Montezuma storm history

At approximately 5:47PM MDT the KCEZ ASOS at Cortez-Montezuma County Airport recorded a wind gust to 60 mph, with other nearby gusts recording 45-55 mph. There was a thunderstorm nearby at the time, marking this as a thunderstorm wind gust. No reports of damages, injuries, or fat…

Heavy Rainfall just east, northeast of Towaoc resulted in debris flows across Highline ditch/canal. Debris flow with mud and large boulders were noted near mile marker 29 on Highway 491 (between 21 Rd and B Rd).

Heavy rainfall to the northeast of Mesa Verde National Park fell on the afternoon of August 25th, with estimated rainfall rates in excess of 2 inches per hour for around 10 minutes. That puts the rainfall total along County Road 41, in this area, at 0.25-0.35 inches. The debris f…

Emergency manager for Montezuma County reported a large boulder loosened from multiple consecutive days of heavy rain having fallen onto Road G, near the intersection of Road 21, about 2.5 miles from Cortez-Montezuma County Airport. This large boulder necessitated heavy machinery…

With the increased monsoonal moisture at midlevels, scattered showers and thunderstorms built on the higher terrain near Cortez. Dry surface levels acted to enhance outflow winds as storms moved overhead. These storms eventually moved over Cortez, they produced gusts to 58 mph at…

The emergency manager reported that heavy rain from thunderstorms led to minor flooding across portions of Cortez, including some basements in homes along Highway 491 and Veterans Park.

The emergency manager reported flooding at the intersection of 25 and L Roads northeast of downtown Cortez as a result of heavy rain from thunderstorms.

The emergency manager reported several inches of rain running through the streets of Cortez as a result of heavy rain from thunderstorms. The Cooperative Observer measured 0.55 inches of rain in 35 minutes.

A peak wind gust of 62 MPH was measured by the automated weather station at the Cortez Municipal Airport.

Rapid snowmelt from the Dolores River led to various drainages breaching their banks. This resulted in flooded downtown residential buildings in the town of Dolores. The water also flooded streets, some yards, and school playgrounds. Flood waters did not recede for several days.

Rapid snowmelt and rain caused flooding and the closure of Colorado Highway 184 near its intersection with U.S. Highway 491. Heavy rain and rapid snowmelt overwhelmed a culvert which failed, contributing to the backup of the culvert and subsequent flooding.

Localized flooding occurred at County Road 23.6 as a result of heavy rain from thunderstorms.

Localized flooding occurred at the intersection of 1st Street and South Maple Street as a result of heavy rain from thunderstorms.

Heavy rain from thunderstorms resulted in mud and debris on Road BB near Pleasant View, between roads 12 and 13.

Wind gusts around 60 mph were estimated by the Cooperative Observer in Mesa Verde National Park.

Hail measured to be the size of quarters accumulated on the road in Mesa Verde National Park. The accumulation was estimated to be 6 inches deep. The hail dimpled at least two vehicles.

A peak wind gust of 58 MPH was measured by the automated weather station at the Cortez Municipal Airport.

A peak wind gust of 71 MPH was measured by the automated weather station at the Cortez Municipal Airport.

A severe thunderstorm produced large hail measured to be the size of quarters southeast of Stoner.

A severe thunderstorm produced large hail measured to be the size of quarters west-northwest of Dolores.

A peak wind gust of 66 mph was measured by the automated weather station at the Cortez Municipal Airport.

The automated weather station at the Cortez-Montezuma Airport measured a peak wind gust of 61 mph from outflow winds associated with a strong thunderstorm.

Heavy rain from thunderstorms produced minor flooding across Colorado Highway 184 and 27.8 road. Nearby CoCoRaHS rainfall reports ranged from 0.70 to 0.90 of an inch.

Thunderstorms moving over the area produced 1.55 inches of rain in an hour and a half. Minor street and building flooding occurred with the first floor of a low lying apartment receiving some water.

Thunderstorms moved over the area and produced 1.55 inches of rain within an hour and a half. Street flooding occurred as the storm drains were not able to handle the volume of rainfall. Water backed up into an area next to the flooded roads and flowed into the ground level floor…

Within 50 minutes, showers and thunderstorms produced 1.29 inches of rain.

Within 30 minutes, 0.85 of an inch of rain fell near Yellow Jacket, Colorado.

Morning thunderstorms produced frequent lightning which ignited numerous tree fires and blasted a tree which fell across electrical lines. Lightning also sparked a structure fire on South Madison Street in Cortez.

About 3 miles east of Cortez a storm total of 1.31 inches of rain was measured.

Heavy rain resulted in minor flooding across County Roads F and G near Highway 160 which were closed for a short period of time. At the Cortez Municipal Airport a storm total of 1.67 inches or rain was measured.

In Cortez 0.72 of an inch of rain was measured within a 4 hour period.

About 3 miles northwest of Mancos 1.74 inches of rain was measured within a 24-hour period, with 0.80 of that amount having fallen within 40 minutes.

Showers and thunderstorms produced heavy rainfall in Montezuma County with 2.20 inches measured northeast of Yellow Jacket over a 36 hour period. Standing water was found in the observer's yard the morning of July 2nd.

A persistent funnel cloud was seen just northeast of Cortez and traveled northeast about four miles before it dissipated over the Summit Ridge area. The funnel clouds was photographed and reported by many people.

An intense thunderstorm produced strong outflow winds which destroyed a farm shed at a location between Mancos and Cortez.

Strong outflow winds from a thunderstorm combined with winds associated with a nearby cold front to produce extensive damage on several farms within about a two-mile radius of the location with the heaviest damage. At the location with the strongest estimated winds, a metal barn …

The hail damaged gardens and orchards as it was accompanied by 50 mph winds which snapped off 4 inch diameter tree limbs.

A flash flood came down a drainage through a residence with water topping bridges on the property.

A car was washed 15 feet off Highway 160 into a ditch by flash flood waters. Mud and debris was also reported at mile marker 29 at the intersection with County Road 21.

Runoff from heavy rainfall ran over 6 inches deep across the intersection of Colorado Highway 184 and County Road 40.

A power pole was struck by lightning and started on fire.

A lightning strike in Mesa Verde National Park caused a wildfire that was quickly contained. Other fires were also started by lightning in Montezuma County, including a wildfire on Sleeping Ute Mountain.

Heavy rainfall rates of around a half of an inch per hour caused ponding of water on area roadways.

Runoff from heavy rainfall closed the intersection of highways 491 and 160 due to fast flowing water in excess of 6 inches deep flowing over the roadway.

Heavy rainfall was reported over Mesa Verde National Park with hail to the size of nickles reported on Weathering Mesa.

Outflow winds from a thunderstorm resulted in violent shaking of a mobile home. No damage was reported.

Hail the size of ping pong balls pelted the area near the Anasazi Heritage Center.

One-inch diameter hail tore a lot of leaves off trees.