Flood Potential Outlook
Issued by NWS Spokane, WA

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FGUS76 KOTX 072216

Hydrologic Outlook
National Weather Service Spokane WA
216 PM PST Tue Feb 7 2017

...Rain and snowmelt may cause localized flooding issues later this

Flooding problems may occur during the latter half of this week as
a Pacific storm system will bring significant rainfall and much
warmer temperatures to the region. Rain and snow will start by
Wednesday afternoon or evening and turn to all rain late
Wednesday night or early Thursday morning. This precipitation
coupled with warm and breezy weather on Thursday and Friday will
cause significant melting of the snow on the ground below 3000
feet. This could lead to the following problems:

* Urban flooding: Rain and melting snow will likely cause street
  flooding in urban areas. Storm drains plugged with snow and ice could
  exacerbate the situation.

* Ice Jam flooding: Many of the region`s streams and rivers are
  covered with thick ice. Rain, melting snow, and warmer
  temperatures will likely cause some of this ice to break up and
  float downstream. This could lead to ice jams at bridges or
  other constrictions along the stream or river. These ice jams
  can cause flooding upstream if the water is unable to flow past
  the jam. If the ice jam suddenly breaks up, a wave of water and
  ice could rapidly flow downstream causing damage along the
  banks of the river.

Residents and travelers are encouraged to monitor this weather
situation for updates, watches or warnings. People who live along
streams or rivers with ice should monitor them closely.


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