A cold front brought high winds to the Wenatchee area.
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The episode as NWS OTX wrote it up.
A cold front brought high winds to the Wenatchee area.
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 Jun 17, 2:57 PM PST, 4 hours 38 minutes earlier.
Area Forecast Discussion National Weather Service Spokane WA 357 PM PDT Sat Jun 17 2023 .SYNOPSIS... Breezy conditions will continue through Sunday, with temperatures dropping around ten degrees from values seen on Saturday. A deep and cold upper low will linger over the region through midweek, keeping colder-than-average temperatures and a chance for showers and a few thunderstorms, especially on Tuesday. A gradual warming trend is expected by the end of the work week. && .DISCUSSION... Through Sunday night: Although winds are a bit breezy this afternoon, temperatures are firmly in the pleasant category today, with plenty of sunshine for most of the area. Main exceptions are in portions of the Idaho Panhandle, where a few light showers continue this afternoon (especially near the Canadian border), and in the Cascades, in closest proximity to the next system approaching the area. The attendant trough will push inland this evening, quickly expanding eastward as it digs into much of the Northwest on Sunday. The front associated with this vort max has much colder air upstream, which means temperatures are expected to be several degrees colder on Father's Day. Forecast highs are generally 8 to 13 degrees colder...well below seasonal averages. Winds will ramp up through this evening as the system approaches, particularly in the Cascade gaps and the adjacent Waterville Plateau and lower Columbia Basin. Gusts exceeding 35 mph will be common, and with relative humidity near its diurnal minimum, a window favorable for rapid wildfire spread is apparent. Will be monitoring observations and satellite data closely. There will be two notable areas of precipitation with the system's passage tonight. The first is in the Camas Prairie northeastward to much of Shoshone County, where precipitation is expected to develop fairly rapidly this evening in response to upper divergence near and to the left of the nose of a 250-mb jet streak impinging on the Oregon Coast (quickly moving inland this evening). Larger-scale and CAM guidance is reasonably consistent in developing this precipitation during a 6-9 hour period (roughly between 8 pm and 5 am). The northwest edge of the precipitation may be rather sharp, with PoPs dropping below 20 percent by the WA/ID border and unmentionable west of Spokane and Whitman counties. Precipitation amounts will be light west of U.S. 95, but amounts above a quarter inch appear increasingly plausible in eastern Nez Perce, eastern Lewis, and much of southern Shoshone counties (probabilities increasing to 25+ percent). The second area is near the Cascade crest, and given the cold temperatures attendant to the trough, precipitation type will be snow in the highest terrain (snow levels dropping to around 4000 feet during the overnight hours). Surface temperatures will be near freezing at the passes, so little or no impactful accumulation is expected. However, the highest peaks may see a couple of inches of snow by Sunday morning. Precipitation rapidly diminishes east of the peaks thanks to effect downsloping/shadowing. The precipitation will diminish rapidly Sunday morning in the Idaho Panhandle, but some orographic showers may continue in the Cascades for much of the day. Meanwhile, with the cold trough atop the Northwest, it will not take much surface heating to destabilize the atmosphere sufficiently in the higher terrain of north-central and northeast Washington to initiate a few showers (and maybe a rogue thunderstorm). Coverage looks rather sparse based on the CAMs (likely owing to the ambient dry low levels in place). The bigger story will be the colder temperatures combined with the breezy conditions, making for a somewhat raw day across the region. The winds will diminish on Sunday night, and temperatures will drop to the 30s to low 40s in much of the area. The higher terrain of the Cascades will bottom out below freezing. Monday through Wednesday...Main story this period will be the persistence and strengthening of a deep trough in the Northwest. The result will be a very cool period for the region, with wetting rains looking probable for much of the area. A reinforcing vort max will dig into the Northwest on Monday, and the cold air aloft is expected to permit the development of instability showers in orographically favored terrain, with perhaps a bit more coverage in the southern Idaho Panhandle in proximity to better large-scale lift in advance of the digging trough. By Monday night, the trough will pivot into a more neutral orientation, allowing larger-scale lift to shift northward into much of the Inland Northwest. More widespread precipitation is expected on Tuesday as the trough moves little and diurnal instability maximizes. With very cold air aloft, considerable cloud cover, and precipitation in much of the area, temperatures will struggle to reach 60 for highs on Tuesday (aside from the lower Columbia Basin and the Lewiston-Clarkston Valley). Once again, temperatures will be cold enough Monday night for some light snow in the highest terrain of the Cascades, as well as the higher terrain of the Idaho Panhandle. No societally impactful accumulations are expected, however. As mentioned, there is decent potential for wetting rains on Tuesday across the area. Latest ensemble guidance indicates probabilities exceeding 20 percent across the entire area, with probabilities exceeding 50 percent roughly north of U.S. Highway 2 and in much of the Idaho Panhandle. Ensemble means approach a half inch in northeast Washington and the northern Idaho Panhandle, down to around or just below a tenth of an inch in the lower Columbia Basin. The upper trough will linger on Wednesday, with showery weather continuing. Coverage should be less than Tuesday given the weakening nature of the trough and its subtle shift northward. Temperatures will be several degrees warmer, but should remain at least ten degrees below average. Thursday through Saturday...The cold trough will lift northeast from the region to close the work week, but at least a subset of the guidance indicates a reinforcing trough developing farther to the southwest. Depending on the strength of this trough, the impending warm-up at the end of the week will either be to slightly above average levels (for example, highs near 80 in Spokane) or near to slightly below average (highs in the middle 70s in Spokane). There are also implications on precipitation chances, with the stronger/deeper trough off the Pacific Coast allowing for precipitation to spread into northern/eastern portions of the CWA on Friday and Friday night (depicted, e.g., by the deterministic GFS). Current forecast has low PoPs for these areas to accommodate for this uncertainty, with a gradual warming trend Thursday through Saturday near the consensus of the ensemble suites for now. /CMS && .AVIATION... 00z TAFs: Strong west to southwest winds (10 to 20 kt with occasional gusts to 30+ kt) will continue through Sunday, with VFR conditions forecast to continue for the next 24 hours. At LWS, light rain may occur between 05z and 11z (about a 60 percent chance), but there is less than a 20 percent chance of sub-VFR conditions. About a 20 to 40 percent chance of brief light rain or a shower exists at COE and PUW as well overnight, but sub-VFR conditions are not expected. Dry conditions will prevail after daybreak tomorrow at all terminals. /CMS && .PRELIMINARY POINT TEMPS/POPS... Spokane 47 65 42 64 44 60 / 20 10 10 0 20 50 Coeur d'Alene 48 63 41 62 43 58 / 30 10 20 10 40 50 Pullman 45 61 37 59 39 59 / 40 10 0 10 20 50 Lewiston 55 69 47 65 47 66 / 60 10 0 20 30 40 Colville 44 64 37 64 40 59 / 20 50 50 30 50 80 Sandpoint 47 62 41 62 43 55 / 40 40 30 20 40 80 Kellogg 48 59 42 58 44 54 / 60 30 10 30 40 80 Moses Lake 46 69 39 69 44 66 / 10 10 0 0 20 30 Wenatchee 50 66 45 66 49 63 / 0 10 0 10 20 40 Omak 47 69 43 68 46 63 / 10 20 10 20 40 60 && .OTX WATCHES/WARNINGS/ADVISORIES... ID...None. WA...None. &&
The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
Entiat raws recorded a gust 58 MPH at 2035LST.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Washington in 2023Every state in 2023This day in weather historyWarnings in Washington, June 2023
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: 1115847.