Alert archive / Colorado / Flash Flood Watches in 2021
Flash Flood Watch 24, NWS Grand Junction, CO
NWS Grand Junction, CO issued this flash flood watch at Jul 28, 2021, 2:28 PM MDT for 18 counties in Colorado. It took effect at Jul 30, 2021, 11:00 AM MDT. It was in force for 13 hr.
The area
The counties it named.
The facts
- Issued
- Jul 28, 2021, 2:28 PM MDT (20:28 UTC)
- In effect from
- Jul 30, 2021, 11:00 AM MDT
- Expired
- Jul 31, 2021, 12:00 AM MDT
- In force
- 13 hr
- Issued by
- NWS Grand Junction, CO
- Flood severity
- None
Counties Archuleta County, CO, Delta County, CO, Dolores County, CO, Eagle County, CO, Garfield County, CO, Gunnison County, CO, Hinsdale County, CO, La Plata County, CO, Mesa County, CO, Moffat County, CO, Montezuma County, CO, Montrose County, CO, Ouray County, CO, Pitkin County, CO, Rio Blanco County, CO, Routt County, CO, San Juan County, CO, San Miguel County, CO
The radar
The Grand Junction radar (KGJX), 60 km from the middle of the area, began a volume at 20:30 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What forecasters said that day
The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Grand Junction, CO wrote its last area forecast discussion before this flash flood watch went out at Jul 28, 1:59 PM MDT, 29 minutes earlier.
Area forecast discussion, Jul 28, 1:59 PM MDT, 29 minutes before
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</html>Hazardous weather outlook, Jul 28, 4:10 AM MDT, 10 hours 18 minutes before
Hazardous Weather Outlook National Weather Service Grand Junction CO 410 AM MDT Wed Jul 28 2021 COZ001>014-017>023-UTZ022>025-027>029-291015- Lower Yampa River Basin-Central Yampa River Basin- Roan and Tavaputs Plateaus-Elkhead and Park Mountains- Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor- Central Colorado River Basin-Grand and Battlement Mesas- Gore and Elk Mountains/Central Mountain Valleys- Central Gunnison and Uncompahgre River Basin- West Elk and Sawatch Mountains-Flat Tops- Upper Gunnison River Valley-Uncompahgre Plateau and Dallas Divide- Northwest San Juan Mountains-Southwest San Juan Mountains- Paradox Valley/Lower Dolores River- Four Corners/Upper Dolores River-Animas River Basin- San Juan River Basin-Southeast Utah-Eastern Uinta Mountains- Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat- La Sal and Abajo Mountains-Canyonlands/Natural Bridges- 410 AM MDT Wed Jul 28 2021 This hazardous weather outlook is for eastern Utah and western Colorado. .DAY ONE...Today and Tonight Another round of scattered showers and thunderstorms will occur today, beginning over the high terrain by late morning and drifting into lower elevations late afternoon into the evening. Lightning and heavy rainfall will be the main threats along with gusty outflow winds. A few storms will be capable of producing locally heavy rainfall over portions of southwest Colorado and southeast Utah which could lead to flooding. The thunderstorm threat should end early Thursday morning. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday Daily scattered to numerous showers and thunderstorms can be expected each day with monsoon moisture entrenched across the area. Storm activity and coverage looks to increase late this week into the weekend with better potential for storms to last through the overnight hours. Moderate to heavy rain, gusty winds and lightning will be the primary threats with storms. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed.
In the hours before
Local storm report, Jul 28, 8:53 AM MDT, 5 hours 35 minutes before
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</html>Local storm report, Jul 28, 12:30 PM MDT, 1 hour 58 minutes before
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</html>The office that day
Everything else NWS Grand Junction, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 6:16 PM MDT | Special Weather Statement | GJT | La Plata | 29 min |
| Jul 27, 7:28 PM MDT | Areal Flood Advisory | GJT | La Plata | 3 hr |
| Jul 27, 8:58 PM MDT | Special Weather Statement | GJT | Montezuma | 47 min |
| Jul 28, 1:54 PM MDT | Areal Flood Advisory | GJT | Dolores, Montezuma | 3 hr |
| Jul 28, 2:08 PM MDT | Flash Flood Watch | GJT | Eagle, Garfield, Moffat, Pitkin, Rio Blanco, Routt | 8 hr |
| Jul 28, 2:14 PM MDT | Flash Flood Warning | GJT | San Miguel | 3 hr |
| Jul 28, 2:28 PM MDT | Flash Flood Watch | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more | 34 hr |
| Jul 28, 2:35 PM MDT | Areal Flood Advisory | GJT | Rio Blanco | 3 hr |
| Jul 28, 3:08 PM MDT | Areal Flood Advisory | GJT | Rio Blanco | 3 hr |
| Jul 28, 3:14 PM MDT | Special Weather Statement | GJT | Rio Blanco | 46 min |
| Jul 28, 3:19 PM MDT | Flash Flood Warning | GJT | San Miguel | 3 hr |
| Jul 28, 3:40 PM MDT | Special Weather Statement | GJT | Ouray | 50 min |
| Jul 28, 3:47 PM MDT | Flash Flood Warning | GJT | Rio Blanco | 2 hr |
| Jul 28, 3:56 PM MDT | Special Weather Statement | GJT | Archuleta | 49 min |
| Jul 28, 4:04 PM MDT | Special Weather Statement | GJT | La Plata | 26 min |
| Jul 28, 4:08 PM MDT | Special Weather Statement | GJT | Montrose | 22 min |
| Jul 28, 4:28 PM MDT | Special Weather Statement | GJT | Garfield | 32 min |
| Jul 28, 4:47 PM MDT | Areal Flood Advisory | GJT | Mesa | 3 hr |
| Jul 28, 5:07 PM MDT | Special Weather Statement | GJT | 23 min | |
| Jul 28, 5:22 PM MDT | Flash Flood Warning | GJT | Mesa, Montrose | 77 min |
| Jul 28, 5:25 PM MDT | Severe Thunderstorm Warning | GJT | Mesa, Montrose | 35 min |
| Jul 28, 5:31 PM MDT | Severe Thunderstorm Warning | GJT | Mesa | 29 min |
| Jul 28, 3:17 PM MDT | Flash Flood Warning | GJT | Grand, San Juan | 5 hr |
Nearby
Flash Flood Watches in Colorado, 2021Every flash flood watch in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.