Alert archive / California / Winter Storm Warnings in 2021
Winter Storm Warning 10, NWS Medford, OR
NWS Medford, OR issued this winter storm warning at Nov 7, 2021, 2:01 AM PST for Siskiyou County, California. It took effect at Nov 8, 2021, 4:00 PM PST. It was in force for 15 hr. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Nov 7, 2021, 2:01 AM PST (10:01 UTC)
- In effect from
- Nov 8, 2021, 4:00 PM PST
- Expired
- Nov 9, 2021, 7:00 AM PST
- In force
- 15 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 10:03 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Nov 9, 1:00 AM PST | HEAVY SNOW 1 | Mount Shasta, CA | 4 HOUR ACCUMULATION SINCE 9 PM PST. STATION ELEVATION: 3700 FT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Medford/Jackson, OR (KMFR), launched 00:00Z, 10.0 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1423 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 117 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
304 WWUS46 KMFR 071001 WSWMFR URGENT - WINTER WEATHER MESSAGE National Weather Service Medford OR 201 AM PST Sun Nov 7 2021 CAZ080-082-083-080015- /O.UPG.KMFR.WS.A.0007.211109T0000Z-211109T1500Z/ /O.NEW.KMFR.WW.Y.0031.211109T0000Z-211109T1500Z/ /O.NEW.KMFR.WS.W.0010.211109T0000Z-211109T1500Z/ Western Siskiyou County-South Central Siskiyou County- North Central and Southeast Siskiyou County- Including the cities of Mount Shasta, Pondosa, and Tennant 201 AM PST Sun Nov 7 2021 ...WINTER STORM WARNING IN EFFECT FROM 4 PM MONDAY TO 7 AM PST TUESDAY ABOVE 4000 FEET... ...WINTER WEATHER ADVISORY IN EFFECT FROM 4 PM MONDAY TO 7 AM PST TUESDAY ABOVE 3500 FEET... * WHAT...For the Winter Storm Warning above 4000 feet, heavy wet snow expected. Total snow accumulations of 4 to 8 inches with 12 inches possible above 6000 feet. Winds gusting as high as 60 mph. For the Winter Weather Advisory above 3500 feet, wet snow expected. Total snow accumulations of 2 to 5 inches. Winds gusting as high as 50 mph. * WHERE...Portions of southern Siskiyou County. For the Winter Storm Warning, Highway 89 east of Mount Shasta City and west of the McCloud, including Snowman Summit as well as Ski Park Highway. Also Highway 89 near Pondosa, Highway 3 south of Callahan, Scott Mountain Summit, and Etna Summit on Sawyers Bar Road. For the Winter Weather Advisory, Tennant, and areas along Interstate 5 from just south of Weed to Mt Shasta City, including Black Butte Summit. * WHEN...From 4 PM Monday to 7 AM PST Tuesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday evening and Tuesday morning commutes. Strong winds and/or heavy wet snow could cause tree damage. Significant visibility reductions are likely. * ADDITIONAL DETAILS...The period of heaviest precipitation is likely from 7 PM PST until 1 AM PST. Most of the heaviest snow will occur above 4000 feet, but could be down as low as 3500 feet at times during this period of heavier precipitation. Snow levels will gradually rise overnight Monday into Tuesday morning. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... * Travel is strongly discouraged because of dangerous conditions. * If you must travel, keep tire chains, a flashlight, blankets, food, water, medications, and a fully charged phone with you. * The safest place during a winter storm is indoors. * A Winter Storm Warning means that severe winter weather is imminent and poses a threat to life and property. Take protective action now. && $$ Visit us at https://www.weather.gov/Medford
6 follow-up statements
839 WWUS46 KMFR 072159 WSWMFR URGENT - WINTER WEATHER MESSAGE National Weather Service Medford OR 159 PM PST Sun Nov 7 2021 CAZ082-081000- /O.CAN.KMFR.WW.Y.0031.211109T0000Z-211109T1500Z/ /O.CON.KMFR.WS.W.0010.211109T0000Z-211109T1500Z/ South Central Siskiyou County- Including the city of Mount Shasta 159 PM PST Sun Nov 7 2021 ...WINTER STORM WARNING IS NOW IN EFFECT FROM 4 PM MONDAY TO 7 AM PST TUESDAY ABOVE 3500 FEET... * WHAT...For the Winter Storm Warning above 3500 feet, heavy wet snow expected. Total snow accumulations of 5 to 8 inches with 12 inches possible above 6000 feet. Winds gusting as high as 60 mph over high exposed terrain. * WHERE...South Central Siskiyou County including Highway 89 east of Mount Shasta City and west of McCloud, including Snowman Summit, Dead Horse Summit. Interstate 5 around Black Butte Summit and the Mt. Shasta City area. * WHEN...From 4 PM Monday to 7 AM PST Tuesday. * IMPACTS...Travel could be very difficult. High snowfall rates could impact the Monday evening and Tuesday morning commutes. Strong winds and heavy wet snow could cause tree damage. Visibility reductions because of blowing snow are likely between Weed and Mt. Shasta City. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... * If you must travel, keep tire chains, a flashlight, blankets, food, water, medications, and a fully charged phone with you. * The safest place during a winter storm is indoors. * A Winter Storm Warning means that severe winter weather is likely and poses a threat to life and property. Take protective action now. && $$ CAZ080-081000- /O.CON.KMFR.WS.W.0010.211109T0000Z-211109T1500Z/ /O.CON.KMFR.WW.Y.0031.211109T0000Z-211109T1500Z/ Western Siskiyou County- 159 PM PST Sun Nov 7 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM MONDAY TO 7 AM PST TUESDAY ABOVE 4000 FEET... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM MONDAY TO 7 AM PST TUESDAY ABOVE 3500 FEET... * WHAT...Heavy wet snow. Total snow accumulations of 4 to 8 inches with 12 inches possible above 6000 feet. Winds gusting as high as 60 mph over high exposed terrain. * WHERE...Portions of the Marble and Trinity mountains including Highway 3 south of Callahan, Scott Mountain Summit, and Etna Summit on Sawyers Bar Road. * WHEN...From 4 PM Monday to 7 AM PST Tuesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday evening and Tuesday morning commutes. Strong winds and heavy wet snow could cause tree damage, especially within burn scars where trees are already damaged. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... * 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. && $$ CAZ083-081000- /O.CON.KMFR.WS.W.0010.211109T0000Z-211109T1500Z/ /O.CON.KMFR.WW.Y.0031.211109T0000Z-211109T1500Z/ North Central and Southeast Siskiyou County- Including the cities of Pondosa and Tennant 159 PM PST Sun Nov 7 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM MONDAY TO 7 AM PST TUESDAY ABOVE 5000 FEET... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM MONDAY TO 7 AM PST TUESDAY BELOW 5000 FEET... * WHAT...Heavy wet snow expected. Total snow accumulations of 4 to 8 inches with 12 inches possible above 6000 feet. Winds gusting as high as 60 mph over high exposed terrain. * WHERE...For the Winter Storm Warning, areas above 5000 feet in south eastern Siskiyou County. For the Winter Weather Advisory, areas in south eastern Siskiyou County below 5000 feet including Tennant. * WHEN...From 4 PM Monday to 7 AM PST Tuesday. * IMPACTS...Strong winds and heavy wet snow could cause tree damage. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... * If you must travel, keep tire chains, a flashlight, blankets, food, water, medications, and a fully charged phone with you. * The safest place during a winter storm is indoors. * A Winter Storm Warning means that severe winter weather is likely and poses a threat to life and property. Take protective action now. && $$ Visit us at https://www.weather.gov/Medford
658 WWUS46 KMFR 080958 WSWMFR URGENT - WINTER WEATHER MESSAGE National Weather Service Medford OR 158 AM PST Mon Nov 8 2021 CAZ080-090000- /O.CAN.KMFR.WW.Y.0031.211109T0000Z-211109T1500Z/ /O.CON.KMFR.WS.W.0010.211109T0000Z-211109T1500Z/ Western Siskiyou County- 158 AM PST Mon Nov 8 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 7 AM PST TUESDAY ABOVE 4500 FEET... ...WINTER WEATHER ADVISORY IS CANCELLED... * WHAT...Heavy wet snow. Total snow accumulations of 4 to 8 inches with 12 inches possible above 6000 feet. Winds gusting as high as 60 mph over high exposed terrain. * WHERE...In Western Siskiyou County, the Marble and Trinity mountains, including Highway 3 south of Callahan and Scott Mountain Summit. * WHEN...From 4 PM this afternoon to 7 AM PST Tuesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the commutes this evening and Tuesday morning. Strong winds and heavy wet snow could cause tree damage, especially within burn scars where trees are already damaged. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... * Travel is strongly discouraged because of dangerous conditions. * If you must travel, keep tire chains, a flashlight, blankets, food, water, medications, and a fully charged phone with you. * The safest place during a winter storm is indoors. * A Winter Storm Warning means that severe winter weather is imminent and poses a threat to life and property. Take protective action now. && $$ CAZ083-090000- /O.CON.KMFR.WS.W.0010.211109T0000Z-211109T1500Z/ /O.CON.KMFR.WW.Y.0031.211109T0000Z-211109T1500Z/ North Central and Southeast Siskiyou County- Including the cities of Pondosa and Tennant 158 AM PST Mon Nov 8 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 7 AM PST TUESDAY ABOVE 5000 FEET... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 7 AM PST TUESDAY ABOVE 3500 FEET... * WHAT...Heavy wet snow expected. Total snow accumulations of 2 to 5 inches down to around 3500 feet with 4 to 8 inches above 5000 feet. Up to 12 inches of snow is possible above 6000 feet. Winds gusting as high as 60 mph over high exposed terrain. * WHERE...For the Winter Storm Warning, areas above 5000 feet in south eastern Siskiyou County. For the Winter Weather Advisory, areas in south eastern Siskiyou County below 5000 feet including Tennant. * WHEN...From 4 PM this afternoon to 7 AM PST Tuesday. * IMPACTS...Strong winds and heavy wet snow could cause tree damage. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... * If you must travel, keep tire chains, a flashlight, blankets, food, water, medications, and a fully charged phone with you. * The safest place during a winter storm is indoors. * A Winter Storm Warning means that severe winter weather is imminent and poses a threat to life and property. Take protective action now. && $$ CAZ082-090000- /O.CON.KMFR.WS.W.0010.211109T0000Z-211109T1500Z/ South Central Siskiyou County- Including the city of Mount Shasta 158 AM PST Mon Nov 8 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 7 AM PST TUESDAY ABOVE 3500 FEET... * WHAT...Heavy wet snow expected. Total snow accumulations of 4 to 8 inches, but locally 12 inches possible above 5000 feet. Winds gusting as high as 60 mph over high exposed terrain. * WHERE...In South Central Siskiyou County, Interstate 5 around Black Butte Summit and the Mt. Shasta City area. Also Highway 89 east of Mount Shasta City and west of McCloud, including Snowman Summit, but also Dead Horse Summit near the Shasta County border. * WHEN...From 4 PM this afternoon to 7 AM PST Tuesday. * IMPACTS...Travel could be very difficult. High snowfall rates could impact the commutes this evening and Tuesday morning. Strong winds and heavy wet snow could cause tree damage. Visibility reductions because of blowing snow are likely between Weed and Mt. Shasta City. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... * 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. && $$ Visit us at https://www.weather.gov/Medford
641 WWUS46 KMFR 082213 WSWMFR URGENT - WINTER WEATHER MESSAGE National Weather Service Medford OR 213 PM PST Mon Nov 8 2021 CAZ083-091200- /O.CON.KMFR.WS.W.0010.211109T0000Z-211109T1500Z/ /O.CON.KMFR.WW.Y.0031.211109T0000Z-211109T1500Z/ North Central and Southeast Siskiyou County- Including the cities of Pondosa and Tennant 213 PM PST Mon Nov 8 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY ABOVE 5000 FEET... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY ABOVE 3500 FEET... * WHAT...Heavy wet snow expected. Total snow accumulations of 2 to 5 inches down to around 3500 feet with 4 to 8 inches above 5000 feet. Up to 12 inches of snow is possible above 6000 feet. Winds gusting as high as 60 mph over high exposed terrain. * WHERE...For the Winter Storm Warning, areas above 5000 feet in south eastern Siskiyou County. For the Winter Weather Advisory, areas in south eastern Siskiyou County below 5000 feet including Tennant. * WHEN...From 4 PM Monday until 7 AM PST Tuesday. * IMPACTS...Strong winds and heavy wet snow could cause tree damage. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... * If you must travel, keep tire chains, a flashlight, blankets, food, water, medications, and a fully charged phone with you. * The safest place during a winter storm is indoors. * A Winter Storm Warning means that severe winter weather is imminent and poses a threat to life and property. Take protective action now. && $$ CAZ082-091200- /O.CON.KMFR.WS.W.0010.211109T0000Z-211109T1500Z/ South Central Siskiyou County- Including the city of Mount Shasta 213 PM PST Mon Nov 8 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY ABOVE 3500 FEET... * WHAT...Heavy wet snow expected. Total snow accumulations of 4 to 6 inches, but locally 10 inches possible above 5000 feet. Winds gusting as high as 60 mph over high exposed terrain. * WHERE...In South Central Siskiyou County, Interstate 5 around Black Butte Summit and the Mt. Shasta City area. Also Highway 89 east of Mount Shasta City and west of McCloud, including Snowman Summit, but also Dead Horse Summit near the Shasta County border. * WHEN...From 4 PM Monday until 7 AM PST Tuesday. * IMPACTS...Travel could be very difficult. High snowfall rates could impact the commutes Monday evening and Tuesday morning. Strong winds and heavy wet snow could cause tree damage. Visibility reductions because of blowing snow are likely between Weed and Mt. Shasta City. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... * If you must travel, keep tire chains, a flashlight, blankets, food, water, medications, and a fully charged phone with you. * The safest place during a winter storm is indoors. * A Winter Storm Warning means that severe winter weather is imminent and poses a threat to life and property. Take protective action now. && $$ CAZ080-091200- /O.CON.KMFR.WS.W.0010.211109T0000Z-211109T1500Z/ Western Siskiyou County- 213 PM PST Mon Nov 8 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY ABOVE 4500 FEET... * WHAT...Heavy wet snow. Total snow accumulations of 4 to 8 inches with 12 inches possible above 6000 feet. Winds gusting as high as 60 mph over high exposed terrain. * WHERE...In Western Siskiyou County, the Marble and Trinity mountains, including Highway 3 south of Callahan and Scott Mountain Summit. * WHEN...From 4 PM Monday until 7 AM PST Tuesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the commutes Monday evening and Tuesday morning. Strong winds and heavy wet snow could cause tree damage, especially within burn scars where trees are already damaged. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... * If you must travel, keep tire chains, a flashlight, blankets, food, water, medications, and a fully charged phone with you. * The safest place during a winter storm is indoors. * A Winter Storm Warning means that severe winter weather is imminent and poses a threat to life and property. Take protective action now. && $$ Visit us at https://www.weather.gov/Medford
807 WWUS46 KMFR 090905 WSWMFR URGENT - WINTER WEATHER MESSAGE National Weather Service Medford OR 105 AM PST Tue Nov 9 2021 CAZ083-091500- /O.CON.KMFR.WS.W.0010.000000T0000Z-211109T1500Z/ /O.CON.KMFR.WW.Y.0031.000000T0000Z-211109T1500Z/ North Central and Southeast Siskiyou County- Including the cities of Pondosa and Tennant 105 AM PST Tue Nov 9 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY ABOVE 5000 FEET... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY ABOVE 3500 FEET... * WHAT...Heavy wet snow expected. Total snow accumulations of 2 to 5 inches down to around 3500 feet with 4 to 8 inches above 5000 feet. Up to 12 inches of snow is possible above 6000 feet. Winds gusting as high as 60 mph over high exposed terrain. * WHERE...For the Winter Storm Warning, areas above 5000 feet in south eastern Siskiyou County. For the Winter Weather Advisory, areas in south eastern Siskiyou County below 5000 feet including Tennant. * WHEN...From 4 PM Monday until 7 AM PST Tuesday. * IMPACTS...Strong winds and heavy wet snow could cause tree damage. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... * If you must travel, keep tire chains, a flashlight, blankets, food, water, medications, and a fully charged phone with you. * The safest place during a winter storm is indoors. * A Winter Storm Warning means that severe winter weather is imminent and poses a threat to life and property. Take protective action now. && $$ CAZ082-091500- /O.CON.KMFR.WS.W.0010.000000T0000Z-211109T1500Z/ South Central Siskiyou County- Including the city of Mount Shasta 105 AM PST Tue Nov 9 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY ABOVE 3500 FEET... * WHAT...Heavy wet snow expected. Total snow accumulations of 4 to 6 inches, but locally 10 inches possible above 5000 feet. Winds gusting as high as 60 mph over high exposed terrain. * WHERE...In South Central Siskiyou County, Interstate 5 around Black Butte Summit and the Mt. Shasta City area. Also Highway 89 east of Mount Shasta City and west of McCloud, including Snowman Summit, but also Dead Horse Summit near the Shasta County border. * WHEN...From 4 PM Monday until 7 AM PST Tuesday. * IMPACTS...Travel could be very difficult. High snowfall rates could impact the commutes Monday evening and Tuesday morning. Strong winds and heavy wet snow could cause tree damage. Visibility reductions because of blowing snow are likely between Weed and Mt. Shasta City. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... * If you must travel, keep tire chains, a flashlight, blankets, food, water, medications, and a fully charged phone with you. * The safest place during a winter storm is indoors. * A Winter Storm Warning means that severe winter weather is imminent and poses a threat to life and property. Take protective action now. && $$ CAZ080-091500- /O.CON.KMFR.WS.W.0010.000000T0000Z-211109T1500Z/ Western Siskiyou County- 105 AM PST Tue Nov 9 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY ABOVE 4500 FEET... * WHAT...Heavy wet snow. Total snow accumulations of 4 to 8 inches with 12 inches possible above 6000 feet. Winds gusting as high as 60 mph over high exposed terrain. * WHERE...In Western Siskiyou County, the Marble and Trinity mountains, including Highway 3 south of Callahan and Scott Mountain Summit. * WHEN...From 4 PM Monday until 7 AM PST Tuesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the commutes Monday evening and Tuesday morning. Strong winds and heavy wet snow could cause tree damage, especially within burn scars where trees are already damaged. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... * If you must travel, keep tire chains, a flashlight, blankets, food, water, medications, and a fully charged phone with you. * The safest place during a winter storm is indoors. * A Winter Storm Warning means that severe winter weather is imminent and poses a threat to life and property. Take protective action now. && $$ ORZ030-091200- /O.EXB.KMFR.WW.Y.0031.000000T0000Z-211109T1200Z/ Northern and Eastern Klamath County and Western Lake County- Including the city of Chemult 105 AM PST Tue Nov 9 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 4 AM PST EARLY THIS MORNING ABOVE 4500 FEET... * WHAT...Wet snow above 4500 feet. Total snow accumulations of 2 to 4 inches. Wind gusts 30 to as high as 50 mph. * WHERE...Primarily between Sand Creek and Crescent along Highway 97, especially near Chemult and the Highway 138 / Highway 97 Junction. Also, higher elevations of Northern and Eastern Klamath County and Western Lake County. * WHEN...Until 4 AM PST early this morning. * IMPACTS...Plan on slippery road conditions. Gusty winds combined with the snow will lead to poor visibilities and accumulating snow on roadways, at times. Tree branches could also fall. * ADDITIONAL DETAILS...Snow levels are expected to rise slightly as precipitation rates become lighter this morning. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... * Slow down and allow extra time to reach your destination. * Carry tire chains and be prepared for snow covered roads and limited visibilities. * See https://www.tripcheck.com for latest road conditions. * A Winter Weather Advisory for snow means that periods of snow will cause travel difficulties. && $$ BTL Visit us at https://www.weather.gov/Medford
038 WWUS46 KMFR 091200 WSWMFR URGENT - WINTER WEATHER MESSAGE National Weather Service Medford OR 400 AM PST Tue Nov 9 2021 CAZ083-091500- /O.CON.KMFR.WS.W.0010.000000T0000Z-211109T1500Z/ /O.CON.KMFR.WW.Y.0031.000000T0000Z-211109T1500Z/ North Central and Southeast Siskiyou County- Including the cities of Pondosa and Tennant 400 AM PST Tue Nov 9 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 AM PST THIS MORNING ABOVE 5000 FEET... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST THIS MORNING ABOVE 3500 FEET... * WHAT...Heavy wet snow expected. Total snow accumulations of 2 to 5 inches down to around 3500 feet with 4 to 8 inches above 5000 feet. Up to 12 inches of snow is possible above 6000 feet. Winds gusting as high as 60 mph over high exposed terrain. * WHERE...For the Winter Storm Warning, areas above 5000 feet in south eastern Siskiyou County. For the Winter Weather Advisory, areas in south eastern Siskiyou County below 5000 feet including Tennant. * WHEN...Until 7 AM PST Tuesday. * IMPACTS...Strong winds and heavy wet snow could cause tree damage. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... * If you must travel, keep tire chains, a flashlight, blankets, food, water, medications, and a fully charged phone with you. * The safest place during a winter storm is indoors. * A Winter Storm Warning means that severe winter weather is imminent and poses a threat to life and property. Take protective action now. && $$ CAZ082-091500- /O.CON.KMFR.WS.W.0010.000000T0000Z-211109T1500Z/ South Central Siskiyou County- 400 AM PST Tue Nov 9 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 AM PST THIS MORNING ABOVE 4000 FEET... * WHAT...Heavy wet snow expected. Total snow accumulations of 4 to 6 inches, but locally 10 inches possible above 5000 feet. Winds gusting as high as 60 mph over high exposed terrain. * WHERE...In South Central Siskiyou County, Interstate 5 around Black Butte Summit. Also Highway 89 east of Mount Shasta City and west of McCloud, including Snowman Summit, but also Dead Horse Summit near the Shasta County border. * WHEN...Until 7 AM PST Tuesday. * IMPACTS...Travel could be very difficult. High snowfall rates could impact the commutes Monday evening and Tuesday morning. Strong winds and heavy wet snow could cause tree damage. Visibility reductions because of blowing snow are likely between Weed and Mt. Shasta City. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... * If you must travel, keep tire chains, a flashlight, blankets, food, water, medications, and a fully charged phone with you. * The safest place during a winter storm is indoors. * A Winter Storm Warning means that severe winter weather is imminent and poses a threat to life and property. Take protective action now. && $$ CAZ080-091500- /O.CON.KMFR.WS.W.0010.000000T0000Z-211109T1500Z/ Western Siskiyou County- 400 AM PST Tue Nov 9 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 AM PST THIS MORNING ABOVE 4500 FEET... * WHAT...Heavy wet snow. Total snow accumulations of 4 to 8 inches with 12 inches possible above 6000 feet. Winds gusting as high as 60 mph over high exposed terrain. * WHERE...In Western Siskiyou County, the Marble and Trinity mountains, including Highway 3 south of Callahan and Scott Mountain Summit. * WHEN...Until 7 AM PST Tuesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the commutes Monday evening and Tuesday morning. Strong winds and heavy wet snow could cause tree damage, especially within burn scars where trees are already damaged. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... * If you must travel, keep tire chains, a flashlight, blankets, food, water, medications, and a fully charged phone with you. * The safest place during a winter storm is indoors. * A Winter Storm Warning means that severe winter weather is imminent and poses a threat to life and property. Take protective action now. && $$ ORZ030-091500- /O.EXT.KMFR.WW.Y.0031.000000T0000Z-211109T1500Z/ Northern and Eastern Klamath County and Western Lake County- Including the city of Chemult 400 AM PST Tue Nov 9 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 7 AM PST THIS MORNING ABOVE 4500 FEET... * WHAT...Wet snow above 4500 feet. Total snow accumulations of 2 to 4 inches. Wind gusts 30 to as high as 50 mph. * WHERE...Primarily between Sand Creek and Crescent along Highway 97, especially near Chemult and the Highway 138 / Highway 97 Junction. Also, higher elevations of Northern and Eastern Klamath County and Western Lake County. * WHEN...Until 7 AM PST this morning. * IMPACTS...Plan on slippery road conditions. Gusty winds combined with the snow will lead to poor visibilities and accumulating snow on roadways, at times. Tree branches could also fall. * ADDITIONAL DETAILS...Snow levels are expected to rise slightly as precipitation rates become lighter this morning. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... * Slow down and allow extra time to reach your destination. * Carry tire chains and be prepared for snow covered roads and limited visibilities. * See https://www.tripcheck.com for latest road conditions. * A Winter Weather Advisory for snow means that periods of snow will cause travel difficulties. && $$ BTL Visit us at https://www.weather.gov/Medford
922 WWUS46 KMFR 091455 WSWMFR URGENT - WINTER WEATHER MESSAGE National Weather Service Medford OR 655 AM PST Tue Nov 9 2021 CAZ083-091600- /O.EXP.KMFR.WS.W.0010.000000T0000Z-211109T1500Z/ /O.EXP.KMFR.WW.Y.0031.000000T0000Z-211109T1500Z/ North Central and Southeast Siskiyou County- Including the cities of Pondosa and Tennant 655 AM PST Tue Nov 9 2021 ...WINTER STORM WARNING WILL EXPIRE AT 7 AM PST THIS MORNING ABOVE 5000 FEET... ...WINTER WEATHER ADVISORY WILL EXPIRE AT 7 AM PST THIS MORNING ABOVE 3500 FEET... Light snow showers are expected across the mountains today, but additional accumulations are likely to be under one inch. $$ CAZ082-091600- /O.EXP.KMFR.WS.W.0010.000000T0000Z-211109T1500Z/ South Central Siskiyou County- 655 AM PST Tue Nov 9 2021 ...WINTER STORM WARNING WILL EXPIRE AT 7 AM PST THIS MORNING ABOVE 4000 FEET... Light snow showers are expected across the mountains today, but additional accumulations are likely to be under one inch. $$ CAZ080-091600- /O.EXP.KMFR.WS.W.0010.000000T0000Z-211109T1500Z/ Western Siskiyou County- 655 AM PST Tue Nov 9 2021 ...WINTER STORM WARNING WILL EXPIRE AT 7 AM PST THIS MORNING ABOVE 4500 FEET... Light snow showers are expected across the mountains today, but additional accumulations are likely to be under one inch. $$ ORZ030-091600- /O.EXP.KMFR.WW.Y.0031.000000T0000Z-211109T1500Z/ Northern and Eastern Klamath County and Western Lake County- Including the city of Chemult 655 AM PST Tue Nov 9 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 7 AM PST THIS MORNING ABOVE 4500 FEET... Light snow showers are expected across the mountains today, but additional accumulations are likely to be under one inch. $$ 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 |
|---|---|---|---|---|
| Nov 7, 1:36 AM PST | High Wind Warning | MFR | Modoc, Siskiyou | 53 hr |
| Nov 7, 1:36 AM PST | Wind Advisory | MFR | Modoc, Siskiyou | 53 hr |
| Nov 7, 2:01 AM PST | Winter Weather Advisory | MFR | Siskiyou | 53 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.