Sunrise 5:40 AM   Sunset 7:50 PM Moonrise 8:00 PM   Moonset 5:27 AM

  Print   HELP   Reset   Save   Recall

FXUS66 KOTX 230923 AFDOTX

Area Forecast Discussion National Weather Service Spokane WA 223 AM PDT Tue Apr 23 2024

SYNOPSIS
Mild and dry weather returns with 60s and 70s for Tuesday and Wednesday. A subtle cooling trend arrives late Wednesday into Thursday with breezy winds and increasing chances for rains.
Unsettled weather continues late through the weekend and early next week with better chances for precipitation across the lowlands.

DISCUSSION
Today: A ridge will dominate the region today as a closed upper- level low moves onshore over northern British Columbia.
Consequently, today will see a temperature increase of 5 to 10 degrees compared to Monday, with highs ranging from the mid-60s to low 70s.

Wednesday: A cold front associated with the British Columbia low will sweep across the Pacific Northwest, keeping precipitation concentrated in the Cascades due to zonal flow aloft. Models indicate a warming trend for Wednesday as moisture from the southwest intensifies, leading to another day of mid-60s to low 70s for highs. Breezy winds pose a very minor risk of blowing dust and grass fires in the Waterville Plateau in the afternoon, where wind gusts exceeding 30 mph have a 50% chance of occurrence.

Thursday through Thursday: Models suggest an active weather pattern persisting through the weekend, with multiple systems traversing the northwestern US. By Thursday afternoon, a surface low will approach the Washington coast, increasing chances for precipitation. Subsequent shortwaves will bring additional rounds of precipitation on Friday and Saturday. There is a 30-70% chance of a wetting rain (a tenth of an inch or more) in the eastern third of WA and a 60-90% chance for the Panhandle through Saturday morning. This will all be beneficial rains.

Model consensus is strengthening for unsettled weather to continue into the following week as a large, occluded low nears the northwest. Global ensembles are generating snowfall for the Cascade passes but marginal air/road temperatures are working against any significant accumulations. There is a 60% chance of 3 inches or more of snow for Stevens Pass Sunday afternoon through Tuesday afternoon. /Butler

AVIATION
06z TAFS: A veil of cirrus clouds will move across the region overnight through Tuesday. Winds will generally be light on Tuesday, but will become breezier on Wednesday from the southwest.

FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: High confidence in VFR conditions.

-----------------------

Confidence descriptors: Low - Less than a 30 percent chance Moderate - 30 to 70 percent chance High - Greater than a 70 percent chance

For additional probabilistic information for NWS Spokane airports, please refer to the Aviation Dashboard on our webpage: https:// www.weather.gov/otx/avndashboard

PRELIMINARY POINT TEMPS/POPS
Spokane 66 40 66 41 61 44 / 0 0 0 0 10 40 Coeur d'Alene 65 39 64 40 58 43 / 0 0 0 0 10 50 Pullman 64 38 63 40 58 43 / 0 0 0 0 10 60 Lewiston 71 45 72 45 66 49 / 0 0 0 0 10 50 Colville 67 34 66 37 61 41 / 0 0 0 0 20 60 Sandpoint 64 38 63 41 56 43 / 0 0 0 0 20 60 Kellogg 64 42 63 43 54 45 / 0 0 0 0 30 50 Moses Lake 70 41 71 41 65 45 / 0 0 0 0 10 20 Wenatchee 68 47 67 44 63 46 / 0 0 0 0 10 20 Omak 68 42 69 42 65 46 / 0 0 0 0 10 50

OTX WATCHES/WARNINGS/ADVISORIES
ID...None.
WA...None.

Full Color Weather Map

Link to Loop


Other links: GEOS-West     Contential US     Full GOES-East

Spokane, WA,