An early spring winter storm produced heavy snow over Wallowa County dropping up to a foot of snow in some areas.
Every event with a place to put it; 1 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 PDT wrote it up.
An early spring winter storm produced heavy snow over Wallowa County dropping up to a foot of snow in some areas.
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 Pendleton, OR wrote its last area forecast discussion before the first event at Mar 30, 8:23 PM PST, 3 hours 37 minutes earlier.
Area Forecast Discussion
National Weather Service Pendleton OR
923 PM PDT Mon Mar 30 2020
.EVENING UPDATE...
Rain and mountain snow continue this evening as moist onshore mid
level flow continues with a powerful trough of low pressure off
British Columbia. This trend will continue over the next 24 to 36
hours with intermittent shower activity for the lower elevations
and accumulating snow mainly above 2000 to 3000 feet.
Only minor adjustments were made to the forecast since this
afternoon. Made slight modifications to sky grids, overnight lows
and hourly temperatures through Tuesday morning. Otherwise, the
forecast is on track and we continue to expect additional snow
accumulations for the Cascades and Blue Mountains. Stay safe out
there!
&&
.AVIATION...06Z TAFs...
Shower activity to persist overnight, possibly mixing with or
changing to snow at KBDN/KRDM. While brief MVFR
ceilings/visibilities will be possible, expect mainly broken VFR
ceilings and very light shower activity with limited visibility
restrictions. Winds to remain westerly at or below 10 knots,
increasing and becoming gusty after 15z Tuesday.
&&
.PRELIMINARY POINT TEMPS/POPS...
PDT 36 52 32 50 / 40 60 20 30
ALW 39 53 34 51 / 40 60 20 30
PSC 41 58 36 55 / 20 30 10 20
YKM 32 55 30 53 / 30 10 10 20
HRI 39 56 34 54 / 30 30 10 20
ELN 28 50 28 49 / 40 20 10 30
RDM 32 46 23 45 / 80 80 10 20
LGD 33 44 29 43 / 90 90 30 60
GCD 35 40 25 39 / 90 90 30 40
DLS 38 53 35 53 / 80 50 20 30
&&
.PDT WATCHES/WARNINGS/ADVISORIES...
OR...Winter Weather Advisory until 8 PM PDT Tuesday for ORZ502-503-
506-509.
WA...Winter Weather Advisory until 8 PM PDT Tuesday for WAZ030-520.
&&
79/88/The national radar mosaic for the moment the first event began.
1 heavy snow. Local standard time, as filed.
Up to 12 inches of snow fell 6 SW Joseph and 7.5 inches of snow in Joseph.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oregon in 2020Every state in 2020This day in weather historyWarnings in Oregon, March 2020
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: 874449.