Alert archive / Colorado / Flash Flood Warnings in 2021
Flash Flood Warning 60, NWS Pueblo, CO
NWS Pueblo, CO issued this flash flood warning at Jul 21, 2021, 4:08 PM MDT for Custer County, Colorado. It was in force for 3 hr. 4 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 21, 2021, 4:08 PM MDT (22:08 UTC)
- Expired
- Jul 21, 2021, 7:15 PM MDT
- In force
- 3 hr
- Issued by
- NWS Pueblo, CO
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Custer County, CO
The radar
The Pueblo radar (KPUX), 116 km from the middle of the area, began a volume at 22:10 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 was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 21, 4:30 PM MDT | FLASH FLOOD | Westcliffe, CO | HERMIT ROAD CUTOFF FROM HIGHWAY 69 TO 96 CLOSED DUE TO FLOODING IN SEVERAL LOCATIONS. |
| Jul 21, 5:10 PM MDT | HEAVY RAIN 0.87 | Westcliffe, CO | |
| Jul 21, 5:27 PM MDT | FLASH FLOOD | Westcliffe, CO | FLOODING OF INTERSECTION NEAR 3RD AND EDWARDS AVE. |
| Jul 21, 6:20 PM MDT | HEAVY RAIN 1.92 | 1 Nne Westcliffe, CO |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 10.1 hours before the alert went out and 272 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2182 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
234
WGUS55 KPUB 212208
FFWPUB
COC027-220115-
/O.NEW.KPUB.FF.W.0060.210721T2208Z-210722T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
408 PM MDT Wed Jul 21 2021
The National Weather Service in Pueblo has issued a
* Flash Flood Warning for...
Central Custer County in southeastern Colorado...
* Until 715 PM MDT.
* At 408 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 1.25 to 1.75
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...
Silver Cliff, Westcliffe and Rosita.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3819 10553 3816 10534 3812 10532 3805 10532
3803 10548 3812 10557
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...1.25-1.75 INCHES IN 1 HOUR
$$
KS4 follow-up statements
972
WGUS75 KPUB 212212
FFSPUB
Flash Flood Statement
National Weather Service Pueblo CO
412 PM MDT Wed Jul 21 2021
COC027-220115-
/O.CON.KPUB.FF.W.0060.000000T0000Z-210722T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Custer CO-
412 PM MDT Wed Jul 21 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM MDT THIS
EVENING FOR CENTRAL CUSTER COUNTY...
At 412 PM MDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 1 and 1.5 inches of rain have
fallen. The expected rainfall rate is 0.25 to 0.75 inches in 1 hour.
Flash flooding is ongoing or expected to begin shortly. Reports from
Emergency Managers are that the ditches are full. There is some
erosion on the road shoulders on CR40.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
Silver Cliff, Westcliffe and Rosita.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3819 10553 3816 10534 3812 10532 3805 10532
3803 10548 3812 10557
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...0.25-0.75 INCHES IN 1 HOUR
$$
KS639
WGUS75 KPUB 212214
FFSPUB
Flash Flood Statement
National Weather Service Pueblo CO
414 PM MDT Wed Jul 21 2021
COC027-220115-
/O.CON.KPUB.FF.W.0060.000000T0000Z-210722T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Custer CO-
414 PM MDT Wed Jul 21 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM MDT THIS
EVENING FOR CENTRAL CUSTER COUNTY...
At 414 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 1 to 1.5 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...
Silver Cliff, Westcliffe and Rosita.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3819 10553 3816 10534 3812 10532 3805 10532
3803 10548 3812 10557
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...1-1.5 INCHES IN 1 HOUR
$$
KS113
WGUS75 KPUB 212217
FFSPUB
Flash Flood Statement
National Weather Service Pueblo CO
417 PM MDT Wed Jul 21 2021
COC027-220115-
/O.CON.KPUB.FF.W.0060.000000T0000Z-210722T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Custer CO-
417 PM MDT Wed Jul 21 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM MDT THIS
EVENING FOR CENTRAL CUSTER COUNTY...
At 417 PM MDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 1 and 1.5 inches of rain have
fallen. The expected rainfall rate is 1 to 1.5 inches in 1 hour.
Flash flooding is ongoing or expected to begin shortly. Street
flooding has been reported in the town of Westcliffe.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
Silver Cliff, Westcliffe and Rosita.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3819 10553 3816 10534 3812 10532 3805 10532
3803 10548 3812 10557
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...1-1.5 INCHES IN 1 HOUR
$$
KS653
WGUS75 KPUB 220121
FFSPUB
Flash Flood Statement
National Weather Service Pueblo CO
721 PM MDT Wed Jul 21 2021
COC027-220131-
/O.EXP.KPUB.FF.W.0060.000000T0000Z-210722T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Custer CO-
721 PM MDT Wed Jul 21 2021
...FLASH FLOOD WARNING HAS EXPIRED FOR CENTRAL CUSTER COUNTY...
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 1200 AM MDT for portions
of central Colorado, south central Colorado and southeast Colorado.
LAT...LON 3819 10553 3816 10534 3812 10532 3805 10532
3803 10548 3812 10557
$$
KTThe 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, 2:57 AM MDT | Flash Flood Watch | PUB | Alamosa, Chaffee, Conejos, Costilla, Custer, Fremont and 5 more | 19 hr |
| 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, 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 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.