Alert archive / Oregon / Winter Storm Warnings in 2016

Winter Storm Warning 8, NWS Medford, OR

December 9, 20164 counties in Oregon

NWS Medford, OR issued this winter storm warning at Dec 9, 2016, 4:17 AM PST for 4 counties in Oregon. It took effect at Dec 9, 2016, 4:00 PM PST. It was in force for 12 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
Dec 9, 2016, 4:17 AM PST (12:17 UTC)
In effect from
Dec 9, 2016, 4:00 PM PST
Expired
Dec 10, 2016, 3:45 AM PST
In force
12 hr
Issued by
NWS Medford, OR

Counties Douglas County, OR, Jackson County, OR, Josephine County, OR, Klamath County, OR

The radar

The Medford radar (KMAX), 68 km from the middle of the area, began a volume at 12:20 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, 0.3 hours before the alert went out and 36 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 2016-12-09Temperature 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 12:00Z on 2016-12-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 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
802 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
500 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

459 
WWUS46 KMFR 091217
WSWMFR

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MEDFORD OR
417 AM PST FRI DEC 9 2016

...ANOTHER STRONG WINTER STORM BRINGS ANOTHER ROUND OF MODERATE
TO HEAVY SNOW TO THE MOUNTAINS AND EAST OF THE CASCADES TONIGHT
INTO SATURDAY MORNING...

.THE NEXT ROUND IN A SERIES OF WINTER STORMS MOVES INTO THE
REGION THIS EVENING. SNOW LEVELS START ABOVE 5000 FEET AND LOWER
BELOW 4000 FEET SATURDAY MORNING. A DRY SLOT MOVES INTO THE
REGION LATE MORNING, CUTTING OFF THE PRECIPITATION.

ORZ027-028-092030-
/O.NEW.KMFR.WS.W.0008.161210T0600Z-161210T1800Z/
/O.NEW.KMFR.WW.Y.0031.161210T0600Z-161210T1800Z/
SOUTH CENTRAL OREGON CASCADES-
SISKIYOU MOUNTAINS AND SOUTHERN OREGON CASCADES-
INCLUDING THE CITIES OF...CRATER LAKE...CRESCENT LAKE...
DIAMOND LAKE
417 AM PST FRI DEC 9 2016

...WINTER STORM WARNING IN EFFECT FROM 10 PM THIS EVENING TO
10 AM PST SATURDAY ABOVE 5000 FEET...
...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO
10 AM PST SATURDAY ABOVE 4000 FEET...

THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A WINTER STORM
WARNING FOR HEAVY SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM
10 PM THIS EVENING TO 10 AM PST SATURDAY. A WINTER WEATHER
ADVISORY HAS ALSO BEEN ISSUED. THIS WINTER WEATHER ADVISORY FOR
SNOW AND BLOWING SNOW IS IN EFFECT FROM 10 PM THIS EVENING TO 10
AM PST SATURDAY.

* SNOW ACCUMULATIONS...11 TO 15 INCHES ABOVE 5000 FEET AND 7 TO
  11 INCHES ABOVE 4000 FEET.

* WINDS...WEST WINDS 20 TO 30 MPH.

* ELEVATION...WARNING ABOVE 5000 FEET AND ADVISORY ABOVE 4000
  FEET. SNOW LEVELS WILL START ABOVE 6000 FEET FRIDAY AFTERNOON,
  AND LOWER BELOW 4000 FEET BY LATE SATURDAY MORNING.

* TIMING...SNOW WILL BEGIN TO REACH THE PASSES LATE EVENING, WITH
  THE HIGHEST RATES AROUND MIDNIGHT TO 5 AM. SNOWFALL RATES WILL
  DIMINISH THROUGH THE MORNING.

* LOCATIONS INCLUDE...HIGHWAYS 62...138...140 AND 230. 

* IMPACTS...SNOW WILL COMBINE WITH GUSTY WINDS TO CAUSE POSSIBLE
  PERIODS OF WHITEOUT CONDITIONS.

* VIEW THE HAZARD AREA IN DETAIL AT 
  HTTP://WEATHER.GOV/MEDFORD/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.

&&

$$

CAZ085-ORZ029>031-092030-
/O.NEW.KMFR.WW.Y.0031.161210T0600Z-161210T1800Z/
MODOC COUNTY-KLAMATH BASIN-
NORTHERN AND EASTERN KLAMATH COUNTY AND WESTERN LAKE COUNTY-
CENTRAL AND EASTERN LAKE COUNTY-
INCLUDING THE CITY OF...CHEMULT
417 AM PST FRI DEC 9 2016

...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO
10 AM PST SATURDAY...

THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 10 PM THIS
EVENING TO 10 AM PST SATURDAY.

* SNOW ACCUMULATIONS...3 TO 5 INCHES.

* WINDS...SOUTHWEST WINDS 10 TO 15 MPH.

* TIMING...SNOW WILL INCREASE LATE EVENING WITH SNOW LEVELS
  DROPPING TO 5000 FEET. SNOW LEVELS WILL DROP TO AROUND 400 FEET
  AFTER MIDNIGHT WITH SNOW RATES INCREASING ALSO. HEAVIEST SNOW
  RATES WILL BE FROM 1 AM TO 6 AM AND DECREASE THROUGH THE
  MORNING.

* LOCATIONS INCLUDE...HIGHWAY 97 NEAR CHEMULT...HIGHWAY 140 EAST
  OF BLY...THE WINTER RIM AND THE WARNERS.

* IMPACTS...SNOW MAY BE HEAVY AT TIMES...REDUCING VISIBILITIES.

* 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
5 follow-up statements
214 
WWUS46 KMFR 092024
WSWMFR

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MEDFORD OR
1224 PM PST FRI DEC 9 2016

...ANOTHER STRONG WINTER STORM BRINGS ANOTHER ROUND OF MODERATE
TO HEAVY SNOW TO THE MOUNTAINS AND EAST OF THE CASCADES TONIGHT
INTO SATURDAY MORNING...

.THE NEXT ROUND IN A SERIES OF WINTER STORMS MOVES INTO THE
REGION THIS EVENING. SNOW LEVELS START ABOVE 5000 FEET AND LOWER
BELOW 4000 FEET SATURDAY MORNING. A DRY SLOT MOVES INTO THE
REGION LATE MORNING... CUTTING OFF THE PRECIPITATION.

ORZ027-028-100430-
/O.CON.KMFR.WS.W.0008.161210T0600Z-161210T1800Z/
/O.CON.KMFR.WW.Y.0031.161210T0600Z-161210T1800Z/
SOUTH CENTRAL OREGON CASCADES-
SISKIYOU MOUNTAINS AND SOUTHERN OREGON CASCADES-
INCLUDING THE CITIES OF...CRATER LAKE...CRESCENT LAKE...
DIAMOND LAKE
1224 PM PST FRI DEC 9 2016

...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING
TO 10 AM PST SATURDAY ABOVE 5000 FEET...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS
EVENING TO 10 AM PST SATURDAY ABOVE 4000 FEET...

* SNOW ACCUMULATIONS...11 TO 15 INCHES ABOVE 5000 FEET AND 7 TO 
  11 INCHES ABOVE 4000 FEET. 

* WINDS...WEST WINDS 15 TO 30 MPH.

* ELEVATION...WARNING ABOVE 5000 FEET AND ADVISORY ABOVE 4000
  FEET. SNOW LEVELS WILL LOWER FROM 6000 FEET FRIDAY AFTERNOON TO BELOW
  4000 FEET BY LATE SATURDAY MORNING.

* TIMING...SNOW WILL BEGIN TO REACH THE PASSES LATE EVENING... 
  WITH THE HIGHEST RATES AROUND MIDNIGHT TO 5 AM. SNOWFALL RATES 
  WILL DIMINISH THROUGH THE MORNING. 

* LOCATIONS INCLUDE...HIGHWAYS 62...138...140 AND 230.

* IMPACTS...SNOW WILL COMBINE WITH GUSTY WINDS TO CAUSE POSSIBLE 
  PERIODS OF WHITEOUT CONDITIONS. 

* VIEW THE HAZARD AREA IN DETAIL AT 
  HTTP://WEATHER.GOV/MEDFORD/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. 

&&

$$

CAZ085-ORZ029>031-100430-
/O.CON.KMFR.WW.Y.0031.161210T0600Z-161210T1800Z/
MODOC COUNTY-KLAMATH BASIN-
NORTHERN AND EASTERN KLAMATH COUNTY AND WESTERN LAKE COUNTY-
CENTRAL AND EASTERN LAKE COUNTY-
INCLUDING THE CITY OF...CHEMULT
1224 PM PST FRI DEC 9 2016

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

* SNOW ACCUMULATIONS...3 TO 5 INCHES.

* WINDS...SOUTHWEST WINDS 15 TO 20 MPH.

* TIMING...SNOW WILL INCREASE LATE EVENING WITH SNOW LEVELS 
  DROPPING TO 5000 FEET. SNOW LEVELS WILL DROP TO AROUND 4000 
  FEET AFTER MIDNIGHT WITH SNOW RATES INCREASING ALSO. HEAVIEST 
  SNOW RATES WILL BE FROM 1 AM TO 6 AM AND DECREASE THROUGH THE 
  MORNING. 

* LOCATIONS INCLUDE...HIGHWAY 97 NEAR CHEMULT...HIGHWAY 140 EAST 
  OF BLY...THE WINTER RIM AND THE WARNERS. 

* IMPACTS...SNOW MAY BE HEAVY AT TIMES...REDUCING VISIBILITIES.

* 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. 

&&

$$

CZS
837 
WWUS46 KMFR 092230
WSWMFR

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MEDFORD OR
230 PM PST FRI DEC 9 2016

ORZ027-028-101130-
/O.CON.KMFR.WS.W.0008.161210T0600Z-161210T1800Z/
/O.CON.KMFR.WW.Y.0031.161210T0600Z-161210T1800Z/
SOUTH CENTRAL OREGON CASCADES-
SISKIYOU MOUNTAINS AND SOUTHERN OREGON CASCADES-
INCLUDING THE CITIES OF...CRATER LAKE...DIAMOND LAKE
230 PM PST FRI DEC 9 2016

...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING
TO 10 AM PST SATURDAY ABOVE 5000 FEET...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS
EVENING TO 10 AM PST SATURDAY ABOVE 4000 FEET...

* SNOW ACCUMULATIONS...11 TO 15 INCHES ABOVE 5000 FEET AND 7 TO 11
  INCHES ABOVE 4000 FEET.

* WINDS...WEST WINDS 15 TO 30 MPH.

* ELEVATION...WARNING INCLUDES ELEVATIONS ABOVE 5000 FEET AND
  ADVISORY INCLUDES ELEVATIONS ABOVE 4000 FEET. SNOW LEVELS WILL
  LOWER FROM 6000 FEET FRIDAY AFTERNOON TO BELOW 4000 FEET BY LATE
  SATURDAY MORNING.

* TIMING...SNOW WILL BEGIN TO AFFECT THE PASSES DURING THE LATE
  EVENING...THE HIGHEST RATES WILL BE AROUND MIDNIGHT TO 5 AM.
  SNOWFALL RATES WILL DIMINISH THROUGH SATURDAY MORNING.

* LOCATIONS INCLUDE...HIGHWAYS 62...138...140 AND 230.

* IMPACTS...SNOW WILL COMBINE WITH GUSTY WINDS TO CAUSE POSSIBLE 
  PERIODS OF WHITEOUT CONDITIONS. 

* VIEW THE HAZARD AREA IN DETAIL AT 
  HTTP://WEATHER.GOV/MEDFORD/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. 

&&

$$

ORZ029>031-101130-
/O.CON.KMFR.WW.Y.0031.161210T0600Z-161210T1800Z/
KLAMATH BASIN-
NORTHERN AND EASTERN KLAMATH COUNTY AND WESTERN LAKE COUNTY-
CENTRAL AND EASTERN LAKE COUNTY-
INCLUDING THE CITY OF...CHEMULT
230 PM PST FRI DEC 9 2016

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

* SNOW ACCUMULATIONS...3 TO 5 INCHES.

* WINDS...SOUTHWEST WINDS 15 TO 20 MPH.

* TIMING...SNOW WILL BEGIN TO FALL AROUND MIDNIGHT...THE HIGHEST
  RATES WILL BE AROUND MIDNIGHT TO 5 AM. SNOWFALL RATES WILL
  DIMINISH THROUGH SATURDAY MORNING.

* ELEVATION...ABOVE 4000 FEET

* LOCATIONS INCLUDE...HIGHWAY 97 NEAR CHEMULT...HIGHWAY 140 EAST 
  OF BLY...THE WINTER RIM AND THE WARNERS. 

* IMPACTS...SNOW MAY BE HEAVY AT TIMES...REDUCING VISIBILITIES.

* 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. 

&&

$$

CAZ085-101130-
/O.CON.KMFR.WW.Y.0031.161210T0600Z-161210T1800Z/
MODOC COUNTY-
230 PM PST FRI DEC 9 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS
EVENING TO 10 AM PST SATURDAY ABOVE 5500 FEET...

* SNOW ACCUMULATIONS...3 TO 6 INCHES.

* WINDS...SOUTHWEST WINDS 15 TO 20 MPH.

* ELEVATION...ABOVE 5500 FEET

* TIMING...SNOW WILL BEGIN TO ACCUMULATE AROUND MIDNIGHT...THE
  HIGHEST RATES WILL BE AROUND 3AM TO 7 AM. SNOWFALL RATES WILL
  DIMINISH THROUGH SATURDAY MORNING.

* LOCATIONS INCLUDE...WINTER RIM AND THE WARNERS.

* IMPACTS...SNOW MAY BE HEAVY AT TIMES...REDUCING VISIBILITIES.

* 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. 

&&

$$

CZS
222 
WWUS46 KMFR 092359
WSWMFR

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MEDFORD OR
359 PM PST FRI DEC 9 2016

ORZ027-100800-
/O.EXT.KMFR.WS.W.0008.161210T0000Z-161210T1800Z/
/O.CON.KMFR.WW.Y.0031.161210T0600Z-161210T1800Z/
SOUTH CENTRAL OREGON CASCADES-
INCLUDING THE CITIES OF...CRATER LAKE...DIAMOND LAKE
359 PM PST FRI DEC 9 2016

...WINTER STORM WARNING NOW IN EFFECT UNTIL 10 AM PST SATURDAY
ABOVE 5000 FEET...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS
EVENING TO 10 AM PST SATURDAY ABOVE 4000 FEET...

* SNOW ACCUMULATIONS...11 TO 15 INCHES ABOVE 5000 FEET AND 7 TO 11
  INCHES ABOVE 4000 FEET. LOCALLY HIGHER AMOUNTS ARE POSSIBLE
  NEAR CRATER LAKE NATIONAL PARK.

* WINDS...WEST WINDS 15 TO 30 MPH.

* ELEVATION...WARNING INCLUDES ELEVATIONS ABOVE 5000 FEET AND
  ADVISORY INCLUDES ELEVATIONS ABOVE 4000 FEET. SNOW LEVELS WILL
  LOWER FROM 6000 FEET THIS EVENING TO BELOW 4000 FEET BY LATE
  SATURDAY MORNING.

* TIMING...SNOW WILL AFFECT ELEVATIONS ABOVE 5000 FEET THIS
  EVENING THEN SNOW LEVELS LOWER OVERNIGHT. HIGHEST SNOWFALL RATES
  WILL BE FROM AROUND MIDNIGHT TO 5 AM. SNOWFALL RATES WILL
  DIMINISH THROUGH SATURDAY MORNING.

* LOCATIONS INCLUDE...HIGHWAYS 62...138...140 AND 230.

* IMPACTS...SNOW PACKED ROADS WILL CAUSE DANGEROUS DRIVING
  CONDITIONS. SNOW AND GUSTY WINDS WILL CAUSED REDUCED VISIBILITY
  AND LOCAL WHITEOUT CONDITIONS. 

* VIEW THE HAZARD AREA IN DETAIL AT 
  HTTP://WEATHER.GOV/MEDFORD/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. 

&&

$$

ORZ028-100800-
/O.EXT.KMFR.WS.W.0008.161210T0000Z-161210T1800Z/
/O.CON.KMFR.WW.Y.0031.161210T0600Z-161210T1800Z/
SISKIYOU MOUNTAINS AND SOUTHERN OREGON CASCADES-
359 PM PST FRI DEC 9 2016

...WINTER STORM WARNING NOW IN EFFECT UNTIL 10 AM PST SATURDAY
ABOVE 5000 FEET...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS
EVENING TO 10 AM PST SATURDAY ABOVE 4000 FEET...

* SNOW ACCUMULATIONS...11 TO 15 INCHES ABOVE 5000 FEET AND 7 TO 
  11 INCHES ABOVE 4000 FEET. 

* WINDS...WEST WINDS 15 TO 30 MPH.

* ELEVATION...WARNING INCLUDES ELEVATIONS ABOVE 5000 FEET AND 
  ADVISORY INCLUDES ELEVATIONS ABOVE 4000 FEET. SNOW LEVELS WILL 
  LOWER FROM 6000 FEET FRIDAY AFTERNOON TO BELOW 4000 FEET BY 
  LATE SATURDAY MORNING. 

* TIMING...SNOW WILL BEGIN TO AFFECT THE PASSES DURING THE LATE 
  EVENING...THE HIGHEST RATES WILL BE AROUND MIDNIGHT TO 5 AM. 
  SNOWFALL RATES WILL DIMINISH THROUGH SATURDAY MORNING. 

* LOCATIONS INCLUDE...HIGHWAYS 62...138...140 AND 230.

* IMPACTS...SNOW WILL COMBINE WITH GUSTY WINDS TO CAUSE POSSIBLE 
  PERIODS OF WHITEOUT CONDITIONS. 

* VIEW THE HAZARD AREA IN DETAIL AT 
  HTTP://WEATHER.GOV/MEDFORD/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. 

&&

$$

ORZ029>031-100800-
/O.CON.KMFR.WW.Y.0031.161210T0600Z-161210T1800Z/
KLAMATH BASIN-
NORTHERN AND EASTERN KLAMATH COUNTY AND WESTERN LAKE COUNTY-
CENTRAL AND EASTERN LAKE COUNTY-
INCLUDING THE CITY OF...CHEMULT
359 PM PST FRI DEC 9 2016

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

* SNOW ACCUMULATIONS...3 TO 5 INCHES.

* WINDS...SOUTHWEST WINDS 15 TO 20 MPH.

* TIMING...SNOW WILL BEGIN TO FALL AROUND MIDNIGHT...THE HIGHEST 
  RATES WILL BE AROUND MIDNIGHT TO 5 AM. SNOWFALL RATES WILL 
  DIMINISH THROUGH SATURDAY MORNING. 

* ELEVATION...ABOVE 4000 FEET

* LOCATIONS INCLUDE...HIGHWAY 97 NEAR CHEMULT...HIGHWAY 140 EAST 
  OF BLY...THE WINTER RIM AND THE WARNERS. 

* IMPACTS...SNOW MAY BE HEAVY AT TIMES...REDUCING VISIBILITIES.

* 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. 

&&

$$

CAZ085-100800-
/O.CON.KMFR.WW.Y.0031.161210T0600Z-161210T1800Z/
MODOC COUNTY-
359 PM PST FRI DEC 9 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS
EVENING TO 10 AM PST SATURDAY ABOVE 5500 FEET...

* SNOW ACCUMULATIONS...3 TO 6 INCHES.

* WINDS...SOUTHWEST WINDS 15 TO 20 MPH.

* ELEVATION...ABOVE 5500 FEET

* TIMING...SNOW WILL BEGIN TO ACCUMULATE AROUND MIDNIGHT...THE 
  HIGHEST RATES WILL BE AROUND 3AM TO 7 AM. SNOWFALL RATES WILL 
  DIMINISH THROUGH SATURDAY MORNING. 

* LOCATIONS INCLUDE...WINTER RIM AND THE WARNERS.

* IMPACTS...SNOW MAY BE HEAVY AT TIMES...REDUCING VISIBILITIES.

* 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. 

&&

$$
174 
WWUS46 KMFR 100611
WSWMFR

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MEDFORD OR
1011 PM PST FRI DEC 9 2016

ORZ027-101800-
/O.CON.KMFR.WS.W.0008.000000T0000Z-161210T1800Z/
/O.CON.KMFR.WW.Y.0031.000000T0000Z-161210T1800Z/
SOUTH CENTRAL OREGON CASCADES-
INCLUDING THE CITIES OF...CRATER LAKE...DIAMOND LAKE
1011 PM PST FRI DEC 9 2016

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY ABOVE 5000 FEET...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY ABOVE 4000 FEET...

* SNOW ACCUMULATIONS...11 TO 15 INCHES ABOVE 5000 FEET AND 7 TO 
  11 INCHES ABOVE 4000 FEET. LOCALLY HIGHER AMOUNTS ARE POSSIBLE 
  NEAR CRATER LAKE NATIONAL PARK. 

* WINDS...WEST WINDS 15 TO 30 MPH.

* ELEVATION...WARNING INCLUDES ELEVATIONS ABOVE 5000 FEET AND
  ADVISORY INCLUDES ELEVATIONS ABOVE 4000 FEET. SNOW LEVELS WILL
  LOWER TO BELOW 4000 FEET BY LATE SATURDAY MORNING.

* SNOWFALL RATES...UP TO AROUND 1 INCH PER HOUR THROUGH 5 AM.
  SNOWFALL RATES WILL DIMINISH SATURDAY MORNING.

* LOCATIONS INCLUDE...THE CASCADES FROM LAKE OF THE WOODS NORTH.
  THIS INCLUDES CRATER LAKE NATIONAL PARK AND DIAMOND LAKE
  AFFECTING HIGHWAYS 62...138...140 AND 230.

* IMPACTS...SNOW PACKED ROADS WILL CAUSE DANGEROUS DRIVING 
  CONDITIONS. SNOW AND GUSTY WINDS WILL CAUSED REDUCED 
  VISIBILITY AND LOCAL WHITEOUT CONDITIONS. 

* VIEW THE HAZARD AREA IN DETAIL AT 
  HTTP://WEATHER.GOV/MEDFORD/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. 

&&

$$

ORZ028-101800-
/O.CON.KMFR.WS.W.0008.000000T0000Z-161210T1800Z/
/O.CON.KMFR.WW.Y.0031.000000T0000Z-161210T1800Z/
SISKIYOU MOUNTAINS AND SOUTHERN OREGON CASCADES-
1011 PM PST FRI DEC 9 2016

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY ABOVE 5000 FEET...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY ABOVE 4000 FEET...

* SNOW ACCUMULATIONS...11 TO 15 INCHES ABOVE 5000 FEET AND 7 TO 
  11 INCHES ABOVE 4000 FEET. 

* WINDS...WEST WINDS 15 TO 30 MPH.

* ELEVATION...WARNING INCLUDES ELEVATIONS ABOVE 5000 FEET AND
  ADVISORY INCLUDES ELEVATIONS ABOVE 4000 FEET. SNOW LEVELS WILL
  LOWER TO BELOW 4000 FEET BY LATE SATURDAY MORNING.

* SNOWFALL RATES...UP TO AROUND 1 INCH PER HOUR THROUGH 5 AM.
  SNOWFALL RATES WILL DIMINISH SATURDAY MORNING.

* LOCATIONS INCLUDE...HIGHWAY 62 AND HIGHWAY 140 NEAR LAKE OF THE
  WOODS.

* IMPACTS...SNOW PACKED ROADS WILL CAUSE DANGEROUS DRIVING 
  CONDITIONS. SNOW AND GUSTY WINDS WILL CAUSED REDUCED 
  VISIBILITY AND LOCAL WHITEOUT CONDITIONS.

* VIEW THE HAZARD AREA IN DETAIL AT 
  HTTP://WEATHER.GOV/MEDFORD/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. 

&&

$$

ORZ029>031-101800-
/O.CON.KMFR.WW.Y.0031.000000T0000Z-161210T1800Z/
KLAMATH BASIN-
NORTHERN AND EASTERN KLAMATH COUNTY AND WESTERN LAKE COUNTY-
CENTRAL AND EASTERN LAKE COUNTY-
INCLUDING THE CITY OF...CHEMULT
1011 PM PST FRI DEC 9 2016

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

* SNOW ACCUMULATIONS...3 TO 5 INCHES.

* WINDS...SOUTHWEST WINDS 15 TO 20 MPH.

* ELEVATION...ABOVE 4000 FEET.

* SNOWFALL RATES...MOSTLY ONE HALF TO 1 INCH PER HOUR THROUGH 5
  AM. SNOWFALL RATES WILL DIMINISH SATURDAY MORNING.

* LOCATIONS INCLUDE...HIGHWAY 97 NEAR CHEMULT...HIGHWAY 140 EAST
  OF BLY...WINTER RIM AND THE WARNER MOUNTAINS.

* IMPACTS...SNOW MAY BE HEAVY AT TIMES...REDUCING VISIBILITIES.
  SNOW COVERED ROADS WILL MAKE TRAVEL DIFFICULT.

* 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. 

&&

$$

CAZ085-101800-
/O.CON.KMFR.WW.Y.0031.000000T0000Z-161210T1800Z/
MODOC COUNTY-
1011 PM PST FRI DEC 9 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST
SATURDAY ABOVE 5500 FEET...

* SNOW ACCUMULATIONS...3 TO 6 INCHES.

* WINDS...SOUTHWEST WINDS 15 TO 20 MPH.

* ELEVATION...ABOVE 5500 FEET.

* TIMING...SNOW AT VARYING RATES OVERNIGHT INTO SATURDAY MORNING,
  BUT ONE HALF TO 1 INCH PER HOUR IS POSSIBLE FROM AROUND 3 AM TO
  7 AM. SNOWFALL RATES WILL DIMINISH THROUGH SATURDAY MORNING.

* LOCATIONS INCLUDE...THE WARNER MOUNTAINS.

* IMPACTS...SNOW MAY BE HEAVY AT TIMES...REDUCING VISIBILITIES.
  SNOW COVERED ROADS WILL MAKE TRAVEL DIFFICULT.

* 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. 

&&

$$

MAS
402 
WWUS46 KMFR 101145
WSWMFR

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MEDFORD OR
345 AM PST SAT DEC 10 2016

ORZ027-028-101245-
/O.CAN.KMFR.WS.W.0008.000000T0000Z-161210T1800Z/
/O.CAN.KMFR.WW.Y.0031.000000T0000Z-161210T1800Z/
SOUTH CENTRAL OREGON CASCADES-
SISKIYOU MOUNTAINS AND SOUTHERN OREGON CASCADES-
345 AM PST SAT DEC 10 2016

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

THE NATIONAL WEATHER SERVICE IN MEDFORD HAS CANCELLED THE WINTER
STORM WARNING. THE WINTER WEATHER ADVISORY HAS BEEN CANCELLED. 

THE FRONT THAT BROUGHT STEADY SNOW TO THE CASCADES CONTINUES TO
MOVE SOUTH WITH SNOW SHOWERS CONTINUING BEHIND.

$$

ORZ029>031-101800-
/O.CON.KMFR.WW.Y.0031.000000T0000Z-161210T1800Z/
KLAMATH BASIN-
NORTHERN AND EASTERN KLAMATH COUNTY AND WESTERN LAKE COUNTY-
CENTRAL AND EASTERN LAKE COUNTY-
345 AM PST SAT DEC 10 2016

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

* SNOW ACCUMULATIONS...ADDITIONAL 1 TO 2 INCHES.

* WINDS...SOUTHWEST WINDS 15 TO 20 MPH.

* ELEVATION...ABOVE 4000 FEET.

* SNOWFALL RATES...MOSTLY ONE HALF TO 1 INCH PER HOUR THROUGH 5 
  AM. SNOWFALL RATES WILL DIMINISH SATURDAY MORNING. 

* LOCATIONS INCLUDE...HIGHWAY 140 EAST OF BLY...WINTER RIM AND
  THE WARNER MOUNTAINS.

* IMPACTS...SNOW MAY BE HEAVY AT TIMES...REDUCING VISIBILITIES. 
  SNOW COVERED ROADS WILL MAKE TRAVEL DIFFICULT. 

* 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. 

&&

$$

CAZ085-101800-
/O.CON.KMFR.WW.Y.0031.000000T0000Z-161210T1800Z/
MODOC COUNTY-
345 AM PST SAT DEC 10 2016

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING ABOVE 5500 FEET...

* SNOW ACCUMULATIONS...ADDITIONAL 1 TO 3 INCHES.

* WINDS...SOUTHWEST WINDS 15 TO 20 MPH.

* ELEVATION...ABOVE 5500 FEET.

* TIMING...ONE HALF TO 1 INCH PER HOUR IS POSSIBLE FROM AROUND 3
  AM TO 7 AM. SNOWFALL RATES WILL DIMINISH THROUGH SATURDAY
  MORNING.

* LOCATIONS INCLUDE...THE WARNER MOUNTAINS.

* IMPACTS...SNOW MAY BE HEAVY AT TIMES...REDUCING VISIBILITIES. 
  SNOW COVERED ROADS WILL MAKE TRAVEL DIFFICULT. 

* 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

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 Dec 8, 10:10 PM PST, 6 hours 7 minutes earlier.

Area forecast discussion, Dec 8, 10:10 PM PST, 6 hours 7 minutes before
Area Forecast Discussion
National Weather Service Medford OR
1010 PM PST Thu Dec 8 2016

.Updated aviation discussion.

.DISCUSSION...A relatively quiet and warm night, compared to last
night, is shaping up over the forecast area. A frontal boundary is
lingering over the forecast area tonight, and broad overrunning will
yield a good chance for precipitation over Southern Oregon and
Northern California. Snow levels are generally 5000-6000 feet
tonight, and with precipitation of light to moderate intensity,
we're not expecting much in terms of snowfall impacts.

Winds will remain gusty through the morning in the Shasta Valley and
portions of the East Side. In fact, a solid 50kt 700mb flow
continues through Friday evening, so expect high terrain areas and
the Summer Lake area to remain breezy to windy through that time.

Weather will remain generally wet with gradually lowering snow
levels over the weekend. Please see the previous discussion below for
more details on the active weather pattern.

&&

.AVIATION...09/06Z TAF CYCLE...Moist, onshore flow will keep lots of
clouds and showers going over the west side. Mountain obscurations
are being observed now west of the Cascades, and this will continue
through tomorrow for much of the forecast area. Cigs and vis will be
a mix of VFR and MVFR this evening but with some IFR mixed in,
mainly along the coast. On the east side there are fewer showers,
but similarly low cigs. Conditions are expected to worsen overnight,
especially in the valleys as the air mass cools, clouds lower, and
some fog/mist develops. Conditions will improve tomorrow afternoon
as clouds and cigs lift, but increasing showers will likely bring
worsening conditions again late afternoon and evening. -Wright/SK

&&

.MARINE...Updated 230 PM PST Thursday 8 December 2016...Low pressure
has moved north of us, and winds are diminishing. As a result, the
gale warning has been canceled. Winds will ramp up again tomorrow as
another low pressure system moves by to our north, but winds are
still expected to remain below gales. Seas are also lowering this
afternoon, but the combination of continued wind wave and increasing
fresh swell will keep seas elevated through Friday, especially over
the waters north of Cape Blanco where wind waves will be higher.

Models continue to struggle with an incoming west swell Friday night
and Saturday, but all guidance still shows a large enough swell to
keep the Hazardous seas watch going. Once this shows up on buoys
further offshore, we will be able to get a better handle on it and
adjust our headlines accordingly. For now, it just bears watching.

Whatever ultimately becomes of Saturday's swell, relatively calmer
weather is expected for Sunday through early next week. The storm
track may become active again later next week. -Wright

&&

PREV DISCUSSION... /Issued 310 PM PST Thu Dec 8 2016/

SHORT TERM...Tonight through Sunday night.
Temperatures have warmed up above freezing for most locations.
The only holdout is east of the Cascades, but even then a few
locations in the higher elevations are starting to warm up some. I
still could not rule out some light snow showers in northern
Klamath and Lake County, the bulk of the precipitation and coldest
air mass is north ofthe area. Currently we still have a winter
advisory out until 4 pm pst and given temperatures are still below
freezing in the areas that are affected and spotty precipitation,
we'll continue to let that ride.

The high res short range models suggest we'll catch a break in the
weather tonight. A few showers will continue to persist mainly west
of the Cascades, but this will likely be a high pop/low QPF event.
Suspect the NAM and GFS may be a bit overdone given they hint at
weak ridging tonight. So have adjusted QPF amounts down and kept the
higher amounts in the northern Cascades and south Coastal mountains.

The pattern will remain active through the weekend with a persistent
fast, moist west flow aloft. In fact 300 mb winds near or over 100
kts will remain near or over the area. Showers will be on the
increase during the day Friday, mainly west of the Cascades and this
will continue into Friday evening. Snow levels are expected to hover
between 5000 and 5500 feet, therefore snow should be mainly confined
to the higher terrain like Diamond Lake and Crater Lake.

The models show a good slug of moisture associated with a wave of
low pressure moving into Northern California and Southwest Oregon
overnight Friday into Saturday. Right now it does not look like snow
levels will stay above Mount Shasta, but there's a chance portions
of highway 97 northeast of Weed could get some accumulating snow.

A cold front will move through Saturday as the wave of low pressure
moves east, but precipitation should be on the decrease from north
to south. Meanwhile valley rain and mountain snow showers will
persist mainly along and west of the Cascades Saturday through
Sunday. -Petrucelli

LONG TERM...Monday through Thursday.

Day-to-day model consistency regarding Monday is low to moderate.
The trend is to have a lower amplitude upper level pattern and also
a slower evolution of the pattern. There was concern yesterday for
an atmospheric river affecting our area Monday night into Tuesday.
This concern has diminished with a higher probability that our
region will instead be affected by a colder but weaker northern
stream of the upper level jet. The warmer/stronger/wetter system is
now indicated by both the GFS and ECMWF to be aimed at the San
Francisco Bay area and central Sierra Nevada early Tuesday through
Tuesday night. During that time...a cold but weak upper level trough
is likely to track across Washington and northern Oregon. That will
place a chance of light showers/snow showers across our area with
the highest probability across Douglas County and northern portions
of Klamath and Lake Counties. High temperatures and snow levels have
been adjusted a bit lower with levels most likely to be around 3000
to 4000 feet.

Uncertainty increases on Wednesday. The 12Z GFS is less aggressive
than the ECMWF with ridging over southern California and the 18Z GFS
even more so. The GFS solution would keep nearly all of the
precipitation aimed south of our area...perhaps brushing southern
Siskiyou County. Meantime, the ECMWF indicates the flow aloft to
back from west to southwest with a more progressive pattern sending
significant amounts of precipitation into our area. The air mass
would also warm in this scenario with snow levels increasing to
around 4500 to 5500 feet.

Confidence is low in the forecast for day 7/Thursday. The
aforementioned system may still be affecting our area or the area
may be in a cooler post-frontal regime of light showers/snow showers.
-DW

&&

.MFR WATCHES/WARNINGS/ADVISORIES...
OR...High Wind Warning until 1 AM PST Friday for ORZ030-031.

CA...High Wind Warning until 1 AM PST Friday for CAZ085.
     Wind Advisory until 4 AM PST Friday for CAZ081.

Pacific Coastal Waters...Small Craft Advisory until 4 PM PST Friday
for PZZ356-376.      Hazardous Seas Watch from Friday afternoon
through Saturday      afternoon for PZZ350-356-370-376.      Small
Craft Advisory for hazardous seas until 4 PM PST Saturday      for
PZZ356.      Hazardous Seas Warning until 4 PM PST Friday for PZZ350-
370.

NSK/DW/TRW

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 9, 3:16 AM PSTSmall Craft AdvisoryMFR71 hr
Dec 9, 4:17 AM PSTWinter Weather AdvisoryMFRDouglas, Jackson, Josephine, Klamath, Lake30 hr

Nearby

Winter Storm Warnings in Oregon, 2016Every winter storm warning in 2016

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.