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Hydrologic Outlook

Hydrologic Outlook
MTC003-009-037-065-067-095-097-107-111-WYC033-291645-

Hydrologic Outlook
National Weather Service Billings MT
1038 AM MDT Wed May 27 2020

...Rising river and stream levels next several days...

A period of much warmer temperatures will begin to melt the existing
high elevation snow pack (above 8000 feet) in the mountains late
this week into early next week. The snow melt will cause increased
flows along rivers and streams emerging from the mountains. This
includes the Yellowstone, Shields, Boulder, Stillwater, Little
Bighorn and Tongue Rivers, as well as numerous other smaller streams.

Beginning Friday, afternoon temperatures at 8000 feet will reach the
60s and 70s, and overnight temps will stay above freezing for much
of the night. Look for warmer than normal temperatures to continue
through at least the first part of next week.

Flooding is not expected at this time, but many rivers will reach
the highest levels we have seen yet this spring by the weekend.

Recreationists near the foothills should be prepared for changing
conditions and use extra caution when in and near the water. Flows
will be fast, and the water is cold. Those with interests near
waterways should move equipment and livestock away from low lying
areas.

The latest stages and forecasts for rivers and streams can be found
at our web page: http://water.weather.gov

$$



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