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Friday, October 2, 2009
Another round of wind, dropping temps and snow
10/2/09 12:53pm
Great day out there today. Sunny and warm with light breezes. Well, say goodbye to that. Active weather pattern on tap for this first weekend of Rocktober.
Saturday will see a massive increase in winds as an unseasonably strong low pressure system and associated vigorous cold front drops into the region from the North. The low pressure is straight from the party upstairs (some call it Canada) and will drop through WA and OR into NE NV by Sunday. Unfortunately the path of the low is over land, so moisture will be limited. With the help of a 125kt+ jet stream slamming into the Sierra, we will get some snow from this cold front even with the limited moisture. By Saturday night temps will begin to fall as winds will be 20-30mph G50mph at the lake and in Truckee while the TSC will see SW winds gusting to near 100mph. Fire weather concerns understood. The forcing created by the low pressure and the drop in temps will squeeze out all available moisture, leaving us with a few inches of snow at best. More so on the Eastern side of the Sierra. Snow levels look to drop to ~4k on Sunday morn. Reno could even pick up some action other than just blowing dust.
Temperatures on Sunday will top out in the low 40s around North Lake Tahoe. Monday will only be a little better with highs getting to 50F. The models show a cut off low forming and dropping down the CA coast as the parent low lifts off to the East, which could keep a showery pattern going until Wednesday.
PWG
-------------------------------------------------------------------------------------------------
Current NWS Lake Tahoe Forecast
Lake Tahoe Backcountry Forecast
Lake Tahoe Recreational Forecast
Wind Chill Chart
Forecast Links:
National Weather Service Reno
National Weather Service Sacramento
NWS Reno Discussion
NWS Sacramento Discussion
Radar:
Intellicast Reno
Intellicast San Francisco
PacNW
PacSW
Satellite Imagery:
4km IR Loop
16km IR Loop
Central California 1km Visible
GOES-W 12hr WV
GOES NA 24hr WV
Precipitable Water Loop
Past Week's Estimated Precipitation Totals
Forecasting Tools:
Day 1 QPF
Day 2 QPF
Day 3 QPF
Day 4-5 QPF
5 Day Total QPF
California Nevada River Forecast Center
300mb Jetstream Loop
NCEP & HPC Loops Page
Pennsylvania State University Electronic Map Wall
CPC 6-10 Day Outlook
CPC 8-14 Day Outlook
Remote Data:
NWS Reno Local Mountain Remote Data
NWS Surface Observations
Tahoe City
NASA/JPL-UCD Buoys
Truckee Airport
Central Sierra Snow Lab
Sugar Bowl
Squaw Valley GC
Ward Creek
Rubicon
Sonora Pass
Virginia Lakes
Mammoth Mountain Main Lodge
Mammoth Mountain Summit
Reno Airport
Snow Data:
Sierra Avalanche Center
Sierra Avalanche Center Snowpit Profiles and Field Observations
Snowpit Profile Key
Eastern Sierra Avalanche Center
Avalanche.org
California Department of Water Resources
California Snotel Sites
Snotel Narrative
NOAA NOHRSC Interactive Snow Information
NWS Snowpack Analysis
Donner Summit Snowfall History
Brought to you by http://www.porterstahoe.com/
Great day out there today. Sunny and warm with light breezes. Well, say goodbye to that. Active weather pattern on tap for this first weekend of Rocktober.
Saturday will see a massive increase in winds as an unseasonably strong low pressure system and associated vigorous cold front drops into the region from the North. The low pressure is straight from the party upstairs (some call it Canada) and will drop through WA and OR into NE NV by Sunday. Unfortunately the path of the low is over land, so moisture will be limited. With the help of a 125kt+ jet stream slamming into the Sierra, we will get some snow from this cold front even with the limited moisture. By Saturday night temps will begin to fall as winds will be 20-30mph G50mph at the lake and in Truckee while the TSC will see SW winds gusting to near 100mph. Fire weather concerns understood. The forcing created by the low pressure and the drop in temps will squeeze out all available moisture, leaving us with a few inches of snow at best. More so on the Eastern side of the Sierra. Snow levels look to drop to ~4k on Sunday morn. Reno could even pick up some action other than just blowing dust.
Temperatures on Sunday will top out in the low 40s around North Lake Tahoe. Monday will only be a little better with highs getting to 50F. The models show a cut off low forming and dropping down the CA coast as the parent low lifts off to the East, which could keep a showery pattern going until Wednesday.
PWG
-------------------------------------------------------------------------------------------------
Current NWS Lake Tahoe Forecast
Lake Tahoe Backcountry Forecast
Lake Tahoe Recreational Forecast
Wind Chill Chart
Forecast Links:
National Weather Service Reno
National Weather Service Sacramento
NWS Reno Discussion
NWS Sacramento Discussion
Radar:
Intellicast Reno
Intellicast San Francisco
PacNW
PacSW
Satellite Imagery:
4km IR Loop
16km IR Loop
Central California 1km Visible
GOES-W 12hr WV
GOES NA 24hr WV
Precipitable Water Loop
Past Week's Estimated Precipitation Totals
Forecasting Tools:
Day 1 QPF
Day 2 QPF
Day 3 QPF
Day 4-5 QPF
5 Day Total QPF
California Nevada River Forecast Center
300mb Jetstream Loop
NCEP & HPC Loops Page
Pennsylvania State University Electronic Map Wall
CPC 6-10 Day Outlook
CPC 8-14 Day Outlook
Remote Data:
NWS Reno Local Mountain Remote Data
NWS Surface Observations
Tahoe City
NASA/JPL-UCD Buoys
Truckee Airport
Central Sierra Snow Lab
Sugar Bowl
Squaw Valley GC
Ward Creek
Rubicon
Sonora Pass
Virginia Lakes
Mammoth Mountain Main Lodge
Mammoth Mountain Summit
Reno Airport
Snow Data:
Sierra Avalanche Center
Sierra Avalanche Center Snowpit Profiles and Field Observations
Snowpit Profile Key
Eastern Sierra Avalanche Center
Avalanche.org
California Department of Water Resources
California Snotel Sites
Snotel Narrative
NOAA NOHRSC Interactive Snow Information
NWS Snowpack Analysis
Donner Summit Snowfall History
Brought to you by http://www.porterstahoe.com/
// posted by PortersWeatherGuy @ 12:53 PM
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