Flood Watch
Flood Watch
National Weather Service Billings MT
1103 AM MDT Fri Sep 18 2026
.A strong and slow moving weather system will impact the region
tonight through Sunday. Well above normal atmospheric moisture levels
combined with the dynamics from this storm system will provide the
potential for heavy rainfall during this period. Thunderstorms
embedded in the more general rainfall will have the potential to
produce flash flooding, particularly over recent burn scars.
MTZ032-191715-
/O.EXA.KBYZ.FA.A.0004.260919T0000Z-260921T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Custer-
Including the locations of Miles City
1103 AM MDT Fri Sep 18 2026
...FLOOD WATCH IN EFFECT FROM 6 PM MDT THIS EVENING THROUGH SUNDAY
AFTERNOON...
* WHAT...Flooding caused by excessive rainfall is possible.
* WHERE...Custer county.
* WHEN...From 6 PM MDT this evening through Sunday afternoon.
* IMPACTS...Excessive runoff may result in flooding of creeks,
streams, and other low-lying and flood-prone locations. Flooding
may occur in poor drainage and urban areas.
* ADDITIONAL DETAILS...
- 1 to 2.5 inches of rainfall is forecast across the watch area
Friday night through Sunday. Locally heavier accumulations up to
4 inches are possible where thunderstorm activity develops.
- Any recent burn scars from this summer will have elevated Flash
Flood potential.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Please monitor 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 Billings MT
1103 AM MDT Fri Sep 18 2026
.A strong and slow moving weather system will impact the region
tonight through Sunday. Well above normal atmospheric moisture levels
combined with the dynamics from this storm system will provide the
potential for heavy rainfall during this period. Thunderstorms
embedded in the more general rainfall will have the potential to
produce flash flooding, particularly over recent burn scars.
MTZ029>031-034-036-040-042-056>058-063>068-138-139-141-169>173-228-
235-WYZ198-199-191715-
/O.CON.KBYZ.FA.A.0004.260919T0000Z-260921T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Musselshell-Treasure-Northern Rosebud-Northern Stillwater-Powder
River-Northern Park-Golden Valley-Red Lodge Foothills-Northern
Big Horn-Southern Rosebud-Judith Gap-Paradise Valley-Livingston
Area-Beartooth Foothills-Absaroka/Beartooth Mountains-Crazy
Mountains-Southern Big Horn-Southeastern Carbon-Northern Sweet
Grass-Bighorn Canyon-Northern Carbon-Pryor/Northern Bighorn
Mountains-Melville Foothills-Northeastern Yellowstone-Southern
Wheatland-Southwestern Yellowstone-Northeast Bighorn Mountains-
Sheridan Foothills-
Including the locations of Forsyth, Burgess Jct, Big Timber,
Fromberg, Crow Agency, Joliet, Red Lodge, Wilsall, Sheridan,
Emigrant, Billings, Lame Deer, Colstrip, Bridger, Broadus, Ryegate,
Pompeys Pillar, Melville, Harlowton, Fishtail, Pryor, Absarokee,
Clyde Park, Hardin, Hysham, Judith Gap, Columbus, Lodge Grass, Fort
Smith, Lavina, Roundup, McLeod, Cooke City, Livingston, and Custer
1103 AM MDT Fri Sep 18 2026
...FLOOD WATCH REMAINS IN EFFECT FROM 6 PM MDT THIS EVENING THROUGH
SUNDAY AFTERNOON...
* WHAT...Flooding caused by excessive rainfall is possible, along
with Flash Flooding of recent burn scars.
* WHERE...All of South Central Montana, Portions of Southeast
Montana, and Sheridan County Wyoming.
* WHEN...From 6 PM MDT this evening through Sunday afternoon.
* IMPACTS...Excessive runoff may result in flooding of creeks and
other low-lying and flood-prone locations. Flooding may occur in
poor drainage and urban areas.
* ADDITIONAL DETAILS...
- 1 to 2.5 inches of rainfall is expected across the watch area
tonight through Sunday. Locally heavier totals up to 4 inches are
possible where thunderstorm activity is more persistent.
- The Robertson Draw, East Side, Elk, and McGhee-Remington burn
scars are particularly vulnerable to Flash Flooding and debris
flows during the watch period. Any other burn scars from this
summer will have elevated Flash Flood potential as well.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Please monitor forecasts and be alert for possible Flood Warnings.
Those living in areas prone to flooding should be prepared to take
action should flooding develop.
&&
$$
EA
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Aberdeen SD
151 PM CDT Fri Sep 18 2026
MNZ039-046-SDZ003>006-009-010-015>018-033>037-045-048-051-191900-
Traverse-Big Stone-Corson-Campbell-McPherson-Brown-Walworth-Edmunds-
Dewey-Potter-Faulk-Spink-Stanley-Sully-Hughes-Hyde-Hand-Jones-Lyman-
Buffalo-
151 PM CDT Fri Sep 18 2026 /1251 PM MDT Fri Sep 18 2026/
This Hazardous Weather Outlook is for west central Minnesota,
central South Dakota, north central South Dakota and northeast
South Dakota.
.DAY ONE...This afternoon and tonight.
A low cloud deck will be causing some misty conditions that could
lower visibilities at times today and into tonight, with visibilities
staying above 1 mile. These misty conditions will start to clear up
overnight into Saturday morning.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
No hazardous weather is expected at this time.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
Hazardous Weather Outlook
National Weather Service Aberdeen SD
151 PM CDT Fri Sep 18 2026
SDZ007-008-011-019>023-191900-
Marshall-Roberts-Day-Clark-Codington-Grant-Hamlin-Deuel-
151 PM CDT Fri Sep 18 2026
This Hazardous Weather Outlook is for northeast South Dakota.
.DAY ONE...This afternoon and tonight.
A low cloud deck will be causing some misty conditions that could
lower visibilities at times today and into tonight, with visibilities
staying above 1 mile today. These misty conditions will turn into
fog overnight into Saturday morning over the Prairie Coteau and could
cause visibilities to be less than 1 mile at times.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
No hazardous weather is expected at this time.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
Hazardous Weather Outlook
National Weather Service Bismarck ND
116 PM CDT Fri Sep 18 2026
NDZ001>003-009-010-017-031-032-055-191830-
Divide-Burke-Renville-Williams-Mountrail-McKenzie-Golden Valley-
Billings-Northwest Ward-
116 PM CDT Fri Sep 18 2026 /1216 PM MDT Fri Sep 18 2026/
This Hazardous Weather Outlook is for portions of north central
North Dakota, northwest North Dakota, and southwest North Dakota.
.DAY ONE...This Afternoon and Tonight
Isolated to scattered thunderstorms are possible this afternoon
into early this evening. Severe weather is not expected.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday
The probability for widespread hazardous weather is low.
.SPOTTER INFORMATION STATEMENT...
Spotters are asked to provide reports to the NWS using standard
procedures, including through our social media accounts.
$$
Telken
