65
Recorded events
3
Direct deaths
0
Direct injuries
$5.0M
Property damage
Flash Flood in San Miguel County, New Mexico: 65 recorded events between 1997 and 2025. The strongest on record measured 0. That places the county #389 nationally and #9 statewide for this hazard.
Decade by decade
Flash Flood in San Miguel County, New Mexico: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flash flood in San Miguel County is the 2020s, when 41 of the county's 65 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.
Within the San Miguel County archive, flash flood makes up 15.6% of all recorded severe weather across 9 hazard types. Nationally the county sits at #389 for this hazard and #9 within New Mexico, putting it in the 87.2 percentile of all U.S. counties.
Seasonality
Events by month
Jul is the peak month for flash flood in San Miguel County with 22 recorded events, while Jan is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.
Significant events
Deadliest on record
| Date | Location | Scale | Deaths | Injuries | Damage |
|---|---|---|---|---|---|
| Jul 21, 2022 | PENDARIES | 0 | 3 | 0 | $2.0M |
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Jul 18, 2025 | MANUELITAS | 0 | $0 |
| May 31, 2025 | SAN ANTONIO | 0 | $0 |
| Oct 20, 2024 | MINERAL HILL | 0 | $0 |
| Sep 5, 2024 | MANUELITAS | 0 | $0 |
| Sep 5, 2024 | MANUELITAS | 0 | $0 |
| Aug 8, 2024 | ROCIADA | 0 | $100K |
| Jul 18, 2024 | LAS TUSAS | 0 | $0 |
| Jul 8, 2024 | LAS VEGAS | 0 | $0 |
| Jun 30, 2024 | SAN ANTONIO | 0 | $0 |
| Jun 30, 2024 | SAN GERONIMO | 0 | $0 |
Other hazards here
More from San Miguel County
- Hail 281
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Flash flooding from heavy rains closed NM Highway 65 from mile markers 2 to 4 or one mile south of Montezuma where culverts were washed out. Flowing water 1 to 3 feet deep also reported over El Llano Road, Cinder Road, Palo Verde Road and at the intersection of 7th Street and Mills Avenue. Road closures were also reported along State Road 65 at Campus and El Camino, as well as along 8th Street north of Mills Avenue. Robertson Cardinal football field was completely covered in standing water. The Las Vegas Water Treatment Plant also flooded. A mandatory evacuation order was issued at 9:54pm MDT for this area due to the dangerous flooding across Las Vegas to Montezuma. Damage is an estimated given very limited information.
A nearly stationary thunderstorm over El Porvenir produced over two inches of rainfall on this area of the Calf Canyon burn scar. This caused flash flooding on Beaver Creek and Gallinas Creek with significant debris found on Highway 65. The IMET on duty found several locations along Highway 65 that were covered in tree debris, rocks, and mud. Some buildings along the roadway were inundated with a couple of feet of water. The IMET also noted that water had threatened homes in the area as well, but these homes seemed to have been protected with sandbagging. Damages are estimated.
Heavy rain in central San Miguel county produced rock and mud slides which closed Highway 104 about 15 miles west of Trujillo and washed away much of the road material along a 2.6 miles stretch of County Road C-51-A near Trujillo. Several homes in Trujillo were also flooded by runoff.
Quick answers
Frequently asked
How many flash flood events are on record in San Miguel County, New Mexico?
65 flash flood events are recorded in San Miguel County between 1997 and 2025, causing 3 direct deaths.
What is the strongest flash flood recorded in San Miguel County?
The strongest flash flood on record in San Miguel County measured 0.
Where does the flash flood data for San Miguel County come from?
All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.
Cite this page
“Flash Flood in San Miguel County, New Mexico.” Severe Weather History. severeweatherhistory.com/county/new-mexico/san-miguel-county/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.