Alert archive / Colorado / Flash Flood Warnings in 2021
Flash Flood Warning 99, NWS Pueblo, CO
NWS Pueblo, CO issued this flash flood warning at Jul 31, 2021, 5:03 PM MDT for Custer County, Huerfano County, Pueblo County, Colorado. It was in force for 3 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 31, 2021, 5:03 PM MDT (23:03 UTC)
- Expired
- Jul 31, 2021, 8:15 PM MDT
- In force
- 3 hr
- Issued by
- NWS Pueblo, CO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Custer County, CO, Huerfano County, CO, Pueblo County, CO
The radar
The Pueblo radar (KPUX), 90 km from the middle of the area, began a volume at 23:05 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
Denver, CO (KDNR), launched 12:00Z, 11.1 hours before the alert went out and 261 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
- 44 J/kg
- Mixed-layer CIN
- -277 J/kg
- Mixed-layer LCL
- 1127 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -71 m²/s²
- 0-3 km storm-relative helicity
- -21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
315
WGUS55 KPUB 312303
FFWPUB
COC027-055-101-010215-
/O.NEW.KPUB.FF.W.0099.210731T2303Z-210801T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
503 PM MDT Sat Jul 31 2021
The National Weather Service in Pueblo has issued a
* Flash Flood Warning for...
East Central Custer County in southeastern Colorado...
North Central Huerfano County in southeastern Colorado...
West Central Pueblo County in southeastern Colorado...
* Until 815 PM MDT.
* At 503 PM MDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1.5 and 2.5 inches of
rain have fallen. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Greenhorn Mountain, Rye, San Isabel, Beulah and Colorado City.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3795 10510 3797 10510 3809 10513 3809 10510
3810 10505 3811 10500 3810 10499 3810 10494
3803 10490 3797 10489 3781 10487 3777 10497
3779 10503 3784 10506
FLASH FLOOD...RADAR INDICATED
$$
KS2 follow-up statements
591
WGUS75 KPUB 010031
FFSPUB
Flash Flood Statement
National Weather Service Pueblo CO
631 PM MDT Sat Jul 31 2021
COC027-055-101-010215-
/O.CON.KPUB.FF.W.0099.000000T0000Z-210801T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Custer CO-Huerfano CO-Pueblo CO-
631 PM MDT Sat Jul 31 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM MDT THIS
EVENING FOR EAST CENTRAL CUSTER, NORTH CENTRAL HUERFANO AND WEST
CENTRAL PUEBLO COUNTIES...
At 631 PM MDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 2.5 and 5 inches of rain have
fallen. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
Greenhorn Mountain, Rye, San Isabel, Beulah and Colorado City.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3795 10510 3797 10510 3809 10513 3809 10510
3810 10505 3811 10500 3810 10499 3810 10494
3803 10490 3797 10489 3781 10487 3777 10497
3779 10503 3784 10506
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
KS663
WGUS75 KPUB 010212
FFSPUB
Flash Flood Statement
National Weather Service Pueblo CO
812 PM MDT Sat Jul 31 2021
COC027-055-101-010222-
/O.EXP.KPUB.FF.W.0099.000000T0000Z-210801T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Custer CO-Huerfano CO-Pueblo CO-
812 PM MDT Sat Jul 31 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 815 PM MDT THIS EVENING FOR
EAST CENTRAL CUSTER, NORTH CENTRAL HUERFANO AND WEST CENTRAL PUEBLO
COUNTIES...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
A Flash Flood Watch remains in effect until 100 AM MDT for portions
of central Colorado, east central Colorado, south central Colorado
and southeast Colorado.
LAT...LON 3795 10510 3797 10510 3809 10513 3809 10510
3810 10505 3811 10500 3810 10499 3810 10494
3803 10490 3797 10489 3781 10487 3777 10497
3779 10503 3784 10506
$$
KSThe office that day
Everything else NWS Pueblo, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 6:13 PM MDT | Special Weather Statement | PUB | Douglas | 17 min |
| Jul 31, 12:57 PM MDT | Special Weather Statement | PUB | Costilla | 63 min |
| Jul 31, 1:12 PM MDT | Special Weather Statement | PUB | Custer | 33 min |
| Jul 31, 1:39 PM MDT | Flash Flood Warning | PUB | Fremont | 3 hr |
| Jul 31, 1:56 PM MDT | Special Weather Statement | PUB | Custer | 49 min |
| Jul 31, 1:59 PM MDT | Special Weather Statement | PUB | Chaffee | 46 min |
| Jul 31, 2:01 PM MDT | Special Weather Statement | PUB | Chaffee | 44 min |
| Jul 31, 2:12 PM MDT | River Flood Watch | PUB | Pueblo | 18 hr |
| Jul 31, 2:12 PM MDT | River Flood Watch | PUB | Pueblo | 15 hr |
| Jul 31, 2:12 PM MDT | River Flood Watch | PUB | Pueblo | 13 hr |
| Jul 31, 2:13 PM MDT | Special Weather Statement | PUB | Conejos | 32 min |
| Jul 31, 2:36 PM MDT | Flash Flood Warning | PUB | Chaffee | 3 hr |
| Jul 31, 2:38 PM MDT | Flash Flood Warning | PUB | Custer | 118 min |
| Jul 31, 2:48 PM MDT | Flash Flood Warning | PUB | Chaffee | 3 hr |
| Jul 31, 3:11 PM MDT | Special Weather Statement | PUB | Conejos | 34 min |
| Jul 31, 3:22 PM MDT | Special Weather Statement | PUB | Saguache | 38 min |
| Jul 31, 3:25 PM MDT | Special Weather Statement | PUB | Alamosa | 35 min |
| Jul 31, 3:30 PM MDT | Special Weather Statement | PUB | Rio Grande | 45 min |
| Jul 31, 3:39 PM MDT | Special Weather Statement | PUB | Las Animas | 36 min |
| Jul 31, 3:43 PM MDT | Special Weather Statement | PUB | Baca | 32 min |
| Jul 31, 3:56 PM MDT | Special Weather Statement | PUB | Huerfano | 49 min |
| Jul 31, 4:05 PM MDT | Special Weather Statement | PUB | El Paso | 25 min |
| Jul 31, 4:31 PM MDT | Flash Flood Warning | PUB | El Paso | 3 hr |
| Jul 31, 4:46 PM MDT | Flash Flood Warning | PUB | Huerfano | 4 hr |
| Jul 31, 4:50 PM MDT | Flash Flood Warning | PUB | Custer, Pueblo | 3 hr |
| Jul 31, 4:59 PM MDT | Special Weather Statement | PUB | Baca | 31 min |
| Jul 31, 5:13 PM MDT | Flash Flood Warning | PUB | Costilla, Huerfano | 4 hr |
| Jul 31, 5:28 PM MDT | Special Weather Statement | PUB | Baca | 32 min |
| Jul 31, 5:29 PM MDT | Special Weather Statement | PUB | Baca | 46 min |
| Jul 31, 5:35 PM MDT | Flash Flood Warning | PUB | El Paso | 3 hr |
| Jul 31, 5:43 PM MDT | Flash Flood Warning | PUB | Costilla, Huerfano | 3 hr |
| Jul 31, 5:45 PM MDT | Special Weather Statement | PUB | Baca | 30 min |
| Jul 31, 5:55 PM MDT | Severe Thunderstorm Warning | PUB | Baca | 35 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.