Heavy snow showers moved the East slopes of the North Cascades overnight on April 11 and into the morning of April 12. 5 inches.
Every event with a place to put it; 3 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 OTX wrote it up.
Heavy snow showers moved the East slopes of the North Cascades overnight on April 11 and into the morning of April 12. The reports of snow ranged between 4 to 9.5 inches. The higher amounts were near the Lake Wenatchee area. Snow showers also impacted Southeast WA and brought travel impacts.
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 Spokane, WA wrote its last area forecast discussion before the first event at Apr 11, 8:58 PM PST, 3 hours 2 minutes earlier.
Area Forecast Discussion
National Weather Service Spokane WA
958 PM PDT Mon Apr 11 2022
.SYNOPSIS...
A cold upper level weather system will remain parked over the
Inland Northwest this week. Blustery northeast winds will ease by
Tuesday. Cold temperatures will result in snow accumulations on
grassy surface at times. Mountain passes may be impacted by winter
travel conditions. Anticipate widespread below freezing overnight
temperatures.
&&
.DISCUSSION...
Update: Ended wind advisories as winds have subsided. Small
circulation slowly moving away to the southeast and the bands of
snow rotating around in it in some portions are showing a tendency
to weaken as well. /Pelatti
&&
.AVIATION...
06z TAFs: Small circulation to slowly move away to the southeast
and the bands of snow rotating around with it are showing
weakening tendencies, there TAFS such as KPUW and KLWS will show
improvement and a trend away from spotty IFR/MVFR due to snow to
more VFR conditions however overcast ceilings of mid cloud will
linger thru the aviation period. Remaining locations will show a
tendency to VFR conditions while maintaining overcast ceilings.
Winds will still prefer to be breezy and gusty from the northeast
until the small circulation moves away tomorrow. /Pelatti
&&
.PRELIMINARY POINT TEMPS/POPS...
Spokane 27 40 25 44 22 43 / 20 10 0 10 10 20
Coeur d'Alene 27 39 24 43 20 44 / 20 10 0 0 10 20
Pullman 25 37 22 40 21 41 / 90 40 10 10 10 30
Lewiston 31 43 26 45 26 45 / 80 50 10 10 10 30
Colville 25 42 24 45 21 45 / 0 10 0 0 0 10
Sandpoint 27 38 23 40 20 42 / 10 10 0 0 10 20
Kellogg 24 35 22 39 20 41 / 20 10 0 10 10 30
Moses Lake 29 45 29 49 28 49 / 0 10 10 10 10 30
Wenatchee 29 43 28 44 29 45 / 10 20 20 20 10 30
Omak 28 44 29 47 26 49 / 0 10 10 10 10 10
&&
.OTX WATCHES/WARNINGS/ADVISORIES...
ID...Winter Weather Advisory until 3 AM PDT Tuesday for Central
Panhandle Mountains.
Winter Storm Warning until 11 AM PDT Tuesday for Lewis and
Southern Nez Perce Counties.
WA...Winter Weather Advisory until 11 AM PDT Tuesday for Northeast
Blue Mountains.
&&Hazardous Weather Outlook National Weather Service Spokane WA 454 AM PDT Mon Apr 11 2022 WAZ047-048-121200- Central Chelan County-Western Chelan County- 454 AM PDT Mon Apr 11 2022 This Hazardous Weather Outlook is for portions of North Central Washington. .DAY ONE...TODAY AND TONIGHT Gusty northeast winds along with snowfall this morning will result in hazardous travel across US 2 Stevens Pass and US 97 Blewett Pass through this afternoon. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY Continued breezy northeast winds on Tuesday. IDZ001-002-004-026-WAZ032-034>038-041-043-044-049-121200- Northern Panhandle-Coeur d'Alene Area-Central Panhandle Mountains- Lewiston Area-Lower Garfield and Asotin Counties-Moses Lake Area- Upper Columbia Basin-Spokane Area-Northeast Mountains- Okanogan Highlands-Wenatchee Area-Okanogan Valley- Waterville Plateau-Western Okanogan County- 454 AM PDT Mon Apr 11 2022 This Hazardous Weather Outlook is for portions of North Idaho... North Central Idaho...Central Washington...East Central Washington...North Central Washington...Northeast Washington and Southeast Washington. .DAY ONE...TODAY AND TONIGHT Gusty northeast winds today with gusts up to 45-50 mph may result in downed trees and isolated power outages. Otherwise no hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY Continued breezy northeast winds on Tuesday. IDZ003-027-WAZ031-033-121200- Idaho Palouse-Lewis and Southern Nez Perce Counties- Northeast Blue Mountains-Washington Palouse- 454 AM PDT Mon Apr 11 2022 This Hazardous Weather Outlook is for portions of North Idaho... North Central Idaho and Southeast Washington. .DAY ONE...TODAY AND TONIGHT There will be gusty northeast winds through this afternoon. In addition, expect 1 to 3 inches of snow this evening which may result in slippery travel along low traveled roads. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY Continued breezy northeast winds on Tuesday.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
851 PM PDT MON APR 11 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0849 PM SNOW PULLMAN 46.72N 117.17W
04/11/2022 M2.3 INCH WHITMAN WA TRAINED SPOTTER
SNOW OCCURRED OFF AND ON MUCH OF THE DAY BUT
DID NOT ACCUMULATE EFFICIENTLY UNTIL ABOUT 5
PM. SPOTTER WHITMAN 65.
&&
GKThe national radar mosaic for the moment the first event began.
3 heavy snow. Local standard time, as filed.
Spotter recorded a snow measurement of 9.5 inches. Several other reports measured in the 6 to 9 inch range.
Observed recorded 4.5 inches of snow at 631LST.
Social media recorded snow amounts around 8 inches.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Washington in 2022Every state in 2022This day in weather historyWarnings in Washington, April 2022
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: 1025571, 1025574, 1025563.