CDOT: Precipitation in Grizzly Creek burn area caused mudslides in Glenwood Canyon

Colorado Department of Transportation

July 21, 6 am – UPDATE: I-70 in Glenwood Canyon is closed at Exit 87 (West Rifle), Exit (109) (Canyon Creek), Exit 116 (Glenwood Springs) and Exit 133 (Dotsero), due to mud and rocks on roadway near the Grizzly Creek burn scar. Local eastbound traffic on I-70 is allowed east of Exit 109 to access Glenwood Springs and the Highway 82 corridor, but motorists should expect delays. Safety closure between Exit 87 – US 6; Rifle and Exit 133 – Dotsero.

CDOT asks that motorists use the recommended northern alternate route when detouring around the closure. Westbound motorists from the Denver metro area should exit I-70 at Exit 205 (Silverthorne) and travel north on Colorado Highway 9 towards Kremmling. Travelers will continue west on US Highway 40 and then south on CO 13 to complete the alternate route and return to westbound I-70 at Rifle (Exit 90). Eastbound travelers can detour using the same route in reverse.

July 20, 11:03 pm – UPDATE: CDOT crews are monitoring and assessing several mudslides on I-70 in Glenwood Canyon. Safety is the top priority tonight, and crews will begin clean up once it is safe to do so. All interstate closure status updates will be posted at cotrip.org and 511. CDOT social media channels and this feed may not be updated overnight.

National Weather Service

July 20, 10:20 pm
Event: Flash Flood Warning alert:

NWS Flash Flood Warning extended alert

The National Weather Service in Grand Junction has extended the
* Flash Flood Warning for…the Grizzly Creek Fire Burn Area in…western Eagle County in west central Colorado… East Central Garfield County in west central Colorado…
* Until 11:30 PM MDT.
* At 10:20 PM MDT, Doppler radar indicated thunderstorms producing heavy rain over the Grizzly Creek Fire Burn Area. The expected rainfall rate is 0.2 to 0.5 inches in 1 hour. Additional rainfall amounts of 0.2 to 0.5 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly.

Excessive rainfall over the burn scar will result in debris flow moving through the Glenwood Canyon area. The debris flow can consist of rock, mud, vegetation and other loose materials.

HAZARD…Life threatening flash flooding. Thunderstorms producing flash flooding in and around the Grizzly Creek Fire Burn Area.
SOURCE…CDOT has reported multiple mudslides over I-70 and additional rain is developing around the area.
IMPACT…Life threatening flash flooding of areas in and around the Grizzly Creek Fire Burn Area.
* Some locations that will experience flash flooding include… Glenwood Springs and Shoshone.

FLASH FLOOD…RADAR INDICATED FLASH FLOOD DAMAGE THREAT…CONSIDERABLE EXPECTED RAINFALL…0.2-0.5 INCHES IN 1 HOUR

Instructions:This is a life threatening situation. Heavy rainfall will cause extensive and severe flash flooding of creeks…streams…and ditches in the Grizzly Creek Fire Burn Area. Severe debris flows can also be anticipated across roads. Roads and driveways may be washed away in places. If you encounter flood waters…climb to safety. Turn around, don`t drown when encountering flooded roads. Most flood deaths occur in vehicles.

Colorado Department of Transportation

July 20; 9:06 pm: I-70 Glenwood Canyon CLOSED – 8:45 PM (7/20) – I-70 in Glenwood Canyon is closing due to a Flash Flood Warning for the Grizzly Creek burn scar area. **Updates will continue to be posted to cotrip.org, CDOT’s Twitter page and available by dialing 511.**

Closure points for all traffic are Exit 133 (Dotsero), Exit 116 (Glenwood Springs), Exit 109 (Canyon Creek) and Exit 87 (West Rifle). The I-70 closure will stay in place through the Warning and then crews will review whether the canyon is safe to reopen. At this time the Flash Flood Warning is anticipated to end at 10:30 pm. Eastbound traffic headed to the Roaring Fork Valley may have limited access at Exit 109 or on US 6, but should plan for delays during the first hour of the closure.

CDOT asks that motorists use the recommended northern alternate route when detouring around the closure. Westbound motorists from the Denver metro area should exit I-70 at Exit 205 (Silverthorne) and travel north on Colorado Highway 9 towards Kremmling. Travelers will continue west on US Highway 40 and then south on CO 13 to complete the alternate route and return to westbound I-70 at Rifle (Exit 90). Eastbound travelers can detour using the same route in reverse.

July 20; 8:58 pm: I-70 Glenwood Canyon CLOSED due to a Flash Flood Warning for the Grizzly Creek burn scar area. CDOT updates will continue to be posted to cotrip.org and are available by dialing 511. Closure points are Exit 133, Exit 116, Exit 109 and Exit 87 (West Rifle).

Garco911

July 20; 9:04 pm: The existing closure on I-70 has been moved from mile-marker 116 eastbound, Glenwood Springs, to mile-marker 87, West Rifle. Local traffic can get through. Non-local traffic should divert to Hwy 13 for detour.

July 20; 8:48 pm: I-70 is closed between mile markers 116 and 131 both directions, Glenwood Springs and Dotsero, due to a flash flood warning.

National Weather Service

Event: Flash Flood Warning alert
July 20, 8:36 pm
The National Weather Service in Grand Junction has issued a
* Flash Flood Warning for… The Grizzly Creek Fire Burn Area in… Western Eagle County in west central Colorado… East Central Garfield County in west central Colorado…

Flash Flood Warning on NWS

* Until 10:30 PM MDT
* At 8:36 PM MDT, Doppler radar indicated thunderstorms producing heavy rain over the Grizzly Creek Fire Burn Area. The expected rainfall rate is 0.2 to 0.5 inches in 1 hour. Additional rainfall amounts of 0.2 to 0.5 inches are possible in the warned area.
Flash flooding is ongoing or expected to begin shortly. Excessive rainfall over the burn scar will result in debris flow moving through the Glenwood Canyon area. The debris flow can consist of rock, mud, vegetation and other loose materials.
HAZARD…Life threatening flash flooding. Thunderstorms producing flash flooding in and around the Grizzly Creek Fire Burn Area. SOURCE…Radar.
IMPACT…Life threatening flash flooding of areas in and around the Grizzly Creek Fire Burn Area.

* Some locations that will experience flash flooding include… Glenwood Springs and Shoshone.

FLASH FLOOD…RADAR INDICATED FLASH FLOOD DAMAGE THREAT…CONSIDERABLE EXPECTED RAINFALL…0.2-0.5 INCHES IN 1 HOUR.

Instructions:This is a life threatening situation. Heavy rainfall will cause extensive and severe flash flooding of creeks…streams…and ditches in the Grizzly Creek Fire Burn Area. Severe debris flows can also be anticipated across roads. Roads and driveways may be washed away in places. If you encounter flood waters…climb to safety. Turn around, don`t drown when encountering flooded roads. Most flood deaths occur in vehicles.

Colorado Department of Transportation

July 20, 2021, 12:53 p.m.: Rest areas and the recreation path are closed along I-70, east and west bound lanes, at Grizzly Creek (mile marker 121) and Shoshone (mm123) due to forecast precipitation over the Grizzly Creek burn scar.

National Weather Service

July 20, 2021, 12:37 p.m.: A flash flood watch is in effect for the Grizzly Creek burn area in Glenwood Canyon until 9 p.m. this evening. The watch covers the Grizzly Creek Fire burn area in portions of northwest Colorado and west central Colorado, including the following areas: in northwest Colorado, the Flat Tops Wilderness; in west central
Colorado, Central Colorado River Basin and Gore and Elk mountains/Central Mountain valleys.

National Weather Service meteorologists are forecasting possible heavy rainfall over the Grizzly Creek Fire burn area, which may lead to flash flooding and debris flows.

PRECAUTIONARY/PREPAREDNESS ACTIONS

You should monitor later forecasts and be prepared to take action should flash flood warnings be issued.

CDOT: Precipitation in Grizzly Creek burn area caused mudslides in Glenwood Canyon