Seattle.gov Home Page
Seattle Public Utilities Home page

Search Climate Change

January 2017
M T W T F S S
« Dec    
 1
2345678
9101112131415
16171819202122
23242526272829
3031  

The Week Ahead: Cold and Dry

Posted: January 3rd, 2017

New Year’s Day at Chester Morse Lake. At around 125% normal, our snow pack is in very good shape. Photo: AE.

 

Forecast Summary
• Dry and cold, with city-wide lows near 20 degrees and highs near 32 through Thursday.
• Low pressure systems return by Friday, with a possible snow-to-rain scenario on Saturday.
• Extended forecasts suggest cool and wet conditions next week and beyond.

 

Water Supply
• last 7-days precip (USGS): 0.7″ – 1.9″
• snowpack (NRCS, Cedar/Sno/Sky): 17″ SWE, 126% normal
• forecast 7-days precip (NWS/WRF): 1.0″ – 2.0″
• max forecast intensity (NWS): 0.61″/24hrs ending 4pm Sun
• freezing levels (NWS): 1000′ Fri-Sat, to 4000′ on Sun, back under 3000′ by Mon
• forecast 7-day Snow (NWS): 3″ reservoirs, 16″ passes, 16″ ridges
• winds: 20-30mph mountain gap e-lies today through early tomorrow, and again on Sat

 

Drainage and Wastewater
• last 7-days precipitation (ADS): 0.76″ – 0.92″
• forecast 7-days rainfall (NWS/WRF): 0.5″ – 1.0″
• max forecast intensity (NWS): 0.45″/24hrs ending 4pm Sun
• high-intensity, short-duration rainfall is not likely

 

Resources
NWS Area Forecast Discussion
NWS Forecast Tables
Extended Forecast (NAEFS, Select Seattle)
@SPU_WX

 

JRH