Another strong wave associated with a complex storm system over the Northwest spread heavy snow across Eastern Oregon and Western Idaho.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS BOI wrote it up.
Another strong wave associated with a complex storm system over the Northwest spread heavy snow across Eastern Oregon and Western Idaho.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Boise, ID wrote its last area forecast discussion before the first event at Feb 10, 9:25 PM MST, 35 minutes earlier.
Area Forecast Discussion
National Weather Service Boise ID
925 PM MST Sun Feb 10 2019
.DISCUSSION...The mult-system winter storm is still on course to
begin tonight with light snow developing across Baker county and
the west-central Idaho and Boise mountains after 06Z tonight,
increasing in intensity after 12Z. In the Snake Plain areas along
the foothills will see snow develop between 09Z and 11Z Monday
morning. In this area, still looking at a sharp gradient in the
snowfall with accumulating snow remaining along or north of
Interstate 84. The best chance for snow in the lower valleys is
through mid-morning, though it may continue in the foothills into
early afternoon. Have adjusted the timing of the Advisory to
match. Also have removed the wind wording as the strongest winds
will be in the drier air south of the Snake River. Have updated
forecast to adjust precipitation chances, QPF and snow amounts
through Monday.
&&
.AVIATION...VFR through the rest of the evening into the night for
most locations. Incoming snow showers early Monday morning will
cause MVFR/IFR conditions with mountain obscurations. Much of the
showers will be confined north of a KBNO-KJER line for higher
elevations. Surface winds, southeast-southwest 5-10kts with gusts
of 25-35kts during the afternoon for areas south of the Snake
Plain. Winds aloft to 10k feet MSL, westerly 45-50kts.
&&
.PREV DISCUSSION...
SHORT TERM...Tonight through Wednesday...The next winter storm
will begin snow in Baker County before midnight tonight, and
western Idaho between midnight and 5 AM Monday. Snow will extend
as far south as the Snake Basin, and will likely cause problems
for the morning commuting period at Boise due to snow on the roads,
Snow will continue through at least Wednesday in Baker County and
Idaho north of the Snake Basin under a steady influx of Pacific
moisture. Heavy accumulations are expected, especially on the
Idaho side, with as much as 3 feet in the higher mountains.
Snow will be heaviest Monday and Monday night, lighter Tuesday,
then heavier again Wednesday. Southeast Oregon and southern-
most idaho will be relatively dry through Tuesday but wetter
Wednesday as the main upper trough off the northwest coast comes
fully inland. Gusty winds will cause areas of blowing snow
especially in Harney, Malheur, and Owyhee Counties, but those
areas should have only light accumulations of snow. Temperatures
will be colder tonight, then milder through Wednesday, but not as
warm as MAV guidance. Snow may mix with rain Wednesday at lowest
elevations in the south.
LONG TERM...Wednesday night through Friday...
After a slight deviation from the ECM yesterday, the extended models
are all in good agreement by indicating continued wintry pattern
extending into Thursday as the upper low slides through the region
Wednesday night and Thursday. Breezy conditions expected behind the
trough Thursday. Models all build an upper ridge (briefly) Thursday
night and into Friday morning before yet another upper low pushes
into the PacNW. Temperatures remaining below normal for the end of
the week.
Friday night through Sunday night. Snow showers, breezy, and cold
through the period in a complex, progressive pattern. Subtropical
Pacific moisture will spread over our area as an upper trough off
the Northwest coast comes inland. With cold air in place and
abundant moisture present, look for snow showers to persist across
the region the entire period, heaviest in the mountains. High
temperatures are expected to measure in around 5 to 10 degrees below
normal, while lows drop down to around 5 degrees below normal.
&&
.BOI WATCHES/WARNINGS/ADVISORIES...
ID...Winter Storm Warning until 5 PM MST Wednesday IDZ011-013-028-033.
Winter Weather Advisory from 3 AM to 1 PM MST Monday IDZ014-016.
OR...Winter Storm Warning until 4 PM PST Wednesday ORZ062.
&&
www.weather.gov/Boise
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DISCUSSION...DG
AVIATION.....JC
PREV SHORT TERM...LC
PREV LONG TERM....CR/WHThe national radar mosaic for the moment the first event began.
1 heavy snow. Local standard time, as filed.
Trained spotters reported 10 to 13 inches of new snow around Halfway and 5 to 7 inches around Baker City.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2019Every state in 2019This day in weather historyWarnings in Oregon, February 2019
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 810578.