sonora pass
- Thread starter catspaw900mc
- Start date
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free real-time govt data
The Natural Resources Conservation Service operates an array of automated remote sensors. One of these is immediately east of the Sierra crest at Leavitt Lake, 9,600'. This link accesses that sensor's info via the Calif Dept of Water Resources data exchange.
http://cdec.water.ca.gov/cgi-progs/q...?s=LVT&d=today
Using the info...
RAW SNO and SNOW DP each head up tabular data for the last 30 days. Click on RAW SNO and get an instant graph of variations in snow water content over the last 30 days. That makes it easy to date the arrival of storm snow (which suddenly increases total water content of the snow pack). Knowing when snow last arrived lets you determine how old the snow surface is, a rough indicator of its 'joy' factor.
If you click SNOW DP, you get a graph of variations in snow depth over the last 30 days. So you can see both how deep the pack is at the sensor and also when it last increased (storm snow). If you look at the SNOW DP graph today, you'll see that the pack has been steadily, slowly shrinking. Looking at the sensor's temperature data, you can tell that the aging snow surface has been subject to repeated melt/freeze.
I will add that this season up in the Leavitt drainage has been somewhat unusual in that a lot of runs have been severely wind-stripped (now exposed rock), and the stripped snow piled up more than usual on the flats. The overall pack is no more than average.
The Natural Resources Conservation Service operates an array of automated remote sensors. One of these is immediately east of the Sierra crest at Leavitt Lake, 9,600'. This link accesses that sensor's info via the Calif Dept of Water Resources data exchange.
http://cdec.water.ca.gov/cgi-progs/q...?s=LVT&d=today
Using the info...
RAW SNO and SNOW DP each head up tabular data for the last 30 days. Click on RAW SNO and get an instant graph of variations in snow water content over the last 30 days. That makes it easy to date the arrival of storm snow (which suddenly increases total water content of the snow pack). Knowing when snow last arrived lets you determine how old the snow surface is, a rough indicator of its 'joy' factor.
If you click SNOW DP, you get a graph of variations in snow depth over the last 30 days. So you can see both how deep the pack is at the sensor and also when it last increased (storm snow). If you look at the SNOW DP graph today, you'll see that the pack has been steadily, slowly shrinking. Looking at the sensor's temperature data, you can tell that the aging snow surface has been subject to repeated melt/freeze.
I will add that this season up in the Leavitt drainage has been somewhat unusual in that a lot of runs have been severely wind-stripped (now exposed rock), and the stripped snow piled up more than usual on the flats. The overall pack is no more than average.
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