On Friday, October 4th, a brief, weak tornado touched down near Tenino, WA. No damage or impacts were reported from this event.
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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 SEW wrote it up.
On Friday, October 4th, a brief, weak tornado touched down near Tenino, WA. No damage or impacts were reported from this event. However, it was caught on video.
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 Seattle, WA wrote its last area forecast discussion before the first event at Oct 4, 7:50 AM PST, 6 hours 7 minutes earlier.
Area Forecast Discussion
National Weather Service Seattle WA
850 AM PDT Fri Oct 4 2019
.SYNOPSIS...A couple of upper troughs will cross Western Washington
today and Saturday for a chance of showers each day. High pressure
aloft will bring dry weather on Sunday. Showers will return Monday
and Tuesday as another upper trough moves through. An upper ridge
will dry conditions out Wednesday and Thursday.
&&
.SHORT TERM /TODAY THROUGH SUNDAY/...Still some scattered showers
over portions of W WA this morning as per current radar while
current satellite shows a bit of a hole in the clouds stretching
along a line from Hoquiam to Seattle then hugging the eastern shores
of the Sound up to maybe the Snohomish/King county line...so while
chance PoPs remain in the forecast...cannot rule out a few sun
breaks either.
A shortwave impulse on the back edge of the exiting trough coupled
with lingering moisture will...as already mentioned...keep chance
PoPs over the area today. Once this feature pushes east tonight and
conditions dry somewhat overnight a slightly better defined
shortwave will enter the area close behind allowing PoPs to persist
into Saturday although current forecast has chances diminishing
through the day. May need to revisit that as hi-res short term
models and the ECMWF are showing better PoPs than what is currently
in the forecast. Forecast gets back on track for Saturday
evening/Saturday night and into Sunday as upper level ridging builds
over the area and dries things out to finish the weekend.
Will see a steady increase in daytime highs over the short term with
upper 50s for most lowland interior locations today climbing into
the lower 60s Saturday and Sunday. SMR
.LONG TERM /MONDAY THROUGH THURSDAY/...From Previous Discussion...An
upper trough will carve out across the region Monday and Tuesday for
an increasing chance of showers and cooler weather. Snow levels will
drop to 3500-4000 feet by Tuesday and the higher passes could see
minor snow accumulations. Highs will cool into the mid to upper 50s
by Tuesday. An upper ridge will bring a return to dry weather
Wednesday and Thursday. Highs will continue to be a few degrees
below normal however and there will be some chilly mornings with
less cloud cover. Schneider
&&
.AVIATION...Moist northwesterly flow aloft will continue today
and tonight. The air mass will be slightly unstable until 04z
Saturday. Low level flow will be southerly today becoming
increasingly onshore tonight.
Generally VFR conditions with scattered to broken layers 4k to 6k
feet through the afternoon hours. Local ceilings below 1k ft are
possible this morning. Ceilings will occasionally lower to around 2k
feet in showers. Shower activity coming to an end in the lowlands
this evening. Light flow in the lower levels Saturday morning with
areas of ceilings 1000-2000 feet developing in the early morning
hours.
KSEA...Ceilings for the most part in the 3500-4500 foot range.
Could see brief ceilings near 2000 feet 14z-22z if a shower gets
close enough to the terminal. Southerly wind 8 to 12 knots easing
late tonight.
&&
.MARINE...A surface low over the coastal waters will move onto the
Olympic Peninsula and dissipate today. Small craft advisory strength
winds will continue over the coastal waters through this morning.
Winds over the inland waters will touch 20+ kt at times and
advisories have been issued for today. Onshore flow will develop
tonight then become northerly and offshore over the weekend. The
next weather system will affect the area late Monday and Tuesday. CHB
&&
.HYDROLOGY...The daily hydrology discussion has ended until the
start of the next rainy season; it will only be updated as needed
until then.
&&
.SEW WATCHES/WARNINGS/ADVISORIES...
WA...None.
PZ...Small Craft Advisory until 11 AM PDT this morning for Coastal
Waters From Cape Flattery To James Island 10 To 60 Nm-
Coastal Waters From Cape Flattery To James Island Out 10 Nm-
Coastal Waters From James Island To Point Grenville 10 To
60 Nm-Coastal Waters From James Island To Point Grenville
Out 10 Nm-Coastal Waters From Point Grenville To Cape
Shoalwater 10 To 60 Nm-Coastal Waters From Point Grenville
To Cape Shoalwater Out 10 Nm-West Entrance U.S. Waters
Strait Of Juan De Fuca.
Small Craft Advisory until 5 PM PDT this afternoon for Admiralty
Inlet-East Entrance U.S. Waters Strait Of Juan De Fuca-
Northern Inland Waters Including The San Juan Islands-Puget
Sound and Hood Canal.
&&
www.weather.gov/seattleThe Langley Hill radar (KLGX), 98 km away, was scanning. The volume nearest the first event began at 21:57 UTC.
1 tornado. Local standard time, as filed.
On 10/04/2019 a brief weak tornado was confirmed by video and fire/rescue report near Tenino, WA. No impacts or damage were observed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Washington in 2019Every state in 2019This day in weather historyThe tornado archive for Washington, 2019Warnings in Washington, October 2019
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: 854651.