MOAB, Utah | November 1, 2026 | 8:51 p.m. CST
Severe flooding across southeastern Utah has forced authorities to close approximately 49 miles of U.S. Highway 191 between Moab and Monticello, disrupting a major transportation corridor as the National Weather Service warns of dangerous and potentially historic flooding across portions of Utah and southwestern Colorado.
The Utah Department of Transportation confirmed Sunday evening that U.S. 191 is closed in both directions between mileposts 72 and 121 because of flooding.
The agency’s latest closure notice, updated at 5:22 p.m. Mountain Standard Time, directs motorists to delay travel or use alternate routes. The closure remained listed on UDOT’s public alert system during TWOSU News’ evening review.
The highway shutdown comes as the National Weather Service issued an unusually serious flood warning at 4:08 p.m. Sunday for southern San Juan County, Utah, and several counties in southwestern Colorado.
The weather service explicitly characterized conditions within the warning area as a “PARTICULARLY DANGEROUS SITUATION,” reporting that some roads had already washed out or collapsed.
The warning remains in effect until 4:15 p.m. Mountain Standard Time on Monday, November 2.
Major Commercial Transportation Corridor Closed
U.S. Highway 191 serves as an important north-south transportation route through southeastern Utah, connecting communities including Moab, Monticello, Blanding and Bluff.
Dashcam footage captures severe flooding along U.S. Highway 191 between Moab and Monticello, Utah, on November 1, 2026. Rising floodwaters inundated the roadway, disrupting traffic and prompting authorities to close approximately 49 miles of the highway as dangerous flooding swept across southeastern Utah.
The highway carries commercial freight, local deliveries, agricultural transportation and passenger traffic through an area where alternate paved highways can require substantial additional travel.
Sunday’s closure affects both directions of travel.
According to UDOT’s official notice, southbound traffic is restricted from milepost 121 toward milepost 72, while northbound traffic is restricted over the same stretch.
The restrictions affect approximately 49 miles of highway.
Earlier Sunday, Grand County issued an emergency notification identifying a closure between the Old Spanish Trail Arena south of Moab and Monticello.
Local reporting also documented flooding and debris near milepost 77, close to Monticello’s airport.
Commercial drivers approaching the area should not assume that a navigation application displaying U.S. 191 as a through route means the highway is passable.
UDOT has not provided a confirmed reopening time in its published closure alert.
The agency continues directing motorists to seek alternate routes or delay travel.
National Weather Service Warns of Historic Flooding
The National Weather Service’s Grand Junction office issued a major flood warning Sunday afternoon after reports of extensive rainfall, dangerous runoff and widespread roadway damage.
The warning covers portions of Archuleta, Dolores, La Plata, Montezuma and San Miguel counties in Colorado, along with southern San Juan County in Utah.
According to the agency, significant flooding was already occurring when the warning was issued.
Meteorologists reported that between 1.5 and 3 inches of rain had fallen across portions of the warned area by approximately 4 p.m.
Additional rainfall was expected to continue into Monday.
The National Weather Service reported that multiple roads were impassable and that some had suffered complete washouts or collapses.
The agency warned against unnecessary travel during the evening and overnight hours.
Its warning emphasized that nighttime conditions make flooding particularly dangerous because motorists may not be able to identify damaged pavement, washed-out roadways or rapidly moving water before encountering it.
The flood warning is a confirmed federal weather alert. It does not establish that every road within the warning area has suffered structural damage.
The weather service has not identified a specific reopening time for the affected highways. Those decisions remain with the responsible transportation and public-safety authorities.
Saturated Ground Increases Flooding Concerns
The November 1 flooding follows an exceptionally wet October across portions of southeastern Utah.
According to local reporting based on weather observation records, Monticello recorded approximately 8.69 inches of precipitation during October, exceeding previous October totals documented at the community’s historical weather stations.
The same reporting identified 4.6 inches at Arches National Park headquarters and 5.02 inches at Bluff.
Those measurements help explain why additional rainfall presents an elevated flooding risk.
The National Weather Service had already warned that saturated soils could produce rapid runoff as another storm system moved across the region.
Its flood watch forecast called for an additional 1 to 3 inches of rainfall across portions of southeastern Utah and southwestern Colorado between Sunday morning and Monday morning.
Ground that is already saturated cannot absorb additional rainfall as readily, increasing the potential for runoff into normally dry washes, creeks and low-lying roadways.
That concern is especially significant in the canyon country of southeastern Utah, where water can accumulate rapidly in drainage channels.
The weather service also warned that storm drains and roadside ditches could become obstructed by debris.
Flooding may therefore create hazards even on sections of pavement where water does not initially appear particularly deep.
Additional Road Closure Reported Near Bluff
The U.S. 191 closure is not the only transportation disruption affecting southeastern Utah.
UDOT also lists a closure involving State Route 162 near Bluff.
According to the department, both directions of SR-162 are closed between mileposts 0 and 2 near the junction with U.S. 191 because of flooding.
The restriction was initially reported October 31 and remained on the agency’s public alert list Sunday evening.
The additional closure further complicates travel planning for motorists and commercial operators attempting to move through the southern portion of San Juan County.
Drivers should verify that any proposed alternate route is open and suitable for their equipment before departing.
For commercial vehicles, that includes evaluating applicable weight restrictions, vehicle dimensions and roadway conditions.
A route that may be passable for passenger vehicles is not necessarily appropriate for a loaded tractor-trailer.
UDOT’s official traveler information service remains the authoritative source for Utah state highway closures and restrictions.
Flooding Extends Into Colorado and Arizona
The severe weather is affecting a much broader portion of the southwestern United States.
The Associated Press reported Sunday that flooding had prompted mandatory evacuations in communities across Arizona and Colorado.
In Pagosa Springs, Colorado, officials warned of potentially catastrophic flooding as the San Juan River continued rising.
Authorities restricted roadway access, while residents in vulnerable areas were urged to evacuate.
Additional flooding was reported around Sedona and Flagstaff, Arizona, where emergency responders encountered flooded neighborhoods and blocked roads.
The regional flooding is not confined to a single highway, community or state.
For commercial transportation, widespread closures can complicate route planning because drivers attempting to bypass one affected corridor may encounter additional restrictions elsewhere.
However, no verified estimate was available establishing the number of commercial trucks stranded, the amount of freight delayed or the economic cost of Sunday’s highway closures.
Those figures should not be assumed from the geographic extent of the storm.
Professional Drivers Urged to Avoid Flooded Highways
The danger associated with flooded roadways extends beyond the immediate possibility of a vehicle becoming stuck.
Moving water can undermine pavement, erode supporting soil and conceal structural damage beneath the surface.
For heavy commercial vehicles, the consequences can be particularly serious if a roadway shoulder, culvert or section of pavement has been compromised.
A truck’s weight does not make it immune to road failure or the forces of moving floodwater.
Drivers should never attempt to bypass a closure or enter standing or moving floodwater simply because another vehicle has crossed successfully.
Conditions can change quickly, and damage may be hidden beneath the water.
Motor carriers dispatching equipment through southeastern Utah should verify current conditions before directing drivers toward the affected area.
Dispatchers should also account for the possibility that reopening could depend on inspections, debris removal and repairs rather than rainfall ending.
The National Weather Service has specifically warned motorists to turn around when encountering flooded roads and to exercise additional caution after dark.
Those warnings apply to professional drivers as well as the general motoring public.
No Confirmed Reopening Time
As of Sunday evening, the Utah Department of Transportation continued listing the U.S. 191 closure between mileposts 72 and 121.
The National Weather Service’s major flood warning for southern San Juan County and portions of southwestern Colorado remains in effect through Monday afternoon.
Additional rainfall and runoff may continue affecting the region.
The confirmed development is that flooding has closed approximately 49 miles of U.S. Highway 191 between Moab and Monticello, while federal weather officials warn of dangerous flooding and extensive roadway damage across portions of the Four Corners region.
The precise extent of damage along the closed portion of U.S. 191 has not been established in the available official reports.
There is also no confirmed reopening time, no verified count of stranded commercial vehicles and no established estimate of the resulting freight transportation disruption.
For professional drivers operating through Utah, Arizona, Colorado and New Mexico, conditions warrant particular attention as the storm continues.
Current highway conditions should be checked directly through the applicable state transportation agencies before travel.
