Alert archive / California / Winter Storm Warnings in 2019
Winter Storm Warning 7, NWS Reno, NV
NWS Reno, NV issued this winter storm warning at Feb 24, 2019, 12:27 PM PST for Douglas County, Washoe County, Nevada; 7 counties in California. It took effect at Feb 25, 2019, 10:00 AM PST. It was in force for 66 hr. 31 reports 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
- Feb 24, 2019, 12:27 PM PST (20:27 UTC)
- In effect from
- Feb 25, 2019, 10:00 AM PST
- Expired
- Feb 28, 2019, 4:00 AM PST
- In force
- 66 hr
- Issued by
- NWS Reno, NV
Counties Alpine County, CA, El Dorado County, CA, Lassen County, CA, Nevada County, CA, Placer County, CA, Plumas County, CA, Sierra County, CA, Douglas County, NV, Washoe County, NV
The radar
The Reno radar (KRGX), 80 km from the middle of the area, began a volume at 20:25 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 |
|---|---|---|---|
| Feb 26, 3:00 AM PST | SNOW 18.8 | 5 Wnw Susanville, CA | 18.8 INCHES AS OF 3AM IN PAST 24 HOURS. ELEVATION 5072. |
| Feb 26, 5:50 AM PST | HEAVY SNOW 40 | 1 Nw Donner Peak, CA | CALTRANS REPORTED 40 INCHES OF SNOW AT DONNER PASS, CA OVER 24 HOURS, 44 INCHES STORM TOTAL. ELEVATION 7100 FEET. |
| Feb 26, 5:58 AM PST | SNOW 8 | 3 Ese South Lake Tahoe, CA | 8 INCHES REPORTED IN THE PAST 24 HOURS AT HEAVENLY SKI RESORT. |
| Feb 26, 6:00 AM PST | SNOW 20 | 1 Sw Alpine Meadows, CA | 20 INCHES REPORTED IN THE PAST 24 HOURS AT ALPINE MEADOWS SKI RESORT. |
| Feb 26, 6:00 AM PST | SNOW 22 | 1 Wsw Squaw Valley, CA | 22 INCHES REPORTED IN THE PAST 24 HOURS AT SQUAW VALLEY SKI RESORT. |
| Feb 26, 6:18 AM PST | SNOW 20 | 1 Ssw Northstar, CA | 20 INCHES REPORTED IN THE PAST 24 HOURS AT NORTHSTAR SKI RESORT. |
| Feb 26, 6:37 AM PST | SNOW 15 | 1 Ne Mount Rose Summit, NV | 12-15 INCHES REPORTED IN THE PAST 24 HOURS AT MT ROSE SKI RESORT. |
| Feb 26, 7:00 AM PST | SNOW 3 | 2 Nw Meyers, CA | 3 INCHES OF SNOW MEASURED IN PAST 24 HOURS. ELEVATION 6319. |
| Feb 26, 7:00 AM PST | SNOW 15 | 3 E Incline Village, NV | 15 INCHES REPORTED IN THE PAST 24 HOURS AT DIAMOND PEAK SKI RESORT. |
| Feb 26, 7:00 AM PST | SNOW 16 | 4 Nw Truckee, CA | 16 INCHES REPORTED IN THE PAST 24 HOURS AT TAHOE DONNER SKI RESORT. |
| Feb 26, 8:00 AM PST | SNOW 4.3 | 1 Ssw Boca Reservoir, CA | 4.3 INCHES OF SNOWFALL MEASURED AT BOCA RESERVOIR. LIQUID EQUIVALENT OF 0.42 INCHES. ELEVATION 5,567. |
| Feb 26, 8:00 AM PST | SNOW 7 | 1 N Spaulding, CA | 7 INCHES OF SNOWFALL MEASURED IN PAST 24 HOURS. ELEVATION 5146. |
| Feb 26, 8:00 AM PST | SNOW 13 | Tahoe City, CA | 13 INCHES OF SNOWFALL MEASURED IN TAHOE CITY. LIQUID EQUIVALENT OF 1.05 INCHES. |
| Feb 26, 8:00 AM PST | HEAVY SNOW 28 | 1 W Donner Peak, CA | THERE WAS 28 INCHES OF NEW SNOW REPORTED AT SUGAR BOWL SKI RESORT OVER 24 HOURS. |
| Feb 26, 8:00 AM PST | HEAVY SNOW 30 | 2 Ene Soda Springs, CA | THERE WERE 30 INCHES OF NEW SNOW REPORTED OVER 24 HOURS AT BOREAL SKI RESORT. |
| Feb 26, 8:00 AM PST | HEAVY SNOW 30 | Soda Springs, CA | THERE WERE 30 INCHES OF NEW SNOW REPORTED AT SODA SPRINGS SKI RESORT OVER 24 HOURS. |
| Feb 26, 8:36 AM PST | SNOW 20 | Homewood, CA | 20 INCHES REPORTED IN THE PAST 24 HOURS AT HOMEWOOD SKI RESORT. |
| Feb 26, 9:32 AM PST | SNOW 14 | Kings Beach, CA | 14 INCHES REPORTED IN THE PAST 24 HOURS AT KINGS BEACH. ELEVATION 6500 FEET. |
| Feb 26, 12:00 PM PST | SNOW 16 | 1 Ne Incline Village, NV | A TRAINED NWS SPOTTER REPORTED 16 INCHES OF SNOWFALL SINCE 2PM YESTERDAY. ELEVATION 6700. |
| Feb 27, 6:00 AM PST | SNOW 16 | 1 Sw Alpine Meadows, CA | 16 INCHES OF NEW SNOWFALL IN THE PAST 24 HOURS REPORTED AT ALPINE MEADOWS SKI RESORT. |
| Feb 27, 6:19 AM PST | SNOW 16 | 1 Ssw Northstar, CA | 16 INCHES OF NEW SNOWFALL IN THE PAST 24 HOURS REPORTED AT NORTHSTAR SKI RESORT. |
| Feb 27, 6:37 AM PST | SNOW 12 | 1 Ne Mount Rose Summit, NV | 12 INCHES OF NEW SNOWFALL IN THE PAST 24 HOURS REPORTED AT MT ROSE SKI RESORT. |
| Feb 27, 6:45 AM PST | SNOW 10 | 3 E Incline Village, NV | 10 INCHES OF NEW SNOWFALL IN THE PAST 24 HOURS REPORTED AT DIAMOND PEAK SKI RESORT. |
| Feb 27, 7:00 AM PST | SNOW 2 | 3 Ese South Lake Tahoe, CA | 2 INCHES OF NEW SNOWFALL IN THE PAST 24 HOURS REPORTED AT HEAVENLY SKI RESORT. |
| Feb 27, 7:00 AM PST | SNOW 2.5 | 2 Nw Meyers, CA | 2.5 INCHES OF NEW SNOWFALL IN THE PAST 24 HOURS. ELEVATION 6319. |
| Feb 27, 7:00 AM PST | SNOW 16 | 4 Nw Truckee, CA | 16 INCHES OF NEW SNOWFALL IN THE PAST 24 HOURS REPORTED AT TAHOE DONNER SKI RESORT. |
| Feb 27, 7:11 AM PST | SNOW 24 | Homewood, CA | 24 INCHES OF NEW SNOWFALL IN THE PAST 24 HOURS REPORTED AT HOMEWOOD SKI RESORT. |
| Feb 27, 7:41 AM PST | SNOW 20 | 1 Wsw Squaw Valley, CA | 20 INCHES OF NEW SNOWFALL IN THE PAST 24 HOURS REPORTED AT SQUAW VALLEY SKI RESORT. |
| Feb 27, 8:00 AM PST | SNOW 3 | Incline Village, NV | 3 INCHES OF SNOWFALL REPORTED IN THE PAST 24 HOURS. 10 INCHES IN THE PAST 48 HOURS. ELEVATION 6356 FEET. |
| Feb 27, 8:00 AM PST | SNOW 12 | 1 Nnw Homewood, CA | 12 INCHES OF SNOWFALL REPORTED IN 24 HOURS. ELEVATION 6350. |
| Feb 27, 10:50 AM PST | SNOW 6 | Tahoe City, CA | 6 INCHES OF NEW SNOWFALL REPORTED IN THE PAST 24 HOURS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Reno, NV (KREV), launched 12:00Z, 8.5 hours before the alert went out and 184 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
- 1600 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 222 m²/s²
- 0-3 km storm-relative helicity
- 317 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
954 WWUS45 KREV 242027 WSWREV URGENT - WINTER WEATHER MESSAGE National Weather Service Reno NV 1227 PM PST Sun Feb 24 2019 CAZ072-NVZ002-260000- /O.UPG.KREV.WS.A.0008.190225T1800Z-190227T1800Z/ /O.NEW.KREV.WS.W.0007.190225T1800Z-190228T1200Z/ Greater Lake Tahoe Area- Including the cities of South Lake Tahoe, Truckee, Stateline, and Incline Village 1227 PM PST Sun Feb 24 2019 ...WINTER STORM WARNING IN EFFECT FROM 10 AM MONDAY TO 4 AM PST THURSDAY... * CHANGES...Upgraded to a Winter Storm Warning. Increased expected snow amounts. * WHAT...Heavy snow expected. 3-Day storm total snow accumulation of 2 to 4 feet, except 4 to 8 feet above 7000 feet expected. Winds gusting as high as 60 mph with gusts over 140 mph for the Sierra ridges. Periods of white-out conditions are likely. * WHERE...Greater Lake Tahoe Area. * WHEN...From 10 AM Monday to 4 AM PST Thursday. * ADDITIONAL DETAILS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. Very strong winds could cause extensive tree damage and periods of white-out conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid travel if possible, you could be stuck in your vehicle for many hours. If you must travel, prepare for long delays and carry an emergency kit with extra food, water and clothing. If you stay home, have a backup plan in case of power outages. The latest road conditions can be obtained by calling 5 1 1. && $$ CAZ071-260000- /O.UPG.KREV.WS.A.0008.190225T1800Z-190227T1200Z/ /O.NEW.KREV.WS.W.0007.190225T1800Z-190228T1200Z/ Lassen-Eastern Plumas-Eastern Sierra Counties- Including the city of Portola 1227 PM PST Sun Feb 24 2019 ...WINTER STORM WARNING IN EFFECT FROM 10 AM MONDAY TO 4 AM PST THURSDAY ABOVE 4500 FEET... * CHANGES...Upgraded to a Winter Storm Warning. Increased expected snow amounts. * WHAT...Heavy snow expected above 4500 feet. 3-Day total snow accumulations of up to 18 inches west of Highway 395, except up to 2 to 5 feet above 6000 feet. Winds gusting as high as 65 mph with gusts over 120 mph for the ridges. Periods of white-out conditions are likely. * WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties. * WHEN...From 10 AM Monday to 4 AM PST Thursday. * ADDITIONAL DETAILS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. Very strong winds could cause extensive tree damage and white-out conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid travel if possible, you could be stuck in your vehicle for many hours. If you must travel, prepare for long delays and carry an emergency kit with extra food, water and clothing. If you stay home, have a backup plan in case of power outages. The latest road conditions can be obtained by calling 5 1 1. && $$ CAZ070-NVZ005-260000- /O.NEW.KREV.WW.Y.0016.190226T0600Z-190227T0000Z/ Surprise Valley California-Northern Washoe County- Including the cities of Cedarville, Fort Bidwell, Empire, and Gerlach 1227 PM PST Sun Feb 24 2019 ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM MONDAY TO 4 PM PST TUESDAY... * WHAT...Snow expected. Total snow accumulations of up to 3 inches expected. Winds gusting as high as 65 mph. * WHERE...Surprise Valley California and Northern Washoe County. * WHEN...From 10 PM Monday to 4 PM PST Tuesday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning commute. Very strong winds could cause extensive tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions can be obtained by calling 5 1 1. && $$ CAZ073-260000- /O.NEW.KREV.WW.Y.0016.190226T0000Z-190228T1200Z/ Mono County- Including the cities of Bridgeport, Coleville, and Mammoth Lakes 1227 PM PST Sun Feb 24 2019 ...WINTER WEATHER ADVISORY IN EFFECT FROM 4 PM MONDAY TO 4 AM PST THURSDAY... * WHAT...Snow expected. 3-Day total snow accumulations of up to 12 inches, except 2 to 4 feet above 7000 feet expected. Winds gusting as high as 70 mph with gusts over 140 mph for the Sierra ridges. Periods of white-out conditions are possible. * WHERE...Mono County. * WHEN...From 4 PM Monday to 4 AM PST Thursday. * ADDITIONAL DETAILS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. Very strong winds could cause extensive tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions can be obtained by calling 5 1 1. && $$ Hoon http://www.weather.gov/reno
4 follow-up statements
856 WWUS45 KREV 252247 WSWREV URGENT - WINTER WEATHER MESSAGE National Weather Service Reno NV 247 PM PST Mon Feb 25 2019 CAZ072-NVZ002-270000- /O.CON.KREV.WS.W.0007.000000T0000Z-190228T1200Z/ Greater Lake Tahoe Area- Including the cities of South Lake Tahoe, Truckee, Stateline, and Incline Village 247 PM PST Mon Feb 25 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST THURSDAY... * CHANGES...No changes. * WHAT...Heavy snow expected. 3-Day storm total snow accumulation of 2 to 4 feet, except 4 to 8 feet above 7000 feet expected. Winds gusting as high as 60 mph with gusts over 100 mph for the Sierra ridges. Periods of white-out conditions are likely. * WHERE...Greater Lake Tahoe Area. * WHEN...Through 4 AM PST Thursday. * ADDITIONAL DETAILS...Travel could be very difficult to impossible. The hazardous conditions will impact the morning and evening commutes. Very strong winds could cause extensive tree damage and periods of white-out conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid travel if possible, you could be stuck in your vehicle for many hours. If you must travel, prepare for long delays and carry an emergency kit with extra food, water and clothing. If you stay home, have a backup plan in case of power outages. The latest road conditions can be obtained by calling 5 1 1. && $$ CAZ071-270000- /O.CON.KREV.WS.W.0007.000000T0000Z-190228T1200Z/ Lassen-Eastern Plumas-Eastern Sierra Counties- Including the city of Portola 247 PM PST Mon Feb 25 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST THURSDAY ABOVE 4500 FEET... * CHANGES...No changes. * WHAT...Heavy snow expected above 4500 feet. 3-Day total snow accumulations of up to 18 inches west of Highway 395, except up to 2 to 5 feet above 6000 feet. Winds gusting as high as 65 mph with gusts over 100 mph for the ridges. Periods of white- out conditions are likely. * WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties. * WHEN...Through 4 AM PST Thursday. * ADDITIONAL DETAILS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. Very strong winds could cause extensive tree damage and white-out conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid travel if possible, you could be stuck in your vehicle for many hours. If you must travel, prepare for long delays and carry an emergency kit with extra food, water and clothing. If you stay home, have a backup plan in case of power outages. The latest road conditions can be obtained by calling 5 1 1. && $$ CAZ073-270000- /O.EXT.KREV.WW.Y.0016.190226T0600Z-190228T1200Z/ Mono County- Including the cities of Bridgeport, Coleville, and Mammoth Lakes 247 PM PST Mon Feb 25 2019 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 10 PM THIS EVENING TO 4 AM PST THURSDAY... * CHANGES...Moved the advisory back to 10 PM. High wind warning in effect until 10 PM. * WHAT...Snow expected. 3-Day total snow accumulations of up to 12 inches, except 2 to 4 feet above 7000 feet expected. Winds gusting as high as 70 mph with gusts over 100 mph for the Sierra ridges. Periods of white-out conditions are possible. * WHERE...Mono County. * WHEN...From 10 PM Monday to 4 AM PST Thursday. * ADDITIONAL DETAILS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning and evening commutes. Very strong winds could cause extensive tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions can be obtained by calling 5 1 1. && $$ CAZ070-NVZ005-270000- /O.CON.KREV.WW.Y.0016.190226T0600Z-190227T0000Z/ Surprise Valley California-Northern Washoe County- Including the cities of Cedarville, Fort Bidwell, Empire, and Gerlach 247 PM PST Mon Feb 25 2019 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 4 PM PST TUESDAY... * CHANGES...None. * WHAT...Snow expected. Total snow accumulations of up to 3 inches expected. Winds gusting as high as 65 mph. * WHERE...Surprise Valley California and Northern Washoe County. * WHEN...From 10 PM Monday to 4 PM PST Tuesday. * ADDITIONAL DETAILS...Plan on slippery road conditions. The hazardous conditions could impact the morning commute. Very strong winds could cause extensive tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions can be obtained by calling 5 1 1. && $$ http://www.weather.gov/reno
341 WWUS45 KREV 261246 WSWREV URGENT - WINTER WEATHER MESSAGE National Weather Service Reno NV 446 AM PST Tue Feb 26 2019 CAZ070-NVZ005-261400- /O.CAN.KREV.WW.Y.0016.000000T0000Z-190227T0000Z/ Surprise Valley California-Northern Washoe County- 446 AM PST Tue Feb 26 2019 ...WINTER WEATHER ADVISORY IS CANCELLED... Little or no snowfall is expected below 5500 feet today for the Surprise Valley and northern Washoe County; therefore, the winter weather advisory is cancelled. $$ CAZ072-NVZ002-271300- /O.CON.KREV.WS.W.0007.000000T0000Z-190228T1200Z/ Greater Lake Tahoe Area- Including the cities of South Lake Tahoe, Truckee, Stateline, and Incline Village 446 AM PST Tue Feb 26 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST THURSDAY... * CHANGES...Changed snowfall totals to additional amounts expected. * WHAT...Heavy snow. Additional snow accumulation of 1 to 2 feet, except 2 to 4 feet above 7000 feet. Winds gusting 30 to 50 mph at times, with gusts over 100 mph for exposed Sierra ridges. Periods of white-out conditions are likely, especially in the higher elevations. * WHERE...Greater Lake Tahoe Area. * WHEN...Through 4 AM PST Thursday. * ADDITIONAL DETAILS...Travel could be very difficult to impossible, especially late Tuesday night and Wednesday morning with snowfall rates of 3 inches per hour possible. Very strong winds could cause tree damage and periods of whiteout conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid travel if possible, you could be stuck in your vehicle for many hours. If you must travel, prepare for long delays and carry an emergency kit with extra food, water and clothing. If you stay home, have a backup plan in case of power outages. The latest road conditions can be obtained by calling 5 1 1. && $$ CAZ071-271300- /O.CON.KREV.WS.W.0007.000000T0000Z-190228T1200Z/ Lassen-Eastern Plumas-Eastern Sierra Counties- Including the city of Portola 446 AM PST Tue Feb 26 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST THURSDAY ABOVE 4500 FEET... * CHANGES...Changed snowfall totals to additional amounts expected. * WHAT...Heavy snow above 4500 feet. Additional snow accumulation of 4 to 10 inches, except 1 to 2 feet above 5500 feet west and southwest of Susanville. Winds gusting 30 to 45 mph. Periods of whiteout conditions are possible. * WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties. * WHEN...Through 4 AM PST Thursday. * ADDITIONAL DETAILS...Travel could be very difficult to impossible, especially late Tuesday evening into Wednesday morning with snowfall rates of 3 inches per hour possible. Periods of strong winds could cause tree damage and whiteout conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid travel if possible, you could be stuck in your vehicle for many hours. If you must travel, prepare for long delays and carry an emergency kit with extra food, water and clothing. If you stay home, have a backup plan in case of power outages. The latest road conditions can be obtained by calling 5 1 1. && $$ CAZ073-271300- /O.CON.KREV.WW.Y.0016.000000T0000Z-190228T1200Z/ Mono County- Including the cities of Bridgeport, Coleville, and Mammoth Lakes 446 AM PST Tue Feb 26 2019 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST THURSDAY... * CHANGES...To mention when widespread snow is expected to start. * WHAT...Snow expected. Light snow, mainly west of Highway 395 north of Lee Vining, will increase in intensity and spread over Mono County late tonight and Wednesday morning. Snow accumulations of 3 to 8 inches above 6000 feet, except 1 to 2 feet above 7000 feet west of Highway 395. Winds gusting as high as 70 mph with gusts over 100 mph for Sierra ridges. Periods of whiteout conditions are possible in snow and blowing snow. * WHERE...Mono County. * WHEN...Through 4 AM PST Thursday. * ADDITIONAL DETAILS...Travel could be very difficult with periodic closures possible for portions of Highway 395. Very strong winds could cause extensive tree damage and hazardous travel for high-profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions can be obtained by calling 5 1 1. && $$ http://www.weather.gov/reno
466 WWUS45 KREV 271225 WSWREV URGENT - WINTER WEATHER MESSAGE National Weather Service Reno NV 425 AM PST Wed Feb 27 2019 CAZ072-NVZ002-281200- /O.CON.KREV.WS.W.0007.000000T0000Z-190228T1200Z/ Greater Lake Tahoe Area- Including the cities of South Lake Tahoe, Truckee, Stateline, and Incline Village 425 AM PST Wed Feb 27 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST THURSDAY... * CHANGES...Update additional snowfall totals and timing details. * WHAT...Periods of moderate to heavy snow. A lull in heavier snowfall is expected from late Wednesday morning into Wednesday evening before heavier snow develops again Wednesday night. Additional snow accumulation of 3 to 8 inches, except 8 to 16 inches above 7000 feet west of Highway 89. Winds gusting up to 45 mph at times, with gusts to around 100 mph for exposed Sierra ridges. * WHERE...Greater Lake Tahoe Area. * WHEN...Through 4 AM PST Thursday. * ADDITIONAL DETAILS...Travel could be very difficult with road closures and long delays, especially Wednesday morning. Roads could become mainly wet for a time Wednesday afternoon and evening before snow-covered roads return Wednesday night. Strong winds could cause tree damage and periods of very low visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid travel if possible, you could be stuck in your vehicle for many hours. If you must travel, prepare for long delays and carry an emergency kit with extra food, water and clothing. If you stay home, have a backup plan in case of power outages. The latest road conditions can be obtained by calling 5 1 1. && $$ CAZ071-281200- /O.CON.KREV.WS.W.0007.000000T0000Z-190228T1200Z/ Lassen-Eastern Plumas-Eastern Sierra Counties- Including the city of Portola 425 AM PST Wed Feb 27 2019 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST THURSDAY ABOVE 4500 FEET... * CHANGES...Update additional snowfall totals. * WHAT...Light to moderate snow above 4500 feet. Additional snow accumulation of 2 to 5 inches, except up to 8 inches above 5500 feet west and southwest of Susanville. Wind gusts up to 35 mph. * WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties. * WHEN...Through 4 AM PST Thursday. * ADDITIONAL DETAILS...Travel could be difficult with long delays possible, especially Wednesday morning. Roads could become mainly wet for a time Wednesday afternoon and evening before snow-covered roads return Wednesday night.Strong winds could cause tree damage and periods of low visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid travel if possible, you could be stuck in your vehicle for many hours. If you must travel, prepare for long delays and carry an emergency kit with extra food, water and clothing. If you stay home, have a backup plan in case of power outages. The latest road conditions can be obtained by calling 5 1 1. && $$ CAZ073-281200- /O.CON.KREV.WW.Y.0016.000000T0000Z-190228T1200Z/ Mono County- Including the cities of Bridgeport, Coleville, and Mammoth Lakes 425 AM PST Wed Feb 27 2019 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST THURSDAY... * CHANGES...Update additional snowfall totals. * WHAT...Light to moderate snow. Snow accumulations up to 4 inches above 6000 feet, except 4 to 10 inches above 7500 feet along and west of Highway 395. Winds gusting to 45 mph with gusts to 90 mph for exposed Sierra ridges. Periods of whiteout conditions are possible in snow and blowing snow. * WHERE...Mono County. * WHEN...Through 4 AM PST Thursday. * ADDITIONAL DETAILS...Travel could be difficult for portions of Highway 395 above 6000 feet. Strong winds could cause tree damage and hazardous travel for high-profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions can be obtained by calling 5 1 1. && $$ http://www.weather.gov/reno
837 WWUS45 KREV 281153 WSWREV URGENT - WINTER WEATHER MESSAGE National Weather Service Reno NV 353 AM PST Thu Feb 28 2019 CAZ072-NVZ002-010000- /O.EXP.KREV.WS.W.0007.000000T0000Z-190228T1200Z/ /O.NEW.KREV.WS.A.0009.190302T0800Z-190303T0200Z/ Greater Lake Tahoe Area- Including the cities of South Lake Tahoe, Truckee, Stateline, and Incline Village 353 AM PST Thu Feb 28 2019 ...WINTER STORM WATCH IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY AFTERNOON... ...WINTER STORM WARNING WILL EXPIRE AT 4 AM PST EARLY THIS MORNING... * CHANGES...Allowed current Warning to expire and issued a Winter Winter Storm Watch for Friday night through Saturday. * WHAT...Heavy snow possible. Total snow accumulations of 6 to 10 inches, except 10 to 20 inches above 7000 feet possible. * WHERE...Greater Lake Tahoe Area. * WHEN...From late Friday night through Saturday afternoon. * ADDITIONAL DETAILS...Travel could be very difficult. The hazardous conditions could impact the morning or evening commute. Strong winds could cause tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... Now is the time to prepare an emergency kit for your home and car. If traveling consider alternate plans, remember to carry tire chains, extra food, water and clothing. Once the storm arrives, travel may be difficult or impossible for an extended period of time. && $$ CAZ071-281300- /O.EXP.KREV.WS.W.0007.000000T0000Z-190228T1200Z/ Lassen-Eastern Plumas-Eastern Sierra Counties- Including the city of Portola 353 AM PST Thu Feb 28 2019 ...WINTER STORM WARNING WILL EXPIRE AT 4 AM PST EARLY THIS MORNING ABOVE 4500 FEET... Heavy snow has ended, a few snow showers will be possible today especially in Plumas and eastern Sierra counties. $$ CAZ073-010000- /O.EXP.KREV.WW.Y.0016.000000T0000Z-190228T1200Z/ /O.NEW.KREV.WS.A.0009.190302T0800Z-190303T0200Z/ Mono County- Including the cities of Bridgeport, Coleville, and Mammoth Lakes 353 AM PST Thu Feb 28 2019 ...WINTER STORM WATCH IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY AFTERNOON... ...WINTER WEATHER ADVISORY WILL EXPIRE AT 4 AM PST EARLY THIS MORNING... * CHANGES...Allowed current Warning to expire and issued a Winter Winter Storm Watch for Friday night through Saturday. * WHAT...Heavy snow possible. Total snow accumulations of 6 to 12 inches, except 1 to 2 feet above 7000 feet possible. Winds could gust as high as 50 mph. * WHERE...Mono County. * WHEN...From late Friday night through Saturday afternoon. * ADDITIONAL DETAILS...Travel could be very difficult. The hazardous conditions could impact the morning or evening commute. Strong winds could cause tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... Now is the time to prepare an emergency kit for your home and car. If traveling consider alternate plans, remember to carry tire chains, extra food, water and clothing. Once the storm arrives, travel may be difficult or impossible for an extended period of time. && $$ http://www.weather.gov/reno
What forecasters said that day
The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Reno, NV wrote its last area forecast discussion before this winter storm warning went out at Feb 24, 4:19 AM PST, 8 hours 8 minutes earlier.
Area forecast discussion, Feb 24, 4:19 AM PST, 8 hours 8 minutes before
Area Forecast Discussion
National Weather Service Reno NV
419 AM PST Sun Feb 24 2019
.SYNOPSIS...
A Pacific storm system begins to move into the region late tonight
and Monday. Ahead of this system light precipitation begins today
in northeast California. Mountain snow and valley rain spreads
south Monday while gusty winds develop east of the Sierra. The
weather remains active through late Wednesday before a brief break
develops. Another storm system brings more rain and snow the
region next weekend.
&&
.SHORT TERM...
A number of changes were made to the short term portion of the
forecast today as the models are showing some signs of starting
to converge on a solution. The bottom line this morning: The ECMWF
is moving more toward a wetter solution that is more in line with
the GFS and FV3. Meanwhile...the GFS is a little slower with the
onset of precipitation late today and tonight and still keeps a
better chance of strong winds east of the Sierra. All of this
leads to an increase in confidence that this will be a wetter
system than was previously advertised. There are still questions.
We will address those below.
Precipitation and Snow Levels: The initial development of
precipitation will be today north of the Tahoe area in northeast
California. Forcing is rather weak with this initial push...so we
do not expect enough in the way of widespread snow to warrant any
advisories for the Lassen/Plumas area. Snow levels should rise to
around 4500 feet today where we expect precipitation.
We really start to see precipitation increase Monday into Monday
evening. The jet is sagging south by then and some of the
Integrated Water Transport tools show an increase in moisture
directed toward northern California from roughly Highway 50 to
near the Oregon border by early Monday evening. Along with this
increase in moisture we do see an increase in snow levels for much
of the area...rising above 5000-6000 feet for all but northeast
California where precipitation intensity may keep snow levels
lower than one would expect in this scenario. That means a mix of
rain and snow in some of the lower valleys of northeast California
in western Lassen County and central Plumas County. With the
ECMWF trending wetter...we have increased both POPs and QPF for
Monday and Monday night in northeast California and the Tahoe
basin.
By early Tuesday the focus of the heaviest precipitation begins to
shift south to mainly the Tahoe basin. By then we start to see
some precipitation developing along the Sierra Crest of Mono
County as well. The precipitation in Mono County looks lighter
through Tuesday than points to the north. We may also begin to see
some spillover late in the day into western Nevada as instability
starts to increase...but spillover chances look to increase after
Tuesday afternoon.
Given the increase in POPs and QPF...we have opted to issue Winter
Storm Watches for northeast California and the Lake Tahoe area
starting late Monday morning and continuing through late Wednesday
morning. Ultimately...this may be a high end advisory scenario...
but snow through this entire time period could cause travel
difficulties.
Winds: This storm looks like a more typical winter storm with
shadowing initially to the east of the Sierra. Forecast soundings
for the Reno area even show a brief period of potential weak
downslope enhancement late Monday afternoon into Monday evening.
This may drive wind gusts in the wind prone areas into the 65-70
mph range for a brief period of time late Monday afternoon.
Because this period of stronger winds is relatively short and
because there is some potential for precipitation to dampen the
winds by Monday evening...but more likely Tuesday...we will issue
a High Wind Watch for just the Sierra Front area and far northwest
Nevada for Monday afternoon and overnight. We would feel better
having the next shift look at the wind potential again to
determine if we need an advisory or warning. At this point an
advisory is more probable...given the shorter duration of the
strongest winds...but we do want more eyes to take a look.
Gusty winds could redevelop Tuesday...but these are more likely to
be dampened somewhat by brief periods of spillover precipitation.
The strongest winds may actually shift to the basin and range
country by then.
While confidence has increased...we must keep in mind this remains
a complex forecast. There is potential for significant variations
in snow levels that could cause snow totals to vary from what we
currently depict. There is also the possibility of stronger winds
in the lee of the Sierra if we get a slowing of the precipitation
moving south and spilling into western Nevada. Further refinement
of the forecast is likely and may result in substantial
differences to that issued this morning.
.LONG TERM...Tuesday night through next weekend...
An active weather pattern will continue through the extended period.
Pacific moisture and a series of shortwaves will move into the
western US Tuesday through Sunday. The only significant changes to
the forecast were to increase POPs and QPF over the central Sierra
crest and eastward into portions of western Nevada for the Tuesday
night through Thursday morning time period. With model guidance
still struggling to come into agreement, especially the
operational GFS and ECMWF, there are likely going to be continued
variations where the highest QPF values will be.
A slow moving shortwave trough will meander over the Pacific
Northwest and southern British Columbia through the middle part
of the week, before dropping south into the Intermountain West
early Friday. A smaller shortwave over the eastern Pacific will
phase with this larger shortwave Tuesday night into Wednesday
morning over the central-northern Sierra, northeastern
California, and western Nevada. This will put these areas within a
favored zone for QG-ascent and allow for increased precipitation
along the Sierra crest and for precipitation to spill over into
western Nevada. Snow levels look be around 5000-6500 feet
throughout much of this event, except for areas of Lassen and
Modoc Counties where they could drop to below 5000 feet early
Wednesday. In regards to snowfall amounts, areas above 7000 feet
could see see a decent chance for 10-20". Below 7000 feet, amounts
will be harder to pinpoint due to the fluctuating nature of snow
levels. A potential range from a couple inches to nearly a foot of
snow are possible.
Strong wind gusts will also be possible Wednesday morning into early
Thursday due to the increased winds at all levels from the phasing
of the southern branch of the polar front and northern branch of the
subtropical jet. Continued onshore flow and increased lift near the
Sierra should lead to another round of moderate to heavy
precipitation Wednesday night into Thursday. Precipitation chances
will decrease Thursday into Friday as the low moves off to the east.
A brief break will take place Friday, before another upper level low
and plume of Pacific moisture enters the west coast Saturday
morning through Sunday. This will likely be a valley rain/mountain
snow event, with snow levels remaining above 5000 feet except for
areas in northeast California-northwest Nevada where snow could
continue until warmer air enters the region. Saturday morning and
mid-day look to be the times for the heaviest precipitation.
-Johnston
&&
.AVIATION...
VFR Conditions are likely through today and we will begin to see
winds increase aloft this morning. That should lead to an increase
in turbulence potential above and downwind of the Sierra. By late
in the day...surface winds begin to increase as well with gusts
approaching 25-30 kts for most of the terminals.
Precipitation moves into northeast California late tonight and
spreads south through Tuesday. This will lower cigs/vsbys and
lead to mountain obscurations for Monday and Tuesday. In the
meantime...surface winds begin to increase in the lee of the
Sierra. Wind gusts at the western Nevada terminals could reach
40-45 kt by late Monday afternoon. In the Sierra...gusts at the
terminals could reach 30-35 kts. This will bring the typical
bouts of turbulence along with low level wind shear early Monday.
Precipitation begins to spill into western Nevada late Tuesday and
could lower cigs/vsbys briefly. Poor conditions continue into
Wednesday before some decrease in winds and precipitation late in
the day.
&&
.REV Watches/Warnings/Advisories...
NV...High Wind Watch from Monday morning through late Monday night
NVZ003-005.
Lake Wind Advisory from 10 AM this morning to 10 AM PST Monday
for Lake Tahoe in NVZ002.
Winter Storm Watch from Monday morning through Wednesday morning
NVZ002.
Lake Wind Advisory from 10 AM this morning to 7 PM PST this
evening for Pyramid Lake in NVZ004.
CA...Winter Storm Watch from Monday morning through late Tuesday
night CAZ071.
Lake Wind Advisory from 10 AM this morning to 10 AM PST Monday
for Lake Tahoe in CAZ072.
Winter Storm Watch from Monday morning through Wednesday morning
CAZ072.
&&
For more information from the National Weather Service visit...
http://weather.gov/renoThe office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 24, 3:22 AM PST | High Wind Watch | REV | Douglas, Lyon, Storey, Washoe | 9 hr |
| Feb 24, 3:22 AM PST | Winter Storm Watch | REV | Douglas, Washoe | 9 hr |
| Feb 24, 12:27 PM PST | Winter Weather Advisory | REV | Washoe | 4 days |
| Feb 24, 12:51 PM PST | High Wind Warning | REV | Douglas, Lyon, Storey, Washoe | 33 hr |
| Feb 24, 12:51 PM PST | Lake Wind Advisory | REV | Churchill, Lyon, Pershing, Washoe | 33 hr |
| Feb 24, 12:51 PM PST | Wind Advisory | REV | Lyon, Mineral, Washoe | 33 hr |
Nearby
Winter Storm Warnings in California, 2019Winter Storm Warnings in Nevada, 2019Every winter storm warning in 2019
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.