Alert archive / Colorado / Flash Flood Watches in 2021
Flash Flood Watch 12, NWS Pueblo, CO
NWS Pueblo, CO issued this flash flood watch at Jul 21, 2021, 2:57 AM MDT for 11 counties in Colorado. It took effect at Jul 21, 2021, 12:00 PM MDT. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Jul 21, 2021, 2:57 AM MDT (08:57 UTC)
- In effect from
- Jul 21, 2021, 12:00 PM MDT
- Expired
- Jul 21, 2021, 9:52 PM MDT
- In force
- 10 hr
- Issued by
- NWS Pueblo, CO
- Flood severity
- None
Counties Alamosa County, CO, Chaffee County, CO, Conejos County, CO, Costilla County, CO, Custer County, CO, Fremont County, CO, Huerfano County, CO, Lake County, CO, Mineral County, CO, Rio Grande County, CO, Saguache County, CO
The radar
The Pueblo radar (KPUX), 163 km from the middle of the area, began a volume at 08:58 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.
The nearest sounding before it
Grand Junction, CO (KGJT), launched 00:00Z, 9.0 hours before the alert went out and 258 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 302 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 3225 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
140 WGUS65 KPUB 210857 FFAPUB URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Pueblo CO 257 AM MDT Wed Jul 21 2021 COZ060-061-064>068-072-073-211700- /O.NEW.KPUB.FF.A.0012.210721T1800Z-210722T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Eastern Sawatch Mountains Above 11000 Feet-Western Chaffee County Between 9000 and 11000 Feet-Saguache County West of Continental Divide Below 10000 Feet-Saguache County East of Continental Divide Below 10000 Feet-La Garita Mountains Above 10000 Feet-Upper Rio Grande Valley/Eastern San Juan Mountains Below 10000 Feet-Eastern San Juan Mountains Above 10000 Feet-Northern Sangre de Cristo Mountains Between 8500 And 11000 Feet-Northern Sangre de Cristo Mountains Above 11000 Feet- Including the cities of Cumbres Pass, St Elmo, South Fork, Wolf Creek Pass, Creede, La Veta Pass, Poncha Pass, Sargents, Bonanza, Granite, Blanca Peak, North Pass, and Alpine 257 AM MDT Wed Jul 21 2021 ...FLASH FLOOD WATCH IN EFFECT FROM NOON MDT TODAY THROUGH THIS EVENING... The National Weather Service in Pueblo has issued a * Flash Flood Watch for portions of central Colorado, south central Colorado and southeast Colorado, including the following areas, in central Colorado, the Eastern Sawatch Mountains, La Garita Mountains, western Saguache County, and Western Chaffee County Between 9000 and 11000 Feet. In south central Colorado, Eastern San Juan Mountains and Upper Rio Grande Valley. In southeast Colorado, Northern Sangre de Cristo Mountains. * From Noon MDT today through this evening. * Slow moving thunderstorms capable of producing locally heavy rainfall and flash flooding will be possible this afternoon and evening across the watch area. Burn scars, such as the Hayden Pass and Decker, will be particularly susceptible today, as well as areas which have received recent heavy rainfall. * Mud and debris flows will be possible in and near burn scars. Rock slides and quick rises in creeks and streams will be possible with heavy rainfall in steep terrain. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ EP
3 follow-up statements
244 WGUS65 KPUB 211700 FFAPUB Flood Watch National Weather Service Pueblo CO 1100 AM MDT Wed Jul 21 2021 .Areas west into the higher elevations have been seeing several periods of intense rainfall over the last few weeks, and the ground remains fairly saturated, raising concern for debris flow risk areas, such as the burn scars and recent mudslide areas. Storms are expected to start after midday, increasing in coverage and intensity after 5pm or so and lasting into the overnight hours. COZ060-061-064>068-072-073-220600- /O.CON.KPUB.FF.A.0012.210721T1800Z-210722T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Eastern Sawatch Mountains Above 11000 Feet-Western Chaffee County Between 9000 and 11000 Feet-Saguache County West of Continental Divide Below 10000 Feet-Saguache County East of Continental Divide Below 10000 Feet-La Garita Mountains Above 10000 Feet-Upper Rio Grande Valley/Eastern San Juan Mountains Below 10000 Feet-Eastern San Juan Mountains Above 10000 Feet-Northern Sangre de Cristo Mountains Between 8500 And 11000 Feet-Northern Sangre de Cristo Mountains Above 11000 Feet- Including the cities of Cumbres Pass, St Elmo, South Fork, Wolf Creek Pass, Creede, La Veta Pass, Poncha Pass, Sargents, Bonanza, Granite, Blanca Peak, North Pass, and Alpine 1100 AM MDT Wed Jul 21 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING... The Flash Flood Watch continues for * Portions of central Colorado, south central Colorado and southeast Colorado, including the following areas, in central Colorado, Eastern Sawatch Mountains Above 11000 Feet, La Garita Mountains Above 10000 Feet, Saguache County East of Continental Divide Below 10000 Feet, Saguache County West of Continental Divide Below 10000 Feet and Western Chaffee County Between 9000 and 11000 Feet. In south central Colorado, Eastern San Juan Mountains Above 10000 Feet and Upper Rio Grande Valley/Eastern San Juan Mountains Below 10000 Feet. In southeast Colorado, Northern Sangre de Cristo Mountains Above 11000 Feet and Northern Sangre de Cristo Mountains Between 8500 And 11000 Feet. * Through this evening. * Slow moving thunderstorms capable of producing locally heavy rainfall and flash flooding will be possible this afternoon and evening across the watch area. Burn scars, such as the Hayden Pass and Decker, will be particularly susceptible today, as well as areas which have received recent heavy rainfall. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ MG
800 WGUS65 KPUB 212044 FFAPUB Flood Watch National Weather Service Pueblo CO 244 PM MDT Wed Jul 21 2021 .Areas west into the higher elevations have been seeing several periods of intense rainfall over the last few weeks, and the ground remains fairly saturated, raising concern for debris flow risk areas, such as the burn scars and recent mudslide areas. Storms are expected to increase in coverage and intensity after 5pm or so and last into the overnight hours. COZ060-061-064>068-072-073-220445- /O.CON.KPUB.FF.A.0012.000000T0000Z-210722T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Eastern Sawatch Mountains Above 11000 Feet-Western Chaffee County Between 9000 and 11000 Feet-Saguache County West of Continental Divide Below 10000 Feet-Saguache County East of Continental Divide Below 10000 Feet-La Garita Mountains Above 10000 Feet-Upper Rio Grande Valley/Eastern San Juan Mountains Below 10000 Feet-Eastern San Juan Mountains Above 10000 Feet-Northern Sangre de Cristo Mountains Between 8500 And 11000 Feet-Northern Sangre de Cristo Mountains Above 11000 Feet- Including the cities of Cumbres Pass, St Elmo, South Fork, Wolf Creek Pass, Creede, La Veta Pass, Poncha Pass, Sargents, Bonanza, Granite, Blanca Peak, North Pass, and Alpine 244 PM MDT Wed Jul 21 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... The Flash Flood Watch continues for * Portions of central Colorado, south central Colorado and southeast Colorado, including the following areas, in central Colorado, Eastern Sawatch Mountains Above 11000 Feet, La Garita Mountains Above 10000 Feet, Saguache County East of Continental Divide Below 10000 Feet, Saguache County West of Continental Divide Below 10000 Feet and Western Chaffee County Between 9000 and 11000 Feet. In south central Colorado, Eastern San Juan Mountains Above 10000 Feet and Upper Rio Grande Valley/Eastern San Juan Mountains Below 10000 Feet. In southeast Colorado, Northern Sangre de Cristo Mountains Above 11000 Feet and Northern Sangre de Cristo Mountains Between 8500 And 11000 Feet. * Until Midnight MDT tonight. * Slow moving thunderstorms capable of producing locally heavy rainfall and flash flooding will be continue this afternoon and evening across the watch area. Burn scars, such as the Hayden Pass and Decker, will be particularly susceptible today, as well as areas which have received recent heavy rainfall. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ MG
660 WGUS65 KPUB 220352 FFAPUB Flood Watch National Weather Service Pueblo CO 952 PM MDT Wed Jul 21 2021 COZ060-061-064>068-072-073-220500- /O.CAN.KPUB.FF.A.0012.000000T0000Z-210722T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Eastern Sawatch Mountains Above 11000 Feet-Western Chaffee County Between 9000 and 11000 Feet-Saguache County West of Continental Divide Below 10000 Feet-Saguache County East of Continental Divide Below 10000 Feet-La Garita Mountains Above 10000 Feet-Upper Rio Grande Valley/Eastern San Juan Mountains Below 10000 Feet-Eastern San Juan Mountains Above 10000 Feet-Northern Sangre de Cristo Mountains Between 8500 And 11000 Feet-Northern Sangre de Cristo Mountains Above 11000 Feet- Including the cities of Cumbres Pass, St Elmo, South Fork, Wolf Creek Pass, Creede, La Veta Pass, Poncha Pass, Sargents, Bonanza, Granite, Blanca Peak, North Pass, and Alpine 952 PM MDT Wed Jul 21 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for portions of central Colorado, south central Colorado and southeast Colorado, including the following areas, in central Colorado, Eastern Sawatch Mountains Above 11000 Feet, La Garita Mountains Above 10000 Feet, Saguache County East of Continental Divide Below 10000 Feet, Saguache County West of Continental Divide Below 10000 Feet and Western Chaffee County Between 9000 and 11000 Feet. In south central Colorado, Eastern San Juan Mountains Above 10000 Feet and Upper Rio Grande Valley/Eastern San Juan Mountains Below 10000 Feet. In southeast Colorado, Northern Sangre de Cristo Mountains Above 11000 Feet and Northern Sangre de Cristo Mountains Between 8500 And 11000 Feet has been cancelled. The Flood Watch is cancelled. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$ MW
The office that day
Everything else NWS Pueblo, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 7:03 PM MDT | Special Weather Statement | PUB | Chaffee | 12 min |
| Jul 21, 1:14 PM MDT | Special Weather Statement | PUB | Costilla | 61 min |
| Jul 21, 1:21 PM MDT | Special Weather Statement | PUB | Conejos | 54 min |
| Jul 21, 2:02 PM MDT | Flash Flood Warning | PUB | Chaffee | 3 hr |
| Jul 21, 2:25 PM MDT | Special Weather Statement | PUB | Alamosa | 35 min |
| Jul 21, 2:34 PM MDT | Special Weather Statement | PUB | Mineral | 56 min |
| Jul 21, 2:59 PM MDT | Special Weather Statement | PUB | Teller | 46 min |
| Jul 21, 3:38 PM MDT | Flash Flood Warning | PUB | Fremont | 2 hr |
| Jul 21, 3:40 PM MDT | Special Weather Statement | PUB | Custer | 35 min |
| Jul 21, 3:44 PM MDT | Severe Thunderstorm Warning | PUB | Custer | 33 min |
| Jul 21, 3:57 PM MDT | Special Weather Statement | PUB | Teller | 48 min |
| Jul 21, 4:08 PM MDT | Flash Flood Warning | PUB | Custer | 3 hr |
| Jul 21, 5:01 PM MDT | Special Weather Statement | PUB | Saguache | 44 min |
| Jul 21, 5:43 PM MDT | Special Weather Statement | PUB | El Paso | 47 min |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.