A boulder temporarily blocked one lane of state Highway 155 near Disautel Pass during the morning hours. Okanogan county, WA.
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The episode as NWS OTX wrote it up.
A boulder temporarily blocked one lane of state Highway 155 near Disautel Pass during the morning hours. Okanogan county, WA.
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 24, 3:48 AM PST, 1 hour 12 minutes earlier.
Area Forecast Discussion National Weather Service Spokane WA 448 AM PDT THU APR 24 2014 .SYNOPSIS... Occasional precipitation chances, breezy conditions and relatively cool temperatures dominate the weather pattern. The next organized storm system will bring periods of rain Thursday morning, followed by a threat of scattered showers and thunderstorms Thursday afternoon. Showers will remain a threat into the weekend, before a relative lull comes for the start of the new work week. && .DISCUSSION... ...POTENTIAL FOR A FEW STRONG THUNDERSTORMS THURSDAY AFTERNOON... Today and tonight: The Inland NW transitions from a stratiform to a convective precipitation regime, before the threat of showers wanes after dark. A warm front and its stable precipitation will continue to shift into northeast WA and the ID Panhandle this morning. Yet an occluding cold front and accompanying mid-level shortwave will be coming east of the Cascades between 15-18Z (8-11 AM), before advancing east-northeast into north ID between 18-00Z (11 AM-5 PM) and eventually out through MT tonight. This will keep the precipitation threat high over the eastern third of WA and north ID through the day, before starting to dissipate after about 00-03Z (5-8 PM). Precipitation turns more showery over central WA westward to the Cascades before dying out with the loss of daytime heating. Overall for this morning models place the higher precipitation amounts across the eastern third of WA and the ID Panhandle. By afternoon models place the higher QPF amounts over northeast WA and north ID Panhandle, along and north of a line from Davenport to Kellogg. However all areas will have a risk for periods of locally heavy rain with instability and a thunderstorm threat. So yes, in addition to the generalized precipitation threat, there will be potential for thunderstorms and some of these may be strong. From near midday through early evening models show convective instability blossoming. A swath of 200-500 J/kg of CAPE and LIs between -1 and -3C across the Upper Columbia Basin around 18Z (11AM) shift toward the eastern third of WA and north ID between 21-00Z (2-5PM). A potential limiting factor in the coverage and strength of storms will 0-6KM Bulk Shear. This is favorable early today, with values between 25-40kts. However toward midday this more favorable shear shifts south, mainly impacting far southeast WA and the central Panhandle. Still this is enough to be concerned that more organized storms are possible, especially in this area. With a LLJ around 25-35kts feeding into southeast WA and the central Panhandle and the aforementioned instability, any organized storms will be capable of strong winds, some hail and heavy downpours. With all these factors I increased the thunderstorm chances from slight to chance this afternoon across east-central and southeast WA and the central and southern Panhandle. The best threat appears between 21-00Z (2 to 5 pm). Snow levels will linger near about 4000 feet over the Cascade crest, meaning some light snow accumulations in places such as Stevens Pass. Snow levels near 4500-5000 feet will be common elsewhere, meaning some snow once again over Sherman Pass and across Lookout Pass into Montana. Aside from the precipitation threat, the passing front will increase the pressure gradient and mixing, leading to breezy and locally gusty winds. Temperatures are expected to be near or slightly below average. /J. Cote' Friday through Sunday...The weather over the Inland NW will continue to be subject to the whims of a deep upper level trough which is expected to hang around through the weekend. Despite its presence...the weather isn't expected to be as wet as what we will experience today and tonight as there are no signs of a sub- tropical moisture intrusion. For Thursday night and Friday the models are in good agreement that the 500 mb trough axis will shift onto the coast which should transition the mid-level flow to a southerly orientation. Just how much precipitation this will result in isn't certain...but there quite a bit of model consensus that much of the region will be dry...at least through the late morning hours. The exception could be over the SE corner of WA and the adjacent portions of the Idaho Panhandle. This is the location where moisture from todays system could remain fixed as the negatively tilted shortwave pushes through to the northeast. Whether it remains fixed there or farther south through Friday morning isn't certain but there is a good chance that it will work its way back to the north during the afternoon as the mid-level flow backs toward the south. This will spread a high threat of stratiform precipitation across the Idaho Panhandle south of I90 with a lesser chance north. Across the remainder of the forecast area we will likely see diurnal heating lead to convection as lapse rates fall in advance of the 500 mb cold pool. Unstable conditions are not expected to be deep enough to trigger thunderstorms...but some could near the Cascades as 500 mb temps drop to near -30c late in the day. For Friday night and into early Saturday trof and 500 mb cold pool will shear apart as the longwave pattern is undercut by a strong upper level jet cutting through the desert SW. This will still leave the stratiform rain shield fixed over the Idaho Panhandle and the western portions of Montana. The chances for measurable precipitation will decrease steadily from east to west across the eastern half of Washington. By afternoon the approach of a minor shortwave trough from the southwest could wrap some of the Idaho moisture into the NE corner of Washington. Precipitation totals from Friday night into Saturday could be appreciable over portions of the Panhandle with readings nearing a half inch or slightly more over SW facing slopes. Snow levels will generally be above 4500 feet...so Mullan Pass could see some appreciable snow. For Sunday the base of the trough is expected to retreat to the north and it will gradually be undercut by moist west-southwest flow. This will result in an increasing precipitation threat beginning Sunday morning over SC Washington and gradually spreading northeast across the remainder of the region during the afternoon and evening. This could be the last batch of widespread precipitation as the extended models are all hinting at an amplifying ridge beginning to develop by Monday and persisting into Tuesday and beyond. fx Tuesday Night through Thursday: Models have come into better agreement concerning the middle of next week placing the Inland NW in a dry ridge pattern. By Tuesday night the ridge looks to be firmly in place pushing the storm track to our north and leaving our region in a stable, dry pattern. With the ridge overhead we can expect clearing skies, warming temps and light winds. The biggest question of this time frame currently is how high the temperatures get throughout the daytime. Right now the models have pegged next Thursday as the warmest day, but disagree on how warm. With the strength of the ridge, the region will likely approach the warmest temps we have seen so far this year. An easy way to sum up this period would be...very pleasant. /Fliehman && .AVIATION... 12Z TAFS: An occluding frontal wave pushing into the region will bring rain, transiting to showers after 15-18Z, with a potential for thunderstorms starting toward midday to early afternoon, before the shower threat wanes after 00-03Z. Lcl MVFR/IFR cigs/vis are possible in the heavier rains earlier today, before 15-17Z. Thunderstorms be possible from about 18-03Z across much of eastern WA and north ID, but the best threat at this time appears will be over southeast WA to the central ID panhandle between 20-00Z. This includes potentially near MWH, GEG to COE, and PUW/LWS. Some stronger storms are possible with gusty winds, small hail and heavier rain. /J. Cote' && .PRELIMINARY POINT TEMPS/POPS... Spokane 56 36 54 37 55 36 / 100 60 30 30 20 20 Coeur d'Alene 53 35 54 37 54 34 / 100 70 40 40 40 20 Pullman 55 37 51 37 53 35 / 100 50 50 50 20 20 Lewiston 61 43 55 42 58 40 / 100 50 60 50 10 20 Colville 59 33 60 36 61 34 / 100 20 40 20 50 40 Sandpoint 50 34 54 37 53 34 / 100 80 40 70 80 40 Kellogg 51 34 52 36 49 34 / 100 70 60 80 70 30 Moses Lake 64 38 61 38 63 40 / 70 10 20 10 0 30 Wenatchee 62 42 61 41 63 43 / 60 10 30 10 0 30 Omak 62 34 61 35 63 36 / 100 10 20 10 0 30 && .OTX WATCHES/WARNINGS/ADVISORIES... ID...None. WA...None. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SPOKANE WA 602 AM PDT WED APR 23 2014 IDZ002-003-026-027-WAZ031>036-041-043-044-241315- COEUR D'ALENE AREA-IDAHO PALOUSE-LEWISTON AREA- LEWIS AND SOUTHERN NEZ PERCE COUNTIES-NORTHEAST BLUE MOUNTAINS- LOWER GARFIELD AND ASOTIN COUNTIES-WASHINGTON PALOUSE- MOSES LAKE AREA-UPPER COLUMBIA BASIN-SPOKANE AREA-WENATCHEE AREA- OKANOGAN VALLEY-WATERVILLE PLATEAU- 602 AM PDT WED APR 23 2014 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 SCATTERED SHOWERS MAY BRING SOME LOW ELEVATION SNOW TO MANY LOCATIONS EARLY WEDNESDAY MORNING. ANY ACCUMULATION SHOULD BE LIGHT. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH SUNDAY THE NEXT WEATHER SYSTEM MOVES INTO THE INLAND NORTHWEST THURSDAY WITH MORE RAIN AND BREEZY CONDITIONS. A CHANCE OF THUNDERSTORMS WILL DEVELOP FOR THURSDAY AFTERNOON AND EARLY EVENING AS WELL...WHICH MAY BE CAPABLE OF GUSTY WINDS...SMALL HAIL AND LOCALLY HEAVY DOWNPOURS. IDZ001-004-WAZ037-038-042-241315- NORTHERN PANHANDLE-CENTRAL PANHANDLE MOUNTAINS- NORTHEAST MOUNTAINS-OKANOGAN HIGHLANDS- EAST SLOPES NORTHERN CASCADES- 602 AM PDT WED APR 23 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH IDAHO... NORTH CENTRAL WASHINGTON AND NORTHEAST WASHINGTON. .DAY ONE...TODAY AND TONIGHT SNOW SHOWERS MAY BRING MINOR SNOW ACCUMULATIONS TO THE VALLEYS WEDNESDAY MORNING...AND TO THE MOUNTAINS ALL DAY WEDNESDAY. LIGHT ACCUMULATIONS MAY IMPACT THE MOUNTAIN PASSES. LATE TONIGHT ANOTHER SYSTEM MOVES IN FROM THE SOUTH...WITH THE POTENTIAL FOR LIGHT SNOWS CONTINUING NEAR PASS LEVEL. MODERATE SNOWS ARE POSSIBLE IN THE HIGH MOUNTAINS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH SUNDAY THE NEXT WEATHER SYSTEM MOVES INTO THE INLAND NORTHWEST THURSDAY WITH MORE RAIN AND MOUNTAIN SNOW AND BREEZY CONDITIONS. SOME MODERATE SNOWS ARE POSSIBLE IN THE HIGH MOUNTAINS.
The national radar mosaic for the moment the first event began.
1 debris flow. Local standard time, as filed.
A boulder temporarily blocked one lane of state Highway 155 near Disautel Pass during the morning hours according to an online article in the Omak-Okanogan County Chronicle.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Washington in 2014Every state in 2014This day in weather historyWarnings in Washington, April 2014
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: 507590.