Wednesday afternoon and 
  evening, then turn heavy again late Wednesday night through 
  Thursday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511. 

For winter road conditions from the Wyoming Department of
Transportation, visit http://www.wyoroad.info or dial 511. 

&&

$$

For more information from NOAA/National Weather Service visit...
http://weather.gov/saltlakecity

For information on potential travel impacts visit...
http://udottraffic.utah.gov/roadweatherforecast.aspx
175 
WWUS45 KSLC 242035
WSWSLC

URGENT - WINTER WEATHER MESSAGE
National Weather Service Salt Lake City UT
235 PM MDT Tue Mar 24 2020

UTZ007-251100-
/O.CON.KSLC.WS.W.0004.200324T2100Z-200326T2200Z/
Wasatch Mountains I-80 North-
Including the cities of Woodruff and Randolph
235 PM MDT Tue Mar 24 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM MDT
THURSDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 10 to 
  20 inches.

* WHERE...Wasatch Mountains I-80 North.

* WHEN...From 3 PM this afternoon to 4 PM MDT Thursday.

* IMPACTS...Travel could be very difficult due to the potential 
  for rapidly accumulating road snow.

* ADDITIONAL DETAILS...Heavy snow will develop this evening and
  persist through the overnight hours. Snowfall will taper off 
  for a time Wednesday before redeveloping Wednesday night.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511.

&&

$$

UTZ008-009-251100-
/O.CON.KSLC.WS.W.0004.200325T0000Z-200327T0400Z/
Wasatch Mountains South of I-80-Western Uinta Mountains-
Including the cities of Alta, Brighton, and Mirror Lake Highway
235 PM MDT Tue Mar 24 2020

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO 10 PM MDT THURSDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 1 to 2 
  feet.

* WHERE...Wasatch Mountains South of I-80 and the Western Uinta 
  Mountains.

* WHEN...From 6 PM this evening to 10 PM MDT Thursday.

* IMPACTS...Travel could be very difficult to impossible.

* ADDITIONAL DETAILS...Snow, heavy at times, will develop this
  evening and continue overnight into Wednesday morning. Snow will
  decrease for a time during the day Wednesday before redeveloping
  Wednesday evening and continuing through Thursday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511.

&&

$$

UTZ006-WYZ021-251100-
/O.CON.KSLC.WW.Y.0014.200325T0000Z-200326T2200Z/
Wasatch Mountain Valleys-Southwest Wyoming-
Including the cities of Huntsville, Park City, Heber City, 
and Evanston
235 PM MDT Tue Mar 24 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS
EVENING TO 4 PM MDT THURSDAY...

* WHAT...Snow expected. Total snow accumulations of 5 to 10 
  inches.

* WHERE...In Wyoming, Southwest Wyoming. In Utah, Wasatch 
  Mountain Valleys.

* WHEN...From 6 PM this evening to 4 PM MDT Thursday.

* IMPACTS...Travel could be very difficult at times during 
  periods of heavier snowfall.

* ADDITIONAL DETAILS...Snow, heavy at times, will develop this
  evening and continue overnight. Snow will decrease during the
  day Wednesday before redeveloping Wednesday evening and 
  continuing through Thursday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511.

For winter road conditions from the Wyoming Department of
Transportation, visit http://www.wyoroad.info or dial 511.

&&

$$

For more information from NOAA/National Weather Service visit...
http://weather.gov/saltlakecity

For information on potential travel impacts visit...
http://udottraffic.utah.gov/roadweatherforecast.aspx
768 
WWUS45 KSLC 250919
WSWSLC

URGENT - WINTER WEATHER MESSAGE
National Weather Service Salt Lake City UT
319 AM MDT Wed Mar 25 2020

UTZ007-252200-
/O.CON.KSLC.WS.W.0004.000000T0000Z-200326T2200Z/
Wasatch Mountains I-80 North-
Including the cities of Woodruff and Randolph
319 AM MDT Wed Mar 25 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM MDT
THURSDAY...

* WHAT...Heavy snow. Total snow accumulations of 10 to 20 inches.

* WHERE...Wasatch Mountains I-80 North.

* WHEN...Until 4 PM MDT Thursday.

* IMPACTS...Travel could be very difficult due to the potential 
  for rapidly accumulating road snow.

* ADDITIONAL DETAILS...Heavy snow early this morning will taper
  off for a time today before redeveloping tonight.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511.

&&

$$

UTZ008-009-252200-
/O.CON.KSLC.WS.W.0004.000000T0000Z-200327T0400Z/
Wasatch Mountains South of I-80-Western Uinta Mountains-
Including the cities of Alta, Brighton, and Mirror Lake Highway
319 AM MDT Wed Mar 25 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM MDT
THURSDAY...

* WHAT...Heavy snow. Total snow accumulations of 1 to 2 feet.

* WHERE...Western Uinta Mountains and Wasatch Mountains South of 
  I-80.

* WHEN...Until 10 PM MDT Thursday.

* IMPACTS...Travel could be very difficult to impossible.

* ADDITIONAL DETAILS...Heavy snow this morning will decrease for 
  a time during the day today before redeveloping this evening and
  continuing through Thursday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511.

&&

$$

UTZ006-WYZ021-252200-
/O.CON.KSLC.WW.Y.0014.000000T0000Z-200326T2200Z/
Wasatch Mountain Valleys-Southwest Wyoming-
Including the cities of Huntsville, Park City, Heber City, 
and Evanston
319 AM MDT Wed Mar 25 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM MDT
THURSDAY...

* WHAT...Snow. Total snow accumulations of 5 to 10 inches.

* WHERE...In Wyoming, Southwest Wyoming. In Utah, Wasatch 
  Mountain Valleys.

* WHEN...Until 4 PM MDT Thursday.

* IMPACTS...Travel could be very difficult at times during 
  periods of heavier snowfall.

* ADDITIONAL DETAILS...Snow, heavy at times this morning, will
  decrease during the day today before redeveloping this evening 
  and continuing through Thursday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511.

For winter road conditions from the Wyoming Department of
Transportation, visit http://www.wyoroad.info or dial 511.

&&

$$

For more information from NOAA/National Weather Service visit...
http://weather.gov/saltlakecity

For information on potential travel impacts visit...
http://udottraffic.utah.gov/roadweatherforecast.aspx
613 
WWUS45 KSLC 252045
WSWSLC

URGENT - WINTER WEATHER MESSAGE
National Weather Service Salt Lake City UT
245 PM MDT Wed Mar 25 2020

UTZ007-260600-
/O.CON.KSLC.WS.W.0004.000000T0000Z-200326T2200Z/
Wasatch Mountains I-80 North-
Including the cities of Woodruff and Randolph
245 PM MDT Wed Mar 25 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM MDT
THURSDAY...

* WHAT...Heavy snow. Additional snow accumulations of 4 to 8 
  inches.

* WHERE...Wasatch Mountains I-80 North.

* WHEN...Until 4 PM MDT Thursday.

* IMPACTS...Travel could be very difficult due to the potential 
  for rapidly accumulating road snow.

* ADDITIONAL DETAILS...Snow will redevelop this evening and
  continue overnight before tapering off during the day Thursday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511.

&&

$$

UTZ008-009-260600-
/O.CON.KSLC.WS.W.0004.000000T0000Z-200327T0400Z/
Wasatch Mountains South of I-80-Western Uinta Mountains-
Including the cities of Alta, Brighton, and Mirror Lake Highway
245 PM MDT Wed Mar 25 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM MDT
THURSDAY...

* WHAT...Heavy snow. Additional snow accumulations of 6 to 12
  inches.

* WHERE...Western Uinta Mountains and Wasatch Mountains South of 
  I-80.

* WHEN...Until 10 PM MDT Thursday.

* IMPACTS...Travel could be very difficult to impossible.

* ADDITIONAL DETAILS...Snow will redevelop this evening and
  continue overnight before tapering off during the day Thursday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511.

&&

$$

UTZ006-WYZ021-260600-
/O.CON.KSLC.WW.Y.0014.000000T0000Z-200326T2200Z/
Wasatch Mountain Valleys-Southwest Wyoming-
Including the cities of Huntsville, Park City, Heber City, 
and Evanston
245 PM MDT Wed Mar 25 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM MDT
THURSDAY...

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

* WHERE...In Wyoming, Southwest Wyoming. In Utah, Wasatch 
  Mountain Valleys.

* WHEN...Until 4 PM MDT Thursday.

* IMPACTS...Travel could be very difficult at times during 
  periods of heavier snowfall.

* ADDITIONAL DETAILS...Snow will redevelop this evening and
  continue overnight before tapering off during the day Thursday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511.

For winter road conditions from the Wyoming Department of
Transportation, visit http://www.wyoroad.info or dial 511.

&&

$$

For more information from NOAA/National Weather Service visit...
http://weather.gov/saltlakecity

For information on potential travel impacts visit...
http://udottraffic.utah.gov/roadweatherforecast.aspx
221 
WWUS45 KSLC 260429
WSWSLC

URGENT - WINTER WEATHER MESSAGE
National Weather Service Salt Lake City UT
1029 PM MDT Wed Mar 25 2020


UTZ007-261100-
/O.CON.KSLC.WS.W.0004.000000T0000Z-200326T2200Z/
Wasatch Mountains I-80 North-
Including the cities of Woodruff and Randolph
1029 PM MDT Wed Mar 25 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM MDT
THURSDAY...

* WHAT...Heavy snow. Additional snow accumulations of 2 to 6 
  inches.

* WHERE...Wasatch Mountains I-80 North.

* WHEN...Until 4 PM MDT Thursday.

* IMPACTS...Plan on slippery road conditions.

* ADDITIONAL DETAILS...Snow will taper off across the north
  portion Thursday morning, then decrease across the south 
  portion late morning through the afternoon. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511.

&&

$$

UTZ008-009-261100-
/O.CON.KSLC.WS.W.0004.000000T0000Z-200327T0400Z/
Wasatch Mountains South of I-80-Western Uinta Mountains-
Including the cities of Alta, Brighton, and Mirror Lake Highway
1029 PM MDT Wed Mar 25 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM MDT
THURSDAY...

* WHAT...Heavy snow. Additional snow accumulations of 3 to 8 
  inches.

* WHERE...Western Uinta Mountains and Wasatch Mountains South of 
  I-80.

* WHEN...Until 10 PM MDT Thursday.

* IMPACTS...Plan on slippery road conditions.

* ADDITIONAL DETAILS...Snow will continue overnight before
  tapering off Thursday afternoon and evening. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511.

&&

$$

UTZ006-WYZ021-261100-
/O.CON.KSLC.WW.Y.0014.000000T0000Z-200326T2200Z/
Wasatch Mountain Valleys-Southwest Wyoming-
Including the cities of Huntsville, Park City, Heber City, 
and Evanston
1029 PM MDT Wed Mar 25 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM MDT
THURSDAY...

* WHAT...Snow. Additional snow accumulations of 1 to 3 inches.

* WHERE...In Wyoming, Southwest Wyoming. In Utah, Wasatch 
  Mountain Valleys.

* WHEN...Until 4 PM MDT Thursday.

* IMPACTS...Plan on slippery road conditions.

* ADDITIONAL DETAILS...Snow will continue overnight before 
  tapering off during the day Thursday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511. 

For winter road conditions from the Wyoming Department of
Transportation, visit http://www.wyoroad.info or dial 511. 

&&

$$

For more information from NOAA/National Weather Service visit...
http://weather.gov/saltlakecity

For information on potential travel impacts visit...
http://udottraffic.utah.gov/roadweatherforecast.aspx
714 
WWUS45 KSLC 261111
WSWSLC

URGENT - WINTER WEATHER MESSAGE
National Weather Service Salt Lake City UT
511 AM MDT Thu Mar 26 2020


UTZ007-261915-
/O.CON.KSLC.WS.W.0004.000000T0000Z-200326T2200Z/
Wasatch Mountains I-80 North-
Including the cities of Woodruff and Randolph
511 AM MDT Thu Mar 26 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM MDT THIS
AFTERNOON...

* WHAT...Heavy snow. Additional snow accumulations of 1 to 4 
  inches.

* WHERE...Wasatch Mountains I-80 North.

* WHEN...Until 4 PM MDT Thursday.

* IMPACTS...Plan on slippery road conditions.

* ADDITIONAL DETAILS...Snow will continue to taper off across the
  north portion this morning, then decrease across the south
  portion this afternoon..

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511.

&&

$$

UTZ008-009-261915-
/O.CON.KSLC.WS.W.0004.000000T0000Z-200327T0400Z/
Wasatch Mountains South of I-80-Western Uinta Mountains-
Including the cities of Alta, Brighton, and Mirror Lake Highway
511 AM MDT Thu Mar 26 2020

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM MDT THIS
EVENING...

* WHAT...Heavy snow. Additional snow accumulations of 3 to 5 
  inches.

* WHERE...Western Uinta Mountains and Wasatch Mountains South of 
  I-80.

* WHEN...Until 10 PM MDT Thursday.

* IMPACTS...Plan on slippery road conditions.

* ADDITIONAL DETAILS...Additional heavy at times snowfall is
  expected to occur this morning, prior to turning more showery
  this afternoon and into this evening.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511.

&&

$$

UTZ006-WYZ021-261915-
/O.CON.KSLC.WW.Y.0014.000000T0000Z-200326T2200Z/
Wasatch Mountain Valleys-Southwest Wyoming-
Including the cities of Huntsville, Park City, Heber City, 
and Evanston
511 AM MDT Thu Mar 26 2020

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM MDT THIS
AFTERNOON...

* WHAT...Snow. Additional snow accumulations of up to 2 inches.

* WHERE...In Wyoming, Southwest Wyoming. In Utah, Wasatch 
  Mountain Valleys.

* WHEN...Until 4 PM MDT Thursday.

* IMPACTS...Plan on slippery road conditions.

* ADDITIONAL DETAILS...Additional heavy at times snowfall will
  continue into mid morning, prior to turning more showery for 
  the midday/afternoon hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For graphical depictions of the snowfall forecast, including
Official NWS Forecast, High End Amount, and Low End Amount, visit
weather.gov/slc/winter.

For winter road conditions from the Utah Department of
Transportation, visit
http://www.udottraffic.utah.gov/roadweatherforecast.aspx or dial
511. 

For winter road conditions from the Wyoming Department of
Transportation, visit http://www.wyoroad.info or dial 511. 

&&

$$

For more information from NOAA/National Weather Service visit...
http://weather.gov/saltlakecity

For information on potential travel impacts visit...
http://udottraffic.utah.gov/roadweatherforecast.aspx
923 
WWUS45 KSLC 262044
WSWSLC

URGENT - WINTER WEATHER MESSAGE
National Weather Service Salt Lake City UT
244 PM MDT Thu Mar 26 2020

UTZ007-262145-
/O.CAN.KSLC.WS.W.0004.000000T0000Z-200326T2200Z/
Wasatch Mountains I-80 North-
Including the cities of Woodruff and Randolph
244 PM MDT Thu Mar 26 2020

...WINTER STORM WARNING IS CANCELLED...

Occasional snow showers will persist into this evening, however
very little additional snow accumulation is expected.

$$

UTZ008-009-262145-
/O.CAN.KSLC.WS.W.0004.000000T0000Z-200327T0400Z/
Wasatch Mountains South of I-80-Western Uinta Mountains-
Including the cities of Alta, Brighton, and Mirror Lake Highway
244 PM MDT Thu Mar 26 2020

...WINTER STORM WARNING IS CANCELLED...

Occasional snow showers will persist into this evening, however
very little additional snow accumulation is expected.

$$

UTZ006-WYZ021-262145-
/O.CAN.KSLC.WW.Y.0014.000000T0000Z-200326T2200Z/
Wasatch Mountain Valleys-Southwest Wyoming-
Including the cities of Huntsville, Park City, Heber City, 
and Evanston
244 PM MDT Thu Mar 26 2020

...WINTER WEATHER ADVISORY IS CANCELLED...

Occasional snow showers will persist into this evening, however
very little additional snow accumulation is expected.

$$

For more information from NOAA/National Weather Service visit...
http://weather.gov/saltlakecity

For information on potential travel impacts visit...
http://udottraffic.utah.gov/roadweatherforecast.aspx

What forecasters said that day

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

NWS Salt Lake City, UT wrote its last area forecast discussion before this winter storm warning went out at Mar 23, 10:18 AM MDT, 5 hours 14 minutes earlier.

Area forecast discussion, Mar 23, 10:18 AM MDT, 5 hours 14 minutes before
Area Forecast Discussion
National Weather Service Salt Lake City UT
1018 AM MDT Mon Mar 23 2020

.SYNOPSIS...A storm system will track east through southern and
eastern Utah today. A significantly colder and stronger storm
system will impact mainly northern Utah late Tuesday into
Wednesday, then the remainder of the state Thursday into Friday.

&&

.DISCUSSION...The center of the upper low currently positioned
over southern Nevada will continue east across southern
Utah/Arizona as an open/weakening trough through early this
evening. Anticipating an area of light to moderate valley
rain/mountain snow associated with the trough across the southern
third of Utah. Low-level cold advection supported by the core of
the mid-level cold air, dynamic support from the open wave trough
and the favorably positioned upper jet through Arizona and
southeast Utah will create sufficient lift to produce widespread
precip today.

Focus will shift to northern Utah and the potential for a
significant winter weather event midweek. The next upper low
advancing south along the BritCol coast will take up a position
along the Pacific Northwest coast later tonight through Tuesday.

The associated low-level baroclinic zone will eventually arrive
over far northern Utah early Tuesday, then slowly advance south
across the north during the day Tuesday. Convergence into this
low-level boundary with weak shortwaves ejecting out of the
coastal upper low will produce generally light precip near the
boundary Tuesday morning through early afternoon.

Precipitation intensity and areal coverage will begin to increase
late Tuesday, with areas of moderate to locally heavy precip
possible Tuesday night through early Wednesday across northern
Utah. Frontogenesis along the low-level baroclinic zone along with
increasingly strong shortwaves ejecting over the top of the
boundary and favorable jet support will result in deep synoptic-
scale in vicinity of the low-level boundary.

The big issue in this situation will be where and when the
baroclinic zone stalls as the models have been indicating the
past several model runs. The current model iteration suggests the
boundary will stall across the central/southern Wasatch Front and
adjacent mountains. At this point confidence is fairly high that
moderate to heavy precip will concentrate along and immediately
north of this boundary, with somewhat less confidence as to where
that will eventually be. We leave the current winter storm watch
as is this morning. No updates planned to the routine forecast at
this time.

&&

.AVIATION...Minimal operational weather concerns at the SLC
through 18Z. Scattered showers are expected to develop in the
vicinity of the terminal after 18Z, with occasional mountain
obscuration developing thereafter through about 21Z, with a 30%
chance of lingering through 23Z. Moderately gusty and erratic winds
are possible with any passing showers within the 18-23Z
timeframe.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...Winter Storm Watch from Tuesday afternoon through Thursday
     evening for UTZ007>009.

WY...Winter Storm Watch from Tuesday afternoon through late Wednesday
     night for WYZ021.

&&

PUBLIC...CONGER
AVIATION...STRUTHWOLF

For more information from NOAA's National Weather Service visit...
http://weather.gov/saltlakecity

For frequently asked questions about the Area Forecast Discussion
visit...
http://weather.gov/saltlakecity/general/afd_faqs.php
Hazardous weather outlook, Mar 23, 6:13 AM MDT, 9 hours 19 minutes before
Hazardous Weather Outlook
National Weather Service Salt Lake City UT
613 AM MDT Mon Mar 23 2020

UTZ001>016-019>021-517-518-WYZ021-241300-
Cache Valley/Utah Portion-Northern Wasatch Front-
Salt Lake and Tooele Valleys-Southern Wasatch Front-
Great Salt Lake Desert and Mountains-Wasatch Mountain Valleys-
Wasatch Mountains I-80 North-Wasatch Mountains South of I-80-
Western Uinta Mountains-Wasatch Plateau/Book Cliffs-
Western Uinta Basin-Castle Country-San Rafael Swell-
Sanpete/Sevier Valleys-West Central Utah-Southwest Utah-
Utahs Dixie and Zion National Park-South Central Utah-
Glen Canyon Recreation Area/Lake Powell-Central Mountains-
Southern Mountains-Southwest Wyoming-
613 AM MDT Mon Mar 23 2020

This Hazardous Weather Outlook is for the western two thirds of
Utah and southwest Wyoming.

.DAY ONE...Today and Tonight

A storm system will bring widespread valley rain and mountain
snow to the area today, especially across southern, central, and
eastern Utah. Generally light accumulations are expected on the
higher terrain, except across the mountains of far southern Utah
such as the Pine Valley Mountains and near Brian Head where
locally heavy snow will be possible.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

A couple of other storm systems Tuesday through at least Thursday
will bring colder air to the area, resulting in the potential for
snow to the valley floors. A cold front will stall across northern
Utah and southwest Wyoming late Tuesday through Wednesday which
will serve as a focus for significant precipitation. Heavy snow
is expected across portions of the northern Utah mountains and
southwest Wyoming along this boundary, with generally minor
accumulations possible in the lower valleys. The cold front will
then shift south through the rest of Utah Thursday through
Thursday night, with snow expected across the area.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

For more information from NOAA/s National Weather Service visit...
http://weather.gov/saltlakecity

For information on potential road travel impacts visit...
http://www.udottraffic.utah.gov/roadweatherforecast.aspx

The office that day

Everything else NWS Salt Lake City, UT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 23, 3:55 AM MDTWinter Storm WatchSLC24 hr

Nearby

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

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.