Flood Watch issued April 27 at 2:13PM MDT until April 29 at 12:00AM MDT by NWS Billings MT

Runoff from a combination of heavy rain and some mid elevation snow
melt may cause flooding of streams and low lying areas in and
downstream of the foothills. Burn Scars may produce flash flooding
in and downstream of the burned area.

* WHAT…Flooding caused by rain and snowmelt remains a threat.

* WHERE…Portions of south central Montana, including the following
areas, Bighorn Canyon, Pryor/Northern Bighorn Mountains and
Southern Big Horn and north central Wyoming, including the
following areas, Northeast Bighorn Mountains and Sheridan
Foothills.

* WHEN…From 9 PM MDT this evening through Monday evening.

* IMPACTS…Excessive runoff may result in flooding of streams and
other low-lying and flood-prone locations close to the foothills.
Some roads may become impassable. Elk Burn Scar is susceptible to
flash flooding.

* ADDITIONAL DETAILS…
– Scattered showers and thunderstorms this evening will turn to
more persistent rain and snow in the higher foothills and
mountains in the overnight hours. The combination of
precipitation and snowmelt may result in a 1 to 3 inch water
event with rapid runoff filling small streams and creeks
along the foothills.
– http://www.weather.gov/safety/flood