Alert archive / Oregon / Winter Storm Warnings in 2017

Winter Storm Warning 10, NWS Medford, OR

February 23, 2017Curry County, Josephine County, Oregon; Siskiyou County, California

NWS Medford, OR issued this winter storm warning at Feb 23, 2017, 2:09 PM PST for Curry County, Josephine County, Oregon; Siskiyou County, California. It took effect at Feb 24, 2017, 1:00 PM PST. It was in force for 13 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
Feb 23, 2017, 2:09 PM PST (22:09 UTC)
In effect from
Feb 24, 2017, 1:00 PM PST
Expired
Feb 25, 2017, 1:36 AM PST
In force
13 hr
Issued by
NWS Medford, OR

Counties Siskiyou County, CA, Curry County, OR, Josephine County, OR

The radar

The Medford radar (KMAX), 60 km from the middle of the area, began a volume at 22:09 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

Medford/Jackson, OR (KMFR), launched 12:00Z, 10.2 hours before the alert went out and 58 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, Medford/Jackson, OR at 12:00Z on 2017-02-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLLFCEL10008507005003002001001 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, Medford/Jackson, OR at 12:00Z on 2017-02-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 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
1 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
665 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
60 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

628 
WWUS46 KMFR 232209
WSWMFR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Medford OR
209 PM PST Thu Feb 23 2017

...Low elevation snow possible Friday into Saturday...

.A low pressure system moving southward along the Pacific
Northwest coast Friday into Saturday will bring significant 
snowfall for portions of far southwestern Oregon and far 
northwestern California.

ORZ021-232315-
/O.CAN.KMFR.WS.A.0009.170224T1800Z-170225T1800Z/
South Central Oregon Coast-
209 PM PST Thu Feb 23 2017

...WINTER STORM WATCH IS CANCELLED...

The National Weather Service in Medford has cancelled the Winter
Storm Watch. 

Although there will be snow for areas above 1500 feet,
accumulations are not expected to bring significant impacts.

$$

ORZ024-240615-
/O.UPG.KMFR.WS.A.0009.170224T1800Z-170225T1800Z/
/O.NEW.KMFR.WW.Y.0020.170224T2100Z-170225T1800Z/
/O.NEW.KMFR.WS.W.0010.170224T2100Z-170225T1800Z/
Eastern Curry County and Josephine County-
Including the city of Cave Junction
209 PM PST Thu Feb 23 2017

...WINTER STORM WARNING IN EFFECT FROM 1 PM FRIDAY TO 10 AM PST
SATURDAY...
...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM FRIDAY TO 10 AM
PST SATURDAY...

The National Weather Service in Medford has upgraded the Winter
Storm Watch to a Winter Storm Warning above 2000 feet for Heavy 
Snow and a Winter Weather Advisory above 1500 feet for snow which
is in effect from 1 PM Friday to 10 AM PST Saturday.

* Snow accumulations...6 to 12 inches above 2000 feet. 1 to 3 
inches above 1500 feet. 

* Timing...Snow will begin late Friday morning and continue
  through Friday night. Snow will be moderate to heavy at times
  Friday evening through Friday night.

* Locations in the warning include much of Curry County Coastal
  Mountains. 

* Locations in the advisory include...The Sexton Summit to Canyon
  Creek area on Interstate 5, Highway 199 in the Illinois Valley
  including Selma, Cave Junction, Obrien, and Takilma.

* Impacts...Traveling on 199 or Interstate 5 will become difficult
  due to snow on roads...particularly at night. In the higher
  elevations, those working or recreating will see dangerous conditions
  due to snow and low visibilities as well as hazardous roads.

Precautionary/preparedness actions...

* Travel is strongly discouraged because of dangerous conditions.

* If you must travel, keep tire chains, a flashlight, blankets, 
  food, water, medications, and a fully charged phone with you. 

* The safest place during a winter storm is indoors.

* A Winter Storm Warning means that severe winter weather is
  imminent and poses a threat to life and property. Take
  protective action now. 

&&

$$

CAZ080-240615-
/O.UPG.KMFR.WS.A.0009.170224T1800Z-170225T1800Z/
/O.NEW.KMFR.WW.Y.0020.170224T2100Z-170225T1800Z/
/O.NEW.KMFR.WS.W.0010.170224T2100Z-170225T1800Z/
Western Siskiyou County-
209 PM PST Thu Feb 23 2017

...WINTER STORM WARNING IN EFFECT FROM 1 PM FRIDAY TO 10 AM PST
SATURDAY...
...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM FRIDAY TO 10 AM
PST SATURDAY...

The National Weather Service in Medford has upgraded the Winter
Storm Watch to a Winter Storm Warning above 2000 feet for Heavy 
Snow and a Winter Weather Advisory above 1500 feet for snow which
is in effect from 1 PM Friday to 10 AM PST Saturday. 

* Snow accumulations...4 to 8 inches above 2500 feet. 1 to 3
  inches above 1500. 

* Elevation...Above 1500 feet.

* Timing...Snow will begin late Friday morning and continue
  through Saturday morning. Snowfall rates will become moderate 
  to heavy Friday night through Saturday morning. 

* Locations include...Higher portions of highway 96 west and 
  south of Seiad Valley. Elevations above 1500 feet near Happy 
  Camp and Somes Bar. Higher portions of Sawyers Bar Road. 

* Impacts...Those traveling, working, or recreating in this area
  will see difficult travel conditions due to snowfall that will
  create slippery, snow covered roads, and reduce visibilities to
  less than a half mile or less, at times.

Precautionary/preparedness actions...

* Travel is strongly discouraged because of dangerous conditions.

* If you must travel, keep tire chains, a flashlight, blankets, 
  food, water, medications, and a fully charged phone with you. 

* The safest place during a winter storm is indoors.

* A Winter Storm Warning means that severe winter weather is
  imminent and poses a threat to life and property. Take
  protective action now. 


&&

$$

ORZ022-240615-
/O.UPG.KMFR.WS.A.0009.170224T1800Z-170225T1800Z/
/O.NEW.KMFR.WS.W.0010.170224T2100Z-170225T1800Z/
Curry County Coast-
209 PM PST Thu Feb 23 2017

...WINTER STORM WARNING IN EFFECT FROM 1 PM FRIDAY TO 10 AM PST
SATURDAY...

The National Weather Service in Medford has upgraded the Winter
Storm Watch to a Winter Storm Warning above 2000 feet for Heavy 
Snow which is in effect from 1 PM Friday to 10 AM PST Saturday. 

* Snow accumulations...6 to 12 inches. 

* Elevation...Above 2000 feet.

* Timing...Snow showers will begin late Friday morning and
  continue through Friday night. Snowfall rates will become 
  moderate to heavy Friday evening through Friday night. 

* Locations include...Curry County Coastal Mountains.

* Impacts...Those traveling, working, or recreating in this area
  will see difficult travel conditions due to snowfall that will
  create slippery, snow covered roads, and reduce visibilities to
  less than a half mile or less, at times.

Precautionary/preparedness actions...

* Travel is strongly discouraged because of dangerous conditions.

* If you must travel, keep tire chains, a flashlight, blankets, 
  food, water, medications, and a fully charged phone with you. 

* The safest place during a winter storm is indoors.

* A Winter Storm Warning means that severe winter weather is
  imminent and poses a threat to life and property. Take
  protective action now. 

&&

$$

ORZ023-026-240615-
/O.NEW.KMFR.WW.Y.0020.170224T2100Z-170225T1800Z/
Central Douglas County-Jackson County-
209 PM PST Thu Feb 23 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM FRIDAY TO 10 AM
PST SATURDAY...

The National Weather Service in Medford has issued a Winter
Weather Advisory for Snow above 1500 feet which is in effect from
1 PM Friday to 10 AM PST Saturday. 

* Snow accumulations...1 to 3 inches.

* Elevation...above 1500 feet.

* Timing...Snow showers will begin late Friday morning and
  continue through Friday night. Snowfall rates will become moderate
  to heavy Friday evening through Friday night.


* Locations include...Interstate 5 area between Sexton Mountain
  Pass and Canyon Creek Pass...Oregon Route 227 near the Jackson
  and Douglas County line...and Rural areas of southern Douglas
  County and northern Jackson County.

* Impacts...Roads will become slippery. Blowing snow will reduce 
  visibility. 

* View the hazard area in detail at 
  http://weather.gov/medford/hazard 

Precautionary/preparedness actions...

* Slow down and allow extra time to reach your destination.

* Carry tire chains and be prepared for snow covered roads and 
  limited visibilities. 

* See weather.gov/Medford/Cams for latest road conditions.

* A Winter Weather Advisory for snow means that periods of snow
  will cause travel difficulties. 

&&

$$
4 follow-up statements
163 
WWUS46 KMFR 240559
WSWMFR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Medford OR
959 PM PST Thu Feb 23 2017

ORZ024-241400-
/O.CON.KMFR.WS.W.0010.170224T2100Z-170225T1800Z/
/O.CON.KMFR.WW.Y.0020.170224T2100Z-170225T1800Z/
Eastern Curry County and Josephine County-
Including the city of Cave Junction
959 PM PST Thu Feb 23 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 PM FRIDAY TO
10 AM PST SATURDAY...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM FRIDAY TO
10 AM PST SATURDAY...

* Snow accumulations...6 to 12 inches above 2000 feet. 1 to 3 
  inches above 1500 feet.

* Timing...Snow will begin late Friday morning and continue 
  through Friday night. Snow will be moderate to heavy at times 
  Friday evening through Friday night. 

* Locations in the warning include much of Curry County Coastal 
  Mountains. 

* Locations in the advisory include...The Sexton Summit to 
  Canyon Creek area on Interstate 5, Highway 199 in the Illinois 
  Valley including Selma, Cave Junction, Obrien, and Takilma. 

* Impacts...Traveling on 199 or Interstate 5 will become 
  difficult due to snow on roads...particularly at night. In the 
  higher elevations, those working or recreating will see 
  dangerous conditions due to snow and low visibilities as well 
  as hazardous roads. 

Precautionary/preparedness actions...

* Travel is strongly discouraged because of dangerous conditions.

* If you must travel, keep tire chains, a flashlight, blankets, 
  food, water, medications, and a fully charged phone with you. 

* The safest place during a winter storm is indoors.

* A Winter Storm Warning means that severe winter weather is 
  imminent and poses a threat to life and property. Take 
  protective action now. 

&&

$$

CAZ080-241400-
/O.CON.KMFR.WS.W.0010.170224T2100Z-170225T1800Z/
/O.CON.KMFR.WW.Y.0020.170224T2100Z-170225T1800Z/
Western Siskiyou County-
959 PM PST Thu Feb 23 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 PM FRIDAY TO
10 AM PST SATURDAY...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM FRIDAY TO
10 AM PST SATURDAY...

* Snow accumulations...4 to 8 inches above 2500 feet. 1 to 3 
  inches above 1500. 

* Elevation...Above 1500 feet.

* Timing...Snow will begin late Friday morning and continue 
  through Saturday morning. Snowfall rates will become moderate 
  to heavy Friday night through Saturday morning. 

* Locations include...Higher portions of highway 96 west and 
  south of Seiad Valley. Elevations above 1500 feet near Happy 
  Camp and Somes Bar. Higher portions of Sawyers Bar Road. 

* Impacts...Those traveling, working, or recreating in this area 
  will see difficult travel conditions due to snowfall that will 
  create slippery, snow covered roads, and reduce visibilities 
  to less than a half mile or less, at times. 

Precautionary/preparedness actions...

* Travel is strongly discouraged because of dangerous conditions.

* If you must travel, keep tire chains, a flashlight, blankets, 
  food, water, medications, and a fully charged phone with you. 

* The safest place during a winter storm is indoors.

* A Winter Storm Warning means that severe winter weather is 
  imminent and poses a threat to life and property. Take 
  protective action now. 

&&

$$

ORZ022-241400-
/O.CON.KMFR.WS.W.0010.170224T2100Z-170225T1800Z/
Curry County Coast-
959 PM PST Thu Feb 23 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 PM FRIDAY TO
10 AM PST SATURDAY...

* Snow accumulations...6 to 12 inches.

* Elevation...Above 2000 feet.

* Timing...Snow showers will begin late Friday morning and 
  continue through Friday night. Snowfall rates will become 
  moderate to heavy Friday evening through Friday night. 

* Locations include...Curry County Coastal Mountains.

* Impacts...Those traveling, working, or recreating in this area 
  will see difficult travel conditions due to snowfall that will 
  create slippery, snow covered roads, and reduce visibilities 
  to less than a half mile or less, at times. 

Precautionary/preparedness actions...

* Travel is strongly discouraged because of dangerous conditions.

* If you must travel, keep tire chains, a flashlight, blankets, 
  food, water, medications, and a fully charged phone with you. 

* The safest place during a winter storm is indoors.

* A Winter Storm Warning means that severe winter weather is 
  imminent and poses a threat to life and property. Take 
  protective action now. 

&&

$$

ORZ023-026-241400-
/O.CON.KMFR.WW.Y.0020.170224T2100Z-170225T1800Z/
Central Douglas County-Jackson County-
959 PM PST Thu Feb 23 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM FRIDAY TO
10 AM PST SATURDAY...

* Snow accumulations...1 to 3 inches.

* Elevation...above 1500 feet.

* Timing...Snow showers will begin late Friday morning and 
  continue through Friday night. Snowfall rates will become 
  moderate to heavy Friday evening through Friday night. 

* Locations include...Interstate 5 area between Sexton Mountain 
  Pass and Canyon Creek Pass...Oregon Route 227 near the Jackson 
  and Douglas County line...and Rural areas of southern Douglas 
  County and northern Jackson County. 

* Impacts...Roads will become slippery. Blowing snow will reduce 
  visibility. 

* View the hazard area in detail at 
  http://weather.gov/medford/hazard 

Precautionary/preparedness actions...

* Slow down and allow extra time to reach your destination.

* Carry tire chains and be prepared for snow covered roads and 
  limited visibilities. 

* See weather.gov/Medford/Cams for latest road conditions.

* A Winter Weather Advisory for snow means that periods of snow 
  will cause travel difficulties. 

&&

$$
Sven
661 
WWUS46 KMFR 241100
WSWMFR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Medford OR
300 AM PST Fri Feb 24 2017


ORZ024-250015-
/O.CON.KMFR.WS.W.0010.170224T2100Z-170225T1800Z/
/O.CON.KMFR.WW.Y.0020.170224T2100Z-170225T1800Z/
Eastern Curry County and Josephine County-
Including the city of Cave Junction
300 AM PST Fri Feb 24 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 PM THIS
AFTERNOON TO 10 AM PST SATURDAY...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THIS
AFTERNOON TO 10 AM PST SATURDAY...

* Snow accumulations...5 to 10 inches in the warning area above
  2000 feet. 1 to 3 inches in the advisory area above 1500 feet.

* Timing...Snow will begin late this morning and continue through
  tonight. Snow will be moderate to heavy at times this evening
  through tonight.

* Locations in the warning include much of the Kalmiopsis
  Mountains.

* Locations in the advisory include...The Sexton Summit to Canyon
  Creek area on Interstate 5, Highway 199 in the Illinois Valley
  including Selma, Cave Junction, Obrien, and Takilma.

* Impacts...Traveling on 199 or Interstate 5 will become 
  difficult due to snow on roads...particularly at night. In the 
  higher elevations, those working or recreating will see 
  dangerous conditions due to snow and low visibilities as well 
  as hazardous roads. 

Precautionary/preparedness actions...

* Travel is strongly discouraged because of dangerous conditions.

* If you must travel, keep tire chains, a flashlight, blankets, 
  food, water, medications, and a fully charged phone with you. 

* The safest place during a winter storm is indoors.

* A Winter Storm Warning means that severe winter weather is 
  imminent and poses a threat to life and property. Take 
  protective action now. 

&&

$$

CAZ080-250015-
/O.CON.KMFR.WS.W.0010.170224T2100Z-170225T1800Z/
/O.CON.KMFR.WW.Y.0020.170224T2100Z-170225T1800Z/
Western Siskiyou County-
300 AM PST Fri Feb 24 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 PM THIS
AFTERNOON TO 10 AM PST SATURDAY...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THIS
AFTERNOON TO 10 AM PST SATURDAY...

* Snow accumulations...4 to 6 inches in the warning area above
  2500 feet. 1 to 3 inches in the advisory area above 1500 feet. 

* Elevation...Above 1500 feet.

* Timing...Snow will begin late this morning and continue through
  Saturday morning. Snowfall rates will become moderate to heavy
  tonight through Saturday morning. 

* Locations in the advisory include...Highway 96 from Happy Camp
  to Somes Bar. 

* Locations in the warning area include...higher portions of
  Highway 96 west and south of Seiad Valley. Elevations above 1500
  feet near Happy Camp and Somes Bar. Higher portions of Sawyers
  Bar Road.

* Impacts...Those traveling, working, or recreating in this area 
  will see difficult travel conditions due to snowfall that will 
  create slippery, snow covered roads, and reduce visibilities 
  to less than a half mile or less, at times. 

Precautionary/preparedness actions...

* Travel is strongly discouraged because of dangerous conditions.

* If you must travel, keep tire chains, a flashlight, blankets, 
  food, water, medications, and a fully charged phone with you. 

* The safest place during a winter storm is indoors.

* A Winter Storm Warning means that severe winter weather is 
  imminent and poses a threat to life and property. Take 
  protective action now. 

&&

$$

ORZ022-250015-
/O.CON.KMFR.WS.W.0010.170224T2100Z-170225T1800Z/
Curry County Coast-
300 AM PST Fri Feb 24 2017

...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 PM THIS
AFTERNOON TO 10 AM PST SATURDAY...

* Snow accumulations...6 to 12 inches.

* Elevation...Above 2000 feet.

* Timing...Snow showers will begin late this morning and continue
  through tonight. Snowfall rates will become moderate to heavy
  this evening through tonight. 

* Locations include...Curry County Coastal Mountains.

* Impacts...Those traveling, working, or recreating in this area 
  will see difficult travel conditions due to snowfall that will 
  create slippery, snow covered roads, and reduce visibilities 
  to less than a half mile or less, at times. 

Precautionary/preparedness actions...

* Travel is strongly discouraged because of dangerous conditions.

* If you must travel, keep tire chains, a flashlight, blankets, 
  food, water, medications, and a fully charged phone with you. 

* The safest place during a winter storm is indoors.

* A Winter Storm Warning means that severe winter weather is 
  imminent and poses a threat to life and property. Take 
  protective action now. 

&&

$$

ORZ023-026-250015-
/O.CON.KMFR.WW.Y.0020.170224T2100Z-170225T1800Z/
Central Douglas County-Jackson County-
300 AM PST Fri Feb 24 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THIS
AFTERNOON TO 10 AM PST SATURDAY...

* Snow accumulations...1 to 3 inches.

* Elevation...above 1500 feet.

* Timing...Snow showers will begin late this morning and continue
  through this night. Snowfall rates will become moderate to heavy
  this evening through tonight. 

* Locations include...Highway 42 at Camas Mountain...Oregon Route
  227 near the Jackson and Douglas County line...and rural areas
  of southern Douglas County and northern Jackson County.

* Impacts...Roads will become slippery. Blowing snow will reduce 
  visibility. 

* View the hazard area in detail at http://weather.gov/medford/hazard

Precautionary/preparedness actions...

* Slow down and allow extra time to reach your destination.

* Carry tire chains and be prepared for snow covered roads and 
  limited visibilities. 

* See weather.gov/Medford/Cams for latest road conditions.

* A Winter Weather Advisory for snow means that periods of snow 
  will cause travel difficulties. 

&&

$$
710 
WWUS46 KMFR 242227
WSWMFR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Medford OR
227 PM PST Fri Feb 24 2017

CAZ080-251200-
/O.CAN.KMFR.WS.W.0010.000000T0000Z-170225T1800Z/
/O.CON.KMFR.WW.Y.0020.000000T0000Z-170225T1800Z/
Western Siskiyou County-
227 PM PST Fri Feb 24 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

The National Weather Service in Medford has downgraded the Winter
Storm Warning to a Winter Weather Advisory. 

* Snow accumulations: 2 to 4 inches. 

* Elevation: Above 1500 feet.

* Timing: Snow will continue through Saturday morning. Snowfall
  rates will become moderate to heavy tonight, and snow may remain
  on road surfaces into Saturday morning.

* Locations in the advisory include: Highway 96 from Happy Camp to
  Somes Bar, and the higher terrain of far Western Siskiyou
  County. 

* Impacts...Those traveling, working, or recreating in this area
  will see difficult travel conditions as snowfall will create
  slippery, snow covered roads, and reduce visibilities to less
  than a half mile or less, at times.

Precautionary/preparedness actions...

* If you must travel, keep tire chains, a flashlight, blankets,
  food, water, medications, and a fully charged phone with you..

* Travel is strongly discouraged because of dangerous conditions.

* The safest place during a winter storm is indoors.

&&

$$

ORZ024-251200-
/O.CON.KMFR.WS.W.0010.000000T0000Z-170225T1800Z/
/O.CON.KMFR.WW.Y.0020.000000T0000Z-170225T1800Z/
Eastern Curry County and Josephine County-
Including the city of Cave Junction
227 PM PST Fri Feb 24 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* Snow accumulations: 5 to 10 inches in the warning area above
  2000 feet. 1 to 3 inches in the advisory area above 1500 feet. 

* Timing: Snow will continue through tonight. Snow will be
  moderate to heavy at times this evening through tonight. 

* Locations in the warning include much of the Kalmiopsis 
  Mountains. 

* Locations in the advisory include: The Sexton Summit to Canyon
  Creek area on Interstate 5, Highway 199 in the Illinois Valley
  including Selma, Cave Junction, Obrien, and Takilma.

* Impacts: Traveling on 199 or Interstate 5 will become difficult
  due to snow on roads...particularly at night. In the higher
  elevations, those working or recreating will see dangerous
  conditions due to snow and low visibilities as well as hazardous
  roads.

Precautionary/preparedness actions...

* Travel is strongly discouraged because of dangerous conditions.

* If you must travel, keep tire chains, a flashlight, blankets, 
  food, water, medications, and a fully charged phone with you. 

* The safest place during a winter storm is indoors.

* A Winter Storm Warning means that severe winter weather is 
  imminent and poses a threat to life and property. Take 
  protective action now. 

&&

$$

ORZ022-251200-
/O.CON.KMFR.WS.W.0010.000000T0000Z-170225T1800Z/
Curry County Coast-
227 PM PST Fri Feb 24 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...

* Snow accumulations: 6 to 12 inches.

* Elevation: Above 2000 feet.

* Timing: Snow showers will continue through tonight. Snowfall
  rates will become moderate to heavy this evening through tonight.

* Locations include: Curry County Coastal Mountains.

* Impacts: Snowfall will create slippery, snow covered roads, and
  reduce visibilities to less than a half mile or less at times. 

Precautionary/preparedness actions...

* Travel is strongly discouraged because of dangerous conditions.

* If you must travel, keep tire chains, a flashlight, blankets, 
  food, water, medications, and a fully charged phone with you. 

* The safest place during a winter storm is indoors.

* A Winter Storm Warning means that severe winter weather is 
  imminent and poses a threat to life and property. Take 
  protective action now. 

&&

$$

ORZ025-251200-
/O.NEW.KMFR.WS.A.0010.170226T1800Z-170227T1200Z/
/O.EXA.KMFR.WW.Y.0020.000000T0000Z-170225T1800Z/
Eastern Douglas County Foothills-
Including the cities of Steamboat and Toketee Falls
227 PM PST Fri Feb 24 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 10 AM PST SATURDAY...
...WINTER STORM WATCH IN EFFECT FROM SUNDAY MORNING THROUGH LATE
SUNDAY NIGHT...

The National Weather Service in Medford has issued a Winter
Weather Advisory for Snow which is in effect until 10 AM PST 
Saturday. A Winter Storm Watch has also been issued. This Winter 
Storm Watch is in effect from Sunday morning through late Sunday 
night. 

* Snow accumulations: 1 to 3 inches through tonight. 3 to 6 inches
  are possible in the Watch area Sunday.

* Elevation: Above 1500 feet through tonight. Above 2500 feet for
  the Watch on Sunday.

* Timing: Snow showers will continue through tonight. Snowfall
  rates will become moderate to heavy this evening through
  tonight. Another round of heavier snowfall is possible Sunday.

* Locations include: Highway 42 at Camas Mountain...Oregon Route
  227 near the Jackson and Douglas County line...and rural areas
  of southern Douglas County and northern Jackson County.

* Impacts: Snowfall will create slippery, snow covered roads, and
  reduce visibilities to less than a half mile or less at times.

* View the hazard area in detail at 
  http://weather.gov/medford/hazard

Precautionary/preparedness actions...

* Slow down and allow extra time to reach your destination.

* Carry tire chains and be prepared for snow covered roads and 
  limited visibilities. 

* See weather.gov/Medford/Cams for latest road conditions.

* A Winter Weather Advisory for snow means that periods of snow 
  will cause travel difficulties. 

&&

$$

ORZ021-251200-
/O.EXA.KMFR.WW.Y.0020.000000T0000Z-170225T1800Z/
South Central Oregon Coast-
227 PM PST Fri Feb 24 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 10 AM PST SATURDAY...

The National Weather Service in Medford has issued a Winter
Weather Advisory for Snow which is in effect until 10 AM PST 
Saturday. 

* Snow accumulations: 1 to 2 inches.

* Elevation: Above 1000 feet.

* Timing: Snow showers will continue through tonight. 

* Locations include: Portions of highway 238 between Scottsburg
  and Reedsport, and rural areas above 1000 feet in elevation.

* Impacts: Snowfall will create slippery, snow covered roads, and
  reduce visibilities to less than a half mile or less at times.

* View the hazard area in detail at 
  http://weather.gov/medford/hazard

Precautionary/preparedness actions...

* Slow down and allow extra time to reach your destination.

* Carry tire chains and be prepared for snow covered roads and 
  limited visibilities. 

* See weather.gov/Medford/Cams for latest road conditions.

* A Winter Weather Advisory for snow means that periods of snow 
  will cause travel difficulties. 

&&

$$

ORZ023-251200-
/O.NEW.KMFR.WS.A.0010.170226T1800Z-170227T1200Z/
/O.CON.KMFR.WW.Y.0020.000000T0000Z-170225T1800Z/
Central Douglas County-
Including the city of Elkton
227 PM PST Fri Feb 24 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...
...WINTER STORM WATCH IN EFFECT FROM SUNDAY MORNING THROUGH LATE
SUNDAY NIGHT...

The National Weather Service in Medford has issued a Winter Storm
Watch...which is in effect from Sunday morning through late
Sunday night. 

* Snow accumulations: 1 to 2 inches through tonight. 3 to 6 
  inches are possible in the Watch area Sunday.

* Elevation: Above 1500 feet through tonight. Above 2500 feet for
  the Watch on Sunday.

* Timing: Snow showers will continue and may become moderate this
  evening through tonight. Another round of heavier snowfall is
  possible Sunday.

* Locations include: Interstate 5 south of Canyonville, Elkton,
  Highway 42 at Camas Mountain, highway 238 between Elkton and
  Scottsburg, and the Tiller-Trail highway. The watch area
  includes the Tiller-Trail highway and other elevations above
  2500 feet.

* Impacts: Snowfall will create slippery, snow covered roads, and
  reduce visibilities to less than a half mile or less at times.

* View the hazard area in detail at 
  http://weather.gov/medford/hazard

Precautionary/preparedness actions...

* Slow down and allow extra time to reach your destination.

* Carry tire chains and be prepared for snow covered roads and 
  limited visibilities. 

* See weather.gov/Medford/Cams for latest road conditions.

* A Winter Weather Advisory for snow means that periods of snow 
  will cause travel difficulties. 

&&

$$

ORZ026-251200-
/O.NEW.KMFR.WS.A.0010.170226T1800Z-170227T1200Z/
/O.CON.KMFR.WW.Y.0020.000000T0000Z-170225T1800Z/
Jackson County-
227 PM PST Fri Feb 24 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY...
...WINTER STORM WATCH IN EFFECT FROM SUNDAY MORNING THROUGH LATE
SUNDAY NIGHT...

The National Weather Service in Medford has issued a Winter Storm
Watch...which is in effect from Sunday morning through late
Sunday night. 

* Snow accumulations: 1 to 2 inches through tonight. 3 to 6 
  inches are possible in the Watch area Sunday.

* Elevation: Above 1500 feet through tonight. Above 2500 feet for
  the Watch on Sunday.

* Timing: Snow showers will continue and may become moderate this
  evening through tonight. Another round of heavier snowfall is
  possible Sunday.

* Locations include: Jacksonville Hill, the Tiller-Trail highway,
  and Dead Indian Memorial Road. 

* Impacts: Snowfall will create slippery, snow covered roads, and
  reduce visibilities to less than a half mile or less at times.

* View the hazard area in detail at 
  http://weather.gov/medford/hazard

Precautionary/preparedness actions...

* Slow down and allow extra time to reach your destination.

* Carry tire chains and be prepared for snow covered roads and 
  limited visibilities. 

* See weather.gov/Medford/Cams for latest road conditions.

* A Winter Weather Advisory for snow means that periods of snow 
  will cause travel difficulties. 

&&

$$

BPN
731 
WWUS46 KMFR 250936
WSWMFR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Medford OR
136 AM PST Sat Feb 25 2017


ORZ024-251045-
/O.CAN.KMFR.WS.W.0010.000000T0000Z-170225T1800Z/
/O.CAN.KMFR.WW.Y.0020.000000T0000Z-170225T1800Z/
Eastern Curry County and Josephine County-
136 AM PST Sat Feb 25 2017

...WINTER STORM WARNING IS CANCELLED...
...WINTER WEATHER ADVISORY IS CANCELLED...

Snow showers are diminishing.

$$

ORZ022-251045-
/O.CAN.KMFR.WS.W.0010.000000T0000Z-170225T1800Z/
Curry County Coast-
136 AM PST Sat Feb 25 2017

...WINTER STORM WARNING IS CANCELLED...

The National Weather Service in Medford has cancelled the Winter
Storm Warning. 

Snow showers are diminishing.

$$

ORZ023-025-026-252300-
/O.CAN.KMFR.WW.Y.0020.000000T0000Z-170225T1800Z/
/O.CON.KMFR.WS.A.0010.170226T1800Z-170227T1200Z/
Central Douglas County-Eastern Douglas County Foothills-
Jackson County-
Including the cities of Steamboat and Toketee Falls
136 AM PST Sat Feb 25 2017

...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY MORNING
THROUGH LATE SUNDAY NIGHT...
...WINTER WEATHER ADVISORY IS CANCELLED...

* Snow accumulations: 3 to 6 inches are possible in the Watch area
  Sunday.

* Elevation: Above 1500 feet through tonight. Above 2500 feet 
  for the Watch on Sunday. 

* Timing: Snow showers will continue and may become moderate 
  this evening through tonight. Another round of heavier 
  snowfall is possible Sunday. 

* Locations include: The watch area includes the Tiller-Trail
  highway and other elevations above 2500 feet.

* Impacts: Snowfall could create slippery, snow covered roads, and
  reduce visibilities to less than a half mile or less at times.

Precautionary/preparedness actions...

* Stock emergency kit with tire chains, flashlight, batteries,
  blankets, food, water, and medications. 

* The safest place during a winter storm is indoors. 

* Plan now to avoid traveling during the storm. 

* A Winter Storm Watch means there is potential for significant
  snow accumulations that may create dangerous travel.

&&

$$

ORZ021-251045-
/O.CAN.KMFR.WW.Y.0020.000000T0000Z-170225T1800Z/
South Central Oregon Coast-
136 AM PST Sat Feb 25 2017

...WINTER WEATHER ADVISORY IS CANCELLED...

The National Weather Service in Medford has cancelled the Winter
Weather Advisory. 


$$

CAZ080-251800-
/O.CON.KMFR.WW.Y.0020.000000T0000Z-170225T1800Z/
Western Siskiyou County-
136 AM PST Sat Feb 25 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...

* Snow accumulations: 2 to 4 inches.

* Elevation: Above 1500 feet.

* Timing: Snow will continue through Saturday morning. Snowfall 
  rates will become moderate to heavy tonight, and snow may 
  remain on road surfaces into Saturday morning. 

* Locations in the advisory include: Highway 96 from Happy Camp 
  to Somes Bar, and the higher terrain of far Western Siskiyou 
  County. 

* Impacts...Those traveling, working, or recreating in this area 
  will see difficult travel conditions as snowfall will create 
  slippery, snow covered roads, and reduce visibilities to less 
  than a half mile or less, at times. 

Precautionary/preparedness actions...

* Slow down and allow extra time to reach your destination. 

* Carry tire chains and be prepared for snow covered roads and
  limited visibilities. 

* See weather.gov/Medford/Cams for latest road conditions. 

* A Winter Weather Advisory for snow means that periods of snow
  will cause travel difficulties. 

&&

$$

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 Medford, OR wrote its last area forecast discussion before this winter storm warning went out at Feb 23, 9:57 AM PST, 4 hours 12 minutes earlier.

Area forecast discussion, Feb 23, 9:57 AM PST, 4 hours 12 minutes before
Area Forecast Discussion
National Weather Service Medford OR
957 AM PST Thu Feb 23 2017

.Updated Aviation Discussion.

.UPDATE...Current observations show tapering showers over some of
the higher terrain areas, and that many areas reached below
freezing. As of the writing of this discussion, the coast is
hovering just above freezing. With skies over the coast currently
sunny--per reports from the public and visible satellite,
temperatures will warm today. The big question for the coast
tonight will be whether or not we will see enough cloud cover to
preclude freezing conditions ahead of the incoming system.

The other big challenge for today is the system coming in on
Friday and Friday night. The previous shift has done well to pare
down the watch issued yesterday (which was liberally applied in
order to note the potential for incoming weather). The goal today
will be to determine which areas will see advisory level snows
versus warning level snow amounts.

Additionally, will need to take a closer look at the Sunday storm
system as this could create additional issues this weekend. The
previous shift did a great job noting the possibilities with these
storms, so have included the previous discussion to give more
information in the meantime. -Schaaf

.AVIATION...23/18z TAF CYCLE...VFR conditions are expected to be
the predominate condition for the next 24 hours. The exception will
be at Roseburg where MVFR cigs will continue through the morning
hours. The TAF at Roseburg shows conditions improving at 21z, but
there's a chance it could improve earlier. Despite VFR conditions,
could not rule out partial mountain obscurations through at least
21z. -Petrucelli

&&

.PREV DISCUSSION... /Issued 427 AM PST Thu Feb 23 2017/

DISCUSSION...
Below freezing temperatures across much of the forecast area this
morning mean that black ice is possible on untreated roadways
today until road surface temperatures warm to above freezing.
Portions of the East Side and the mountains will remain below
freezing today.

Snow showers have dissipated overnight to just some lingering snow
flurries, mainly across the higher mountains and East Side. While
some showers are expected today these will be only isolated to
scattered in areas where they do occur and much lighter than
yesterday's. Additional accumulations will be an inch or less,
except along Winter Rim and the Warner Mountains, where 1 to 3
inches will be possible. Snow levels will rise to the 1000 to 2000
foot range this afternoon and evening.

Friday into Saturday another cold upper level low will move
southward along the coast. This low is not as strong as the one
that moved through yesterday, and the bulk of the precipitation
associated with it remains along and near the coast. With the
surface low centered offshore, low level flow across the interior
West Side will be southeasterly, which is not favorable for
substantial precipitation. Still, the Coastal Mountains of Coos,
Curry, and Siskiyou counties could see significant snow
accumulations above 1500 feet. In Josephine County there remains
significant concern for substantial snowfall in the Illinois
Valley down to about 1000 feet and on the Sexton passes. For
these areas winter storm watches remain in effect. For other
locations that were in a watch, we've cancelled the watch. Some of
these areas could still see lighter advisory type snow amounts,
in the 1 to 3 inch range in the valleys and 2 to 6 inches in the
mountains and Mount Shasta area. Snow levels with this one have
been adjusted based on relative 850mb, 700mb, and 500mb
temperature values based on rough verification from the frontal
system that just moved through. Thus, portions of the Rogue Valley
could see some snow, but amounts should be mostly an inch or less
below 3000 foot elevations.

Yet another low pressure system is expected to move in from the
north-northwest Sunday through Tuesday. This one looks as if it is
more likely to move right over us, so precipitation looks more
likely for much of the area. Snow levels will remain low with this
one, in the 1500 to 2500 foot range. This one appears to be
another light to moderate snowfall event. With the vigorous upper
level low aloft, suspect that brief, but substantial
accumulations will again be a concern.

Finally, current guidance indicates a break in the action
beginning Tuesday or Wednesday. We'll keep our fingers crossed on
this development, as reprieves in the extended have been slower to
materialize much of this winter and have been of shorter duration
than what they often appear to be from afar when they do arrive.
BTL

MARINE...Updated 330 AM PST Thursday 23 February 2017...Steep
seas are expected to develop from west to east this morning as fresh
swell moves into the waters with a dominant period of  8-9 seconds.
Seas of 7 to 8 feet at 8 seconds are expected this morning with
marginal small craft advisory conditions. Seas steepness will
subside in the afternoon. Low pressure moving down the Pacific
Northwest coast on Friday should increase winds and seas. Models
have trended lower with the south to southwest winds though, so do
not expect small craft advisory conditions. Another disturbance will
shift south on Sunday but may stay along the coast or inland. So
expect mainly expect northwest winds and seas dominated by northwest
swell. -CC

&&

.MFR WATCHES/WARNINGS/ADVISORIES...
OR...Winter Storm Watch from Friday morning through Saturday morning
     for ORZ021-022-024.

CA...Winter Storm Watch from Friday morning through Saturday morning
     for CAZ080.

Pacific Coastal Waters...Small Craft Advisory for hazardous seas
until 10 AM PST this      morning for PZZ350-356.      Small Craft
Advisory for hazardous seas until 4 PM PST this      afternoon for
PZZ370-376.

BMS/BTL/MAP

The office that day

Everything else NWS Medford, OR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 23, 11:03 AM PSTFreeze WarningMFRCoos, Curry, Douglas21 hr
Feb 23, 2:09 PM PSTWinter Weather AdvisoryMFRCoos, Curry, Douglas, Jackson, Josephine37 hr

Nearby

Winter Storm Warnings in Oregon, 2017Winter Storm Warnings in California, 2017Every winter 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.