Alert archive / California / Winter Storm Warnings in 2021
Winter Storm Warning 4, NWS Las Vegas, NV
NWS Las Vegas, NV issued this winter storm warning at Oct 23, 2021, 2:07 PM PDT for Inyo County, California. It took effect at Oct 24, 2021, 11:00 PM PDT. It was in force for 23 hr. 2 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
- Oct 23, 2021, 2:07 PM PDT (21:07 UTC)
- In effect from
- Oct 24, 2021, 11:00 PM PDT
- Expired
- Oct 25, 2021, 9:46 PM PDT
- In force
- 23 hr
- Issued by
- NWS Las Vegas, NV
County Inyo County, CA
The radar
The Edwards AFB radar (KEYX), 158 km from the middle of the area, began a volume at 21:06 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 |
|---|---|---|---|
| Oct 25, 3:00 PM PDT | HEAVY SNOW 10 | Aspendell, CA | SNOWFALL BEGAN AT 0845 PDT AND ENDED AT 1430 PDT. TOTAL SNOWFALL ACCUMULATION OF 10 INCHES. REPORTED BY CARDINAL VILLAGE RESORT. |
| Oct 25, 7:20 PM PDT | SNOW 11.3 | Aspendell, CA | SNOW BEGAN AT 0900 AND ENDED AT 1315. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Las Vegas, NV (KVEF), launched 12:00Z, 9.1 hours before the alert went out and 168 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
- 1914 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 171 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
357 WWUS45 KVEF 232107 WSWVEF URGENT - WINTER WEATHER MESSAGE National Weather Service Las Vegas NV 207 PM PDT Sat Oct 23 2021 CAZ519-241000- /O.UPG.KVEF.WS.A.0003.211025T0000Z-211026T0600Z/ /O.NEW.KVEF.WS.W.0004.211025T0600Z-211026T0600Z/ Eastern Sierra Slopes- Including Aspendell 207 PM PDT Sat Oct 23 2021 ...WINTER STORM WARNING IN EFFECT ABOVE 9000 FEET FROM 11 PM SUNDAY TO 11 PM PDT MONDAY... * WHAT...Heavy snow expected. Total snow accumulations of 1 to 2 feet on the high passes and peaks. Winds gusting as high as 55 mph. * WHERE...Eastern Sierra Slopes above 9000 feet. * WHEN...From 11 PM Sunday to 11 PM PDT Monday. * IMPACTS...The early season heavy snow will make hiking dangerous or impossible in the high southern Sierra Sunday night into Monday. Roads above 9000 feet will become impassable. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. Cancel or reschedule any late weekend hiking plans into the high Sierra and continue to monitor the latest forecasts. && $$ For more information from the National Weather Service visit https://weather.gov/lasvegas
5 follow-up statements
954 WWUS45 KVEF 240927 WSWVEF URGENT - WINTER WEATHER MESSAGE National Weather Service Las Vegas NV 227 AM PDT Sun Oct 24 2021 CAZ519-242300- /O.CON.KVEF.WS.W.0004.211025T0600Z-211026T0600Z/ Eastern Sierra Slopes- Including Aspendell 227 AM PDT Sun Oct 24 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 11 PM PDT MONDAY... * WHAT...Heavy snow expected. Total snow accumulations of 1 to 2 feet on the high passes and peaks. Highest peaks could reach 3 feet. Southwest winds gusting as high as 55 mph. * WHERE...Eastern Sierra Slopes above 9000 feet. * WHEN...From 11 PM Sunday to 11 PM PDT Monday. * IMPACTS...The early season heavy snow will make hiking dangerous or impossible in the high southern Sierra Sunday night into Monday. Roads above 9000 feet will become impassable. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. Cancel or reschedule any late weekend hiking plans into the high Sierra and continue to monitor the latest forecasts. && $$ For more information from the National Weather Service visit https://weather.gov/lasvegas
273 WWUS45 KVEF 242215 WSWVEF URGENT - WINTER WEATHER MESSAGE National Weather Service Las Vegas NV 315 PM PDT Sun Oct 24 2021 CAZ519-251015- /O.CON.KVEF.WS.W.0004.211025T0600Z-211026T0600Z/ Eastern Sierra Slopes- Including Aspendell 315 PM PDT Sun Oct 24 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 11 PM PDT MONDAY... * WHAT...Heavy snow expected. Total snow accumulations of 1 to 2 feet on the high passes and peaks. Highest peaks could reach 3 feet. Southwest winds gusting as high as 55 mph. * WHERE...Eastern Sierra Slopes above 9000 feet. * WHEN...From 11 PM this evening to 11 PM PDT Monday. * IMPACTS...The early season heavy snow will make hiking dangerous or impossible in the high southern Sierra Sunday night into Monday. Roads above 9000 feet will become impassable. PRECAUTIONARY/PREPAREDNESS ACTIONS... Cancel or reschedule any plans until after Monday to venture into the high Sierra above 9000 feet. && $$ For more information from the National Weather Service visit https://weather.gov/lasvegas
951 WWUS45 KVEF 250949 WSWVEF URGENT - WINTER WEATHER MESSAGE National Weather Service Las Vegas NV 249 AM PDT Mon Oct 25 2021 CAZ519-252300- /O.CON.KVEF.WS.W.0004.000000T0000Z-211026T0600Z/ Eastern Sierra Slopes- Including Aspendell 249 AM PDT Mon Oct 25 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING... * WHAT...Heavy snow expected. Total snow accumulations of 1 to 2 feet on the high passes and peaks. Highest peaks could reach 3 to 4 feet. Southwest winds gusting as high as 55 mph. * WHERE...Eastern Sierra Slopes above 9000 feet. * WHEN...From 11 PM this evening to 11 PM PDT Monday. * IMPACTS...The early season heavy snow will make hiking dangerous or impossible in the high southern Sierra Sunday night into Monday. Roads above 9000 feet will become impassable. PRECAUTIONARY/PREPAREDNESS ACTIONS... Cancel or reschedule any plans until after Monday to venture into the high Sierra above 9000 feet. && $$ For more information from the National Weather Service visit https://weather.gov/lasvegas
443 WWUS45 KVEF 252254 WSWVEF URGENT - WINTER WEATHER MESSAGE National Weather Service Las Vegas NV 354 PM PDT Mon Oct 25 2021 CAZ519-260600- /O.CON.KVEF.WS.W.0004.000000T0000Z-211026T0600Z/ Eastern Sierra Slopes- Including Aspendell 354 PM PDT Mon Oct 25 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING... * WHAT...Heavy snow expected. Snow totals between 1 to 2 feet can be expected. Winds gusting as high as 55 mph. Some of the highest peaks could see over 2 feet of snow. * WHERE...Eastern Sierra slopes above 8000 feet. * WHEN...Until 11 PM PDT this evening. * IMPACTS...The early season heavy snow will make hiking dangerous or impossible in the high southern Sierra Sunday night into Monday. Roads above 8000 feet will become impassable. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning for snow means severe winter weather conditions will make travel very hazardous or impossible. If you must travel, keep an extra flashlight, food and water in your vehicle in case of an emergency. The latest road conditions can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit https://weather.gov/lasvegas
294 WWUS45 KVEF 260446 WSWVEF URGENT - WINTER WEATHER MESSAGE National Weather Service Las Vegas NV 946 PM PDT Mon Oct 25 2021 CAZ519-260600- /O.CAN.KVEF.WS.W.0004.000000T0000Z-211026T0600Z/ Eastern Sierra Slopes- 946 PM PDT Mon Oct 25 2021 ...WINTER STORM WARNING IS CANCELLED... The system that brought heavy snowfall to the eastern Sierra has concluded and no additional impacts are expected. Therefore, the Winter Storm Warning has been cancelled. $$ For more information from the National Weather Service visit https://weather.gov/lasvegas
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 23, 2:14 PM PDT | Wind Advisory | VEF | Inyo, San Bernardino | 54 hr |
Nearby
Winter Storm Warnings in California, 2021Every winter storm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.