195
WGUS65 KBYZ 270946
FFABYZ
FLOOD WATCH
NATIONAL WEATHER SERVICE BILLINGS MT
346 AM MDT SUN APR 27 2025
.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. MODERATE TO HEAVY RAINFALL OVER RECENT
BURN AREAS (ROBERTSON DRAW AND AMERICAN FORK) MAY PRODUCE FLASH
FLOODING IN AND DOWNSTREAM OF THE BURNED AREA.
MTZ034-040-056-064>068-139-141-170-172-281000-
/O.CON.KBYZ.FA.A.0001.250427T2100Z-250429T0000Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NORTHERN STILLWATER-NORTHERN PARK-RED LODGE FOOTHILLS-PARADISE
VALLEY-LIVINGSTON AREA-BEARTOOTH FOOTHILLS-ABSAROKA/BEARTOOTH
MOUNTAINS-CRAZY MOUNTAINS-SOUTHEASTERN CARBON-NORTHERN SWEET
GRASS-NORTHERN CARBON-MELVILLE FOOTHILLS-
INCLUDING THE LOCATIONS OF BRIDGER, BIG TIMBER, JOLIET, FISHTAIL,
WILSALL, LIVINGSTON, MCLEOD, RED LODGE, EMIGRANT, COOKE CITY,
FROMBERG, ABSAROKEE, MELVILLE, CLYDE PARK, AND COLUMBUS
346 AM MDT SUN APR 27 2025
...FLOOD WATCH REMAINS IN EFFECT FROM 3 PM MDT THIS AFTERNOON
THROUGH MONDAY AFTERNOON...
* WHAT...FLOODING CAUSED BY RAIN AND SNOWMELT REMAINS A THREAT.
* WHERE...A PORTION OF SOUTH CENTRAL MONTANA, INCLUDING THE
FOLLOWING AREAS, ABSAROKA/BEARTOOTH MOUNTAINS, BEARTOOTH
FOOTHILLS, CRAZY MOUNTAINS, LIVINGSTON AREA, MELVILLE FOOTHILLS,
NORTHERN CARBON, NORTHERN PARK, NORTHERN STILLWATER, NORTHERN
SWEET GRASS, PARADISE VALLEY, RED LODGE FOOTHILLS AND SOUTHEASTERN
CARBON.
* WHEN...FROM 3 PM MDT THIS AFTERNOON THROUGH MONDAY AFTERNOON.
* 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. NOW IS THE TIME TO MOVE
EQUIPMENT AND LIVESTOCK TO HIGHER GROUND AWAY FROM WATERWAYS.
RECENT BURN SCARS MAY BE MORE SUSCEPTIBLE TO PRODUCE FLASH
FLOODING, INCLUDING THE ROBERTSON DRAW SOUTH OF RED LODGE AND THE
AMERICAN FORK IN THE CRAZY MOUNTAINS.
* ADDITIONAL DETAILS...
- THUNDERSTORMS THIS AFTERNOON WILL TURN TO MORE PERSISTENT
RAIN THIS EVENING INTO THE OVERNIGHT HOURS. SNOW LEVELS WILL
FALL FROM 9500 FEET THIS EVENING TO AROUND 5000 FEET MONDAY
MORNING. RAIN FALLING ON SNOW MAY MELT 1 TO 3 INCHES OF SNOW
WATER BEFORE COOLER TEMPERATURES CHANGE PRECIPITATION TO SNOW
ENDING THE SNOWMELT. THE COMBINATION OF PRECIPITATION AND
SNOWMELT MAY RESULT IN A 2 TO 5 INCH WATER EVENT WITH RAPID
RUNOFF FILLING SMALL STREAMS AND CREEKS ALONG THE FOOTHILLS.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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. THOSE NEAR BURN AREAS SHOULD
HAVE AN EVACUATION PLAN IN PLACE AND BE PREPARED TO MOVE TO A SAFE
LOCATION QUICKLY SHOULD CONDITIONS WARRANT.
MTZ138-169-171-WYZ198-199-281000-
/O.CON.KBYZ.FA.A.0001.250428T0300Z-250429T0600Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SOUTHERN BIG HORN-BIGHORN CANYON-PRYOR/NORTHERN BIGHORN MOUNTAINS-
NORTHEAST BIGHORN MOUNTAINS-SHERIDAN FOOTHILLS-
INCLUDING THE LOCATIONS OF LODGE GRASS, PRYOR, FORT SMITH,
BURGESS JCT, AND SHERIDAN
346 AM MDT SUN APR 27 2025
...FLOOD WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH MONDAY
EVENING...
* 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 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. NOW IS THE TIME TO MOVE
EQUIPMENT AND LIVESTOCK TO HIGHER GROUND AWAY FROM WATERWAYS.
RECENT BURN SCARS MAY BE MORE SUSCEPTIBLE TO PRODUCE FLASH
FLOODING, INCLUDING THE ELK BURN SCAR WEST OF DAYTON AND SHERIDAN.
* ADDITIONAL DETAILS...
- SCATTERED SHOWERS AND THUNDERSTORMS THIS EVENING WILL TURN TO
MORE PERSISTENT RAIN INTO THE OVERNIGHT HOURS. SNOW LEVELS
WILL FALL FROM 9500 FEET THIS EVENING TO AROUND 5000 FEET
MONDAY MORNING. RAIN FALLING ON SNOW MAY MELT 1 TO 3 INCHES
OF SNOW WATER BEFORE COOLER TEMPERATURES CHANGE PRECIPITATION
TO SNOW IN THE FOOTHILLS, ENDING THE SNOWMELT. THE
COMBINATION OF PRECIPITATION AND SNOWMELT MAY RESULT IN A 2
TO 4 INCH WATER EVENT WITH RAPID RUNOFF FILLING SMALL STREAMS
AND CREEKS ALONG THE FOOTHILLS.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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. THOSE NEAR BURN AREAS SHOULD
HAVE AN EVACUATION PLAN IN PLACE AND BE PREPARED TO MOVE TO A SAFE
LOCATION QUICKLY SHOULD CONDITIONS WARRANT.
CHAMBERS
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