Below and attached is additional information about today and tomorrow’s storms.
Some key takeaways:
Heavy snow will fall on all mountain passes through early Wednesday morning,
causing hazardous driving conditions. See graphic for total snow amounts.
High winds will occur Tuesday afternoon/evening, but for most of Klamath
County, except very high elevations, they should not be damaging-strength.
Still, avoiding treed areas during that timeframe is recommended. See graphic
for forecasted wind gust speeds.
River flooding is predicted in some locations on the West side of the
mountains, but has not been forecast anywhere on the East side.
Morgan Lindsay
Klamath County Emergency Management
2543 Shasta Way, Klamath Falls, OR 97603
541-851-3741 Office
541-281-8357 Cell
From: Michael Petrucelli - NOAA Federal [mailto:michael.petrucelli@xxxxxxxx]
Sent: Monday, January 09, 2017 1:58 PM
To: _NWS WR MFR Gotomeeting
Subject: Heavy Mountain Snow through Tuesday, Heavy Rain and Gusty Winds Tuesday
Partners,
Here is a briefing on the weather impacts tonight and from the next storm on
Tuesday. Fell free to call if you have any questions.
[NWS Headline Banner.PNG]
Heavy Mountain Snow through Tuesday, Heavy Rain and Gusty Winds Tuesday
Impacts
· Snow with very hazardous driving conditions for most of Northern California,
Cascades and East side. Roads will be snow-packed and possibly impassable due
to heavy snow accumulations. The higher passes of Interstate 5 across the Mt.
Shasta Region and Siskiyou Summit are included.
· Roads 4500 feet and below should see decreased impacts late Tuesday morning
into Tuesday evening as snow transitions to rain.
· Possible flooding due to a combination of heavy rain and snowmelt. Rapid
rises expected on streams, creeks, and rivers. Mainstem river flooding is
predicted for the Coquille and lower Rogue but forecasts will change depending
on changes in rainfall amount.
· Flooding possible due to ice and debris blocking storm drains and culverts.
· Downed trees or tree branches causing power outages at the coast due to an
already saturated ground.
· High profile vehicles will be at risk due to strong cross winds.
Forecast Confidence
· High for snow above 3000 feet tonight into Tuesday morning.
· High for snow above 4500 feet Tuesday afternoon.
· Medium to high for snow above 5000 feet early Tuesday evening.
· Medium for snowfall amounts.
· Medium to high for storm total rain.
· High for wind.
· High for flood on mainstem rivers noted above.
· Medium to high for urban and small stream flooding.
Timing and Strength
· Rain:
o Now through Tuesday night. Rain will be heaviest Tuesday afternoon.
o See attached graphic for 6 hour rainfall totals Tuesday afternoon.
o See attached graphic for storm total rain
· Snow:
o Snow will be mainly above 3000 feet tonight into Tuesday morning, rise above
4500 feet late Tuesday morning and afternoon and near 5000 feet Tuesday
evening. Snow levels will drop again Tuesday night and end up between 2500 and
3000 feet early Wednesday morning.
o See attached graphic for storm total snow
· Wind:
o Strongest along the coast, south of Cape Blanco late Tuesday morning into
Tuesday evening.
o Strongest in the Shasta Valley late Tuesday morning into Tuesday evening.
o Tuesday afternoon into Tuesday evening east of the Cascades.
o See attached graphic for wind gusts
Weather Summary
A moist onshore flow will continue into tonight bringing valley rain and
moderate to heavy mountain snow through tonight. A stronger storm will arrive
Tuesday morning bringing heavy rain to southwest Oregon and Northwest
California from Tuesday morning through Tuesday evening. This storm will also
bring heavy mountain snow, though snow levels will bump up briefly to around
5000 to 5500 feet during the heaviest precipitation Tuesday afternoon. Gusty
winds are expected along the coast, mainly south of Cape Blanco Shasta Valley
and east of the Cascades. The worst of the weather should be over with late
Tuesday evening, but colder air will move in with snow levels lowering to
around 2500 to 3000 feet by early Wednesday morning. Valley rain and mountain
snow showers are expected Wednesday, but rain and snow totals will be much
less. Snow levels could drop near the valley floors west of the Cascades, but
little or no precipitation is expected.
For a detailed view of the hazards areas, visit the NWS Weather and Hazards
Viewer.<http://www.wrh.noaa.gov/map/?wfo=mfr>
Please do not reply to this email. Contact NWS Medford at (541) 773-1067 for a
24x7 forecaster.
Monitor NWS Medford on the web<http://weather.gov/medford>
Facebook<http://www.facebook.com/NationalWeatherService.Medford.gov?sk=wall>
Twitter<https://twitter.com/NWSMedford> and
YouTube<https://www.youtube.com/user/NWSMedford> for further updates.
For information on how to receive our warnings via our iNWS notification
system, contact ryan.sandler@xxxxxxxx<mailto:ryan.sandler@xxxxxxxx>.
[https://lh3.googleusercontent.com/GpZQvqCodX0C9YzM9EdikzcDCbCnf8d2EwXnTkZQjaHbyDUkTfEkTmo64_r23xrnjdVRrcD8UfnyfvEKIHBj2p131nBSexeNfM0-doQ3fNUUBYshoOTR7S7TvCJVLHK0qRoHlFGM]
[https://lh5.googleusercontent.com/QxpI5GVkHAbiyy-IXYrNeZ3QqjmQup_cWYxMUFPmk3teyFbDxZfEx8TgWHuXhv9dLQkwxn7irlkZJDZT58pNN8kBt-6s27ST796JQYq76xu2Z0XZpNNqTufYEXnRgecRJ3BfDK-Q]
[https://lh3.googleusercontent.com/bAR7-aC3PlxLavcCu31EQENcK-iuPQhGQ8OgpUCyTazYVplAT-sZAdCb0wLBkMR2-zy2BYLBIYgT24ufA_OJoV_k5X1oVlLUA1U3JD6kPhLG51TSBEP7BbDH-GSAuZB0IHDacF_5]
--
Michael Petrucelli
Meteorologist, Aviation and D.O.T Focal Point
National Weather Service - Medford, OR
4003 Cirrus Drive
Medford OR 97504
541-773-1067
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