Alert archive / California / Winter Storm Warnings in 2018

Winter Storm Warning 10, NWS Medford, OR

March 1, 2018Siskiyou County, California

NWS Medford, OR issued this winter storm warning at Mar 1, 2018, 10:59 PM PST for Siskiyou County, California. It took effect at Mar 2, 2018, 10:00 AM PST. It was in force for 18 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 1, 2018, 10:59 PM PST (06:59 UTC)
In effect from
Mar 2, 2018, 10:00 AM PST
Expired
Mar 3, 2018, 4:00 AM PST
In force
18 hr
Issued by
NWS Medford, OR

County Siskiyou County, CA

The radar

The Medford radar (KMAX), 56 km from the middle of the area, began a volume at 07:01 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 00:00Z, 7.0 hours before the alert went out and 89 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 00:00Z on 2018-03-02Temperature 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, Medford/Jackson, OR at 00:00Z on 2018-03-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 98 square meters per square second.1939587897Sfc1 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
771 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
98 m²/s²
0-3 km storm-relative helicity
154 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

238 
WWUS46 KMFR 020659
WSWMFR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Medford OR
1059 PM PST Thu Mar 1 2018


CAZ082-021500-
/O.CAN.KMFR.WS.W.0009.000000T0000Z-180303T1500Z/
/O.NEW.KMFR.WS.W.0010.180302T1800Z-180303T1200Z/
/O.EXB.KMFR.WW.Y.0013.180302T1800Z-180303T1200Z/
South Central Siskiyou County-
Including the cities of Mount Shasta, Dunsmuir, and Mccloud
1059 PM PST Thu Mar 1 2018

...WINTER STORM WARNING IN EFFECT FROM 10 AM FRIDAY TO 4 AM PST
SATURDAY...
...WINTER WEATHER ADVISORY IN EFFECT FROM 10 AM FRIDAY TO 4 AM
PST SATURDAY...

* WHAT...Moderate to heavy snow expected. Total snow accumulations
  of 6 to 10 inches, with localized amounts up to 14 inches, in
  the warning area. Total snow accumulations of 4 to 8 inches in
  the advisory area.

* WHERE...Warning area includes Snowman's Summit on Highway 89 and
  Everitt Memorial Highway near Mount Shasta City. Advisory area
  includes Dunsmuir, Mount Shasta City, and Black Butte Summit on
  Interstate 5.

* WHEN...10 AM Friday to 4 AM PST Saturday. The greatest impacts
  to roadways are expected late Friday afternoon into Friday
  evening.

* ADDITIONAL DETAILS...Plan on difficult travel conditions, 
  including during the evening commute on Friday. Be prepared 
  for significant reductions in visibility at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD

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
  likely and poses a threat to life and property. Take protective
  action now.

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

&&

$$

ORZ029-030-020800-
/O.CAN.KMFR.WS.W.0009.000000T0000Z-180302T1200Z/
/O.CAN.KMFR.WW.Y.0013.000000T0000Z-180302T1200Z/
Klamath Basin-
Northern and Eastern Klamath County and Western Lake County-
1059 PM PST Thu Mar 1 2018

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

Snow has diminished across the area.

$$

CAZ083-020800-
/O.CAN.KMFR.WS.W.0009.000000T0000Z-180303T1500Z/
/O.CAN.KMFR.WW.Y.0013.000000T0000Z-180303T1500Z/
North Central and Southeast Siskiyou County-
1059 PM PST Thu Mar 1 2018

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

Snow has diminished across the area.

$$

CAZ081-021500-
/O.CAN.KMFR.WW.Y.0013.000000T0000Z-180303T1500Z/
/O.NEW.KMFR.WW.Y.0014.180302T1800Z-180303T1200Z/
Central Siskiyou County-
Including the city of Weed
1059 PM PST Thu Mar 1 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 10 AM FRIDAY TO 4 AM
PST SATURDAY...

* WHAT...Snow expected. Total snow accumulations of up to 2
  inches, with localized amounts up to 4 inches. Gusty winds 20 
  to 30 mph with gusts to 50 mph are expected, primarily before 
  the snowfall.

* WHERE...Central Siskiyou County to include Weed along Interstate
  5.

* WHEN...From 10 AM Friday to 4 AM PST Saturday. The greatest snow
  impacts to roadways are expected late Friday afternoon and
  Friday evening.

* ADDITIONAL DETAILS...Plan on slippery road conditions, 
  including during the evening commute on Friday. Tree branches 
  could fall. Be prepared for reduced visibilities at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/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 http://quickmap.dot.ca.gov for latest road conditions.

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

&&

$$

ORZ021-022-027-028-020800-
/O.CAN.KMFR.WW.Y.0013.000000T0000Z-180303T1500Z/
South Central Oregon Coast-Curry County Coast-
South Central Oregon Cascades-
Siskiyou Mountains and Southern Oregon Cascades-
1059 PM PST Thu Mar 1 2018

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow has diminished.

$$

CAZ084-020800-
/O.CAN.KMFR.WW.Y.0013.000000T0000Z-180302T1200Z/
Northeast Siskiyou and Northwest Modoc Counties-
1059 PM PST Thu Mar 1 2018

...WINTER WEATHER ADVISORY IS CANCELLED...

Snow has diminished.

$$

CAZ080-021500-
/O.EXT.KMFR.WS.W.0009.000000T0000Z-180303T1800Z/
/O.EXT.KMFR.WW.Y.0013.000000T0000Z-180303T1800Z/
Western Siskiyou County-
Including the cities of Etna, Fort Jones, and Happy Camp
1059 PM PST Thu Mar 1 2018

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

* WHAT...Moderate to heavy snow expected. Additional snow
  accumulations of 6 to 12 inches, with localized amounts up to 18
  inches, in the warning area. Additional snow accumulations of 2
  to 4 inches in the advisory area.

* WHERE...Warning area includes Etna Summit on Sawyers Bar Road
  and other areas mostly above 4000 feet. Advisory areas include
  Fort Jones, Etna and most other locations along Highway 3, and
  Seiad Valley and Happy Camp and most areas along Highway 96.

* WHEN...Until 10 AM PST Saturday.

* ADDITIONAL DETAILS...Plan on difficult travel conditions, 
  including during the evening commute on Friday. Be prepared 
  for significant reductions in visibility at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD

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
  likely and poses a threat to life and property. Take protective
  action now.

&&

$$

ORZ024-021500-
/O.EXT.KMFR.WS.W.0009.000000T0000Z-180303T1800Z/
/O.EXT.KMFR.WW.Y.0013.000000T0000Z-180303T1800Z/
Eastern Curry County and Josephine County-
Including the cities of Grants Pass and Cave Junction
1059 PM PST Thu Mar 1 2018

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

* WHAT...Moderate to heavy snow expected. Additional snow
  accumulations of 6 to 12 inches, with localized amounts up to 2
  feet, in the warning area. Additional snow accumulations of 1 to
  4 inches in the advisory area.

* WHERE...Warning area includes areas along Highway 199 from Hayes
  Hill southward to Obrien and the California border and the 
  Kalmiopsis Wilderness. Advisory area includes lower elevation 
  areas outside of the Illinois Valley (and Cave Junction in the 
  Illinois Valley) to include Williams and Grants Pass. Advisory 
  also includes Sexton Pass along Interstate 5.

* WHEN...Until 10 AM PST Saturday. Snowmelt on roadways is more
  likely during the daytime due to the late winter sun angle. Snow
  impacts are most likely Friday morning and Friday night into
  Saturday morning.

* ADDITIONAL DETAILS...Plan on difficult travel conditions, 
  including during the morning commute on Friday. Be prepared 
  for significant reductions in visibility at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD

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
  likely and poses a threat to life and property. Take protective
  action now.

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

&&

$$

CAZ085-021200-
/O.CON.KMFR.WS.W.0009.000000T0000Z-180302T1200Z/
/O.CON.KMFR.WW.Y.0013.000000T0000Z-180302T1200Z/
Modoc County-
Including the cities of Alturas, Canby, and Likely
1059 PM PST Thu Mar 1 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST FRIDAY...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
FRIDAY...

* WHAT...Moderate to heavy snow and blowing snow expected.
  Additional snow accumulations of 2 to 4 inches, with localized
  amounts up to 6 inches, in the warning area. Additional snow
  accumulations of up to 2 inches in the advisory area.

* WHERE...Warning area includes Adin and Cedar Mountain Pass on
  Highway 299. Advisory area includes Alturas and Likely.

* WHEN...For the Winter Storm Warning, until 4 AM PST Friday. 
  For the Winter Weather Advisory, until 4 AM PST Friday.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Be 
  prepared for significant reductions in visibility at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD

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
  occurring and poses a threat to life and property. Take 
  protective action now.

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

&&

$$

ORZ023-025-026-021500-
/O.EXT.KMFR.WW.Y.0013.000000T0000Z-180302T1700Z/
Central Douglas County-Eastern Douglas County Foothills-
Jackson County-
Including the cities of Drain, Canyonville, Glendale, Steamboat, 
Toketee Falls, Medford, and Ashland
1059 PM PST Thu Mar 1 2018

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 9 AM PST FRIDAY...

* WHAT...Some snow and slippery roadways are expected due to
  recent snow and freezing temperatures. Additional snow
  accumulations of up to 2 inches.

* WHERE...Central Douglas County, Eastern Douglas County Foothills
  and Jackson County to include Medford, Ashland, Jacksonville,
  Butte Falls, Toketee Falls, Sexton Pass on Interstate 5, Camas
  Mountain on Highway 42. Best chance for snow showers overnight
  and in the morning is along and west of Interstate 5.

* WHEN...Until 9 AM PST Friday.

* ADDITIONAL DETAILS...Plan on slippery road conditions, 
  including during the morning commute on Friday. Be prepared 
  for reduced visibilities at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/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 https://www.tripcheck.com for latest road conditions.

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

&&

$$

ORZ031-021200-
/O.CON.KMFR.WW.Y.0013.000000T0000Z-180302T1200Z/
Central and Eastern Lake County-
Including the cities of Adel, Lakeview, and Valley Falls
1059 PM PST Thu Mar 1 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
FRIDAY...

* WHAT...Snow expected. Additional snow accumulations of up to two
  inches, with localized amounts up to 4 inches.

* WHERE...Central and Eastern Lake County to include Lakeview.

* WHEN...Until 4 AM PST Friday.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Tree 
  branches could fall. Be prepared for reduced visibilities at 
  times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/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 https://www.tripcheck.com for latest road conditions.

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

&&

$$

Visit us at https://www.weather.gov/Medford
5 follow-up statements
922 
WWUS46 KMFR 021203
WSWMFR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Medford OR
403 AM PST Fri Mar 2 2018


CAZ085-021315-
/O.EXP.KMFR.WS.W.0009.000000T0000Z-180302T1200Z/
/O.EXP.KMFR.WW.Y.0013.000000T0000Z-180302T1200Z/
Modoc County-
Including the cities of Alturas, Canby, and Likely
403 AM PST Fri Mar 2 2018

...WINTER STORM WARNING WILL EXPIRE AT 4 AM PST EARLY THIS
MORNING...
...WINTER WEATHER ADVISORY WILL EXPIRE AT 4 AM PST EARLY THIS
MORNING...

Showers will continue to decrease in coverage and intensity
this morning. 

$$

ORZ031-021315-
/O.EXP.KMFR.WW.Y.0013.000000T0000Z-180302T1200Z/
Central and Eastern Lake County-
Including the cities of Adel, Lakeview, and Valley Falls
403 AM PST Fri Mar 2 2018

...WINTER WEATHER ADVISORY WILL EXPIRE AT 4 AM PST EARLY THIS
MORNING...

Showers will continue to decrease in coverage and intensity
this morning. 

$$

CAZ080-022015-
/O.CON.KMFR.WS.W.0009.000000T0000Z-180303T1800Z/
/O.CON.KMFR.WW.Y.0013.000000T0000Z-180303T1800Z/
Western Siskiyou County-
Including the cities of Etna, Fort Jones, and Happy Camp
403 AM PST Fri Mar 2 2018

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

* WHAT...Moderate to heavy snow expected. Additional snow 
  accumulations of 6 to 12 inches, with localized amounts up to 
  18 inches, in the warning area. Additional snow accumulations 
  of 1 to 4 inches in the advisory area.

* WHERE...Warning area includes Etna Summit on Sawyers Bar Road 
  and other areas mostly above 4000 feet. Advisory areas include 
  Fort Jones, Etna and most other locations along Highway 3, and 
  Seiad Valley and Happy Camp and most areas along Highway 96.

* WHEN...Until 10 AM PST Saturday.

* ADDITIONAL DETAILS...Plan on difficult travel conditions, 
  including during the evening commute on Friday. Be prepared 
  for significant reductions in visibility at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD

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
  likely and poses a threat to life and property. Take protective
  action now.

&&

$$

ORZ024-022015-
/O.CON.KMFR.WS.W.0009.000000T0000Z-180303T1800Z/
/O.CON.KMFR.WW.Y.0013.000000T0000Z-180303T1800Z/
Eastern Curry County and Josephine County-
Including the cities of Grants Pass and Cave Junction
403 AM PST Fri Mar 2 2018

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

* WHAT...Moderate to heavy snow expected. Additional snow
  accumulations of 6 to 12 inches, with localized amounts up to 2
  feet, in the warning area. Additional snow accumulations of 1 to
  4 inches in the advisory area. Winds may be gusty with gusts of
  30 to 40 mph at times in showers today. 

* WHERE...Warning area includes areas along Highway 199 from 
  Hayes Hill southward to Obrien and the California border and 
  the Kalmiopsis Wilderness. Advisory area includes lower 
  elevation areas outside of the Illinois Valley (and Cave 
  Junction in the Illinois Valley) to include Williams and 
  Grants Pass. Advisory also includes Sexton Pass along 
  Interstate 5.

* WHEN...Until 10 AM PST Saturday. Snowmelt on roadways is more
  likely during the daytime due to the late winter sun angle. Snow
  impacts are most likely this morning and tonight into Saturday 
  morning.

* ADDITIONAL DETAILS...Plan on difficult travel conditions,
  including during the morning commute on Friday. Be prepared for
  significant reductions in visibility at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD

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
  likely and poses a threat to life and property. Take protective
  action now.

&&

$$

CAZ082-022015-
/O.CON.KMFR.WS.W.0010.180302T1800Z-180303T1200Z/
/O.CON.KMFR.WW.Y.0013.180302T1800Z-180303T1200Z/
South Central Siskiyou County-
Including the cities of Mount Shasta, Dunsmuir, and Mccloud
403 AM PST Fri Mar 2 2018

...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING
TO 4 AM PST SATURDAY...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 AM THIS
MORNING TO 4 AM PST SATURDAY...

* WHAT...Moderate to heavy snow expected. Total snow 
  accumulations of 6 to 10 inches, with localized amounts up to 
  14 inches, in the warning area. Total snow accumulations of 4 
  to 8 inches in the advisory area.

* WHERE...Warning area includes Snowman's Summit on Highway 89 
  and Everitt Memorial Highway near Mount Shasta City. Advisory 
  area includes Dunsmuir, Mount Shasta City, and Black Butte 
  Summit on Interstate 5.

* WHEN...10 AM today to 4 AM PST Saturday. The greatest impacts to
  roadways are expected late this afternoon into tonight.

* ADDITIONAL DETAILS...Plan on difficult travel conditions, 
  including during the evening commute on Friday. Be prepared 
  for significant reductions in visibility at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD

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
  likely and poses a threat to life and property. Take protective
  action now.

&&

$$

ORZ023-025-026-021700-
/O.CON.KMFR.WW.Y.0013.000000T0000Z-180302T1700Z/
Central Douglas County-Eastern Douglas County Foothills-
Jackson County-
Including the cities of Drain, Canyonville, Glendale, Steamboat, 
Toketee Falls, Medford, and Ashland
403 AM PST Fri Mar 2 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS
MORNING...

* WHAT...Some snow and slippery roadways are expected due to 
  recent snow and freezing temperatures. Additional snow 
  accumulations of up to 2 inches.

* WHERE...Central Douglas County, Eastern Douglas County Foothills
  and Jackson County to include Medford, Ashland, Jacksonville,
  Butte Falls, Toketee Falls, Sexton Pass on Interstate 5, Camas
  Mountain on Highway 42. Best chance for snow showers will be along
  and west of Interstate 5 this morning.

* WHEN...Until 9 AM PST this morning.

* ADDITIONAL DETAILS...Plan on slippery road conditions, including
  during the morning commute today. Be prepared for reduced 
  visibilities at times in showers.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/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 https://www.tripcheck.com for latest road conditions.

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

&&

$$

CAZ081-022015-
/O.CON.KMFR.WW.Y.0014.180302T1800Z-180303T1200Z/
Central Siskiyou County-
Including the city of Weed
403 AM PST Fri Mar 2 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 AM THIS
MORNING TO 4 AM PST SATURDAY...

* WHAT...Snow expected. Total snow accumulations of up to 2 
  inches, with localized amounts up to 4 inches. Gusty winds 20 
  to 30 mph with gusts to 50 mph are expected, primarily before 
  the snowfall.

* WHERE...Central Siskiyou County to include Weed along 
  Interstate 5.

* WHEN...From 10 AM today to 4 AM PST Saturday. The greatest snow
  impacts to roadways are expected late this afternoon into
  tonight. 

* ADDITIONAL DETAILS...Plan on slippery road conditions, 
  including during the evening commute on Friday. Tree branches 
  could fall. Be prepared for reduced visibilities at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/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 http://quickmap.dot.ca.gov for latest road conditions.

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

&&

$$

Visit us at https://www.weather.gov/Medford
121 
WWUS46 KMFR 021722
WSWMFR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Medford OR
922 AM PST Fri Mar 2 2018


ORZ023-030000-
/O.EXP.KMFR.WW.Y.0013.000000T0000Z-180302T1700Z/
/O.EXB.KMFR.WW.Y.0014.180302T1722Z-180303T0000Z/
Central Douglas County-
922 AM PST Fri Mar 2 2018

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON...

* WHAT...Heavy snow in showers is causing slippery snow covered
  roads and poor visibility. Additional snow accumulations of up 
  to 3 inches expected. 

* WHERE... Western Douglas County, above 1000 feet, Hwy 42 at 
  Camas Mountain.

* WHEN...Until 4 PM PST this afternoon.

* ADDITIONAL DETAILS...Travel will be very difficult over Camas
  Mountain.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/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 https://www.tripcheck.com or http://quickmap.dot.ca.gov for
  latest road conditions.

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

&&

$$

ORZ025-026-021830-
/O.EXP.KMFR.WW.Y.0013.000000T0000Z-180302T1700Z/
Eastern Douglas County Foothills-Jackson County-
922 AM PST Fri Mar 2 2018

...WINTER WEATHER ADVISORY HAS EXPIRED...

Showers have decreased in intensity and coverage, though slippery
roads will continue in some areas.

$$

CAZ080-030130-
/O.CON.KMFR.WS.W.0009.000000T0000Z-180303T1800Z/
/O.CON.KMFR.WW.Y.0013.000000T0000Z-180303T1800Z/
Western Siskiyou County-
Including the cities of Etna, Fort Jones, and Happy Camp
922 AM PST Fri Mar 2 2018

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

* WHAT...Heavy snow. Snow. Additional snow accumulations of 5 to 8
  inches, with localized amounts up to 20 inches, in the warning
  area are expected. Additional snow accumulations of 1 to 4
  inches in the advisory area are expected.

* WHERE...Warning area includes Etna Summit on Sawyers Bar Road 
  and other areas mostly above 4000 feet. Advisory areas include 
  Fort Jones, Etna and most other locations along Highway 3, and 
  Seiad Valley and Happy Camp and most areas along Highway 96.

* WHEN...Until 10 AM PST Saturday.

* ADDITIONAL DETAILS...Plan on difficult travel conditions, 
  including during the evening commute. Be prepared for 
  significant reductions in visibility at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD

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
  likely and poses a threat to life and property. Take protective
  action now.

&&

$$

ORZ024-030130-
/O.CON.KMFR.WS.W.0009.000000T0000Z-180303T1800Z/
/O.CON.KMFR.WW.Y.0013.000000T0000Z-180303T1800Z/
Eastern Curry County and Josephine County-
Including the cities of Grants Pass and Cave Junction
922 AM PST Fri Mar 2 2018

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

* WHAT....Moderate to heavy snow expected. Additional snow 
  accumulations of 6 to 10 inches, with localized amounts up to 21
  inches, in the warning area are expected. Additional snow 
  accumulations of 1 to 3 inches in the advisory area are 
  expected.

* WHERE...Warning area includes areas along Highway 199 from Hayes
  Hill southward to Obrien and the California border and the
  Kalmiopsis Wilderness. Advisory area includes lower elevation
  areas outside of the Illinois Valley (and Cave Junction in the
  Illinois Valley) to include Williams and Grants Pass. Advisory
  also includes Sexton Pass along Interstate 5.

* WHEN...Until 10 AM PST Saturday. Snowmelt on roadways is more 
  likely during the daytime due to the late winter sun angle. 
  Snow impacts are most likely this morning and tonight into 
  Saturday morning.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Be 
  prepared for significant reductions in visibility at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD

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
  likely and poses a threat to life and property. Take protective
  action now.

&&

$$

CAZ082-030130-
/O.CON.KMFR.WS.W.0010.180302T1800Z-180303T1200Z/
/O.CON.KMFR.WW.Y.0013.180302T1800Z-180303T1200Z/
South Central Siskiyou County-
Including the cities of Mount Shasta, Dunsmuir, and Mccloud
922 AM PST Fri Mar 2 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST
SATURDAY...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
SATURDAY...

* WHAT...Moderate to heavy snow expected. Total snow accumulations
  of 5 to 8 inches, with localized amounts up to 12 inches, in the
  warning area are expected. Total snow accumulations of 4 to 6
  inches in the advisory area are expected.

* WHERE...Warning area includes Snowman's Summit on Highway 89 
  and Everitt Memorial Highway near Mount Shasta City. Advisory 
  area includes Dunsmuir, Mount Shasta City, and Black Butte 
  Summit on Interstate 5.

* WHEN...Until 4 AM PST Saturday. The greatest impacts to roadways
  are expected late this afternoon into tonight.

* ADDITIONAL DETAILS...Plan on difficult travel conditions, 
  including during the evening commute. Be prepared for 
  significant reductions in visibility at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD

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
  likely and poses a threat to life and property. Take protective
  action now.

&&

$$

CAZ081-030130-
/O.CON.KMFR.WW.Y.0014.180302T1800Z-180303T1200Z/
Central Siskiyou County-
Including the city of Weed
922 AM PST Fri Mar 2 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
SATURDAY...

* WHAT...Snow expected. Total snow accumulations of up to 2
  inches, with localized amounts up to 5 inches. Winds 20 to 30
  mph with gusts to 50 mph will cause areas of blowing snow.

* WHERE...Central Siskiyou County to include Weed along 
  Interstate 5.

* WHEN...Until 4 AM PST Saturday. The greatest 
  snow impacts to roadways are expected late this afternoon into 
  tonight.

* ADDITIONAL DETAILS...Plan on slippery road conditions, including
  during the evening commute. Strong winds will add to the driving
  difficulties at times. Tree branches could fall. Be prepared 
  for reduced visibilities at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/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 http://quickmap.dot.ca.gov for latest road conditions.

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

&&

$$

Visit us at https://www.weather.gov/Medford
597 
WWUS46 KMFR 022320
WSWMFR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Medford OR
320 PM PST Fri Mar 2 2018


ORZ023-030030-
/O.CAN.KMFR.WW.Y.0014.000000T0000Z-180303T0000Z/
Central Douglas County-
320 PM PST Fri Mar 2 2018

...WINTER WEATHER ADVISORY IS CANCELLED...

Temperatures have warmed and showers have diminished. 

$$

CAZ080-031200-
/O.CON.KMFR.WS.W.0009.000000T0000Z-180303T1800Z/
/O.CON.KMFR.WW.Y.0013.000000T0000Z-180303T1800Z/
Western Siskiyou County-
Including the cities of Etna, Fort Jones, and Happy Camp
320 PM PST Fri Mar 2 2018

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

* WHAT...Moderate to heavy snow. Additional snow accumulations of
  3 to 6 inches, with localized amounts up to 13 inches, in the 
  warning area are expected. Additional snow accumulations of 1 to
  3 inches, in the advisory area are expected.

* WHERE...Warning area includes Etna Summit on Sawyers Bar Road 
  and other areas mostly above 4000 feet. Advisory areas include 
  Fort Jones, Etna and most other locations along Highway 3, and 
  Seiad Valley and Happy Camp and most areas along Highway 96.

* WHEN...Until 10 AM PST Saturday.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Be 
  prepared for significant reductions in visibility at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD

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
  likely and poses a threat to life and property. Take protective
  action now.

&&

$$

ORZ024-031200-
/O.CON.KMFR.WS.W.0009.000000T0000Z-180303T1800Z/
/O.CON.KMFR.WW.Y.0013.000000T0000Z-180303T1800Z/
Eastern Curry County and Josephine County-
Including the cities of Grants Pass and Cave Junction
320 PM PST Fri Mar 2 2018

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

* WHAT...Moderate to heavy snow expected. Additional snow
  accumulations of 3 to 6 inches, with localized amounts up to 13
  inches, in the warning area are expected. Additional snow
  accumulations of 1 to 3 inches in the advisory area expected.

* WHERE...Warning area includes areas along Highway 199 from Hayes
  Hill southward to Obrien and the California border and the
  Kalmiopsis Wilderness. Advisory area includes lower elevation
  areas outside of the Illinois Valley (and Cave Junction in the
  Illinois Valley) to include Williams and Grants Pass. Advisory
  also includes Sexton Pass along Interstate 5.

* WHEN...Until 10 AM PST Saturday. 

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Be 
  prepared for significant reductions in visibility at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD

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
  likely and poses a threat to life and property. Take protective
  action now.

&&

$$

CAZ082-031200-
/O.CON.KMFR.WS.W.0010.000000T0000Z-180303T1200Z/
/O.CON.KMFR.WW.Y.0013.000000T0000Z-180303T1200Z/
South Central Siskiyou County-
Including the cities of Mount Shasta, Dunsmuir, and Mccloud
320 PM PST Fri Mar 2 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST
SATURDAY...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
SATURDAY...

* WHAT...Moderate to heavy snow expected. Additional snow
  accumulations of 5 to 8 inches in the warning area are expected,
  with local amounts up to 12 inches. Additional snow
  accumulations of 3 to 5 inches in the advisory area are 
  expected.

* WHERE...Warning area includes Snowman's Summit on Highway 89 
  and Everitt Memorial Highway near Mount Shasta City. Advisory 
  area includes Dunsmuir, Mount Shasta City, and Black Butte 
  Summit on Interstate 5.

* WHEN...Until 4 AM PST Saturday.

* ADDITIONAL DETAILS...Plan on difficult travel conditions, 
  including during the evening commute. Be prepared for 
  significant reductions in visibility at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD

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
  likely and poses a threat to life and property. Take protective
  action now.

&&

$$

CAZ081-031200-
/O.CON.KMFR.WW.Y.0014.000000T0000Z-180303T1200Z/
Central Siskiyou County-
Including the city of Weed
320 PM PST Fri Mar 2 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
SATURDAY...

* WHAT...Moderate snow and gusty winds. Additional snow 
  accumulations of up to 2 inches, with localized amounts up to 5 
  inches, are expected.

* WHERE...Central Siskiyou County to include Weed along 
  Interstate 5.

* WHEN...Until 4 AM PST Saturday.

* ADDITIONAL DETAILS...Plan on slippery road conditions, 
  including during the evening commute. Tree branches could 
  fall. Be prepared for reduced visibilities at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/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 http://quickmap.dot.ca.gov for latest road conditions.

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

&&

$$

Visit us at https://www.weather.gov/Medford
487 
WWUS46 KMFR 031140
WSWMFR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Medford OR
340 AM PST Sat Mar 3 2018

ORZ024-031800-
/O.CON.KMFR.WS.W.0009.000000T0000Z-180303T1800Z/
/O.CON.KMFR.WW.Y.0013.000000T0000Z-180303T1800Z/
Eastern Curry County and Josephine County-
Including the cities of Grants Pass and Cave Junction
340 AM PST Sat Mar 3 2018

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

* WHAT...Moderate snow. Additional snow accumulations of 2 to 4 
  inches, with localized amounts up to 6 inches, in the warning 
  area are expected. Additional snow accumulations of up to 3 
  inches in the advisory area are expected.

* WHERE...Warning area includes areas along Highway 199 from Hayes
  Hill southward to O'Brien and the California border and the
  Kalmiopsis Wilderness. Advisory area includes lower elevation
  areas outside of the Illinois Valley (and Cave Junction in the
  Illinois Valley) to include Williams and Grants Pass. The advisory
  also includes Sexton Pass along Interstate 5.

* WHEN...Until 10 AM PST this morning.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Be 
  prepared for significant reductions in visibility at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD

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
  likely and poses a threat to life and property. Take protective
  action now.

&&

$$

CAZ080-032015-
/O.EXT.KMFR.WW.Y.0013.000000T0000Z-180304T0600Z/
/O.CON.KMFR.WS.W.0009.000000T0000Z-180303T1800Z/
Western Siskiyou County-
340 AM PST Sat Mar 3 2018

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 10 PM PST THIS
EVENING...
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...

* WHAT...Moderate snow. Additional snow accumulations of 3 to 6 
  inches in the warning area are expected. Additional snow 
  accumulations of 1 to 4 inches in the advisory area are 
  expected.

* WHERE...Warning area includes Etna Summit on Sawyers Bar Road
  and other areas mostly above 4000 feet. The warning area will 
  be downgraded into the advisory area after 10 AM. Advisory areas
  include Fort Jones, Etna and most other locations along Highway
  3, and Seiad Valley and Happy Camp and most areas along Highway
  96.

* WHEN...For the Winter Storm Warning, until 10 AM PST this 
  morning. For the Winter Weather Advisory, until 10 PM PST this 
  evening.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Be 
  prepared for significant reductions in visibility at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD

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
  likely and poses a threat to life and property. Take protective
  action now.

&&

$$

CAZ082-032015-
/O.EXT.KMFR.WW.Y.0013.000000T0000Z-180304T0600Z/
/O.CON.KMFR.WS.W.0010.000000T0000Z-180303T1200Z/
South Central Siskiyou County-
Including the cities of Mount Shasta and Mccloud
340 AM PST Sat Mar 3 2018

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 10 PM PST THIS
EVENING...
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST EARLY
THIS MORNING...

* WHAT...Moderate snow. Additional snow accumulations of 3 to 6 
  inches, with localized amounts up to 9 inches, in the warning 
  area are expected. Additional snow accumulations of 1 to 4 
  inches are expected in the advisory area.

* WHERE...Warning area includes Snowman's Summit on Highway 89 and
  Everitt Memorial Highway near Mount Shasta City. The warning
  area will be downgraded into the advisory area after 4 AM. Advisory
  area includes Dunsmuir, Mount Shasta City, and Black Butte 
  Summit on Interstate 5.

* WHEN...For the Winter Storm Warning, until 4 AM PST early this 
  morning. For the Winter Weather Advisory, until 10 PM PST this 
  evening.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Be 
  prepared for significant reductions in visibility at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD

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
  likely and poses a threat to life and property. Take protective
  action now.

&&

$$

CAZ081-032015-
/O.EXT.KMFR.WW.Y.0014.000000T0000Z-180304T0600Z/
Central Siskiyou County-
Including the city of Weed
340 AM PST Sat Mar 3 2018

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 10 PM PST THIS
EVENING...

* WHAT...Light to moderate snow with southeast wind gusts to 25 
  mph. Additional snow accumulations of 1 to 3 inches are 
  expected.

* WHERE...Central Siskiyou County to include Weed along 
  Interstate 5.

* WHEN...Until 10 PM PST this evening.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Be 
  prepared for reduced visibilities at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/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 https://www.tripcheck.com or http://quickmap.dot.ca.gov  
  for latest road conditions.

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

&&

$$

Visit us at https://www.weather.gov/Medford
098 
WWUS46 KMFR 031209
WSWMFR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Medford OR
409 AM PST Sat Mar 3 2018

CAZ082-040000-
/O.EXP.KMFR.WS.W.0010.000000T0000Z-180303T1200Z/
/O.CON.KMFR.WW.Y.0013.000000T0000Z-180304T0600Z/
South Central Siskiyou County-
Including the cities of Mount Shasta and Mccloud
409 AM PST Sat Mar 3 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...
...WINTER STORM WARNING HAS BEEN DOWNGRADED...

* WHAT...Moderate snow. Additional snow accumulations of 3 to 6
  inches over the mountains, with localized amounts up to 9 inches
  on Mount Shasta. Additional snow accumulations of 1 to 4 inches
  are expected in the valleys.

* WHERE...The mountainous area includes Snowman's Summit on
  Highway 89 and Everitt Memorial Highway near Mount Shasta City.
  The advisory area includes Dunsmuir, Mount Shasta City, and 
  Black Butte Summit on Interstate 5.

* WHEN...Until 10 PM PST this evening.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Be 
  prepared for significant reductions in visibility at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD

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
  occurring, and poses a threat to life and property. Take 
  protective action now.

&&

$$

ORZ024-031800-
/O.CON.KMFR.WS.W.0009.000000T0000Z-180303T1800Z/
/O.CON.KMFR.WW.Y.0013.000000T0000Z-180303T1800Z/
Eastern Curry County and Josephine County-
Including the cities of Grants Pass and Cave Junction
409 AM PST Sat Mar 3 2018

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

* WHAT...Moderate snow. Additional snow accumulations of 2 to 4 
  inches, with localized amounts up to 6 inches, in the warning 
  area are expected. Additional snow accumulations of up to 3 
  inches in the advisory area are expected.

* WHERE...Warning area includes areas along Highway 199 from 
  Hayes Hill southward to O'Brien and the California border and 
  the Kalmiopsis Wilderness. Advisory area includes lower 
  elevation areas outside of the Illinois Valley (and Cave 
  Junction in the Illinois Valley) to include Williams and 
  Grants Pass. The advisory also includes Sexton Pass along 
  Interstate 5.

* WHEN...Until 10 AM PST this morning.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Be 
  prepared for significant reductions in visibility at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD

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
  occurring, and poses a threat to life and property. Take 
  protective action now.

&&

$$

CAZ080-040000-
/O.CON.KMFR.WS.W.0009.000000T0000Z-180303T1800Z/
/O.CON.KMFR.WW.Y.0013.000000T0000Z-180304T0600Z/
Western Siskiyou County-
409 AM PST Sat Mar 3 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...

* WHAT...Moderate snow. Additional snow accumulations of 3 to 6 
  inches in the warning area are expected. Additional snow 
  accumulations of 1 to 4 inches in the advisory area are 
  expected.

* WHERE...Warning area includes Etna Summit on Sawyers Bar Road 
  and other areas mostly above 4000 feet. The warning area will 
  be downgraded into the advisory area after 10 AM. Advisory 
  areas include Fort Jones, Etna and most other locations along 
  Highway 3, and Seiad Valley and Happy Camp and most areas 
  along Highway 96.

* WHEN...For the Winter Storm Warning, until 10 AM PST this 
  morning. For the Winter Weather Advisory, until 10 PM PST this 
  evening.

* ADDITIONAL DETAILS...Plan on difficult travel conditions. Be 
  prepared for significant reductions in visibility at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/HAZARD

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
  occurring, and poses a threat to life and property. Take 
  protective action now.

&&

$$

CAZ081-040000-
/O.CON.KMFR.WW.Y.0014.000000T0000Z-180304T0600Z/
Central Siskiyou County-
Including the city of Weed
409 AM PST Sat Mar 3 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...

* WHAT...Light to moderate snow with southeast wind gusts to 25 
  mph. Additional snow accumulations of 1 to 3 inches are 
  expected.

* WHERE...Central Siskiyou County to include Weed along 
  Interstate 5.

* WHEN...Until 10 PM PST this evening.

* ADDITIONAL DETAILS...Plan on slippery road conditions. Be 
  prepared for reduced visibilities at times.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/mfr/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 https://www.tripcheck.com or http://quickmap.dot.ca.gov for
  latest road conditions.

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

&&

$$

Visit us at https://www.weather.gov/Medford

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 Mar 1, 10:19 PM PST, 40 minutes earlier.

Area forecast discussion, Mar 1, 10:19 PM PST, 40 minutes before
Area Forecast Discussion
National Weather Service Medford OR
1019 PM PST Thu Mar 1 2018

Updated AVIATION and MARINE Sections

.DISCUSSION...Winter storm impacts are being felt across much of
the forecast area this evening. Our main change this evening was to
upgrade the Winter Weather Advisory for the Illinois Valley to a
Warning. Deep west to southwest flow and very unstable conditions
are funneling showers into the Southern Oregon coast and inland,
to the Illinois Valley. We've received a report of 5 inches new
snow at Hayes Hill since this afternoon, and we expect plenty
more (12 to 18 inches likely at Hayes Hill) in portions of the
Illinois Valley through Saturday as a low pressure center moves
towards the coast Friday and keeps snow showers going there. Snow
levels will be at or below the current snow levels through
Saturday. This means places like Hayes Hill and Obrien will
continue to see moderate to heavy snow, while Cave Junction will
see snow tonight but maybe a mix of rain and snow Friday. Further
northward toward Sexton Pass on Interstate 5 and Camas Mountain on
Highway 42, we expect less overall precipitation but still
significant snow impacts. We'll be investigating this evening to
upgrade those areas to a Warning.

Another focus area is Mount Shasta City, and they have recorded
impressive snowfall the past 24 hours, but conditions should
generally improve after this evening as flow turns westerly and less
favorable for significant snowfall.

Elsewhere, the forecast is on track, with West Side Valleys expecting
some additional snow showers tonight, and with temperatures
cooling to near freezing, there will be some slippery roads in the
morning. Thus, the Winter Weather Advisory seems reasonable. It's
noteworthy that snow impacts Friday will be very limited east of
a line from Hayes Hill to Sexton Pass and west of the Cascades, so
we may will be noting that in the Winter Weather Advisory text.

Last but not least, moderate to heavy snow will impact portions of
the East Side through tonight, and there will be blowing and drifting
snow with very low visibility. Winter headlines cover the
expected snow impacts there.

Please see the previous discussion below for more information on
the active weather pattern and expected impacts.

&&

.AVIATION...02/06Z TAF CYCLE...Overall, expect a mix of VFR and
MVFR ceilings overnight through Friday as one disturbance exits to
the east and another moves onshore. Showers will be most numerous
along the coast and into the coast ranges. Terrain will occasionally
be obscured and conditions may lower to IFR at times in heavier
showers. Low-level wind shear is possible at KOTH/KRBG overnight and
Friday morning.

Gusty south to southeast winds peaking at 20-30 kt are expected for
most TAF sites Friday afternoon. Shasta Valley and east side areas
likely have the strongest wind gusts of 35-40 kt.

Another period of steady upslope snow will develop Friday in the
Mount Shasta region, especially in the afternoon and evening, so
ceilings will likely lower to IFR there once again. -Spilde

&&

.MARINE...Updated 830 PM PST Thursday 01 Mar 2018...High and steep
northwest swell will move into the waters late tonight, peaking
Friday morning at 18 to 20 feet. A low will move into the waters
late tonight, and this will bring another round of gale force winds
and hazardous seas Friday.

Winds will diminish Friday evening and seas will gradually subside
Saturday and Sunday, but the weakened low will linger, so it will
remain cold and unsettled with showers. Winds and seas will be
relatively calm Monday through Tuesday night with light winds and
seas at or below 9 feet. The next front will move in next Wednesday
or Thursday. -Spilde

&&

.PREV DISCUSSION... /Issued 253 PM PST Thu Mar 1 2018/

DISCUSSION...

Short Term...Tonight through Sunday Night...After a brief break
in the action this morning and afternoon, the next wave of
moisture and cold air is now making its way across the area. The
latest model runs have upped the winds across the East Side, and
also increased the amount of moisture flowing into the system.
Also concerning, the band of precipitation is expected to slow as
it crosses the Cascades and the East Side. Have bumped up the
snow amounts and upgraded the Winter Weather Advisory to a Warning
for portions of Klamath, Lake, and Modoc Counties. Major impact
will be not just snowfall, but blowing and drifting snow that may
produce whiteout conditions at times.

Meanwhile, the previously issued headlines remain in place, with
snow already falling to the valley floors of the Illinois Valley
and covering the roads of the Interstate 5 passes. Mount Shasta
City remain under a good upslope pattern as well, and snow
continue to fall there. The snow will increase in coverage as the
evening proceeds, with snow levels dropping to well below valley
floors by tonight. Once the band exits to the east, showers will
continue through the night and into Friday morning. Then the next
wave is expected to pass through the area as the vertically
stacked surface low and upper trough move on shore somewhere near
or north of Cape Blanco. This will be another major wind and
precipitation producer, and with cold air already here, snow
levels will remain low. All winter headlines will continue into
Saturday morning. For more details on amounts and timing, see the
winter weather message at WSWMFR.

The trough will meander overhead into Saturday night, finally
slipping off to the east by Sunday. Showers will continue during
this time, and snow levels will gradually rise and precipitation
will lighten over the course of the weekend. Showers should come
to an end by Sunday evening, with high pressure building in for
the first time in several days, and temperatures finally starting
to rise. -BPN

LONG TERM...Monday through Thursday night...Conditions begin to dry
out with partly cloudy skies expected on Monday. High temperatures
will rebound into the upper 40s to low 50s for many of the west side
valleys and into the 30s east of the Cascades. Lows, will start off
similar to what they were on Saturday night and slowly increase each
subsequent night...becoming near normal or slightly above normal by
the end of the forecast period.

The next system is now poised to arrive on the west coast around
Wednesday and Thursday. Snow levels will be around 4000 to 5000
feet, and it could bring some moderate precipitation to the area.
That being said, the GFS is the more progressive and stronger system
versus the ECMWF which is slower and allows the precipitation to
largely dissipate before reaching the coast. Overall, this system
could be a weak to moderate atmospheric river-type system that could
provide moderate to heavy precipitation to Curry County and portions
of western Siskiyou County. This forecast favors the GFS as ensemble
solutions tend to show a similar solution, but did add a little bit
of the ECMWF into the mix as solutions this far out tend to be
somewhere in between. -Schaaf

&&

.MFR WATCHES/WARNINGS/ADVISORIES...
OR...Winter Weather Advisory until 4 AM PST Friday for ORZ029>031.
     Winter Storm Warning until 4 AM PST Friday for ORZ029-030.
     Beach Hazards Statement until 4 AM PST Friday for ORZ021-022.
     Winter Weather Advisory until 7 AM PST Saturday above 1000 feet
     in the for ORZ021>026.
     Winter Storm Warning until 7 AM PST Saturday for ORZ024.
     High Surf Advisory from 4 AM to 4 PM PST Friday for ORZ021-022.
     Winter Weather Advisory until 7 AM PST Saturday for ORZ027-028.

CA...Winter Weather Advisory until 4 AM PST Friday for CAZ084-085.
     Winter Storm Warning until 4 AM PST Friday for CAZ085.
     Winter Weather Advisory until 7 AM PST Saturday for
     CAZ080-081-083.
     Winter Storm Warning until 7 AM PST Saturday for CAZ082-083.
     Winter Storm Warning until 7 AM PST Saturday for CAZ080.

Pacific Coastal Waters...Hazardous Seas Warning from 1 AM to 4 PM PST
     Friday for PZZ350-356-370-376.
     Gale Warning from 1 AM to 4 PM PST Friday for
     PZZ350-356-370-376.
     Small Craft Advisory for hazardous seas until 1 AM PST Friday
     for PZZ350-356-370-376.
     Small Craft Advisory for hazardous seas from 4 PM Friday to 4 PM
     PST Saturday for PZZ350-356-370-376.

NSK/BMS/MAS

In the hours before

Local storm report, Mar 1, 5:32 PM PST, 5 hours 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
532 PM PST THU MAR 1 2018

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

0531 PM     SNOW             3 E MEDFORD             42.34N 122.79W
03/01/2018  M1.4 INCH        JACKSON            OR   PUBLIC

            REPORTED AT 2000 FEET ELEVATION. TORREY
            PINES DRIVE, MEDFORD, OR.

&&

NSK
Local storm report, Mar 1, 5:45 PM PST, 5 hours 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
545 PM PST THU MAR 1 2018

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

0500 PM     HEAVY SNOW       4 NNE SELMA             42.33N 123.59W
03/01/2018  E5.0 INCH        JOSEPHINE          OR   DEPT OF HIGHWAYS

            HAYES HILL SUMMIT, ODOT. THE DURATION OF THE
            HEAVY SNOW EVENT WAS 5 HOURS.

&&
Local storm report, Mar 1, 6:06 PM PST, 4 hours 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
606 PM PST THU MAR 1 2018

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

0605 PM     HEAVY SNOW       BUTTE FALLS             42.54N 122.57W
03/01/2018  M3.5 INCH        JACKSON            OR   TRAINED SPOTTER

            VERY HEAVY SNOW IN A SHORT PERIOD OF TIME.
            SNOW ENDED. THE DURATION OF THE HEAVY SNOW
            EVENT WAS 1 HOUR 30 MINUTES.

&&
Local storm report, Mar 1, 8:53 PM PST, 2 hours 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
853 PM PST THU MAR 1 2018

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

0800 PM     HEAVY RAIN       7 ESE COOS BAY          43.35N 124.09W
03/01/2018  M2.39 INCH       COOS               OR   TRAINED SPOTTER

            THE DURATION OF THE HEAVY RAIN EVENT WAS 24
            HOURS.

&&
Local storm report, Mar 1, 10:47 PM PST, 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
1047 PM PST THU MAR 1 2018

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

0700 PM     SNOW             2 ESE MERLIN            42.51N 123.37W
03/01/2018  M1.0 INCH        JOSEPHINE          OR   TRAINED SPOTTER

            THE DURATION OF THE SNOW EVENT WAS 2 HOURS.

&&

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 1, 10:59 PM PSTWinter Weather AdvisoryMFRSiskiyou47 hr
Mar 2, 3:19 AM PSTWind AdvisoryMFRSiskiyou16 hr

Nearby

Winter Storm Warnings in California, 2018Every winter storm warning in 2018

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.