1 / 48

Part II Where’s the Snow?

Part II Where’s the Snow?. Idaho Jan 1-31 SNOTEL precipitation ranged from: 45% in Little Wood, Big Lost & Bruneau to 93% in Clearwater & 88% Upper Snake. February 1, 2014 Water Supply Forecasts, Amount Needed & Shortages Based on the 5 Exeedance Forecasts. =. Streamflow Needed.

hilel-mccarty
Download Presentation

Part II Where’s the Snow?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Part II Where’s the Snow?

  2. Idaho Jan 1-31 SNOTEL precipitation ranged from: 45% in Little Wood, Big Lost & Bruneau to 93% in Clearwater & 88% Upper Snake

  3. February 1, 2014 Water Supply Forecasts, Amount Needed & Shortages Based on the 5 Exeedance Forecasts = Streamflow Needed Adequate Supply Reservoir Storage

  4. February 1, 2014 Water Supply Forecasts, Amount Needed & Shortages Based on the 5 Exeedance Forecasts = Streamflow Needed Adequate Supply Reservoir Storage

  5. Idaho SNOTEL Precipitation for Feb 1-12 compared to Feb Total Amounts: Ranges from 40% in North Idaho to 100-139% in Boise, southern, eastern Bear, Upper Snake!

  6. Dry Creek Watershed Jan 26, 2014 Boise Foothills (3,800-4,800 ft) After Two Week Inversion

  7. Bogus Basin SNOTEL 6,340 feet about 7 pm Feb 12, 2014 1.1” of precipitation in 2 days Atlanta Summit SNOTEL 7,580 feet, did not drop below freezing Feb 12 2.5” of precipitation in 2 days Deadwood, Atlanta & Mores Creek: increase about 10” of snow depth Feb 13

  8. 4,890 Payette Basin

  9. 3,200 feet Boise/Mountain Home area

  10. 6,440 feet Big Wood Basin

  11. 7,640 feet Little Wood Basin

  12. 8,330 feet Bruneau Basin

  13. 7,850 feet Yellowstone NP, WY

  14. Web Page Progress is being made since migration last July – let us know about problems. We apologize for this week’s server problems but they were resolved with a new server….

  15. Feb 1 Weiser Snowpack #1 lowest since 1982

  16. As of Feb 11, Weiser is 2nd lowest compared to the March 1 levels

  17. Need ~70%

  18. 1975 & 1986

  19. SFE Probabilistic Forecasting Tool Extreme snowfall events account for about 50% of annual SFE anomalies in this basin. Extreme event over 3 day period 1.7” is 90%ile of events (2.1 avg # events before given date / 1.1 avg # events after given date) Below normal: Above normal:

  20. Near Normal: Learn more at: http://nimbus.cos.uidaho.edu/abby/SFETOOL/

  21. Need ~98%

  22. Need ~103%

  23. Need 27 KAF for Apr-Sep period

  24. Minimal flow needed for Bear Lake users

  25. Need ~50%

  26. January 1, 2014 Water Supply Forecasts, Amount Needed & Shortages based on the 5 Exeedance Forecasts

  27. January 1, 2014 Water Supply Forecasts, Amount Needed & Shortages Based on the 5 Exeedance Forecasts = Streamflow Needed Adequate Supply Reservoir Storage

  28. February 1, 2014 Water Supply Forecasts, Amount Needed & Shortages Based on the 5 Exeedance Forecasts = Streamflow Needed Adequate Supply Reservoir Storage

  29. February 1, 2014 Water Supply Forecasts, Amount Needed & Shortages Based on the 5 Exeedance Forecasts = Streamflow Needed Adequate Supply Reservoir Storage

  30. Think Snow!! • Questions – Comments - Corrections • Not Rain – this week Bogus Basin SNOTEL 6,340 feet ~7 pm Feb 12, 2014

More Related