Alert archive / Colorado / Flash Flood Watches in 2021
Flash Flood Watch 22, NWS Pueblo, CO
NWS Pueblo, CO issued this flash flood watch at Aug 31, 2021, 3:11 AM MDT for 12 counties in Colorado. It took effect at Sep 1, 2021, 10:00 AM MDT. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Aug 31, 2021, 3:11 AM MDT (09:11 UTC)
- In effect from
- Sep 1, 2021, 10:00 AM MDT
- Expired
- Sep 1, 2021, 9:28 PM MDT
- In force
- 11 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, Las Animas County, CO, Mineral County, CO, Rio Grande County, CO, Saguache County, CO
The radar
The Pueblo radar (KPUX), 152 km from the middle of the area, began a volume at 09:14 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, 9.2 hours before the alert went out and 273 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
- 32 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 3691 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 25 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
028 WGUS65 KPUB 310911 FFAPUB URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Pueblo CO 311 AM MDT Tue Aug 31 2021 COZ060-061-065>068-311715- /O.NEW.KPUB.FF.A.0022.210901T1600Z-210902T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Eastern Sawatch Mountains Above 11000 Feet-Western Chaffee County Between 9000 and 11000 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- Including the cities of Cumbres Pass, St Elmo, South Fork, Wolf Creek Pass, Creede, Bonanza, Granite, North Pass, and Alpine 311 AM MDT Tue Aug 31 2021 ...FLASH FLOOD WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH WEDNESDAY EVENING... The National Weather Service in Pueblo has issued a * Flash Flood Watch for portions of central Colorado and south central 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 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 and Eastern San Juan Mountains Below 10000 Feet. * From Wednesday morning through Wednesday evening. * Monsoon moisture and a weather disturbance will move across the area on Wednesday. Widespread showers and embedded thunderstorms capable of producing localized flash flooding will be possible. The most susceptible areas will be the Chalk Cliffs as well as locations in and near the steeper terrain of the Eastern San Juan and La Garita mountains. * Debris flows will be possible in and near the Chalk Cliffs as well as enhanced rises in creeks and streams where sustained moderate to heavy rainfall occurs. Rock slides will also be possible in the steeper terrain. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ KT
7 follow-up statements
580 WGUS65 KPUB 311638 FFAPUB Flood Watch National Weather Service Pueblo CO 1038 AM MDT Tue Aug 31 2021 COZ060-061-065>068-010045- /O.CON.KPUB.FF.A.0022.210901T1600Z-210902T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Eastern Sawatch Mountains Above 11000 Feet-Western Chaffee County Between 9000 and 11000 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- Including the cities of Cumbres Pass, St Elmo, South Fork, Wolf Creek Pass, Creede, Bonanza, Granite, North Pass, and Alpine 1038 AM MDT Tue Aug 31 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING THROUGH WEDNESDAY EVENING... The Flash Flood Watch continues for * Portions of central Colorado and south central 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 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. * From Wednesday morning through Wednesday evening. * Monsoon moisture and a weather disturbance will move across the area on Wednesday. Widespread showers and embedded thunderstorms capable of producing localized flash flooding will be possible. The most susceptible areas will be the Chalk Cliffs as well as locations in and near the steeper terrain of the Eastern San Juan and La Garita mountains. * Debris flows will be possible in and near the Chalk Cliffs as well as enhanced rises in creeks and streams where sustained moderate to heavy rainfall occurs. Rock slides will also be possible in the steeper terrain. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ KAM
443 WGUS65 KPUB 312048 FFAPUB Flood Watch National Weather Service Pueblo CO 248 PM MDT Tue Aug 31 2021 COZ060-061-065>068-010500- /O.CON.KPUB.FF.A.0022.210901T1600Z-210902T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Eastern Sawatch Mountains Above 11000 Feet-Western Chaffee County Between 9000 and 11000 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- Including the cities of Cumbres Pass, St Elmo, South Fork, Wolf Creek Pass, Creede, Bonanza, Granite, North Pass, and Alpine 248 PM MDT Tue Aug 31 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING THROUGH WEDNESDAY EVENING... The Flash Flood Watch continues for * Portions of central Colorado and south central 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 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. * From Wednesday morning through Wednesday evening. * Monsoon moisture and a weather disturbance will move across the area on Wednesday. Widespread showers and embedded thunderstorms capable of producing localized flash flooding will be possible. The most susceptible areas will be the Chalk Cliffs as well as locations in and near the steeper terrain of the Eastern San Juan and La Garita mountains. * Debris flows will be possible in and near the Chalk Cliffs as well as enhanced rises in creeks and streams where sustained moderate to heavy rainfall occurs. Rock slides will also be possible in the steeper terrain. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ KAM
078 WGUS65 KPUB 010259 FFAPUB Flood Watch National Weather Service Pueblo CO 859 PM MDT Tue Aug 31 2021 COZ060-061-065>068-011100- /O.CON.KPUB.FF.A.0022.210901T1600Z-210902T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Eastern Sawatch Mountains Above 11000 Feet-Western Chaffee County Between 9000 and 11000 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- Including the cities of Cumbres Pass, St Elmo, South Fork, Wolf Creek Pass, Creede, Bonanza, Granite, North Pass, and Alpine 859 PM MDT Tue Aug 31 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING THROUGH WEDNESDAY EVENING... The Flash Flood Watch continues for * Flash Flood Watch for portions of central Colorado and south central 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 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 and Eastern San Juan Mountains Below 10000 Feet. * From Wednesday morning through Wednesday evening. * Monsoon moisture and a weather disturbance will move across the area on Wednesday. Widespread showers and embedded thunderstorms capable of producing localized flash flooding will be possible. The most susceptible areas will be the Chalk Cliffs as well as locations in and near the steeper terrain of the Eastern San Juan and La Garita mountains. * Debris flows will be possible in and near the Chalk Cliffs as well as enhanced rises in creeks and streams where sustained moderate to heavy rainfall occurs. Rock slides will also be possible in the steeper terrain. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Hodanish
845 WGUS65 KPUB 010856 FFAPUB URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Pueblo CO 256 AM MDT Wed Sep 1 2021 COZ062-072>075-011700- /O.EXA.KPUB.FF.A.0022.210901T1600Z-210902T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Central Chaffee County Below 9000 Feet-Northern Sangre de Cristo Mountains Between 8500 And 11000 Feet-Northern Sangre de Cristo Mountains Above 11000 Feet-Southern Sangre de Cristo Mountains Between 7500 and 11000 Feet-Southern Sangre de Cristo Mountains Above 11000 Feet- Including the cities of Weston, Buena Vista, Salida, Cuchara, Stonewall, La Veta Pass, Poncha Pass, Blanca Peak, and Spanish Peaks 256 AM MDT Wed Sep 1 2021 ...FLASH FLOOD WATCH IN EFFECT FROM 10 AM MDT THIS MORNING THROUGH THIS EVENING... The National Weather Service in Pueblo has expanded the * Flash Flood Watch to include central Chaffee County and the Sangre De Cristo mountains. * From 10 AM MDT this morning through this evening. * Monsoon moisture and a weather disturbance will move across the area through this evening. Widespread showers and embedded thunderstorms capable of producing localized flash flooding will be possible. The most susceptible areas will be the Chalk Cliffs as well the burn scars, particularly Decker and Spring. * Mud and debris flows will be possible in and near the Chalk Cliffs and the burn scars. Rapid rises in creeks and streams will be possible where sustained moderate to heavy rainfall occurs. Rock slides will also be possible in the steeper terrain such as Poncha Pass. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ COZ060-061-065>068-011700- /O.CON.KPUB.FF.A.0022.210901T1600Z-210902T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Eastern Sawatch Mountains Above 11000 Feet-Western Chaffee County Between 9000 and 11000 Feet-Saguache County East of Continental Divide Below 10000 Feet-La Garita Mountains Above 10000 Feet-Upper Rio Grande Valley/Eastern San Juan Mountains Below 10000 Feet- Eastern San Juan Mountains Above 10000 Feet- Including the cities of Cumbres Pass, St Elmo, South Fork, Wolf Creek Pass, Creede, Bonanza, Granite, North Pass, and Alpine 256 AM MDT Wed Sep 1 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 10 AM MDT THIS MORNING THROUGH THIS EVENING... The Flash Flood Watch continues for * Portions of central Colorado and south central Colorado, including the eastern Sawatch Range, the eastern San Juan and La Garita mountains and the upper Rio Grande Valley. * From 10 AM MDT this morning through this evening. * Monsoon moisture and a weather disturbance will move across the area on Wednesday. Widespread showers and embedded thunderstorms capable of producing localized flash flooding will be possible. The most susceptible areas will be the Chalk Cliffs as well as locations in and near the steeper terrain of the Eastern San Juan and La Garita mountains. * Debris flows will be possible in and near the Chalk Cliffs as well as enhanced rises in creeks and streams where sustained moderate to heavy rainfall occurs. Rock slides will also be possible in the steeper terrain. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ KT
762 WGUS65 KPUB 012026 FFAPUB Flood Watch National Weather Service Pueblo CO 226 PM MDT Wed Sep 1 2021 COZ060>062-065>068-072>075-020430- /O.CON.KPUB.FF.A.0022.000000T0000Z-210902T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Eastern Sawatch Mountains Above 11000 Feet-Western Chaffee County Between 9000 and 11000 Feet-Central Chaffee County Below 9000 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- Southern Sangre de Cristo Mountains Between 7500 and 11000 Feet- Southern Sangre de Cristo Mountains Above 11000 Feet- Including the cities of Cumbres Pass, Weston, Buena Vista, Cuchara, Salida, South Fork, Wolf Creek Pass, Creede, La Veta Pass, Poncha Pass, St Elmo, Bonanza, Stonewall, Granite, Blanca Peak, Spanish Peaks, North Pass, and Alpine 226 PM MDT Wed Sep 1 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... The Flash Flood Watch continues for * Portions of central Colorado and south central Colorado, including the eastern Sawatch Range, the eastern San Juan and La Garita mountains and the upper Rio Grande Valley. * Until Midnight MDT tonight. * Monsoon moisture and a weather disturbance will move across the area on Wednesday. Widespread showers and embedded thunderstorms capable of producing localized flash flooding will be possible. The most susceptible areas will be the Chalk Cliffs as well as locations in and near the steeper terrain of the Eastern San Juan and La Garita mountains. * Debris flows will be possible in and near the Chalk Cliffs as well as enhanced rises in creeks and streams where sustained moderate to heavy rainfall occurs. Rock slides will also be possible in the steeper terrain. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ KS
458 WGUS65 KPUB 012109 FFAPUB Flood Watch National Weather Service Pueblo CO 309 PM MDT Wed Sep 1 2021 COZ060>062-065>068-072>075-020515- /O.CON.KPUB.FF.A.0022.000000T0000Z-210902T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Eastern Sawatch Mountains Above 11000 Feet-Western Chaffee County Between 9000 and 11000 Feet-Central Chaffee County Below 9000 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- Southern Sangre de Cristo Mountains Between 7500 and 11000 Feet- Southern Sangre de Cristo Mountains Above 11000 Feet- Including the cities of Cumbres Pass, Weston, Buena Vista, Cuchara, Salida, South Fork, Wolf Creek Pass, Creede, La Veta Pass, Poncha Pass, St Elmo, Bonanza, Stonewall, Granite, Blanca Peak, Spanish Peaks, North Pass, and Alpine 309 PM MDT Wed Sep 1 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... The Flash Flood Watch continues for * Portions of central Colorado and south central Colorado, including the eastern Sawatch Range, the eastern San Juan and La Garita mountains and the upper Rio Grande Valley. * Until Midnight MDT tonight. * Monsoon moisture and a weather disturbance will move across the area on Wednesday. Widespread showers and embedded thunderstorms capable of producing localized flash flooding will be possible. The most susceptible areas will be the Chalk Cliffs as well as locations in and near the steeper terrain of the Eastern San Juan and La Garita mountains. * Debris flows will be possible in and near the Chalk Cliffs as well as enhanced rises in creeks and streams where sustained moderate to heavy rainfall occurs. Rock slides will also be possible in the steeper terrain. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ KS
926 WGUS65 KPUB 020328 FFAPUB Flood Watch National Weather Service Pueblo CO 928 PM MDT Wed Sep 1 2021 COZ060>062-065>068-072>075-020430- /O.CAN.KPUB.FF.A.0022.000000T0000Z-210902T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Eastern Sawatch Mountains Above 11000 Feet-Western Chaffee County Between 9000 and 11000 Feet-Central Chaffee County Below 9000 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- Southern Sangre de Cristo Mountains Between 7500 and 11000 Feet- Southern Sangre de Cristo Mountains Above 11000 Feet- Including the cities of Cumbres Pass, Weston, Buena Vista, Cuchara, Salida, South Fork, Wolf Creek Pass, Creede, La Veta Pass, Poncha Pass, St Elmo, Bonanza, Stonewall, Granite, Blanca Peak, Spanish Peaks, North Pass, and Alpine 928 PM MDT Wed Sep 1 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for portions of central Colorado, south central Colorado and southeast Colorado has been cancelled. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$ EP
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.