Spokane, Washington Weather Conditions

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Current Conditions

  • 46°
  • Overcast
  • Wind: South 8 mph
  • Humidity: 100%
  • Visibility: 1.8 miles
  • Dew Point: 46°
  • Pressure: 29.76 in. -
  • Heat Index: 42

Nowcast

  • Now as of 9:41 am PDT on October 31, 2014

    Areas of fog will continue to develop on the West Plains of Spokane and in the upper Columbia Basin an portions of the Palouse through the remainder of the morning. Primary areas of concern will be along Highway 2 from Davenport to Spokane...along Interstate 90 between Ritzville and Spokane and along Highway 195 near Pullman. Fog will become dense at times with visibility down to one quarter mile. Morning commuters should use low beam headlights and reduce speeds when traveling in foggy conditions.

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Click a section below for more information.

Next 12 Hours

11  am
2  pm
5  pm
8  pm
11  pm
Rain
Rain
Rain
Rain
Rain
Rain
Rain
Rain
Chance of Rain
Chance of Rain
50°
54°
52°
48°
45°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Rain
  • High: 59 °
  • Low: 41 °
  • Rain
  • Saturday
  • Chance of Rain
  • High: 48 °
  • Low: 32 °
  • Chance of Rain
  • Sunday
  • Mostly Cloudy
  • High: 46 °
  • Low: 36 °
  • Mostly Cloudy
  • Monday
  • Chance of Rain
  • High: 50 °
  • Low: 39 °
  • Chance of Rain
  • Tuesday
  • Chance of Rain
  • High: 52 °
  • Low: 39 °
  • Chance of Rain

Forecast for Spokane, Washington

Updated: 8:00 AM PDT on October 31, 2014

  • Friday

    Overcast with rain. High of 59F. Winds from the SSW at 5 to 10 mph. Chance of rain 60%.

  • Friday Night

    Overcast with rain, then a chance of rain after midnight. Fog overnight. Low of 41F. Winds from the SW at 5 to 10 mph. Chance of rain 60%.

  • Saturday

    Overcast with a chance of rain. Fog early. High of 48F. Winds from the West at 5 to 10 mph. Chance of rain 20%.

  • Saturday Night

    Partly cloudy. Low of 32F. Winds from the WSW at 5 to 10 mph.

  • Sunday

    Mostly cloudy. Fog early. High of 46F. Winds from the SSW at 5 to 10 mph.

  • Sunday Night

    Clear. Low of 36F. Winds less than 5 mph.

  • Monday

    Partly cloudy in the morning, then overcast with a chance of rain. High of 50F. Winds from the SE at 5 to 10 mph. Chance of rain 40%.

  • Monday Night

    Overcast with a chance of rain. Fog overnight. Low of 39F. Winds from the South at 5 to 15 mph. Chance of rain 70% with rainfall amounts near 0.5 in. possible.

  • Tuesday

    Overcast with a chance of rain. High of 52F. Winds from the South at 10 to 15 mph. Chance of rain 50%.

  • Tuesday Night

    Overcast with a chance of rain. Low of 39F. Winds from the South at 5 to 10 mph. Chance of rain 60% with rainfall amounts near 0.4 in. possible.

  • Wednesday

    Overcast with a chance of rain. Fog early. High of 54F. Winds from the SSW at 10 to 15 mph. Chance of rain 40%.

  • Wednesday Night

    Mostly cloudy with a chance of rain. Fog overnight. Low of 43F. Winds from the SSE at 5 to 10 mph shifting to the East after midnight. Chance of rain 50%.

  • Thursday

    Mostly cloudy with a chance of rain. High of 57F. Breezy. Winds from the SSE at 5 to 25 mph. Chance of rain 40%.

  • Thursday Night

    Partly cloudy. Low of 39F. Breezy. Winds from the SSW at 10 to 20 mph.

  • Friday

    Partly cloudy. High of 52F. Breezy. Winds from the SW at 10 to 20 mph.

  • Friday Night

    Partly cloudy. Low of 34F. Winds less than 5 mph.

  • Saturday

    Partly cloudy. High of 45F. Winds less than 5 mph.

  • Saturday Night

    Partly cloudy with a chance of rain. Low of 34F. Winds less than 5 mph. Chance of rain 20%.

  • Sunday

    Mostly cloudy with a chance of rain. High of 45F. Winds less than 5 mph. Chance of rain 20%.

  • Sunday Night

    Partly cloudy with a chance of rain. Fog overnight. Low of 36F. Winds less than 5 mph. Chance of rain 20%.

  • Monday

    Partly cloudy with a chance of rain. Fog early. High of 45F. Winds less than 5 mph. Chance of rain 40%.

  • Monday Night

    Clear. Fog overnight. Low of 36F. Winds less than 5 mph.

Severe Weather Alert Descriptions

 Public Information Statement  Statement as of 9:22 am PDT on October 31, 2014



... ... ... ... .24 hour precipitation reports... ... ... ... .

Location amount time/date

... Idaho...

... Bonner...
Bear Mountain (5400 ft) 0.10 in 0800 am 10/31
4 W hope (2237 ft) 0.03 in 0901 am 10/31
6 SW Dover (2349 ft) 0.02 in 0800 am 10/31
Cocolalla (2398 ft) 0.02 in 0902 am 10/31
5 W Colburn (6352 ft) 0.02 in 0855 am 10/31
Priest Lake RAWS (2600 ft) 0.01 in 0808 am 10/31
9 NW Coolin (2631 ft) 0.01 in 0845 am 10/31

... Boundary...
Saddle Pass RAWS (5120 ft) 0.04 in 0807 am 10/31
8 WSW Eastport (2958 ft) 0.01 in 0622 am 10/31

... Kootenai...
1 NE Hayden Lake (735 ft) 0.02 in 0700 am 10/31
Bayview model basin (2072 ft) 0.02 in 0800 am 10/31
1 NW Hayden (705 ft) 0.01 in 0700 am 10/31
Hayden Lake (2291 ft) 0.01 in 0700 am 10/31
3 ENE Post Falls (2224 ft) 0.01 in 0903 am 10/31
Post Falls (2154 ft) 0.01 in 0845 am 10/31

... Shoshone...
sunset (5540 ft) 0.10 in 0800 am 10/31
Mosquito Ridge (5200 ft) 0.10 in 0800 am 10/31
Mica creek (4750 ft) 0.10 in 0800 am 10/31
1 E Kellogg (2298 ft) 0.02 in 0700 am 10/31
Prichard 3 ESE (2547 ft) 0.02 in 0700 am 10/31

... Washington...

... Adams...
Ritzville (1862 ft) 0.02 in 0700 am 10/31

... Asotin...
Sourdough Gulch (4000 ft) 0.10 in 0800 am 10/31

... Chelan...
Trinity snotel (2930 ft) 1.40 in 0800 am 10/31
Pope Ridge (3540 ft) 1.20 in 0800 am 10/31
upper Wheeler (4400 ft) 1.10 in 0800 am 10/31
1 NW Peshastin (1027 ft) 1.10 in 0815 am 10/31
2 ENE Leavenworth (1308 ft) 1.04 in 0720 am 10/31
2 NW Manson (1282 ft) 1.01 in 0900 am 10/31
Lyman Lake (5900 ft) 1.00 in 0800 am 10/31
Slide Ridge nr Manson 0.99 in 0850 am 10/31
5 N Ardenvoir (2825 ft) 0.99 in 0842 am 10/31
Holden Village (3218 ft) 0.94 in 0820 am 10/31
Oklahoma Gulch nr Entiat 0.93 in 0900 am 10/31
above Mission Creek nr wenatch 0.92 in 0900 am 10/31
4 NNW Entiat (2465 ft) 0.92 in 0824 am 10/31
Camp four RAWS (3156 ft) 0.92 in 0826 am 10/31
Park Creek Ridge (4600 ft) 0.90 in 0800 am 10/31
Entiat (795 ft) 0.89 in 0825 am 10/31
3 W Telma (3695 ft) 0.83 in 0804 am 10/31
Dry Creek RAWS (3661 ft) 0.80 in 0837 am 10/31
3 WNW Chelan (1148 ft) 0.72 in 0901 am 10/31
no canyon nr Wenatchee (3) 0.71 in 0900 am 10/31
Chelan (1099 ft) 0.70 in 0800 am 10/31
1 NNW plain (1881 ft) 0.70 in 0700 am 10/31
8 SW Wenatchee (2591 ft) 0.65 in 0834 am 10/31
Peavine Canyon nr Wenatchee 0.64 in 0900 am 10/31
Telma (2005 ft) 0.60 in 0815 am 10/31
Pitcher Canyon nr Wenatchee 0.58 in 0900 am 10/31
2 NW Wenatchee (961 ft) 0.56 in 0856 am 10/31
Stehekin-airstrip RAWS 0.54 in 0801 am 10/31
3 N plain (1998 ft) 0.53 in 0903 am 10/31
3 se Chelan (744 ft) 0.51 in 0528 am 10/31
2 NE Manson (1972 ft) 0.04 in 0800 am 10/31

... Douglas...
Waterville (2664 ft) 0.65 in 0800 am 10/31
1 N East Wenatchee (851 ft) 0.59 in 0700 am 10/31
2 NNE East Wenatchee (1424 ft) 0.57 in 0700 am 10/31
1 SSE East Wenatchee (785 ft) 0.55 in 0700 am 10/31
2 E East Wenatchee (1183 ft) 0.44 in 0700 am 10/31
Wenatchee ap (1229 ft) 0.40 in 0455 am 10/31
Douglas RAWS (2529 ft) 0.37 in 0848 am 10/31
chief Joseph dam (834 ft) 0.13 in 0100 am 10/31
1 ESE Bridgeport (996 ft) 0.01 in 0800 am 10/31

... Ferry...
4 SW Malo (2438 ft) 0.18 in 0800 am 10/31
Brown Mountain Orchard RAWS 0.18 in 0856 am 10/31
Iron Mountain RAWS (4350 ft) 0.16 in 0804 am 10/31
Lane creek RAWS (4430 ft) 0.12 in 0858 am 10/31
4 W Boyds (3315 ft) 0.11 in 0700 am 10/31
Sentinel Butte (4920 ft) 0.10 in 0800 am 10/31
Owl Mountain RAWS (3560 ft) 0.08 in 0856 am 10/31
Gold Mountain RAWS (4686 ft) 0.07 in 0811 am 10/31

... Garfield...
Spruce Springs (5700 ft) 0.20 in 0800 am 10/31

... Grant...
Quincy 1 S (1274 ft) 0.14 in 0738 am 10/31
Desert Aire (538 ft) 0.11 in 0901 am 10/31
Ephrata Airport ASOS (1259 ft) 0.04 in 0453 am 10/31
Saddle Mountain RAWS (633 ft) 0.04 in 0830 am 10/31
1 ESE Moses Lake (1165 ft) 0.02 in 0902 am 10/31
Grant County Airport (1189 ft) 0.02 in 0452 am 10/31

... Lincoln...
Spring Canyon RAWS (1339 ft) 0.09 in 0837 am 10/31
Almira hydromet station 0.03 in 0830 am 10/31
Swanson Lakes wildlife area 0.02 in 0700 am 10/31

... Okanogan...
Salmon Meadows (4500 ft) 0.90 in 0800 am 10/31
leecher RAWS (4991 ft) 0.87 in 0825 am 10/31
ncsb - N Cascade smoke jumpers 0.69 in 0806 am 10/31
Conconully dam and Reservoir N 0.67 in 0845 am 10/31
4 W Methow (3566 ft) 0.66 in 0806 am 10/31
3 S Winthrop (1876 ft) 0.64 in 0853 am 10/31
5 S Loomis (5185 ft) 0.62 in 0809 am 10/31
First Butte RAWS (5509 ft) 0.62 in 0836 am 10/31
4 N Winthrop (2050 ft) 0.61 in 0859 am 10/31
4 WNW Winthrop (2863 ft) 0.57 in 0700 am 10/31
3 se Winthrop (2202 ft) 0.52 in 0800 am 10/31
Gold axe Camp snotel (5360 ft) 0.50 in 0800 am 10/31
Moses mtn (5300 ft) 0.50 in 0800 am 10/31
Harts Pass (6500 ft) 0.50 in 0700 am 10/31
Omak Airport (1301 ft) 0.48 in 0453 am 10/31
Oroville RAWS (1450 ft) 0.47 in 0841 am 10/31
Kramer RAWS (2720 ft) 0.41 in 0808 am 10/31
Lost Lake RAWS (3876 ft) 0.34 in 0836 am 10/31
6 se Chesaw (3641 ft) 0.32 in 0857 am 10/31
peony creek RAWS (3804 ft) 0.31 in 0806 am 10/31
Mazama (2106 ft) 0.30 in 0900 am 10/31
Nespelem RAWS (1900 ft) 0.16 in 0857 am 10/31
Nighthawk 2 S (1137 ft) 0.10 in 0830 am 10/31
2 N Okanogan (1233 ft) 0.02 in 0800 am 10/31

... Pend Oreille...
10 E Tiger (5000 ft) 0.30 in 0800 am 10/31
4 NNE Diamond Lake (2545 ft) 0.02 in 0700 am 10/31
Metaline Falls (2099 ft) 0.02 in 0800 am 10/31
Tacoma creek RAWS (3240 ft) 0.02 in 0803 am 10/31

... Spokane...
4 W Mead (2021 ft) 0.03 in 0905 am 10/31
5 W Mead (2382 ft) 0.02 in 0903 am 10/31

... Stevens...
Kettle Falls RAWS (1310 ft) 0.02 in 0837 am 10/31
Wellpinit RAWS (2240 ft) 0.01 in 0808 am 10/31
4 ESE Evans (1935 ft) 0.01 in 0905 am 10/31
4 ENE Rice (2851 ft) 0.01 in 0901 am 10/31
6 S Clayton (2181 ft) 0.01 in 0905 am 10/31

... Whitman...
Colfax (1954 ft) 0.01 in 0700 am 10/31

Observations are collected from a variety of sources with varying
equipment and exposure. Not all data listed are considered official.



Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Sundance Golf Course Area, Nine Mile Falls, WA

Updated: 11:13 AM MST

Temperature: 50.4 °F Dew Point: 48 °F Humidity: 90% Wind: Calm Pressure: 29.64 in Hourly Precipitation: - Windchill: - Graphs

Location: Parkside On The Green, Nine Mile Falls, WA

Updated: 11:13 AM PDT

Temperature: 50.4 °F Dew Point: 49 °F Humidity: 95% Wind: Calm Pressure: 29.65 in Hourly Precipitation: - Windchill: - Graphs

Location: MesoWest SR 2/SR 195 Int. (Garden Springs WA US WA DOT, Spokane, WA

Updated: 10:15 AM PDT

Temperature: 49 °F Dew Point: 48 °F Humidity: 96% Wind: ESE at 2 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: Town and Country, Spokane, WA

Updated: 11:15 AM PDT

Temperature: 49.8 °F Dew Point: 48 °F Humidity: 93% Wind: Calm Pressure: 29.76 in Hourly Precipitation: 0.00 in Windchill: 50 °F Graphs

Location: 5-Mile Prairie Granger Terrace, Spokane, WA

Updated: 11:19 AM PDT

Temperature: 46.8 °F Dew Point: 46 °F Humidity: 98% Wind: SSW at 7.0 mph Pressure: 29.82 in Hourly Precipitation: 0.00 in Windchill: 43 °F Graphs

Location: Four Mound Prairie, Reardan, WA

Updated: 11:19 AM PDT

Temperature: 47.5 °F Dew Point: 47 °F Humidity: 97% Wind: South at 4.5 mph Pressure: 29.95 in Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: Paradise Rim, Spokane, WA

Updated: 11:18 AM PDT

Temperature: 49.8 °F Dew Point: 29 °F Humidity: 45% Wind: Calm Pressure: 27.34 in Hourly Precipitation: 0.00 in Windchill: 50 °F Graphs

Location: Country Homes, Spokane, WA

Updated: 11:15 AM PDT

Temperature: 49.8 °F Dew Point: 48 °F Humidity: 93% Wind: Calm Pressure: 29.77 in Hourly Precipitation: 0.00 in Windchill: 50 °F Graphs

Location: Kensington, Spokane, WA

Updated: 11:18 AM PDT

Temperature: 50.7 °F Dew Point: 42 °F Humidity: 71% Wind: Calm Pressure: 29.76 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Lincoln Heights, Spokane, WA

Updated: 11:18 AM PDT

Temperature: 51.1 °F Dew Point: 47 °F Humidity: 86% Wind: Calm Pressure: 29.74 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Rural Cheney, Cheney, WA

Updated: 11:19 AM PDT

Temperature: 47.9 °F Dew Point: 46 °F Humidity: 93% Wind: Calm Pressure: 29.72 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: South Hill, Spokane, WA

Updated: 11:18 AM PDT

Temperature: 49.5 °F Dew Point: 47 °F Humidity: 92% Wind: SW at 3.0 mph Pressure: 29.74 in Hourly Precipitation: 0.00 in Windchill: 50 °F Graphs

Location: Eastgate, Spokane Valley, WA

Updated: 11:18 AM PDT

Temperature: 51.3 °F Dew Point: 47 °F Humidity: 85% Wind: Calm Pressure: 29.78 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: I-90 & Sprague Ave, Spokane Valley, WA

Updated: 11:18 AM PDT

Temperature: 52.3 °F Dew Point: 45 °F Humidity: 77% Wind: Calm Pressure: 29.71 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Gleneden, Spokane, WA

Updated: 11:13 AM PDT

Temperature: 50.7 °F Dew Point: 48 °F Humidity: 92% Wind: Calm Pressure: 29.44 in Hourly Precipitation: - Windchill: - Graphs

Location: Lower Gleneden, Spokane, WA

Updated: 11:19 AM PDT

Temperature: 50.2 °F Dew Point: 48 °F Humidity: 91% Wind: Calm Pressure: 29.75 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Little Spokane/Shady Slope, Spokane, WA

Updated: 11:18 AM PDT

Temperature: 50.2 °F Dew Point: 48 °F Humidity: 93% Wind: Calm Pressure: 28.89 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Wildrose, Spokane, WA

Updated: 11:18 AM PDT

Temperature: 49.1 °F Dew Point: 41 °F Humidity: 74% Wind: Calm Pressure: 29.73 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: Wellesley @ Argonne, Spokane, WA

Updated: 11:04 AM PDT

Temperature: 50.9 °F Dew Point: 46 °F Humidity: 84% Wind: SSE at 2.0 mph Pressure: 29.68 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: RAWS CHENEY WA US, Cheney, WA

Updated: 10:28 AM PDT

Temperature: 47 °F Dew Point: 46 °F Humidity: 98% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: MesoWest CHENEY WA US UPR, Cheney, WA

Updated: 9:05 AM PDT

Temperature: 47 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: Colbert - Summerwood, Colbert, WA

Updated: 11:11 AM PDT

Temperature: 48.9 °F Dew Point: 48 °F Humidity: 98% Wind: North at - Pressure: 29.70 in Hourly Precipitation: - Windchill: 49 °F Graphs

Location: Broadway Ave, Veradale, WA

Updated: 11:18 AM PDT

Temperature: 51.6 °F Dew Point: 33 °F Humidity: 49% Wind: Calm Pressure: 29.44 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Morningside, Greenacres, WA

Updated: 11:19 AM PDT

Temperature: 50.5 °F Dew Point: 25 °F Humidity: 36% Wind: Calm Pressure: 29.68 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Williams valley, Deer Park, WA

Updated: 11:18 AM PDT

Temperature: 47.1 °F Dew Point: 47 °F Humidity: 99% Wind: Calm Pressure: 29.61 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: Greenacres, Spokane Valley, WA

Updated: 11:15 AM PDT

Temperature: 50.7 °F Dew Point: - Humidity: - Wind: Calm Pressure: 29.76 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: 800 North Vernon Ave, Deer Park, WA

Updated: 11:18 AM PDT

Temperature: 49.5 °F Dew Point: 39 °F Humidity: 68% Wind: Calm Pressure: 27.55 in Hourly Precipitation: 0.00 in Windchill: 50 °F Graphs

Location: MesoWest Wandermere Bridge Spokane WA US WA DOT, Spokane, WA

Updated: 10:15 AM PDT

Temperature: 49 °F Dew Point: 47 °F Humidity: 93% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Spokane Washington 
446 am PDT Friday Oct 31 2014 


Synopsis... 
a slow moving frontal system will pass through the region over 
the next 24 hours. Rain against the Cascades this morning will 
expand east through the day and into tonight. Rain in the Idaho 
Panhandle will likely linger into Sunday morning. Mild and 
unsettled weather is expected to continue into next week. 


&& 


Discussion... 


Today and tonight: no big changes to the fcst as the slow-moving 
north-south frontal boundary currently along the Cascades moves 
east the next 24 hours. Hourly pcpn rates have been around 3-6 
hundredths most sites as a long rich fetch of moisture accompanies 
the front. Of immediate concern is the embedded short-wave now 
over west/cntrl Oregon that will track quickly NE along the frontal/baroclinic 
zone as it crosses into the upper Columbia Basin this morning. It 
will be this wave, along with the speed Max digging south along 
the back side of the trough, that will define the splitting nature 
of the frontal boundary and upper trough by late Fri/early Sat. As 
a result of these two features, we'll see two rounds of pcpn... 
the first today with the short- wave trough lifting NE across ern 
WA, and the second tonight over southeast WA and the cntrl ID Panhandle 
as what's left of the front stalls. Halloween pcpn amnts will be 
tricky, especially for Spokane which will be close to the point at 
which the front splits... between the heaviest rains over nrn WA 
today, and the heaviest pcpn threat for tonight over southeast WA. Right 
now, we're certain that pcpn will fall late afternoon into early 
evening, but it doesn't look like amnts will be more than a tenth 
for Spokane. Stay tuned...bz 


Saturday through sunday: the Idaho Panhandle and extreme eastern fringes 
of Washington can expect wet weather to continue on Saturday as a 
trowal airstream interacts with a departing moist frontal boundary 
along the Idaho/Montana border. Models have been consistent with the idea 
of a deepening low to our southeast and band of moderate to heavy 
precipitation on its western flank but there remains some 
uncertainty how far west this southwest to northeast band of pcpn 
will expand into into ern Washington and far northern reaches of the Idaho 
Panhandle. We are not looking at a huge difference in area, 
roughly a County or two but this will mean a difference in dry or 
wet conditions for locations like Pomeroy...Spokane...Newport...toward 
Bonners Ferry. By far, the wettest conditions will be found in the 
Idaho Panhandle from the I-90 corridor southward and into the blue 
mtns with northwest flow enhancing rainfall amounts in the blue 
mtns and Camas Prairie. Snow levels will range from 6500-7000 feet 
during periods of heaviest precipitation then lower near 4500 feet 
early Sunday morning as precipitation begins to taper off. 
Consequently, we are not anticipated any major travel impacts from 
snow on Lookout Pass. Away from the wet weather over Idaho, dry 
conditions will be common in the Cascades and most of central and 
eastern Washington for much of the weekend. The next storm system will 
spread high clouds late Sunday with rain returning into the 
Cascades by Sunday night. 


Sunday night through friday: an atmospheric river becomes aimed 
at the northwestern US bringing several rounds of precipitation, 
gusty winds, and mild temperatures. Shortwaves tracking along a 
150kt jet oriented roughly from 40n/150w to SW British Columbia 
will waver the fire hose north and south at times but overall, its 
gonna be another wet period. The initial onslaught of 
precipitation will arrive starting Sunday night and continue 
through through Tuesday night. Warm moist isentropic ascent 
spreads into the Cascades Sunday night then east across much of 
ern Washington and nrn Idaho through the day on Monday. A cool front presses 
through Tuesday but has no dynamic support aloft and will mainly 
act to temporarily shut off rain in the Lee of the Cascades as 
midlevel flow becomes more westerly but will have opposite results 
in in the Idaho Panhandle and far eastern reaches of Washington where 
precipitation will likely increase. 


The front and accompanying westerly flow will shove The Tongue 
of moisture into northern Oregon Tuesday night with drier 
conditions continue to expand east across the Columbia Basin. The 
Cascade crest and Idaho Panhandle mtns will not see much of this 
break in shower activity as southwest winds keep the orographic 
shower machine in full effect. A deeper trof will swing east of 
the dateline and buckle the baroclinic region back toward the 
north ahead of a developing warm front. Look for stable rains to 
spread back into much of Washington/Idaho with the heaviest amounts 
continuing to focus along the northern and eastern mountains. The 
trof swings inland Thursday and looks to finally bring an end to 
the fire hose. Models are in decent agreement with the overall 
picture but illustrate vast differences with the strength of the 
trof, degree of splitting, and resultant strength/timing of a cold 
front Thursday afternoon. The GFS is amongst the most compact, 
least splitting models and not only Ushers a strong very windy 
cold front through Thursday but the trof also takes on a strong 
negative tilt and could bring some thunder. The European model (ecmwf) splits the 
energy before reaching the coast and although the reflection of 
the surface low in Alberta is similar, height rises along the 
coast are not to the same degree (due to a secondary low off the 
Oregon/California coast) which supports an increase in winds but near the 
windy scenario depicted on the GFS. We anticipate several more 
variations in the models before we get to the event but it is 
something Worth keeping an eye on; especially if wind is of any 
concern. As for snow levels, the lowest levels of this period will 
be Monday morning with the onset of precipitation. Snow will be 
possible down to 3900 feet across mountains Washington/Idaho but these levels 
will rise through the day and climb above most peaks and all 
mountain passes by afternoon. Snow levels waver some but generally 
remain near 6000 feet or higher until the trof passage late 
Thursday/Friday. /Sb 


&& 


Aviation... 
12z tafs: light rain will continue at keat through this morning 
with IFR conditions. Precipitation and a lower deck will make it 
to kmwh by 17z but conditions are expected to remain VFR. Further 
to the east the remainder of the taf sites will not see 
precipitation begin until aft 20z Friday...again with lowering 
decks with ocnl MVFR. 


&& 


Preliminary point temps/pops... 
Spokane 56 42 48 34 48 35 / 50 60 20 10 10 10 
Coeur D'Alene 58 43 46 34 47 34 / 50 70 70 40 10 10 
Pullman 59 42 46 36 48 37 / 30 80 70 30 10 10 
Lewiston 65 46 48 39 53 38 / 20 80 80 40 10 10 
Colville 55 41 50 32 48 35 / 90 60 10 10 0 10 
Sandpoint 57 41 47 35 46 32 / 50 70 70 40 10 10 
Kellogg 59 41 45 35 44 32 / 20 70 100 60 30 10 
Moses Lake 55 41 54 34 53 38 / 90 20 10 0 0 10 
Wenatchee 55 39 55 37 54 40 / 100 10 0 0 10 20 
Omak 52 37 51 33 51 38 / 90 20 10 10 10 10 


&& 


Otx watches/warnings/advisories... 
Idaho...none. 
Washington...none. 
&& 


$$ 








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Air Pollution Forecast for Spokane

Current Air Quality: Moderate Pollutant: PM2.5
Fri Air Quality: Good Pollutant: PM10
Fri Air Quality: Good Pollutant: CO
Sat Air Quality: Good Pollutant: PM10
Sat Air Quality: Good Pollutant: CO
Sun Air Quality: Good Pollutant: PM10
Sun Air Quality: Good Pollutant: CO
Mon Air Quality: Good Pollutant: PM10
Mon Air Quality: Good Pollutant: CO

Detailed History