Alert archive / California / Winter Storm Warnings in 2021
Winter Storm Warning 3, NWS Medford, OR
NWS Medford, OR issued this winter storm warning at Jan 29, 2021, 3:11 PM PST for Siskiyou County, California. It took effect at Jan 30, 2021, 10:00 PM PST. It was in force for 17 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
- Jan 29, 2021, 3:11 PM PST (23:11 UTC)
- In effect from
- Jan 30, 2021, 10:00 PM PST
- Expired
- Jan 31, 2021, 2:46 PM PST
- In force
- 17 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 23:10 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, 11.2 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.
- Mixed-layer CAPE
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 546 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- -17 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
470 WWUS46 KMFR 292311 WSWMFR URGENT - WINTER WEATHER MESSAGE National Weather Service Medford OR 311 PM PST Fri Jan 29 2021 ...Moderate to Heavy Wet Snow Expected Mostly Above 3500 Feet In Siskiyou County Saturday Through Monday... .Tonight through Saturday light snow showers are expected across the mountains and in the Mount Shasta area with little to no travel impacts expected. Saturday night snowfall rates are expected to increase to moderate, at times, with snow levels likely to be near 3500 feet. Sunday night into Monday moderate to heavy precipitation rates are expected with snow levels most likely to be in the 3500 to 4000 foot range. While confidence is high in precipitation rates during the mentioned time periods, the snowfall forecast is fairly complex, so be advised that snow levels could vary up or down by as much as 1,000 feet from the current forecast, especially Sunday through Monday. Please check future forecast for updates. CAZ082-301500- /O.NEW.KMFR.WS.W.0003.210131T0600Z-210201T0600Z/ /O.NEW.KMFR.WW.Y.0012.210131T0600Z-210201T0600Z/ /O.NEW.KMFR.WS.A.0003.210201T0600Z-210202T0600Z/ South Central Siskiyou County- Including the city of Mount Shasta 311 PM PST Fri Jan 29 2021 ...WINTER STORM WARNING IN EFFECT FROM 10 PM SATURDAY TO 10 PM PST SUNDAY ABOVE 4000 FEET... ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM SATURDAY TO 10 PM PST SUNDAY ABOVE 3500 FEET... ...WINTER STORM WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY EVENING ABOVE 3500 FEET... * WHAT...For the Winter Storm Warning above 4000 feet, heavy wet snow expected. Total snow accumulations of 10 to 15 inches. Winds gusting around 45 mph above 6500 foot elevations. For the Winter Weather Advisory above 3500 feet, wet snow expected. Total snow accumulations of 6 to 10 inches. For the Winter Storm Watch above 3500 feet, heavy wet snow possible. Total snow accumulations of 10 to 20 inches possible. * WHERE...The Winter Storm Warning above 4000 feet includes areas above Mount Shasta City, with primary impacts expected between McCloud and Mount Shasta City along Highway 89 at Snowmans Summit and on the Mount Shasta Ski Park Road. The Winter Weather Advisory above 3500 feet includes Black Butte Summit on Interstate 5 and portions of Mount Shasta City above 3500 feet. The Winter Storm watch includes all of the above mentioned areas. * WHEN...For the Winter Storm Warning and Winter Weather Advisory, from 10 PM Saturday to 10 PM PST Sunday. For the Winter Storm Watch, from Sunday evening through Monday evening. * IMPACTS...Travel could be difficult for those unprepared for wintry travel Saturday night into Sunday evening in the advisory area. Travel could be very difficult to impossible in the warning area and watch area during the mentioned time period. The hazardous conditions could impact weekend travel and the Monday morning commute. * ADDITIONAL DETAILS...Confidence is high in precipitation and in snowfall above 4500 feet for the above mentioned period. However, confidence in snow levels in the 3000 to 4500 foot range is generally low, as precipitation rates are likely to be their highest when snow levels are projected to rise. Usually, snow levels fall in this area with heavy precipitation rates. Please check the forecast for updates if you will be traveling in the Mount Shasta area during this time period. * 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 * See http://quickmap.dot.ca.gov for latest road conditions. && $$ CAZ083-301500- /O.NEW.KMFR.WW.Y.0012.210131T0600Z-210201T0600Z/ /O.NEW.KMFR.WS.A.0003.210201T0600Z-210202T0600Z/ North Central and Southeast Siskiyou County- Including the city of Tennant 311 PM PST Fri Jan 29 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM SATURDAY TO 10 PM PST SUNDAY ABOVE 3500 FEET... ...WINTER STORM WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY EVENING ABOVE 3500 FEET... * WHAT...For the Winter Weather Advisory above 3500 feet, wet snow expected. Total snow accumulations of 6 to 9 inches with locally higher amounts on Mount Shasta. Winds gusting above 45 mph above 5500 foot elevations. For the Winter Storm Watch above 3500 feet, heavy wet snow possible. Total snow accumulations of up to 15 inches possible. Winds could gust as high as 45 mph. * WHERE...North Central and Southeast Siskiyou County. * WHEN...For the Winter Weather Advisory, from 10 PM Saturday to 10 PM PST Sunday. For the Winter Storm Watch, from Sunday evening through Monday evening. * IMPACTS...Travel could be very difficult to impossible during the Winter Weather Advisory. The hazardous conditions could impact commutes Monday. Gusty winds could bring down tree branches. * View the hazard area in detail at https://www.wrh.noaa.gov/mfr/HAZARD PRECAUTIONARY/PREPAREDNESS ACTIONS... * Slow down and allow extra time to reach your destination. * Carry tire chains and be prepared for snow covered roads and limited visibilities. * See http://quickmap.dot.ca.gov for latest road conditions. * A Winter Weather Advisory for snow means that periods of snow will cause travel difficulties. && $$ CAZ080-301500- /O.NEW.KMFR.WW.Y.0012.210131T0600Z-210201T0600Z/ /O.NEW.KMFR.WS.A.0003.210201T0600Z-210202T0600Z/ Western Siskiyou County- 311 PM PST Fri Jan 29 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM SATURDAY TO 10 PM PST SUNDAY ABOVE 4500 FEET... ...WINTER STORM WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY EVENING ABOVE 4000 FEET... * WHAT...For the Winter Weather Advisory above 4500 feet, wet snow expected. Total snow accumulations of 8 to 16 inches. Winds gusting as high as 45 mph. For the Winter Storm Watch above 4000 feet, heavy wet snow possible. Total snow accumulations of 10 to 20 inches possible. Winds could gust as high as 35 mph. * WHERE...Western Siskiyou County. * WHEN...For the Winter Weather Advisory, from 10 PM Saturday to 10 PM PST Sunday. For the Winter Storm Watch, from Sunday evening through Monday evening. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...Snow is expected to be heavy and wet. If in the backcountry where there is existing significant snowpack, beware of avalanche potential. * 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. && $$ BTL Visit us at https://www.weather.gov/Medford
4 follow-up statements
374 WWUS46 KMFR 301154 WSWMFR URGENT - WINTER WEATHER MESSAGE National Weather Service Medford OR 354 AM PST Sat Jan 30 2021 ...Moderate to Heavy Wet Snow Expected Mostly Above 3500 Feet In Siskiyou County Saturday Through Monday... .Tonight through Saturday light snow showers are expected across the mountains and in the Mount Shasta area with little to no travel impacts expected. Saturday night snowfall rates are expected to increase to moderate, at times, with snow levels likely to be near 3500 feet. Sunday night into Monday moderate to heavy precipitation rates are expected with snow levels most likely to be in the 3500 to 4000 foot range. While confidence is high in precipitation rates during the mentioned time periods, the snowfall forecast is fairly complex, so be advised that snow levels could vary up or down by as much as 1,000 feet from the current forecast, especially Sunday through Monday. Please check future forecast for updates. CAZ082-310000- /O.CON.KMFR.WS.W.0003.210131T0600Z-210201T0600Z/ /O.CON.KMFR.WW.Y.0012.210131T0600Z-210201T0600Z/ /O.CON.KMFR.WS.A.0003.210201T0600Z-210202T0600Z/ South Central Siskiyou County- Including the city of Mount Shasta 354 AM PST Sat Jan 30 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 10 PM PST SUNDAY ABOVE 4000 FEET... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 10 PM PST SUNDAY ABOVE 3500 FEET... ...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY EVENING ABOVE 3500 FEET... * WHAT...For the Winter Storm Warning above 4000 feet, heavy wet snow expected. Total snow accumulations of 10 to 15 inches. Winds gusting around 45 mph above 6500 foot elevations. For the Winter Weather Advisory above 3500 feet, wet snow expected. Total snow accumulations of 6 to 10 inches. For the Winter Storm Watch above 3500 feet, heavy wet snow possible. Total snow accumulations of 10 to 20 inches possible. * WHERE...The Winter Storm Warning above 4000 feet includes areas above Mount Shasta City, with primary impacts expected between McCloud and Mount Shasta City along Highway 89 at Snowmans Summit and on the Mount Shasta Ski Park Road. The Winter Weather Advisory above 3500 feet includes Black Butte Summit on Interstate 5 and portions of Mount Shasta City above 3500 feet. The Winter Storm watch includes all of the above mentioned areas. * WHEN...For the Winter Storm Warning and Winter Weather Advisory, from 10 PM Saturday to 10 PM PST Sunday. For the Winter Storm Watch, from Sunday evening through Monday evening. * IMPACTS...Travel could be difficult for those unprepared for wintry travel Saturday night into Sunday evening in the advisory area. Travel could be very difficult to impossible in the warning area and watch area during the mentioned time period. The hazardous conditions could impact weekend travel and the Monday morning commute. * ADDITIONAL DETAILS...Confidence is high in precipitation and in snowfall above 4500 feet for the above mentioned period. However, confidence in snow levels in the 3000 to 4500 foot range is generally low, as precipitation rates are likely to be their highest when snow levels are projected to rise. Usually, snow levels fall in this area with heavy precipitation rates. Please check the forecast for updates if you will be traveling in the Mount Shasta area during this time period. * 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 * See http://quickmap.dot.ca.gov for latest road conditions. && $$ CAZ083-310000- /O.CON.KMFR.WW.Y.0012.210131T0600Z-210201T0600Z/ /O.CON.KMFR.WS.A.0003.210201T0600Z-210202T0600Z/ North Central and Southeast Siskiyou County- Including the city of Tennant 354 AM PST Sat Jan 30 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 10 PM PST SUNDAY ABOVE 3500 FEET... ...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY EVENING ABOVE 3500 FEET... * WHAT...For the Winter Weather Advisory above 3500 feet, wet snow expected. Total snow accumulations of 6 to 9 inches with locally higher amounts on Mount Shasta. Winds gusting above 45 mph above 5500 foot elevations. For the Winter Storm Watch above 3500 feet, heavy wet snow possible. Total snow accumulations of up to 15 inches possible. Winds could gust as high as 45 mph. * WHERE...North Central and Southeast Siskiyou County. * WHEN...For the Winter Weather Advisory, from 10 PM Saturday to 10 PM PST Sunday. For the Winter Storm Watch, from Sunday evening through Monday evening. * IMPACTS...Travel could be very difficult to impossible during the Winter Weather Advisory. The hazardous conditions could impact commutes Monday. Gusty winds could bring down tree branches. * 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. && $$ CAZ080-310000- /O.CON.KMFR.WW.Y.0012.210131T0600Z-210201T0600Z/ /O.CON.KMFR.WS.A.0003.210201T0600Z-210202T0600Z/ Western Siskiyou County- 354 AM PST Sat Jan 30 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 10 PM PST SUNDAY ABOVE 4500 FEET... ...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY EVENING ABOVE 4000 FEET... * WHAT...For the Winter Weather Advisory above 4500 feet, wet snow expected. Total snow accumulations of 8 to 16 inches. Winds gusting as high as 45 mph. For the Winter Storm Watch above 4000 feet, heavy wet snow possible. Total snow accumulations of 10 to 20 inches possible. Winds could gust as high as 35 mph. * WHERE...Western Siskiyou County. * WHEN...For the Winter Weather Advisory, from 10 PM Saturday to 10 PM PST Sunday. For the Winter Storm Watch, from Sunday evening through Monday evening. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...Snow is expected to be heavy and wet. If in the backcountry where there is existing significant snowpack, beware of avalanche potential. * View the hazard area in detail at https://www.wrh.noaa.gov/mfr/HAZARD PRECAUTIONARY/PREPAREDNESS ACTIONS... * Slow down and allow extra time to reach your destination. * Carry tire chains and be prepared for snow covered roads and limited visibilities. * See http://quickmap.dot.ca.gov for latest road conditions. * A Winter Weather Advisory for snow means that periods of snow will cause travel difficulties. && $$ Visit us at https://www.weather.gov/Medford
437 WWUS46 KMFR 302335 WSWMFR URGENT - WINTER WEATHER MESSAGE National Weather Service Medford OR 335 PM PST Sat Jan 30 2021 ...Moderate to Heavy Wet Snow Expected Mostly Above 3500 Feet In Siskiyou County Tonight Through Tuesday... .Later this evening through early Monday morning snowfall rates are expected to increase to moderate, at times, across the Mount Shasta area with the snow level likely above 3500 to 4000 feet. Monday through Tuesday morning moderate to heavy precipitation rates are expected with snow level most likely to be in the 3500 to 4500 foot range. While confidence is high in precipitation rates during the mentioned time periods, be advised that snow levels could vary up or down by as much as 500 feet from the current forecast, especially Monday into Tuesday. Please check future forecast for updates. CAZ083-311500- /O.EXB.KMFR.WS.W.0003.210131T0600Z-210201T1200Z/ /O.EXT.KMFR.WW.Y.0012.210131T0600Z-210201T1200Z/ /O.EXT.KMFR.WS.A.0003.210201T1200Z-210202T1800Z/ North Central and Southeast Siskiyou County- Including the city of Tennant 335 PM PST Sat Jan 30 2021 ...WINTER STORM WARNING IN EFFECT FROM 10 PM THIS EVENING TO 4 AM PST MONDAY ABOVE 4500 FEET... ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 10 PM THIS EVENING TO 4 AM PST MONDAY ABOVE 3500 FEET... ...WINTER STORM WATCH NOW IN EFFECT FROM LATE SUNDAY NIGHT THROUGH TUESDAY MORNING ABOVE 3500 FEET... * WHAT...For the Winter Storm Warning above 4500 feet, heavy wet snow expected. Total snow accumulations 9 to 14 inches expected. Winds gusts 45 to 65 mph are possible above 6500 foot elevations. For the Winter Weather Advisory above 3500 feet, wet snow expected. Total snow accumulations of 4 to 9 inches expected. For the Winter Storm Watch above 3500 feet, heavy snow possible. Total snow accumulations of 10 to 20 inches possible with wind gusts 45 to 65 mph above 6500 foot elevations. * WHERE...The Winter Storm Warning above 4500 feet includes Mount Shasta and areas northeast of the mountain, but south of Tennant, as does the advisory. The Winter Storm watch includes all of the above mentioned areas. * WHEN...For the Winter Storm Warning and Winter Weather Advisory, from 10 PM this evening to 4 AM PST Monday. For the Winter Storm Watch, from late Sunday night through Tuesday morning. * IMPACTS...Travel could be very difficult to impossible in the warning and watch areas. The hazardous conditions could impact commutes Monday and Tuesday. Heavy wet snow could bring down tree branches and damage power lines. * 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. && $$ CAZ082-311500- /O.EXT.KMFR.WS.W.0003.210131T0600Z-210201T1200Z/ /O.EXT.KMFR.WW.Y.0012.210131T0600Z-210201T1200Z/ /O.EXT.KMFR.WS.A.0003.210201T1200Z-210202T1800Z/ South Central Siskiyou County- 335 PM PST Sat Jan 30 2021 ...WINTER STORM WARNING NOW IN EFFECT FROM 10 PM THIS EVENING TO 4 AM PST MONDAY ABOVE 4500 FEET... ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 10 PM THIS EVENING TO 4 AM PST MONDAY ABOVE 3500 FEET... ...WINTER STORM WATCH NOW IN EFFECT FROM LATE SUNDAY NIGHT THROUGH TUESDAY MORNING ABOVE 3500 FEET... * WHAT...For the Winter Storm Warning above 4500 feet, heavy wet snow expected. Total snow accumulations 9 to 14 inches expected. Winds gusts 45 to 65 mph are possible above 6500 foot elevations. For the Winter Weather Advisory above 3500 feet, wet snow expected. Total snow accumulations of 4 to 9 inches expected. For the Winter Storm Watch above 3500 feet, heavy snow possible. Total snow accumulations of 10 to 20 inches possible with wind gusts 45 to 65 mph above 6500 foot elevations. * WHERE...The Winter Storm Warning above 4500 feet includes the Mount Shasta Ski Park Road and other rural roads. The Winter Weather Advisory above 3500 feet includes Black Butte Summit on Interstate 5, Highway 89 at Snowmans Summit, and portions of Mount Shasta City above 3500 feet. The Winter Storm watch includes all of the above mentioned areas. * WHEN...For the Winter Storm Warning and Winter Weather Advisory, from 10 PM this evening to 4 AM PST Monday. For the Winter Storm Watch, from late Sunday night through Tuesday morning. * IMPACTS...Travel could be very difficult to impossible in the warning and watch areas. The hazardous conditions could impact commutes Monday and Tuesday. Heavy wet snow could bring down tree branches and damage power lines. * ADDITIONAL DETAILS...Confidence is moderate and increasing that snow impacts will be above 3500 foot elevations. Black Butte on I-5 is still expected to experience some wet snow that could be hazardous to travel. The frontal system is now expected to stall along and near the coast Sunday night into Monday before heading inland Monday into Tuesday resulting in the heaviest precipitation rates during the above mentioned time period. * 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 * See http://quickmap.dot.ca.gov for latest road conditions. && $$ ORZ024-028-311500- /O.EXB.KMFR.WW.Y.0012.210131T0600Z-210201T1200Z/ Eastern Curry County and Josephine County- Siskiyou Mountains and Southern Oregon Cascades- 335 PM PST Sat Jan 30 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 4 AM PST MONDAY ABOVE 4500 FEET... * WHAT...Heavy wet snow expected above 4500 feet. Total snow accumulations of 6 to 12 inches. Winds gusting as high as 55 mph. * WHERE...The Josephine County portion of the Siskiyou Mountains. * WHEN...From 10 PM this evening to 4 AM PST Monday. * IMPACTS...Travel could be difficult for those unprepared for wintry travel tonight into Monday morning in the advisory area. * ADDITIONAL DETAILS...Lesser snow amounts are expected in the Jackson County portion of the Siskiyous, with 2 to 6 inches expected there. 2 inches or less is expected in the Southern Oregon Cascades. * 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. && $$ CAZ080-311500- /O.EXT.KMFR.WW.Y.0012.210131T0600Z-210201T1200Z/ /O.EXT.KMFR.WS.A.0003.210201T1200Z-210202T1800Z/ Western Siskiyou County- 335 PM PST Sat Jan 30 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 10 PM THIS EVENING TO 4 AM PST MONDAY ABOVE 4500 FEET... ...WINTER STORM WATCH NOW IN EFFECT FROM LATE SUNDAY NIGHT THROUGH TUESDAY MORNING ABOVE 4000 FEET... * WHAT...For the Winter Weather Advisory above 4500 feet, wet snow expected. Total snow accumulations of 8 to 16 inches. Winds gusting as high as 45 mph. For the Winter Storm Watch above 4000 feet, heavy wet snow possible. Total snow accumulations of 10 to 20 inches possible. Winds could gust as high as 35 mph. * WHERE...Western Siskiyou County. * WHEN...For the Winter Weather Advisory, from 10 PM this evening to 4 AM PST Monday. For the Winter Storm Watch, from late Sunday night through Tuesday morning. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...Snow is expected to be heavy and wet. If in the backcountry where there is existing significant snowpack, beware of avalanche potential. * View the hazard area in detail at https://www.wrh.noaa.gov/mfr/HAZARD PRECAUTIONARY/PREPAREDNESS ACTIONS... * Slow down and allow extra time to reach your destination. * Carry tire chains and be prepared for snow covered roads and limited visibilities. * See http://quickmap.dot.ca.gov for latest road conditions. * A Winter Weather Advisory for snow means that periods of snow will cause travel difficulties. && $$ BTL Visit us at https://www.weather.gov/Medford
174 WWUS46 KMFR 311016 WSWMFR URGENT - WINTER WEATHER MESSAGE National Weather Service Medford OR 216 AM PST Sun Jan 31 2021 ...Moderate to Heavy Wet Snow Expected Mostly Above 3500 Feet In Siskiyou County Through Tuesday Morning... .Today through early Monday morning, snowfall rates are expected to increase to moderate, at times, across the Mount Shasta area with the snow level likely between 3500 to 4000 feet. Monday through Tuesday morning moderate to heavy precipitation rates are expected with snow level most likely to be in the 3500 to 4500 foot range. While confidence is high in precipitation rates during the mentioned time periods, be advised that snow levels could vary up or down by as much as 500 feet from the current forecast, especially Monday into Tuesday. Please check future forecast for updates. CAZ082-083-312130- /O.CON.KMFR.WS.W.0003.000000T0000Z-210201T1200Z/ /O.CON.KMFR.WW.Y.0012.000000T0000Z-210201T1200Z/ /O.CON.KMFR.WS.A.0003.210201T1200Z-210202T1800Z/ South Central Siskiyou County- North Central and Southeast Siskiyou County- Including the city of Tennant 216 AM PST Sun Jan 31 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST MONDAY ABOVE 4500 FEET... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST MONDAY ABOVE 3500 FEET... ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING ABOVE 3500 FEET... * WHAT...For the Winter Storm Warning above 4500 feet, heavy wet snow expected. Total snow accumulations 9 to 14 inches expected. Winds gusts 45 to 65 mph are possible above 6500 foot elevations. For the Winter Weather Advisory above 3500 feet, wet snow expected. Total snow accumulations of 4 to 9 inches expected. For the Winter Storm Watch above 3500 feet, heavy snow possible. Total snow accumulations of 10 to 20 inches possible with wind gusts 45 to 65 mph above 6500 foot elevations. * WHERE...The Winter Storm Warning above 4500 feet includes the Mount Shasta Ski Park Road and other rural roads. The Winter Weather Advisory above 3500 feet includes Black Butte Summit on Interstate 5, Highway 89 at Snowmans Summit, and portions of Mount Shasta City above 3500 feet. The Winter Storm watch includes all of the above mentioned areas. * WHEN...For the Winter Storm Warning and Winter Weather Advisory, from 10 PM this evening to 4 AM PST Monday. For the Winter Storm Watch, from late Sunday night through Tuesday morning. * IMPACTS...Travel could be very difficult to impossible in the warning and watch areas. The hazardous conditions could impact commutes Monday and Tuesday. Heavy wet snow could bring down tree branches and damage power lines. * ADDITIONAL DETAILS...Confidence is moderate that snow impacts will be above 3500 foot elevations. Black Butte on I- 5 is still expected to experience some wet snow that could be hazardous to travel. The frontal system is now expected to stall along and near the coast Sunday night into Monday before heading inland Monday into Tuesday resulting in the heaviest precipitation rates during the above mentioned time period. * 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 * See http://quickmap.dot.ca.gov for latest road conditions. && $$ CAZ080-312130- /O.CON.KMFR.WW.Y.0012.000000T0000Z-210201T1200Z/ /O.CON.KMFR.WS.A.0003.210201T1200Z-210202T1800Z/ Western Siskiyou County- 216 AM PST Sun Jan 31 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST MONDAY ABOVE 4500 FEET... ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING ABOVE 4000 FEET... * WHAT...For the Winter Weather Advisory above 4500 feet, wet snow expected. Total snow accumulations of 8 to 16 inches. Winds gusting as high as 45 mph. For the Winter Storm Watch above 4000 feet, heavy wet snow possible. Total snow accumulations of 10 to 20 inches possible. Winds could gust as high as 35 mph. * WHERE...Western Siskiyou County. The winter weather advisory includes areas above 4500 feet elevation. The winter storm watch includes areas above 4000 feet elevation. * WHEN...For the Winter Weather Advisory, from 10 PM this evening to 4 AM PST Monday. For the Winter Storm Watch, from late Sunday night through Tuesday morning. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...Snow is expected to be heavy and wet. Snow levels may rise to 5000 to 5500 feet at times late today then lower to 4000 to 5000 feet Monday into Monday night. If in the backcountry where there is existing significant snowpack, beware of avalanche potential. * View the hazard area in detail at https://www.wrh.noaa.gov/mfr/HAZARD PRECAUTIONARY/PREPAREDNESS ACTIONS... * Slow down and allow extra time to reach your destination. * Carry tire chains and be prepared for snow covered roads and limited visibilities. * See http://quickmap.dot.ca.gov for latest road conditions. * A Winter Weather Advisory for snow means that periods of snow will cause travel difficulties. && $$ ORZ024-028-312130- /O.CON.KMFR.WW.Y.0012.000000T0000Z-210201T1200Z/ Eastern Curry County and Josephine County- Siskiyou Mountains and Southern Oregon Cascades- 216 AM PST Sun Jan 31 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST MONDAY ABOVE 4500 FEET... * WHAT...Heavy wet snow expected above 4500 feet. Total snow accumulations of 6 to 12 inches. Winds gusting as high as 55 mph. * WHERE...Siskiyou mountains in Josephine County. * WHEN...From 10 PM this evening to 4 AM PST Monday. * IMPACTS...Travel could be difficult for those unprepared for wintry travel tonight into Monday morning in the advisory area. * ADDITIONAL DETAILS...Snow levels will increase from 4500 feet this morning to 5500 feet this evening through Monday morning. For areas to the east, lesser snow amounts are expected in the Jackson County portion of the Siskiyous, with 2 to 7 inches expected there. 2 inches or less is expected in the Southern Oregon Cascades. * 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
502 WWUS46 KMFR 312246 WSWMFR URGENT - WINTER WEATHER MESSAGE National Weather Service Medford OR 246 PM PST Sun Jan 31 2021 ...Moderate to Heavy Wet Snow Expected Late Monday Morning through Tuesday Morning... .Snow levels have risen to about 4,000 to 5,000 foot elevations this afternoon. Precipitation this afternoon is lifting westward more toward the coast, so the current round of snowfall in the mountains will taper off. Late Monday morning into the afternoon a strong and wet frontal system along and near the coast will move inland with high precipitation rates and snow levels falling into the 3,000 to 4,000 foot range. A period of heavy, wet snowfall is expected across the area, likely resulting in impacts on area roadways, especially during the Monday afternoon and evening commute. CAZ082-083-011500- /O.CAN.KMFR.WS.W.0003.000000T0000Z-210201T1200Z/ /O.CAN.KMFR.WW.Y.0012.000000T0000Z-210201T1200Z/ /O.UPG.KMFR.WS.A.0003.210201T1200Z-210202T1800Z/ /O.NEW.KMFR.WW.Y.0013.210201T1800Z-210202T1800Z/ /O.NEW.KMFR.WS.W.0004.210201T1800Z-210202T1800Z/ South Central Siskiyou County- North Central and Southeast Siskiyou County- Including the cities of Mount Shasta and Tennant 246 PM PST Sun Jan 31 2021 ...WINTER STORM WARNING IN EFFECT FROM 10 AM MONDAY TO 10 AM PST TUESDAY ABOVE 3500 FEET... ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 AM MONDAY TO 10 AM PST TUESDAY ABOVE 3000 FEET... * WHAT...For the Winter Storm Warning above 3500 feet, heavy snow expected. Total snow accumulations of 10 to 20 inches expected. Wind gusts 40 to 60 mph expected above 6500 foot elevations. mph. For the Winter Weather Advisory above 3000 feet, heavy, wet snow expected. Total snow accumulations of 4 to 9 inches. * WHERE...The Winter Storm Warning, areas in and above Mount Shasta City to include Highway 89 between Mount Shasta City and McCloud as well as the Mount Shasta Ski Park Road. Black Butte Summit on Interstate 5 is also in the warning area. For the Winter Weather Advisory, Interstate 5 near Mount Shasta City to between Mount Shasta City and Dunsmuir. * WHEN...From 10 AM Monday to 10 AM PST Tuesday. * IMPACTS...Travel could be very difficult to impossible during the height of the storm late Monday afternoon in Monday evening. The hazardous conditions are expected to impact the Monday evening commute. Heavy wet snow could damage trees and powerlines. * ADDITIONAL DETAILS...Snow levels generally above 4,000 feet Monday are expected to rapidly lower during heavy precipitation Monday afternoon into the evening. The heaviest precipitation is currently expected to occur between between 1 PM and 7PM PST. * 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. && $$ CAZ080-011500- /O.UPG.KMFR.WS.A.0003.210201T1200Z-210202T1800Z/ /O.NEW.KMFR.WS.W.0004.210201T1800Z-210202T1800Z/ /O.EXT.KMFR.WW.Y.0012.000000T0000Z-210201T0000Z/ Western Siskiyou County- 246 PM PST Sun Jan 31 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 4 PM PST THIS AFTERNOON ABOVE 4500 FEET... ...WINTER STORM WARNING IN EFFECT FROM 10 AM MONDAY TO 10 AM PST TUESDAY ABOVE 4000 FEET... * WHAT...For the Winter Weather Advisory above 4500 feet, wet snow. Additional snow accumulations of up to 2 inches expected with winds gusting as high as 45 mph. For the Winter Storm Warning above 4000 feet, heavy snow expected. Total snow accumulations of 8 to 18 inches with winds gusting as high as 50 mph. * WHERE...Western Siskiyou County. * WHEN...For the Winter Weather Advisory, until 4 PM PST this afternoon. For the Winter Storm Warning, from 10 AM Monday to 10 AM PST Tuesday. * IMPACTS...Travel could be very difficult to impossible during the warning period. The hazardous conditions could impact the Monday evening commute. Heavy, wet snow could damage tree branches and powerlines. * 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. && $$ ORZ028-011500- /O.NEW.KMFR.WW.Y.0013.210201T2100Z-210202T0600Z/ /O.EXT.KMFR.WW.Y.0012.000000T0000Z-210201T0000Z/ Siskiyou Mountains and Southern Oregon Cascades- 246 PM PST Sun Jan 31 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 4 PM PST THIS AFTERNOON ABOVE 4500 FEET... ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM TO 10 PM PST MONDAY ABOVE 4500 FEET... * WHAT...For the first Winter Weather Advisory above 4500 feet, wet snow. Additional snow accumulations of up to 2 inch es and winds gusting as high as 40 mph. For the second Winter Weather Advisory above 4500 feet, snow expected. Additional snow accumulations of 6 to 14 inches. Winds gusting as high as 50 mph. * WHERE...The Siskiyou Mountains, including Mount Ashland Ski Area and Ski Road. * WHEN...For the first Winter Weather Advisory, until 4 PM PST this afternoon. For the second Winter Weather Advisory, from 1 PM to 10 PM PST Monday. * IMPACTS...Plan on slippery road conditions. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...In addition to the windy conditions and snowfall expected above 4500 feet, there is likely to be a period of 3 to 6 hours later Monday afternoon into the evening with half an inch to inch per hour snow rates with snow levels lowering into the 3500 to 4000 foot range on Interstate 5 at Siskiyou Summit. * View the hazard area in detail at https://www.wrh.noaa.gov/mfr/HAZARD PRECAUTIONARY/PREPAREDNESS ACTIONS... * Slow down and allow extra time to reach your destination. * Carry tire chains and be prepared for snow covered roads and limited visibilities. * See https://www.tripcheck.com or http://quickmap.dot.ca.gov for latest road conditions. * A Winter Weather Advisory for snow means that periods of snow will cause travel difficulties. && $$ ORZ024-010000- /O.EXT.KMFR.WW.Y.0012.000000T0000Z-210201T0000Z/ Eastern Curry County and Josephine County- 246 PM PST Sun Jan 31 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 4 PM PST THIS AFTERNOON ABOVE 4500 FEET... * WHAT...Wet snow above 4500 feet. Additional snow accumulations of up to two inches . Winds gusting as high as 40 mph. * WHERE...The Oregon Caves area of the Siskiyous in southeastern Josephine County. * WHEN...Until 4 PM PST this afternoon. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Snow levels will rise this evening as precipitation focuses west of the area. * 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. && $$ BTL Visit us at https://www.weather.gov/Medford
The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 29, 2:43 AM PST | High Wind Watch | MFR | Siskiyou | 37 hr |
| Jan 29, 2:13 PM PST | High Wind Watch | MFR | Modoc | 49 hr |
| Jan 29, 2:13 PM PST | Wind Advisory | MFR | Modoc, Siskiyou | 3 days |
| Jan 29, 3:11 PM PST | Winter Storm Watch | MFR | Siskiyou | 48 hr |
| Jan 29, 3:11 PM PST | Winter Weather Advisory | MFR | Siskiyou | 49 hr |
Nearby
Winter Storm Warnings in California, 2021Every winter storm warning in 2021
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.