Alert archive / California / Winter Storm Warnings in 2021
Winter Storm Warning 8, NWS Sacramento, CA
NWS Sacramento, CA issued this winter storm warning at Dec 10, 2021, 2:33 PM PST. It took effect at Dec 11, 2021, 4:00 PM PST. It was in force for 71 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 10, 2021, 2:33 PM PST (22:33 UTC)
- In effect from
- Dec 11, 2021, 4:00 PM PST
- Expired
- Dec 14, 2021, 3:03 PM PST
- In force
- 71 hr
- Issued by
- NWS Sacramento, CA
The text
As transmitted.
064 WWUS46 KSTO 102233 WSWSTO URGENT - WINTER WEATHER MESSAGE National Weather Service Sacramento CA 233 PM PST Fri Dec 10 2021 ...Dangerous Winter Storm to Produce Very Heavy Snow and with Strong Winds and White-Out Conditions... .A strong winter storm will bring very heavy snow to the mountains of northern California. Snow will first arrive to northwestern Shasta County Saturday afternoon, spreading southeast into the southern Cascades and northern Sierra Saturday night or Sunday morning. Snow levels will gradually lower over time through late Monday and Tuesday. Expect tremendous snow accumulations at pass levels with yardsticks required for snow measurement. This will results in significant travel delays with extremely difficult to impossible travel over the mountains. Strong winds will further reduce visibilities during this event with white-out conditions. CAZ013-063-111400- /O.UPG.KSTO.WS.A.0010.211212T0000Z-211214T1200Z/ /O.NEW.KSTO.WS.W.0008.211212T0000Z-211214T1200Z/ Shasta Lake Area / Northern Shasta County- Mountains Southwestern Shasta County to Western Colusa County- 233 PM PST Fri Dec 10 2021 ...WINTER STORM WARNING IN EFFECT FROM 4 PM SATURDAY TO 4 AM PST TUESDAY ABOVE 3500 FEET... * WHAT...Heavy snow with near-zero visibilities, making travel difficult to impossible. Damage to trees and power lines is possible. Snow accumulations 1 to 3 feet. Localized amounts up to 5 to 6 feet possible above 5000 ft. * WHERE...Shasta Lake Area / Northern Shasta County and Mountains Southwestern Shasta County to Western Colusa County. * WHEN...4 PM Saturday to 4 AM Tuesday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times with white-out conditions. Snow levels will drop to 2000 ft by early Tuesday, possibly lower. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ CAZ014-068-069-111400- /O.UPG.KSTO.WS.A.0010.211212T0600Z-211215T0600Z/ /O.NEW.KSTO.WS.W.0008.211212T0600Z-211215T0600Z/ Burney Basin / Eastern Shasta County- Western Plumas County/Lassen Park- West Slope Northern Sierra Nevada- 233 PM PST Fri Dec 10 2021 ...WINTER STORM WARNING IN EFFECT FROM 10 PM SATURDAY TO 10 PM PST TUESDAY ABOVE 3500 FEET... * WHAT...Heavy snow with near-zero visibilities, making travel difficult to impossible. Damage to trees and power lines is possible. Snow accumulations of 2 to 5 feet. Localized accumulations exceeding 6 feet at higher elevations. * WHERE...Western Plumas County/Lassen Park and West Slope Northern Sierra Nevada including Interstate 80 over Donner Pass, Highway 50 over Echo Summit and Highway 88 over Carson Pass. * WHEN...10 PM Saturday to 10 PM Tuesday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times with white-out conditions. Snow levels will drop to as low as 2000 ft by late Tuesday afternoon or evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
11 follow-up statements
399 WWUS46 KSTO 111342 WSWSTO URGENT - WINTER WEATHER MESSAGE National Weather Service Sacramento CA 542 AM PST Sat Dec 11 2021 ...Dangerous Winter Storm to Produce Very Heavy Snow and with Strong Winds and White-Out Conditions... .A strong winter storm will bring very heavy snow to the mountains of northern California. Snow will first arrive to northwestern Shasta County this afternoon, spreading southeast into the southern Cascades and northern Sierra tonight and Sunday morning. Snow levels will gradually lower over time through late Monday and Tuesday. Expect tremendous snow accumulations at pass levels with yardsticks required for snow measurement. This will results in significant travel delays with extremely difficult to impossible travel over the mountains. Strong winds will further reduce visibilities during this event with white-out conditions. CAZ013-063-120200- /O.CON.KSTO.WS.W.0008.211212T0000Z-211214T1200Z/ Shasta Lake Area / Northern Shasta County- Mountains Southwestern Shasta County to Western Colusa County- 542 AM PST Sat Dec 11 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 AM PST TUESDAY ABOVE 3500 FEET... * WHAT...Heavy snow with near-zero visibilities, making travel difficult to impossible. Damage to trees and power lines is possible. Snow accumulations 1 to 3 feet. Localized amounts up to 5 to 6 feet possible above 5000 ft. * WHERE...Shasta Lake Area / Northern Shasta County and Mountains Southwestern Shasta County to Western Colusa County. * WHEN...4 PM Saturday to 4 AM Tuesday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times with white-out conditions. Snow levels will drop to 2000 ft by early Tuesday, possibly lower. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ CAZ014-068-069-120200- /O.CON.KSTO.WS.W.0008.211212T0600Z-211215T0600Z/ Burney Basin / Eastern Shasta County- Western Plumas County/Lassen Park- West Slope Northern Sierra Nevada- 542 AM PST Sat Dec 11 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 10 PM PST TUESDAY ABOVE 3500 FEET... * WHAT...Heavy snow with near-zero visibilities, making travel difficult to impossible. Damage to trees and power lines is possible. Snow accumulations of 2 to 5 feet. Localized accumulations exceeding 6 feet at higher elevations. * WHERE...Western Plumas County/Lassen Park and West Slope Northern Sierra Nevada including Interstate 80 over Donner Pass, Highway 50 over Echo Summit and Highway 88 over Carson Pass. * WHEN...10 PM Saturday to 10 PM Tuesday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times with white-out conditions. Snow levels will drop to as low as 2000 ft by late Tuesday afternoon or evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
956 WWUS46 KSTO 112204 WSWSTO URGENT - WINTER WEATHER MESSAGE National Weather Service Sacramento CA 204 PM PST Sat Dec 11 2021 ...Dangerous Winter Storm to Produce Very Heavy Snow with Strong Winds and Whiteout Conditions... .A strong winter storm will bring very heavy snow to the mountains of northern California. Snow will first arrive to northwestern Shasta County this afternoon including portions of I-5 north of Redding, spreading southeast into the southern Cascades and northern Sierra tonight and Sunday morning. Snow levels will gradually lower over time through late Monday and Tuesday. Expect tremendous snow accumulations at pass levels with yardsticks required for snow measurement. This will results in significant travel delays with extremely difficult to impossible travel over the mountains. Strong winds will further reduce visibilities during this event with whiteout conditions. CAZ013-063-121300- /O.CON.KSTO.WS.W.0008.211212T0000Z-211214T1200Z/ Shasta Lake Area / Northern Shasta County- Mountains Southwestern Shasta County to Western Colusa County- 204 PM PST Sat Dec 11 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST TUESDAY... * WHAT...Heavy snow with near-zero visibilities, making travel difficult to impossible. Damage to trees and power lines is possible. Snow accumulation 8 to 36 inches. Localized amounts up to 4 to 6 feet possible above 4000 ft. * WHERE...Shasta Lake Area / Northern Shasta County and Mountains Southwestern Shasta County to Western Colusa County including Interstate 5 north of Redding and portions of Highway 299. * WHEN...4 PM Saturday to 4 AM Tuesday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times with white-out conditions. Snow levels will drop to 2000 ft by early Tuesday, possibly lower. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ CAZ014-068-069-121300- /O.CON.KSTO.WS.W.0008.211212T0600Z-211215T0600Z/ Burney Basin / Eastern Shasta County- Western Plumas County/Lassen Park- West Slope Northern Sierra Nevada- 204 PM PST Sat Dec 11 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 10 PM PST TUESDAY ABOVE 3500 FEET... * WHAT...Heavy snow with near-zero visibilities, making travel difficult to impossible. Damage to trees and power lines is possible. Snow accumulations of 2 to 5 feet. Localized accumulations exceeding 6 feet at higher elevations. * WHERE...Western Plumas County/Lassen Park and West Slope Northern Sierra Nevada including Interstate 80 over Donner Pass, Highway 50 over Echo Summit and Highway 88 over Carson Pass. * WHEN...10 PM Saturday to 10 PM Tuesday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times with white-out conditions. Snow levels will drop to as low as 2000 ft by late Tuesday afternoon or evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
125 WWUS46 KSTO 120915 WSWSTO URGENT - WINTER WEATHER MESSAGE National Weather Service Sacramento CA 115 AM PST Sun Dec 12 2021 ...Dangerous Winter Storm to Produce Very Heavy Snow with Strong Winds and Whiteout Conditions... .A strong winter storm will bring very heavy snow to the mountains of northern California. Snow is falling over portions of I- 5 north of Redding and will spread southeast into the southern Cascades and northern Sierra into Sunday morning. Snow levels will gradually lower over time through late Monday and Tuesday. Expect tremendous snow accumulations at pass levels with yardsticks required for snow measurement. This will results in significant travel delays with extremely difficult to impossible travel over the mountains. Strong winds will further reduce visibilities during this event with whiteout conditions. CAZ013-063-130200- /O.CON.KSTO.WS.W.0008.000000T0000Z-211214T1200Z/ Shasta Lake Area / Northern Shasta County- Mountains Southwestern Shasta County to Western Colusa County- 115 AM PST Sun Dec 12 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST TUESDAY... * WHAT...Heavy snow occurring. Travel will be very difficult to impossible. Additional snow accumulations of 6 to 15 inches along I 5 from Shasta Lake to Sims and Castella. Localized amounts up to 4 to 6 feet possible above 4,000 ft. * WHERE...Snow level down to 1,000 feet at times including the Shasta Lake Area / Northern Shasta County and Mountains Southwestern Shasta County to Western Colusa County. * WHEN...Until 4 AM Tuesday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times with white-out conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ CAZ014-068-069-130200- /O.CON.KSTO.WS.W.0008.000000T0000Z-211215T0600Z/ Burney Basin / Eastern Shasta County- Western Plumas County/Lassen Park- West Slope Northern Sierra Nevada- 115 AM PST Sun Dec 12 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST TUESDAY ABOVE 3500 FEET... * WHAT...Heavy snow occurring. Travel will be very difficult to impossible, including during the evening commute on Monday. Damage to trees and power lines is possible. Additional snow accumulations of 3 to 5 feet, Localized accumulations exceeding 6 feet at higher elevations. * WHERE...Western Plumas County/Lassen Park and West Slope Northern Sierra Nevada including Interstate 80 over Donner Pass, Highway 50 over Echo Summit and Highway 88 over Carson Pass. * WHEN...Until 10 PM Tuesday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
079 WWUS46 KSTO 122245 WSWSTO URGENT - WINTER WEATHER MESSAGE National Weather Service Sacramento CA 245 PM PST Sun Dec 12 2021 ...Dangerous Winter Storm to Produce Very Heavy Snow with Strong Winds and Whiteout Conditions... .A strong winter storm will bring very heavy snow to the mountains of northern California. Snow showers will become moderate to heavy snow this evening and will continue into tomorrow. Snow levels will gradually lower over time through late Monday and Tuesday. Expect tremendous snow accumulation at pass levels with yardsticks required for snow measurement. This will results in significant travel delays with extremely difficult to impossible travel over the mountains. Strong winds will further reduce visibilities during this event with whiteout conditions. CAZ013-063-131400- /O.CON.KSTO.WS.W.0008.000000T0000Z-211214T1200Z/ Shasta Lake Area / Northern Shasta County- Mountains Southwestern Shasta County to Western Colusa County- 245 PM PST Sun Dec 12 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST TUESDAY... * WHAT...Heavy snow occurring. Travel will be very difficult to impossible. Additional snow accumulations of 3 to 12 inches along I 5 from north of Shasta Lake to Sims and Castella. Localized amounts up to 2 to 4 feet possible above 4,000 ft. * WHERE...Shasta Lake Area / Northern Shasta County and Mountains Southwestern Shasta County to Western Colusa County including portions of Interstate 5 north of Redding and Highway 299. * WHEN...Until 4 AM Tuesday. * ADDITIONAL DETAILS...Snow level down to 1,500 feet at times. Be prepared for significant reductions in visibility at times with white-out conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ CAZ014-068-069-131400- /O.CON.KSTO.WS.W.0008.000000T0000Z-211215T0600Z/ Burney Basin / Eastern Shasta County- Western Plumas County/Lassen Park- West Slope Northern Sierra Nevada- 245 PM PST Sun Dec 12 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST TUESDAY ABOVE 3500 FEET... * WHAT...Heavy snow occurring. Travel will be very difficult to impossible, including during the evening commute on Monday. Damage to trees and power lines is possible. Additional snow accumulations of 3 to 5 feet, Localized accumulations exceeding 6 feet at higher elevations. * WHERE...Western Plumas County/Lassen Park and West Slope Northern Sierra Nevada including Interstate 80 over Donner Pass, Highway 50 over Echo Summit and Highway 88 over Carson Pass. * WHEN...Until 10 PM Tuesday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
444 WWUS46 KSTO 130952 WSWSTO URGENT - WINTER WEATHER MESSAGE National Weather Service Sacramento CA 152 AM PST Mon Dec 13 2021 ...Dangerous Winter Storm to Produce Very Heavy Snow with Strong Winds and Whiteout Conditions... .A strong winter storm will bring very heavy snow to the mountains of northern California. Moderate to heavy snow showers will continue into tomorrow. Snow levels will gradually lower over time through late Monday and Tuesday. Expect tremendous snow accumulation at pass levels with yardsticks required for snow measurement. This will results in significant travel delays with extremely difficult to impossible travel over the mountains. Strong winds will further reduce visibilities during this event with whiteout conditions. CAZ013-063-140045- /O.CON.KSTO.WS.W.0008.000000T0000Z-211214T1200Z/ Shasta Lake Area / Northern Shasta County- Mountains Southwestern Shasta County to Western Colusa County- 152 AM PST Mon Dec 13 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST TUESDAY... * WHAT...Heavy snow occurring. Travel will be very difficult to impossible. Additional snow accumulations of 3 to 12 inches along I 5 from north of Shasta Lake to Sims and Castella. Localized amounts up to 2 to 4 feet possible above 4,000 ft. * WHERE...Shasta Lake Area / Northern Shasta County and Mountains Southwestern Shasta County to Western Colusa County including portions of Interstate 5 north of Redding and Highway 299. * WHEN...Until 4 AM Tuesday. * ADDITIONAL DETAILS...Snow level down to 1,500 feet at times. Be prepared for significant reductions in visibility at times with white-out conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ CAZ014-068-069-140045- /O.CON.KSTO.WS.W.0008.000000T0000Z-211215T0600Z/ Burney Basin / Eastern Shasta County- Western Plumas County/Lassen Park- West Slope Northern Sierra Nevada- 152 AM PST Mon Dec 13 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST TUESDAY ABOVE 3500 FEET... * WHAT...Heavy snow occurring. Travel will be very difficult to impossible, including during the evening commute on Monday. Damage to trees and power lines is possible. Additional snow accumulations of 3 to 5 feet, Localized accumulations exceeding 6 feet at higher elevations. * WHERE...Western Plumas County/Lassen Park and West Slope Northern Sierra Nevada including Interstate 80 over Donner Pass, Highway 50 over Echo Summit and Highway 88 over Carson Pass. * WHEN...Until 10 PM Tuesday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
035 WWUS46 KSTO 132201 WSWSTO URGENT - WINTER WEATHER MESSAGE National Weather Service Sacramento CA 201 PM PST Mon Dec 13 2021 ...Dangerous Winter Storm to Produce Very Heavy Snow with Strong Winds and Whiteout Conditions... .A strong winter storm continues to bring very heavy snow to the mountains of northern California. Moderate to heavy snow showers will continue into tomorrow. Snow levels will gradually lower over time through late tonight and Tuesday. Expect tremendous snow accumulation at pass levels with yardsticks required for snow measurement. This will result in significant travel delays with extremely difficult to impossible travel over the mountains. Strong winds will further reduce visibilities during this event with whiteout conditions. CAZ013-063-141200- /O.CON.KSTO.WS.W.0008.000000T0000Z-211214T1200Z/ Shasta Lake Area / Northern Shasta County- Mountains Southwestern Shasta County to Western Colusa County- 201 PM PST Mon Dec 13 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST TUESDAY... * WHAT...Heavy snow occurring. Travel will be very difficult to impossible. Additional snow accumulations of 2 to 6 inches, with localized amounts up to 16 inches above 4000 feet, are expected. * WHERE...Shasta Lake Area / Northern Shasta County and Mountains Southwestern Shasta County to Western Colusa County including portions of Interstate 5 north of Redding and Highway 299. * WHEN...Until 4 AM Tuesday. * ADDITIONAL DETAILS...Snow level down to 1,500 feet at times. Be prepared for significant reductions in visibility at times with white-out conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ CAZ014-068-069-141300- /O.CON.KSTO.WS.W.0008.000000T0000Z-211215T0600Z/ Burney Basin / Eastern Shasta County- Western Plumas County/Lassen Park- West Slope Northern Sierra Nevada- 201 PM PST Mon Dec 13 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST TUESDAY ABOVE 3500 FEET... * WHAT...Heavy snow occurring. Travel will be very difficult to impossible, including during the evening commute today. Damage to trees and power lines possible. Additional snow accumulations of 3 to 4 feet are expected, with localized amounts exceeding 5 feet at higher elevations. * WHERE...Burney Basin / Eastern Shasta County, Western Plumas County/Lassen Park and West Slope Northern Sierra Nevada. * WHEN...Until 10 PM Tuesday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times with white-out conditions. Snow levels will drop to as low as 2000 ft by late Tuesday afternoon or evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
126 WWUS46 KSTO 140729 WSWSTO URGENT - WINTER WEATHER MESSAGE National Weather Service Sacramento CA 1129 PM PST Mon Dec 13 2021 ...Dangerous Winter Storm to Produce Very Heavy Snow with Strong Winds and Whiteout Conditions... .A strong winter storm continues to bring very heavy snow to the mountains of northern California. Moderate to heavy snow showers will continue into Tuesday. Snow levels will gradually lower over time through late tonight and Tuesday and into the Sierra Foothills. Expect tremendous snow accumulation at pass levels with yardsticks required for snow measurement. This will result in significant travel delays with extremely difficult to impossible travel over the mountains. Strong winds will further reduce visibilities during this event with whiteout conditions. CAZ068-069-142000- /O.CAN.KSTO.WS.W.0008.000000T0000Z-211215T0600Z/ /O.NEW.KSTO.WS.W.0009.211214T1200Z-211215T0600Z/ Western Plumas County/Lassen Park- West Slope Northern Sierra Nevada- 1129 PM PST Mon Dec 13 2021 ...WINTER STORM WARNING IN EFFECT Until 10 PM PST TUESDAY... * WHAT...Heavy snow expected. Travel will be very difficult to impossible through Tuesday. Damage to trees and power lines possible. Total snow accumulations of 3 to 4 feet are expected, with localized amounts exceeding 5 feet at higher elevations. d. * WHERE...Western Plumas County/Lassen Park and West Slope Northern Sierra Nevada. * WHEN...Until 10 PM Tuesday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Snow level rising to 3500 feet during the day on Tuesday. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ CAZ066-067-141400- /O.EXB.KSTO.WS.W.0008.000000T0000Z-211214T1400Z/ Northeast Foothills/Sacramento Valley-Motherlode- Including the city of Grass Valley 1129 PM PST Mon Dec 13 2021 ...WINTER STORM WARNING IN EFFECT UNTIL 6 AM PST TUESDAY ABOVE 2000 FEET... * WHAT...Heavy snow occurring. Plan on difficult travel conditions. Additional snow accumulations of up to 2 inches, with localized amounts up to 8 inches, are expected. * WHERE...Northeast Foothills/Sacramento Valley and Motherlode. * WHEN...Until 6 AM Tuesday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ CAZ013-063-141200- /O.CON.KSTO.WS.W.0008.000000T0000Z-211214T1200Z/ Shasta Lake Area / Northern Shasta County- Mountains Southwestern Shasta County to Western Colusa County- 1129 PM PST Mon Dec 13 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST TUESDAY... * WHAT...Heavy snow occurring. Travel will be very difficult to impossible. Additional snow accumulations of 2 to 6 inches, with localized amounts up to 16 inches above 4000 feet, are expected. * WHERE...Shasta Lake Area / Northern Shasta County and Mountains Southwestern Shasta County to Western Colusa County including portions of Interstate 5 north of Redding and Highway 299. * WHEN...Until 4 AM Tuesday. * ADDITIONAL DETAILS...now level down to 1,500 feet at times. Be prepared for significant reductions in visibility at times with white-out conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ CAZ014-142000- /O.CON.KSTO.WS.W.0008.000000T0000Z-211215T0600Z/ Burney Basin / Eastern Shasta County- 1129 PM PST Mon Dec 13 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST TUESDAY... * WHAT...Heavy snow occurring. Plan on difficult travel conditions. Snow accumulations from 4 to 8 inches with up to 15 inches over higher elevations expected. * WHERE...Burney Basin / Eastern Shasta County. * WHEN...Until 10 PM Tuesday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
074 WWUS46 KSTO 141148 WSWSTO URGENT - WINTER WEATHER MESSAGE National Weather Service Sacramento CA 348 AM PST Tue Dec 14 2021 ...Dangerous Winter Storm to Produce Very Heavy Snow with Strong Winds and Whiteout Conditions... .A strong winter storm continues to bring very heavy snow to the mountains and foothills of northern California. Moderate to heavy snow showers will continue into Tuesday. Snow levels have dropped to around 1500 feet with snow into some of the lower foothill communities. Another winter storm with low snow levels and heavy snow will affect northern California Wednesday and Thursday. CAZ013-063-150300- /O.CAN.KSTO.WS.W.0008.000000T0000Z-211214T1200Z/ /O.NEW.KSTO.WS.A.0011.211215T1200Z-211216T1800Z/ Shasta Lake Area / Northern Shasta County- Mountains Southwestern Shasta County to Western Colusa County- Including the city of Shasta Dam 348 AM PST Tue Dec 14 2021 ...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY MORNING ABOVE 1000 FEET... ...WINTER STORM WARNING IS CANCELLED... * WHAT...Heavy snow possible. Travel will be very difficult to impossible, including during the evening commute on Wednesday. Total snow accumulations of 8 to 12 inches, with localized amounts up to 2 feet over mountain peaks, are possible. * WHERE...Shasta Lake Area / Northern Shasta County and Mountains Southwestern Shasta County to Western Colusa County. * WHEN...From Wednesday morning through Thursday morning. * ADDITIONAL DETAILS...Significant reductions in visibility are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. $$ CAZ068-150300- /O.NEW.KSTO.WS.A.0011.211215T1800Z-211216T1800Z/ /O.EXT.KSTO.WS.W.0009.211214T1148Z-211215T0600Z/ Western Plumas County/Lassen Park- 348 AM PST Tue Dec 14 2021 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 10 PM PST THIS EVENING... ...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY MORNING ABOVE 2000 FEET... * WHAT...Heavy snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 5 to 10 inches are expected. * WHERE...Western Plumas County/Lassen Park. * WHEN...For the Winter Storm Warning, until 10 PM today. For the Winter Storm Watch, from Wednesday morning through Thursday morning. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Significant reductions in visibility are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ CAZ069-150300- /O.NEW.KSTO.WS.A.0011.211216T0000Z-211216T1800Z/ /O.EXT.KSTO.WS.W.0009.211214T1148Z-211215T0600Z/ West Slope Northern Sierra Nevada- 348 AM PST Tue Dec 14 2021 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 10 PM PST THIS EVENING... ...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY MORNING... * WHAT...Heavy snow occurring. Travel will be very difficult to impossible. Tree branches could fall as well. Additional snow accumulations of 11 to 15 inches, with localized amounts up to 2 feet, are possible. * WHERE...West Slope Northern Sierra Nevada. * WHEN...For the Winter Storm Warning, until 10 PM today. For the Winter Storm Watch, from Wednesday afternoon through Thursday morning. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Significant reductions in visibility are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. $$ CAZ067-150300- /O.NEW.KSTO.WS.A.0011.211216T0000Z-211216T1800Z/ /O.CON.KSTO.WS.W.0008.000000T0000Z-211214T1400Z/ Motherlode- Including the city of Grass Valley 348 AM PST Tue Dec 14 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM PST EARLY THIS MORNING ABOVE 1500 FEET... ...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY MORNING ABOVE 2000 FEET... * WHAT...Heavy wet snow possible above 1500 feet. Plan on difficult travel conditions, including during the morning commute. Additional snow accumulations of 1 to 3 inches are expected. Localized amounts up to 8 inches, are possible. * WHERE...Motherlode. * WHEN...For the Winter Storm Warning, until 6 AM today. For the Winter Storm Watch, from Wednesday afternoon through Thursday morning. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Significant reductions in visibility are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ CAZ066-150300- /O.NEW.KSTO.WS.A.0011.211215T1800Z-211216T1800Z/ /O.CON.KSTO.WS.W.0008.000000T0000Z-211214T1400Z/ Northeast Foothills/Sacramento Valley- 348 AM PST Tue Dec 14 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM PST EARLY THIS MORNING ABOVE 1500 FEET... ...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY MORNING ABOVE 2000 FEET... * WHAT...Heavy snow occurring above 1500 feet. Additional snow accumulations of 1 to 3 inches are expected. Localized amounts up to 8 inches, are possible. * WHERE...Northeast Foothills/Sacramento Valley. * WHEN...For the Winter Storm Warning, until 6 AM today. For the Winter Storm Watch, from Wednesday morning through Thursday morning. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Significant reductions in visibility are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. $$ CAZ014-150300- /O.NEW.KSTO.WS.A.0011.211215T1800Z-211216T1800Z/ /O.CON.KSTO.WS.W.0008.000000T0000Z-211215T0600Z/ Burney Basin / Eastern Shasta County- Including the city of Burney 348 AM PST Tue Dec 14 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... ...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY MORNING ABOVE 2000 FEET... * WHAT...Heavy snow occurring. Plan on difficult travel conditions. Above 3500 feet, additional snow accumulations of 3 to 5 inches are expected. * WHERE...Burney Basin / Eastern Shasta County. * WHEN...For the Winter Storm Warning, until 10 PM today. For the Winter Storm Watch, from Wednesday morning through Thursday morning. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Significant reductions in visibility are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. $$
615 WWUS46 KSTO 141339 WSWSTO URGENT - WINTER WEATHER MESSAGE National Weather Service Sacramento CA 539 AM PST Tue Dec 14 2021 ...Dangerous Winter Storm to Produce Very Heavy Snow with Strong Winds and Whiteout Conditions... .A strong winter storm continues to bring very heavy snow to the mountains and foothills of northern California. Moderate to heavy snow showers will continue into Tuesday. Snow levels have dropped to around 1500 feet with snow into some of the lower foothill communities. Another winter storm with low snow levels and heavy snow will affect northern California Wednesday and Thursday. CAZ067-150045- /O.EXT.KSTO.WS.W.0008.000000T0000Z-211214T1600Z/ /O.CON.KSTO.WS.A.0011.211216T0000Z-211216T1800Z/ Motherlode- Including the city of Grass Valley 539 AM PST Tue Dec 14 2021 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 8 AM PST THIS MORNING ABOVE 1500 FEET... ...WINTER STORM WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY MORNING ABOVE 2000 FEET... * WHAT...Heavy wet snow possible above 1500 feet. Plan on difficult travel conditions, including during the morning commute. Additional snow accumulations of 1 to 3 inches are expected. Localized amounts up to 8 inches, are possible. * WHERE...Motherlode. * WHEN...For the Winter Storm Warning, until 6 AM today. For the Winter Storm Watch, from Wednesday afternoon through Thursday morning. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Significant reductions in visibility are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for wet snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. $$ CAZ066-150045- /O.EXT.KSTO.WS.W.0008.000000T0000Z-211214T1600Z/ /O.CON.KSTO.WS.A.0011.211215T1800Z-211216T1800Z/ Northeast Foothills/Sacramento Valley- 539 AM PST Tue Dec 14 2021 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 8 AM PST THIS MORNING ABOVE 1500 FEET... ...WINTER STORM WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY MORNING ABOVE 2000 FEET... * WHAT...Heavy snow occurring above 1500 feet. Additional snow accumulations of 1 to 3 inches are expected. Localized amounts up to 8 inches, are possible. * WHERE...Northeast Foothills/Sacramento Valley. * WHEN...For the Winter Storm Warning, until 6 AM today. For the Winter Storm Watch, from Wednesday morning through Thursday morning. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Significant reductions in visibility are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for wet snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. $$ CAZ068-150045- /O.EXT.KSTO.WS.W.0009.000000T0000Z-211215T0200Z/ /O.CON.KSTO.WS.A.0011.211215T1800Z-211216T1800Z/ Western Plumas County/Lassen Park- 539 AM PST Tue Dec 14 2021 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 6 PM PST THIS EVENING... ...WINTER STORM WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY MORNING ABOVE 2000 FEET... * WHAT...Heavy snow occurring. Plan on difficult travel conditions. Additional snow accumulations of 5 to 10 inches are expected. * WHERE...Western Plumas County/Lassen Park. * WHEN...For the Winter Storm Warning, until 10 PM today. For the Winter Storm Watch, from Wednesday morning through Thursday morning. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Significant reductions in visibility are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. $$ CAZ069-150045- /O.EXT.KSTO.WS.W.0009.000000T0000Z-211215T0200Z/ /O.CON.KSTO.WS.A.0011.211216T0000Z-211216T1800Z/ West Slope Northern Sierra Nevada- 539 AM PST Tue Dec 14 2021 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 6 PM PST THIS EVENING... ...WINTER STORM WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY MORNING ABOVE 2000 FEET... * WHAT...Heavy snow occurring. Travel will be very difficult to impossible. Tree branches could fall as well. Additional snow accumulations of 11 to 15 inches, with localized amounts up to 2 feet, are possible. * WHERE...West Slope Northern Sierra Nevada. * WHEN...For the Winter Storm Warning, until 10 PM today. For the Winter Storm Watch, from Wednesday afternoon through Thursday morning. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Significant reductions in visibility are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. $$ CAZ014-150045- /O.EXT.KSTO.WS.W.0008.000000T0000Z-211215T0200Z/ /O.CON.KSTO.WS.A.0011.211215T1800Z-211216T1800Z/ Burney Basin / Eastern Shasta County- Including the city of Burney 539 AM PST Tue Dec 14 2021 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 6 PM PST THIS EVENING... ...WINTER STORM WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY MORNING ABOVE 2000 FEET... * WHAT...Heavy snow occurring. Plan on difficult travel conditions. Above 3500 feet, additional snow accumulations of 3 to 5 inches are expected. * WHERE...Burney Basin / Eastern Shasta County. * WHEN...For the Winter Storm Warning, until 10 PM today. For the Winter Storm Watch, from Wednesday morning through Thursday morning. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. Significant reductions in visibility are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of ice are occurring This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. $$ CAZ013-063-150045- /O.CON.KSTO.WS.A.0011.211215T1200Z-211216T1800Z/ Shasta Lake Area / Northern Shasta County- Mountains Southwestern Shasta County to Western Colusa County- Including the city of Shasta Dam 539 AM PST Tue Dec 14 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY MORNING ABOVE 1000 FEET... * WHAT...Heavy snow possible. Travel will be very difficult to impossible, including during the evening commute on Wednesday. Total snow accumulations of 8 to 12 inches, with localized amounts up to 2 feet over mountain peaks, are possible. * WHERE...Shasta Lake Area / Northern Shasta County and Mountains Southwestern Shasta County to Western Colusa County. * WHEN...From Wednesday morning through Thursday morning. * ADDITIONAL DETAILS...Significant reductions in visibility are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. $$
436 WWUS46 KSTO 141625 WSWSTO URGENT - WINTER WEATHER MESSAGE National Weather Service Sacramento CA 825 AM PST Tue Dec 14 2021 ...Winter Storm Continues to Produce Locally Heavy Snow Today... .A strong winter storm continues to bring locally heavy snow to the mountains and upper foothills of northern California. Moderate to locally heavy snow showers will continue today. Another winter storm with low snow levels and heavy snow will affect northern California Wednesday and Thursday. CAZ067-150030- /O.EXP.KSTO.WS.W.0008.000000T0000Z-211214T1600Z/ /O.CON.KSTO.WS.A.0011.211216T0000Z-211216T1800Z/ Motherlode- Including the city of Grass Valley 825 AM PST Tue Dec 14 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY MORNING ABOVE 2000 FEET... ...WINTER STORM WARNING HAS EXPIRED... * WHAT...Heavy wet snow possible. Plan on difficult travel conditions, including during the evening commute on Wednesday. Total wet snow accumulations of up to 2 inches, with localized amounts up to 12 inches, are possible. * WHERE...Motherlode. * WHEN...From Wednesday afternoon through Thursday morning. * ADDITIONAL DETAILS...Significant reductions in visibility are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. $$ CAZ066-150030- /O.EXP.KSTO.WS.W.0008.000000T0000Z-211214T1600Z/ /O.CON.KSTO.WS.A.0011.211215T1800Z-211216T1800Z/ Northeast Foothills/Sacramento Valley- 825 AM PST Tue Dec 14 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY MORNING ABOVE 2000 FEET... ...WINTER STORM WARNING HAS EXPIRED... * WHAT...Heavy snow possible. Plan on difficult travel conditions, including during the evening commute on Wednesday. Total snow accumulations of 7 to 10 inches, with localized amounts up to 21 inches, are possible. * WHERE...Northeast Foothills/Sacramento Valley. * WHEN...From Wednesday morning through Thursday morning. * ADDITIONAL DETAILS...Significant reductions in visibility are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. $$ CAZ068-150030- /O.CON.KSTO.WS.W.0009.000000T0000Z-211215T0200Z/ /O.CON.KSTO.WS.A.0011.211215T1800Z-211216T1800Z/ Western Plumas County/Lassen Park- 825 AM PST Tue Dec 14 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING ABOVE 3500 FEET... ...WINTER STORM WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY MORNING ABOVE 2000 FEET... * WHAT...Heavy snow occurring above 3500 feet. Additional snow accumulations of 1 to 3 inches are expected today. Heavy snow possible above 2000 feet. Above 2000 feet, total snow accumulations of 12 to 18 inches, with localized amounts up to 3 feet, are possible. * WHERE...Western Plumas County/Lassen Park. * WHEN...For the Winter Storm Warning, until 6 PM today. For the Winter Storm Watch, from Wednesday morning through Thursday morning. * ADDITIONAL DETAILS...Significant reductions in visibility are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. $$ CAZ069-150030- /O.CON.KSTO.WS.W.0009.000000T0000Z-211215T0200Z/ /O.CON.KSTO.WS.A.0011.211216T0000Z-211216T1800Z/ West Slope Northern Sierra Nevada- 825 AM PST Tue Dec 14 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING ABOVE 3500 FEET... ...WINTER STORM WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY MORNING ABOVE 2000 FEET... * WHAT...Heavy snow occurring above 3500 feet. Additional snow accumulations of 7 to 10 inches are expected. Heavy snow possible above 2000 feet. Above 2000 feet, total snow accumulations of 11 to 15 inches, with localized amounts up to 2 feet, are possible. * WHERE...West Slope Northern Sierra Nevada. * WHEN...For the Winter Storm Warning, until 6 PM today. For the Winter Storm Watch, from Wednesday afternoon through Thursday morning. * ADDITIONAL DETAILS...Significant reductions in visibility are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. $$ CAZ014-150030- /O.CON.KSTO.WS.W.0008.000000T0000Z-211215T0200Z/ /O.CON.KSTO.WS.A.0011.211215T1800Z-211216T1800Z/ Burney Basin / Eastern Shasta County- Including the city of Burney 825 AM PST Tue Dec 14 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING ABOVE 3500 FEET... ...WINTER STORM WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY MORNING ABOVE 2000 FEET... * WHAT...Snow above 3500 feet. Additional accumulations of 1 to 2 inches possible. Heavy snow possible above 2000 feet. Above 2000 feet, total snow accumulations of 3 to 6 inches, with localized amounts up 1 foot, are possible. * WHERE...Burney Basin / Eastern Shasta County. * WHEN...For the Winter Storm Warning, until 6 PM today. For the Winter Storm Watch, from Wednesday morning through Thursday morning. * ADDITIONAL DETAILS...Significant reductions in visibility are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means significant amounts of ice are occurring This will make travel very hazardous or impossible. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. $$ CAZ013-063-150030- /O.CON.KSTO.WS.A.0011.211215T1200Z-211216T1800Z/ Shasta Lake Area / Northern Shasta County- Mountains Southwestern Shasta County to Western Colusa County- Including the city of Shasta Dam 825 AM PST Tue Dec 14 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY MORNING ABOVE 1000 FEET... * WHAT...Heavy snow possible. Total snow accumulations of 8 to 12 inches, with localized amounts up to 3 feet, are possible. * WHERE...Shasta Lake Area / Northern Shasta County and Mountains Southwestern Shasta County to Western Colusa County. * WHEN...From late tonight through Thursday morning. * ADDITIONAL DETAILS...Significant reductions in visibility are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts. $$
388 WWUS46 KSTO 142303 WSWSTO URGENT - WINTER WEATHER MESSAGE National Weather Service Sacramento CA 303 PM PST Tue Dec 14 2021 ...Second Winter Storm to bring Snow to the Mountains and Foothills Wednesday into Thursday... .Snow showers over the Sierra Nevada may continue into the evening. A second winter storm is set to impact Northern California early Wednesday through Thursday bringing additional heavy mountain snow and gusty winds to the area. Snow levels will range from 1000 to 2000 on Wednesday, gradually rising on Thursday. Significant travel delays and difficult mountain travel are anticipated. Strong winds will further reduce visibilities during this event with local whiteout conditions possible. CAZ068-151330- /O.CAN.KSTO.WS.W.0009.000000T0000Z-211215T0200Z/ /O.UPG.KSTO.WS.A.0011.211215T1800Z-211216T1800Z/ /O.NEW.KSTO.WS.W.0010.211215T1800Z-211216T1800Z/ Western Plumas County/Lassen Park- 303 PM PST Tue Dec 14 2021 ...WINTER STORM WARNING IN EFFECT FROM 10 AM WEDNESDAY TO 10 AM PST THURSDAY... ...WINTER STORM WARNING IS CANCELLED... * WHAT...Heavy snow expected. Travel will be very difficult to impossible, including during the evening commute on Wednesday. Total snow accumulations of 12 to 18 inches, with localized amounts up to 3 feet, are expected. * WHERE...Western Plumas County/Lassen Park. * WHEN...10 AM Wednesday to 10 AM Thursday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ CAZ069-151330- /O.CAN.KSTO.WS.W.0009.000000T0000Z-211215T0200Z/ /O.UPG.KSTO.WS.A.0011.211216T0000Z-211216T1800Z/ /O.NEW.KSTO.WS.W.0010.211216T0000Z-211216T1800Z/ West Slope Northern Sierra Nevada- 303 PM PST Tue Dec 14 2021 ...WINTER STORM WARNING IN EFFECT FROM 4 PM WEDNESDAY TO 10 AM PST THURSDAY... ...WINTER STORM WARNING IS CANCELLED... * WHAT...Heavy snow expected. Travel will be very difficult to impossible. Total snow accumulations of 12 to 18 inches, with localized amounts from 2 to 3 feet, are expected. * WHERE...West Slope Northern Sierra Nevada. * WHEN...4 PM Wednesday to 10 AM Thursday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ CAZ014-151330- /O.CAN.KSTO.WS.W.0008.000000T0000Z-211215T0200Z/ /O.UPG.KSTO.WS.A.0011.211215T1800Z-211216T1800Z/ /O.NEW.KSTO.WS.W.0010.211215T1200Z-211216T1800Z/ Burney Basin / Eastern Shasta County- Including the city of Burney 303 PM PST Tue Dec 14 2021 ...WINTER STORM WARNING IN EFFECT FROM 4 AM WEDNESDAY TO 10 AM PST THURSDAY... ...WINTER STORM WARNING IS CANCELLED... * WHAT...Heavy snow expected. Plan on difficult travel conditions, including during the evening commute on Wednesday. Total snow accumulations of 4 to 8 inches, with localized amounts up to 14 inches, are expected. * WHERE...Burney Basin / Eastern Shasta County. * WHEN...4 AM Wednesday to 10 AM Thursday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ CAZ063-151330- /O.UPG.KSTO.WS.A.0011.211215T1200Z-211216T1800Z/ /O.NEW.KSTO.WS.W.0010.211215T1200Z-211216T1800Z/ Mountains Southwestern Shasta County to Western Colusa County- 303 PM PST Tue Dec 14 2021 ...WINTER STORM WARNING IN EFFECT FROM 4 AM WEDNESDAY TO 10 AM PST THURSDAY... * WHAT...Heavy snow expected. Plan on difficult travel conditions. Total snow accumulations of 3 to 6 inches, with localized amounts up to 2 feet, are expected. * WHERE...Mountains Southwestern Shasta County to Western Colusa County. * WHEN...4 AM Wednesday to 10 AM Thursday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ CAZ013-151330- /O.UPG.KSTO.WS.A.0011.211215T1200Z-211216T1800Z/ /O.NEW.KSTO.WS.W.0010.211215T1200Z-211216T1800Z/ Shasta Lake Area / Northern Shasta County- Including the city of Shasta Dam 303 PM PST Tue Dec 14 2021 ...WINTER STORM WARNING IN EFFECT FROM 4 AM WEDNESDAY TO 10 AM PST THURSDAY ABOVE 1000 FEET... * WHAT...Heavy snow expected. Travel will be very difficult to impossible. Total snow accumulations of 1 to 2 feet, with localized amounts up to 3 feet, are expected. * WHERE...Shasta Lake Area / Northern Shasta County. * WHEN...4 AM Wednesday to 10 AM Thursday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ CAZ066-151330- /O.UPG.KSTO.WS.A.0011.211215T1800Z-211216T1800Z/ /O.NEW.KSTO.WS.W.0010.211215T1800Z-211216T1800Z/ Northeast Foothills/Sacramento Valley- 303 PM PST Tue Dec 14 2021 ...WINTER STORM WARNING IN EFFECT FROM 10 AM WEDNESDAY TO 10 AM PST THURSDAY ABOVE 2000 FEET... * WHAT...Heavy snow expected. Plan on difficult travel conditions, including during the evening commute on Wednesday. Total snow accumulations of 4 to 8 inches, with localized amounts up to 2 feet, are expected. * WHERE...Northeast Foothills/Sacramento Valley. * WHEN...10 AM Wednesday to 10 AM Thursday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ CAZ067-151330- /O.UPG.KSTO.WS.A.0011.211216T0000Z-211216T1800Z/ /O.NEW.KSTO.WS.W.0010.211216T0000Z-211216T1800Z/ Motherlode- Including the city of Grass Valley 303 PM PST Tue Dec 14 2021 ...WINTER STORM WARNING IN EFFECT FROM 4 PM WEDNESDAY TO 10 AM PST THURSDAY ABOVE 2000 FEET... * WHAT...Heavy wet snow expected. Plan on difficult travel conditions, including during the evening commute on Wednesday. Total wet snow accumulations of up to 2 inches, with localized amounts up to 1 foot, are expected. * WHERE...Motherlode. * WHEN...4 PM Wednesday to 10 AM Thursday. * ADDITIONAL DETAILS...Be prepared for significant reductions in visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for wet snow means there will be snow covered roads and limited visibilities. Travel is not recommended while the warning is in effect. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency.The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$
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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.