weather.gov     
National Weather Service

Watches, Warnings & Advisories
NWS Homepage

Hydrologic Outlook


Hydrologic Outlook
IDC015-025-039-045-085-302200-

Hydrologic Outlook
National Weather Service Boise ID
404 PM MDT Sun May 28 2017

...WARMER TEMPERATURES AND INCREASING HIGH ELEVATION SNOWMELT
WILL LEAD TO RISING RIVER AND STREAM LEVELS THIS WEEK...

A warming trend through the middle of the week will increase
melting of the high elevation snowpack in the Boise and West
Central Mountains. This will cause flows to increase on rivers and
streams fed by high elevation snowmelt, with the potential for
flooding along some waterways.

Rivers such as the South Fork Payette near Lowman, and Middle
Fork and South Fork of the Boise River will continue to run high
with another snowmelt peak expected later this week.

People living in flood prone areas along rivers and streams
should prepare for another round of higher flows and potential
flooding.

Rivers and streams are very dangerous during spring snowmelt. The
water is very swift and cold and can quickly carry you downstream.

$$

HYDROLOGIC OUTLOOK
MTC003-009-011-017-025-037-065-067-075-087-095-097-103-107-111-
WYC033-302015-

HYDROLOGIC OUTLOOK
NATIONAL WEATHER SERVICE BILLINGS MT
211 PM MDT Sun May 28 2017

Temperatures are forecast to warm into the 80s across the lower
elevations by the middle of the week, and persist at least
through the end of the week. At the same time, overnight
temperatures in the mountains will struggle to fall below
freezing. This will lead to an increase in the snowmelt across
the high country.

With the increased snowmelt, flows will subsequently increase
across area waterways through the week. Minor flooding will be
possible along streams in the foothills, with main stem rivers
potentially approaching flood stage as well. At the very least,
these will likely be the highest flows for the main stem rivers so
far this spring season.

Those with interests near rivers and streams should be alert to
the rising water levels over the next several days, and take
appropriate measures to protect livestock and property.

$$

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