Dense Fog Advisory
NWS Billings MT ยท US
New
This event was updated at .
Details
Dense Fog Advisory In Effect Until 10 AM MDT This Morning
- Event
- Dense Fog Advisory
- Issued
- Onset
- Message expires
- Expected end
- Category
- Meteorological
- Urgency
- Expected
- Severity
- Moderate
- Certainty
- Likely
- Response
- Execute
Description
What
Areas of dense fog producing visibility one quarter mile or less.
Where
Portions of central, south central, and southeast Montana and north central Wyoming.
When
Until 10 AM MDT this morning.
Impacts
Morning travelers can expect to encounter areas of very poor visibility. This includes portions of Interstate 90 from Big Timber to Billings, Hardin and Sheridan. Portions of Interstate 94, US-191, and US-212 will also be impacted. Please use caution and allow extra time for your morning commute.
Additional details
Fog will slowly dissipate in the mid to late morning.
Instructions
If driving, slow down, use your low beam headlights, and leave plenty of distance ahead of you.
Affected areas
- Musselshell County, MT
- Treasure County, MT
- Northern Stillwater
- Golden Valley County, MT
- Northern Big Horn
- Southern Rosebud
- Judith Gap
- Southern Big Horn
- Northern Sweet Grass
- Northern Carbon
- Melville Foothills
- Northeastern Yellowstone
- Southern Wheatland
- Southwestern Yellowstone
- Sheridan Foothills
Public contact
- Issuer
- NWS Billings MT
- Website
- http://www.weather.gov
Message record
- Received
- Issue to receipt
- ~27s
- CAP status
- Actual
- CAP message type
- Alert
- Lifecycle
- New
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M31ST5BQV3P3E3M6FB09TPQJ
- Identifier
- urn:oid:2.49.0.1.840.0.bc37074695c29401a379531ab479ef47563c50d1.001.1
- Sender
- w-nws.webmaster@noaa.gov
- Scope
- Public
- CAP source
- 211803 v2.3.0
- Handling codes
- IPAWSv1.0
- Issuing office
- NWS Billings MT
- AWIPS ID
- CAPBYZ
- NWWS sequence
- nwws_processor.8392
- WMO heading
- XOUS55
- WMO data type
- CAP alert message XML (XO)
- WMO geography
- United States (US)
- WMO bulletin number
- 55
Event codes
| Name | Value |
|---|---|
| SAME | NWS |
| NationalWeatherService | FGY |
Parameters
| Name | Value |
|---|---|
| AWIPSidentifier | NPWBYZ |
| WMOidentifier | WWUS75 KBYZ 211057 |
| NWSheadline | DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM MDT THIS MORNING |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| VTEC | /O.NEW.KBYZ.FG.Y.0003.260921T1057Z-260921T1600Z/ |
| eventEndingTime | 2026-09-21T10:00:00-06:00 |
| BLOCKCHANNEL | CMAS |
Locations
Location data
- Musselshell County, MT
- Treasure County, MT
- Northern Stillwater
- Golden Valley County, MT
- Northern Big Horn
- Southern Rosebud
- Judith Gap
- Southern Big Horn
- Northern Sweet Grass
- Northern Carbon
- Melville Foothills
- Northeastern Yellowstone
- Southern Wheatland
- Southwestern Yellowstone
- Sheridan Foothills
| Name | Value |
|---|---|
| SAME | 030065 |
| SAME | 030103 |
| SAME | 030095 |
| SAME | 030037 |
| SAME | 030003 |
| SAME | 030087 |
| SAME | 030107 |
| SAME | 030097 |
| SAME | 030009 |
| SAME | 030111 |
| SAME | 056033 |
| UGC | MTZ029 |
| UGC | MTZ030 |
| UGC | MTZ034 |
| UGC | MTZ042 |
| UGC | MTZ057 |
| UGC | MTZ058 |
| UGC | MTZ063 |
| UGC | MTZ138 |
| UGC | MTZ141 |
| UGC | MTZ170 |
| UGC | MTZ172 |
| UGC | MTZ173 |
| UGC | MTZ228 |
| UGC | MTZ235 |
| UGC | WYZ199 |