Mid-Week Update

Good afternoon,


Here’s a look at today’s fundamental highlights.



Current Weather Summary

Mid-C shows up with consistently colder than normal aggregate temps over the next 10-day, while NP and SP hover within a degree of average.  Montana looks bitter cold, falling more than 10 degrees below average, while Albuquerque and Salt Lake show the only forecasts above 1 degree from normal.

Current Precip Summary

The forecast remains primarily dry in the west as no stations show an anomaly greater than one inch.  Portland and Seattle gained nearly half an inch day-on-day while Spokane and Western Montana saw their precip forecasts shrink.

Seattle Weather

Seattle is projected to fall into the mid-20’s by early next week, dropping to nine degrees below normal and seven degrees cooler than forecasted yesterday.  Until then, daily lows should stay in the 40’s with a peak of 43 on Friday, seven above normal.

Portland Weather

Portland will get its share of winter-like weather next week as well as temps sink to 27 on the 19th, six below normal.  Lows will climb five degrees over the next two days before welcoming the cold front, eventually leading to a difference of 17 degrees from Friday to Monday.

Spokane Weather

Spokane’s mix of cold weather and decent precip should be enough to add measurable snowpack in the mountains.  Temps will be cold enough to see an uptick in demand as well as temps fall to just 9 degrees on the 19th — 17 below normal and seven degrees cooler than forecasted yesterday.

San Jose Weather

While San Jose’s aggregate forecast showed an anomaly of less than a degree, the 21-day high chart shows than mainly due to offsetting warm and cold days over the next week.  Highs should peak at 72 over the weekend before crashing back to 60 by Tuesday.  Nothing much to drive demand, but still a decent swing in temps.

Sacramento Weather

Move inland a touch and things cool off significantly.  Sacramento will just touch freezing tomorrow with a projected low of 32, nine degrees below normal.  Lows are expected to stay below normal through the 21st, though gradually climb their way closer to average.

Phoenix Weather

It’s a calm and fairly normal forecast in the desert as Phoenix doesn’t vary by more than five degrees through the 21-day forecast.  Highs will dip into the 60’s tomorrow before rising back to the mid-70’s over the weekend.

Burbank Weather

80-degree highs are well in the rearview mirror as 76 sets the high-water mark over the next three weeks.  There is a slight warm-up compared to yesterday’s projections from the 20th-22nd, otherwise Burbank has a stable and relatively average forecast.

Denver Weather

It’s still winter in Denver as tomorrow should see temps fall to 15, five below normal, before rising backing into the 30’s over the weekend.  Next week looks much colder as most nights should see temps fall into the teens.

Salt Lake City Weather

Salt Lake’s mild winter doesn’t show signs of changing as daily lows are forecasted to rise to 42 by the 17th, 16 degrees above normal.  Just one day over the next 10 are projected to fall below average.

Salt Lake’s consistently above-average daily temps illustrated in the chart above have resulted in degree days for January and February to fall 25% and 28.5% respectively.


NWRFC-10 Day Forecast

STP continues to trail behind the 10-Day forecast through each of the 10 days, but especially so today and the beginning of next week.  Very minimal day-on-day changes to the 10-Day forecast with today’s 102 aMW increase being the largest.

Snow Depth Summary

Montana’s maintains its position as the only hub with above-average snow water equivalent at 4″ above normal (26%).  Mid-C falls a half inch short, primarily due to a dry Oregon as all hubs with more than 17k in CMW (Spokane, Pend Oreille, Clark Fork, and Grand Coulee) are at least 2″ above normal.  Oregon Central and Oregon West each fall more than 55% short of average.

Reservoir Levels

Grand Coulee began deviating from the mean on the 8th and has seen its levels fall to 76%, four points from average.

Historically, this puts GCL nearly 10 points lower than the same date last year, though just slightly lower than 2016 and 2015.


NP-15 Loads

Peak demand decreased 70 MW day-on-day yesterday, though daily average demand increased nearly than 300 MW.

SP-15 Loads

Despite peak demand falling 140 MW day-on-day, average daily loads increased nearly 170 MW thanks to off-peak demand rising close to 700 MW.

Mid-C Loads

Average daily Mid-C demand looks like a staircase as loads have increased each of the past five days, eventually leading to average demand at 22,055 yesterday, a week-on-week increase of 2,850 MW.


ISO Renewables

Solar generation fell nearly 1,200 MW week-on-week, though still managed a daily increase of 800 MW.  That’s a far cry from the weekly high set on the 11th at 8,363 MW (6,650 MW yesterday).

Mid-C Wind

Wind was almost nowhere to be seen earlier this week as demand began ramping up.  It made a return earlier today however, peaking at 2,457 MW in the latest hour.  Compare that to yesterday’s high 1,535 in the late hours.



Have a wonderful week,