Alert archive / Colorado / Flash Flood Warnings in 2021
Flash Flood Warning 83, NWS Pueblo, CO
NWS Pueblo, CO issued this flash flood warning at Jul 25, 2021, 12:31 PM MDT for Costilla County, Huerfano County, Colorado. It was in force for 3 hr. 2 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 25, 2021, 12:31 PM MDT (18:31 UTC)
- Expired
- Jul 25, 2021, 3:30 PM MDT
- In force
- 3 hr
- Issued by
- NWS Pueblo, CO
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
Counties Costilla County, CO, Huerfano County, CO
The radar
The Pueblo radar (KPUX), 138 km from the middle of the area, began a volume at 18:31 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 25, 1:19 PM MDT | FLASH FLOOD | 5 Sw La Veta, CO | FLOODING AT INDIAN CREEK AND ROAD 431. OVERTOP OF 8 INCHES OF WATER, NO DAMAGE. TIME ESTIMATED FROM GAUGE REPORT. |
| Jul 25, 2:45 PM MDT | FLASH FLOOD | 5 Sw La Veta, CO | CORRECTS PREVIOUS FLASH FLOOD REPORT FROM 5 SW LA VETA. FLOODING AT INDIAN CREEK AND ROAD 431. OVERTOP OF 8 INCHES OF WATER, NO DAMAGE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Albuquerq/Krtlnd, NM (KABQ), launched 12:00Z, 6.5 hours before the alert went out and 299 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
- 220 J/kg
- Mixed-layer CIN
- -65 J/kg
- Mixed-layer LCL
- 1377 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
088
WGUS55 KPUB 251831
FFWPUB
COC023-055-252130-
/O.NEW.KPUB.FF.W.0083.210725T1831Z-210725T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
1231 PM MDT Sun Jul 25 2021
The National Weather Service in Pueblo has issued a
* Flash Flood Warning for...
Southern Portions of the Spring Burn Scar in...
East Central Costilla County in south central Colorado...
South Central Huerfano County in southeastern Colorado...
* Until 330 PM MDT.
* At 1231 PM MDT, Doppler radar indicated thunderstorms producing
heavy rain over the Spring Burn Scar. The expected rainfall rate
is 0.5 to 1 inch in 1 hour. Flash flooding is ongoing or expected
to begin shortly.
Excessive rainfall over the warning area may cause mud slides near
steep terrain. The mud slide can consist of rock, mud, vegetation
and other loose materials.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding in and around the Spring Burn
Scar.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of areas in and around
the Spring Burn Scar.
* Some locations that may experience flash flooding include...
Indian Creek on the southeastern Spring Burn Scar, southern Spring
Burn Scar south of Highway 160 in Huerfano county and southeastern
Spring Burn Scar south of Highway 160 in Costilla county.
This includes the following high risk locations...
Sulphur Springs on Indian Creek and County Road 421 near Indian
Creek.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This is a life threatening situation. Heavy rainfall will cause
extensive and severe flash flooding of creeks...streams...and
ditches in the Spring Burn Scar. Severe debris flows can also be
anticipated across roads. Roads and driveways may be washed away in
places. If you encounter flood waters...climb to safety.
Move away from recently burned areas. Life-threatening flooding of
creeks, roads and normally dry arroyos is likely. The heavy rains
will likely trigger rockslides, mudslides and debris flows in steep
terrain, especially in and around these areas.
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3748 10516 3748 10515 3749 10510 3749 10508
3746 10503 3744 10504 3740 10507 3739 10510
3741 10515 3745 10516
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...0.5-1 INCH IN 1 HOUR
$$
Cohen1 follow-up statement
202
WGUS75 KPUB 251922
FFSPUB
Flash Flood Statement
National Weather Service Pueblo CO
122 PM MDT Sun Jul 25 2021
COC023-055-252130-
/O.CON.KPUB.FF.W.0083.000000T0000Z-210725T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Costilla CO-Huerfano CO-
122 PM MDT Sun Jul 25 2021
...FLASH FLOOD WARNING FOR SOUTHERN PORTIONS OF THE SPRING BURN SCAR
REMAINS IN EFFECT UNTIL 330 PM MDT THIS AFTERNOON INCLUDING PORTIONS
OF EAST CENTRAL COSTILLA AND SOUTH CENTRAL HUERFANO COUNTIES...
At 122 PM MDT, Doppler radar indicated that the thunderstorms
producing heavy rain earlier over the Spring Burn Scar resulted in
around 0.5 to 1.5 inches of rainfall accumulation. While rainfall
rates have decreased, additional showers could produce rainfall
amounts of 0.1 to 0.2 inch in the warned area. Flash flooding is
ongoing or may begin shortly.
Excessive rainfall over the warning area may cause mud slides near
steep terrain. The mud slide can consist of rock, mud, vegetation
and other loose materials.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding in and around the Spring Burn Scar.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of areas in and around
the Spring Burn Scar.
Some locations that will experience flash flooding include...
Indian Creek on the southeastern Spring Burn Scar, southern Spring
Burn Scar south of Highway 160 in Huerfano county and southeastern
Spring Burn Scar south of Highway 160 in Costilla county.
This includes the following high risk locations...
Sulphur Springs on Indian Creek and County Road 421 near Indian
Creek.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This is a life threatening situation. Heavy rainfall may cause
extensive and severe flash flooding of creeks...streams...and
ditches in the Spring Burn Scar. Severe debris flows can also be
anticipated across roads. Roads and driveways may be washed away in
places. If you encounter flood waters...climb to safety.
Move away from recently burned areas. Life-threatening flooding of
creeks, roads and normally dry arroyos may occur. The heavy rains
may trigger rockslides, mudslides and debris flows in steep terrain,
especially in and around these areas.
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3748 10516 3748 10515 3749 10510 3749 10508
3746 10503 3744 10504 3740 10507 3739 10510
3741 10515 3745 10516
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
CohenThe office that day
Everything else NWS Pueblo, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 6:39 PM MDT | Special Weather Statement | PUB | Alamosa | 51 min |
| Jul 24, 8:49 PM MDT | Flash Flood Warning | PUB | Custer, Saguache | 92 min |
| Jul 25, 12:24 PM MDT | Special Weather Statement | PUB | Huerfano | 21 min |
| Jul 25, 1:09 PM MDT | Flash Flood Warning | PUB | Huerfano | 3 hr |
| Jul 25, 2:29 PM MDT | Special Weather Statement | PUB | Kiowa | 46 min |
| Jul 25, 2:58 PM MDT | Severe Thunderstorm Warning | PUB | Kiowa | 62 min |
| Jul 25, 3:21 PM MDT | Special Weather Statement | PUB | Kiowa | 39 min |
| Jul 25, 3:37 PM MDT | Severe Thunderstorm Warning | PUB | Kiowa | 68 min |
| Jul 25, 4:38 PM MDT | Special Weather Statement | PUB | El Paso | 52 min |
| Jul 25, 4:45 PM MDT | Special Weather Statement | PUB | Chaffee | 60 min |
| Jul 25, 4:48 PM MDT | Special Weather Statement | PUB | Bent, Kiowa | 57 min |
| Jul 25, 4:49 PM MDT | Special Weather Statement | PUB | Fremont | 56 min |
| Jul 25, 4:51 PM MDT | Special Weather Statement | PUB | Teller | 39 min |
| Jul 25, 4:53 PM MDT | Special Weather Statement | PUB | Douglas | 37 min |
| Jul 25, 5:05 PM MDT | Special Weather Statement | PUB | Crowley, Otero, Pueblo | 40 min |
| Jul 25, 5:07 PM MDT | Special Weather Statement | PUB | El Paso | 53 min |
| Jul 25, 5:09 PM MDT | Special Weather Statement | PUB | Fremont | 51 min |
| Jul 25, 5:15 PM MDT | Special Weather Statement | PUB | Baca | 30 min |
| Jul 25, 5:48 PM MDT | Severe Thunderstorm Warning | PUB | Prowers | 55 min |
| Jul 25, 5:55 PM MDT | Flash Flood Warning | PUB | Fremont, Saguache | 3 hr |
| Jul 25, 5:58 PM MDT | Special Weather Statement | PUB | Bent, Otero, Pueblo | 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.