Alert archive / Colorado / Flash Flood Warnings in 2021
Flash Flood Warning 69, NWS Pueblo, CO
NWS Pueblo, CO issued this flash flood warning at Jul 23, 2021, 4:53 PM MDT for Chaffee County, Colorado. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 23, 2021, 4:53 PM MDT (22:53 UTC)
- Expired
- Jul 23, 2021, 10:00 PM MDT
- In force
- 5 hr
- Issued by
- NWS Pueblo, CO
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Chaffee County, CO
The radar
The Grand Junction radar (KGJX), 178 km from the middle of the area, began a volume at 22:57 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 12:00Z, 10.9 hours before the alert went out and 203 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
- 21 J/kg
- Mixed-layer CIN
- -153 J/kg
- Mixed-layer LCL
- 1904 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -41 m²/s²
- 0-3 km storm-relative helicity
- -27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
532
WGUS55 KPUB 232253
FFWPUB
COC015-240200-
/O.NEW.KPUB.FF.W.0069.210723T2253Z-210724T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
453 PM MDT Fri Jul 23 2021
The National Weather Service in Pueblo has issued a
* Flash Flood Warning for...
Central Chaffee County in central Colorado...
* Until 800 PM MDT.
* At 453 PM MDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to 1 inch of rain has
fallen. The expected rainfall rate is 1.5 to 2 inches in 1 hour.
Flash flooding is ongoing or expected to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Alpine.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3875 10614 3870 10613 3863 10630 3876 10633
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...1.5-2 INCHES IN 1 HOUR
$$
KS4 follow-up statements
616
WGUS75 KPUB 232351
FFSPUB
Flash Flood Statement
National Weather Service Pueblo CO
551 PM MDT Fri Jul 23 2021
COC015-240200-
/O.CON.KPUB.FF.W.0069.000000T0000Z-210724T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Chaffee CO-
551 PM MDT Fri Jul 23 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR CENTRAL CHAFFEE COUNTY...
At 551 PM MDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Up to 1 inch of rain has fallen. The
expected rainfall rate is 0.25 inches in 1 hour. Flash flooding is
ongoing or expected to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
Alpine.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3875 10614 3870 10613 3863 10630 3876 10633
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...0.25 INCHES IN 1 HOUR
$$
KS153
WGUS55 KPUB 240119
FFWPUB
COC015-240400-
/O.EXT.KPUB.FF.W.0069.000000T0000Z-210724T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
719 PM MDT Fri Jul 23 2021
The National Weather Service in Pueblo has extended the
* Flash Flood Warning for...
Central Chaffee County in central Colorado...
* Until 1000 PM MDT.
* At 719 PM MDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 1.5 inches of
rain have fallen. The expected rainfall rate is 0.5 to 1.25 inches
in 1 hour. Flash flooding is ongoing or expected to begin shortly.
This Flash Flood Warning extension is for Chalk Creek and the
Chalk Cliffs.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Alpine.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3875 10614 3870 10613 3863 10630 3876 10633
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...0.5-1.25 INCHES IN 1 HOUR
$$
KS757
WGUS75 KPUB 240236
FFSPUB
Flash Flood Statement
National Weather Service Pueblo CO
836 PM MDT Fri Jul 23 2021
COC015-240400-
/O.CON.KPUB.FF.W.0069.000000T0000Z-210724T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Chaffee CO-
836 PM MDT Fri Jul 23 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 10 PM MDT THIS
EVENING FOR CENTRAL CHAFFEE COUNTY...
At 836 PM MDT, Doppler radar indicated thunderstorms producing heavy
rain in Chalk Creek and Chalk Cliffs. Between 1 and 1.5 inches of
rain have fallen. The expected rainfall rate is 0.5 to 0.75 inches
in 1 hour. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
Chalk Creek and Chalk Cliffs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3875 10614 3870 10613 3863 10630 3876 10633
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...0.5-0.75 INCHES IN 1 HOUR
$$
KS244 WGUS75 KPUB 240354 FFSPUB Flash Flood Statement National Weather Service Pueblo CO 954 PM MDT Fri Jul 23 2021 COC015-240404- /O.EXP.KPUB.FF.W.0069.000000T0000Z-210724T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Chaffee CO- 954 PM MDT Fri Jul 23 2021 ...FLASH FLOOD WARNING WILL EXPIRE AT 10 PM MDT THIS EVENING FOR CENTRAL CHAFFEE COUNTY... The heavy rain has ended. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. There are moderate rainfall rates in the vicinity of Chalk Creek and the Chalk Cliffs, but it is not expected to cause any additional flash flooding at this moment. A Flash Flood Watch remains in effect until 1200 AM MDT for portions of central Colorado, south central Colorado and southeast Colorado. LAT...LON 3875 10614 3870 10613 3863 10630 3876 10633 $$ KS
The office that day
Everything else NWS Pueblo, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 3:06 AM MDT | Flash Flood Watch | PUB | Alamosa, Chaffee, Conejos, Costilla, Custer, Fremont and 5 more | 19 hr |
| Jul 23, 2:47 PM MDT | Special Weather Statement | PUB | Chaffee | 43 min |
| Jul 23, 3:24 PM MDT | Flash Flood Warning | PUB | Saguache | 3 hr |
| Jul 23, 3:34 PM MDT | Flash Flood Warning | PUB | Chaffee, Fremont, Saguache | 3 hr |
| Jul 23, 3:42 PM MDT | Special Weather Statement | PUB | Lake | 48 min |
| Jul 23, 5:19 PM MDT | Flash Flood Warning | PUB | Saguache | 3 hr |
| Jul 23, 5:27 PM MDT | Special Weather Statement | PUB | Saguache | 48 min |
Nearby
Flash Flood Warnings in Colorado, 2021Every flash flood warning 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.