NWS Salt Lake City UTFW.W 0018August 2, 2026
Red Flag Warning: San Rafael Swell, UT
The National Weather Service office in Salt Lake City issued a red flag warning for San Rafael Swell in Utah, which was in force until 10:00 p.m. local time on August 3. It was the 18th red flag warning the NWS office in Salt Lake City issued in 2026. Utah had 4 red flag warnings in August 2026, against 6 in an average August of 2008-2025 (Utah's red flag warnings by year).
ExpiredWarning
In force for 10 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Salt Lake City UT
- Area
- San Rafael Swell
- State
- Utah
- Level
- Warning
- Issued
- 3:21 a.m. MDT, August 2, 2026
- In force from
- 12:00 p.m. MDT, August 3, 2026
- Expires
- 10:00 p.m. MDT, August 3, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Expected
- VTEC event
- KSLC FW.W 0018
- Official source
- National Weather Service: the notice at its source
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
The National Weather Service in Salt Lake City has issued a Red Flag Warning for wind and low relative humidity, which is in effect from noon to 10 PM MDT Monday. * AFFECTED AREA...Fire Weather Zone 489 San Rafael Swell. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 8 percent. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly.
What the agency told people to do
A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.