Flood Potential Outlook
Issued by NWS Medford, OR
FGUS76 KMFR 112233
NATIONAL WEATHER SERVICE MEDFORD, OR
333 PM PDT TUE OCT 11 2016
Hydrologic Outlook for significant rises on rivers and streams in
Sisikyou and Modoc counties in California and Coos, Curry, Douglas,
Jackson, Josephine, Klamath and Lake counties in Oregon.
.A series of storms will move through the region beginning Thursday.
A strong jet stream stretching across the Pacific Ocean will bring
a steady stream of moisture into the Pacific Northwest with these
storms. This will result in heavy rainfall across the region. The
heaviest rainfall will be with the storm on Saturday as the remnants
of Typhoon Songda are pulled into the stream. Rainfall amounts of
over 6 inches at the coast and western Siskiyou county,to over
thirteen inches on the extreme southern coast can be expected
through Monday. Three to six inches can be expected inland to the
Cascades with one to two inches east of the Cascades from Thursday
to Monday. These forecast totals across the region are equal to or
higher than the totals normally seen through the entire month of
While main stem rivers will experience significant rises due to
these storms, they are not expected to flood. Small streams and
urban areas could experience high water or even flooding where there
is poor drainage. As this is the first large storm of the rainy
season, there is the potential for debris to clog storm drains,
ditches and culverts resulting in flooding.
Another concern is the heavy rain falling on recent burn scars. If
you live downstream of a recent burn scar, or if you are just
driving through a burn scar, stay alert as there is a high risk of
flash flooding and debris flows in and below burned areas.
The exact scenario for flooding and high water remains uncertain.
This product will be updated as necessary. Watches and warnings may
be issued by the National Weather Service if this situation worsens.