National Weather Service

Watches, Warnings & Advisories
NWS Homepage

Flood Watch

Flood Watch
National Weather Service Pocatello ID
1055 AM MDT Sat Mar 25 2017

Eastern Magic Valley-Sawtooth Mountains-Upper Snake Highlands-
South Central Highlands-Caribou Highlands-
Cache Valley/Idaho Portion-Wasatch Mountains/Idaho Portion-
Big and Little Wood River Region-Lost River/Pahsimeroi-
Including the cities of Burley, Rupert, Heyburn, Stanley,
Clayton, St. Anthony, Ashton, Island Park, Driggs, Victor,
Malad City, Oakley, Rockland, Henry, Soda Springs, Downey,
Lava Hot Springs, Preston, Montpelier, Hailey, Ketchum, Bellevue,
Arco, Challis, and Mackay
1055 AM MDT Sat Mar 25 2017


The Flood Watch is now in effect for

* Portions of central Idaho, eastern Idaho, south central Idaho,
  and southeast Idaho, including the following areas, in central
  Idaho, Big and Little Wood River Region, Lost
  River/Pahsimeroi, and Sawtooth Mountains. In eastern Idaho,
  Upper Snake Highlands. In south central Idaho, Eastern Magic
  Valley. In southeast Idaho, Cache Valley/Idaho Portion,
  Caribou Highlands, South Central Highlands, and Wasatch
  Mountains/Idaho Portion.

* Through Sunday afternoon

* Excessive snowmelt along with rain, mainly below 7000 feet.

* Warm temperatures and periods of lower elevation rain will
  enhance snowmelt across the region resulting in areas of low
  land flooding. Water over roads and flooding near homes is
  possible. Areas near creeks and streams may be especially
  vulnerable to runoff flooding. Periods of rain below 6500 feet
  is expected Sunday night and Monday which will exacerbate
  runoff issues in the lower elevations.


A Flood Watch means there is a potential for flooding based on
current forecasts.

You should monitor later forecasts and be alert for possible
Flood Warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.



Flood Watch
National Weather Service Eastern North Dakota/Grand Forks ND
957 AM CDT SAT MAR 25 2017

...The flood watch continues for these river locations in North

  * Grafton...on the Park Walsh County

.   A warm stretch of daytime temperatures and nighttime
temperatures near freezing, combined with a substantial snowpack
in tho upper parts of the Park River watershed still waiting to
melt, are expected to drive a rise in the river at Grafton ND
sometime after this weekend. Field reports of the lower basin
indicate that there is also a fair amount of snow/ice/water in the
drainage ditches also waiting to be released as temperatures rise
during this coming week. There is still some uncertainty with our
7-day deterministic forecasts at this point since the timing of the
water as runoff and soil infiltration are highly dependent on the
daytime and nighttime temperatures and thus the specific timing and
magnitude of flooding will change as this flood event progresses.

    As always, during our spring flood melt season, the breakup of
the ice-covered rivers can quickly lead to localized ice-jam
flooding. If you see this situation, please call local law
enforcement so they can pass the river flooding conditions on to us.

 The segments in this product are river forecasts for selected
 locations in the watch area...


Safety message...turn around, don`t drown...

 - Don`t travel through flooded areas!

 - Persons living in the Red River Basin should monitor river
   levels while the river is in, or near, flood.

 - Listen to NOAA weather radio or commercial radio or TV
   for the latest updates.

For more information...go to the AHPS/River section
on our web page at:

This forecast does not account for ice jams that can
quickly raise local river levels with little or no notice.


957 AM CDT SAT MAR 25 2017

The Flood Watch continues for
  the Park River at Grafton
* from Wednesday afternoon until further notice.
* At  8:30 AM Saturday the stage was 8.9 feet.
* Major flooding is possible toward the end of next week with the
  crest ranging from 14 to 16 feet around April 1st.
* Flood Stage is 12.0 feet.
* Forecast...the river may reach Flood Stage (Minor) by Wednesday
  afternoon and then cresting between 14 to 16 feet around April 1st.
* A flood warning will be issued when the river starts to definitely
  respond to the snowmelt runoff from the upper Park River basin.
* Local ice-jam flooding can quickly raise river levels up to three
  feet at places on the flood plain.


Daily 7am CDT/6am CST forecast stage in feet:

 Date                Sun    Mon    Tue    Wed    Thu    Fri    Sat
(month/day)         03/26  03/27  03/28  03/29  03/30  03/31  04/01

Park River
  Grafton            8.9    9.2   10.4   11.6   12.8   14.0   14.9

LAT...LON 4850 9749 4839 9750 4842 9716 4851 9715


U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
Page last modified: June 2, 2009
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE