Alert archive / Colorado / Flash Flood Warnings in 2020
Flash Flood Warning 34, NWS Pueblo, CO
NWS Pueblo, CO issued this flash flood warning at Jul 21, 2020, 1:53 PM MDT for Costilla County, Huerfano County, Colorado. It was in force for 119 min. 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 21, 2020, 1:53 PM MDT (19:53 UTC)
- Expired
- Jul 21, 2020, 3:52 PM MDT
- In force
- 119 min
- 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), 133 km from the middle of the area, began a volume at 19:53 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
Albuquerq/Krtlnd, NM (KABQ), launched 12:00Z, 7.9 hours before the alert went out and 306 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
- 10 J/kg
- Mixed-layer CIN
- -323 J/kg
- Mixed-layer LCL
- 2109 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
393
WGUS55 KPUB 211953
FFWPUB
COC023-055-212245-
/O.NEW.KPUB.FF.W.0034.200721T1953Z-200721T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
153 PM MDT Tue Jul 21 2020
The National Weather Service in Pueblo has issued a
* Flash Flood Warning for...
Central Huerfano County in southeastern Colorado...
Northeastern Costilla County in south central Colorado...
* Until 445 PM MDT.
* At 150 PM MDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Around one half inch of rain has
already fallen. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Life threatening flash flooding. Heavy rain producing
flash flooding.
SOURCE...Radar indicated.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flooding include...
Spring Burn Scar south of Highway 160 in Costilla county,
northwestern Spring Burn Scar south of Highway 160 in Huerfano
county and southern Spring Burn Scar north of Highway 160.
Excessive rainfall will result in debris flow moving through the
drainages in the western portion of the Spring Burn Scar in Costilla
County. The debris flow can consist of rock, mud, vegetation and
other loose materials.
This includes the following areas, South Abeyta Creek near County
Road 443, South Abeyta Creek near County Road 442, and South Abeyta
Creek near County Road 441.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
LAT...LON 3754 10511 3749 10513 3750 10523 3757 10527
3761 10520 3757 10511
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...0.50-1 INCHES IN 1 HOUR
$$
ep3 follow-up statements
727
WGUS75 KPUB 212019
FFSPUB
Flash Flood Statement
National Weather Service Pueblo CO
219 PM MDT Tue Jul 21 2020
COC023-055-212245-
/O.CON.KPUB.FF.W.0034.000000T0000Z-200721T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Huerfano CO-Costilla CO-
219 PM MDT Tue Jul 21 2020
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 PM MDT FOR
CENTRAL HUERFANO AND NORTHEASTERN COSTILLA COUNTIES...
At 216 PM MDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Around one half inch of rain has already
fallen. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Life threatening flash flooding. Heavy rain producing flash
flooding.
SOURCE...Radar indicated.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
Excessive rainfall may produce debris flows, especially over the
western portion of the burn scar in Costilla County. The debris flow
can consist of rock, mud, vegetation and other loose materials.
Some locations that will experience flooding include...
Spring Burn Scar south of Highway 160 in Costilla county,
northwestern Spring Burn Scar south of Highway 160 in Huerfano county
and southern Spring Burn Scar north of Highway 160.
This includes the following areas, South Abeyta Creek near County
Road 443, South Abeyta Creek near County Road 442, and South Abeyta
Creek near County Road 441.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for flooding even in locations not receiving rain.
Arroyos, streams, and rivers can become raging killer currents in a
matter of minutes, even from distant rainfall.
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.
&&
LAT...LON 3754 10511 3749 10513 3750 10523 3757 10527
3761 10520 3757 10511
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...0.50-1 INCHES IN 1 HOUR
$$
ep163
WGUS75 KPUB 212101
FFSPUB
Flash Flood Statement
National Weather Service Pueblo CO
301 PM MDT Tue Jul 21 2020
COC023-055-212245-
/O.CON.KPUB.FF.W.0034.000000T0000Z-200721T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Huerfano CO-Costilla CO-
301 PM MDT Tue Jul 21 2020
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 PM MDT FOR
CENTRAL HUERFANO AND NORTHEASTERN COSTILLA COUNTIES...
At 300 PM MDT, Doppler radar indicated thunderstorms producing
mainly light rain across the warned area. Between one half inch and
one inch of rain has already fallen. Flash flooding is ongoing or
expected to begin shortly.
HAZARD...Life threatening flash flooding. Heavy rain producing flash
flooding.
SOURCE...Radar indicated.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
Some locations that will experience flooding include...
Spring Burn Scar south of Highway 160 in Costilla county,
northwestern Spring Burn Scar south of Highway 160 in Huerfano county
and southern Spring Burn Scar north of Highway 160.
This includes the following areas, South Abeyta Creek near County
Road 443, South Abeyta Creek near County Road 442, and South Abeyta
Creek near County Road 441.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
LAT...LON 3754 10511 3749 10513 3750 10523 3757 10527
3761 10520 3757 10511
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...0.30-0.50 INCHES IN 1 HOUR
$$
ep234
WGUS75 KPUB 212152
FFSPUB
Flash Flood Statement
National Weather Service Pueblo CO
352 PM MDT Tue Jul 21 2020
COC023-055-212201-
/O.CAN.KPUB.FF.W.0034.000000T0000Z-200721T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Huerfano CO-Costilla CO-
352 PM MDT Tue Jul 21 2020
...THE FLASH FLOOD WARNING FOR CENTRAL HUERFANO AND NORTHEASTERN
COSTILLA COUNTIES IS CANCELLED...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.
LAT...LON 3754 10511 3749 10513 3750 10523 3757 10527
3761 10520 3757 10511
$$
epThe office that day
Everything else NWS Pueblo, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 6:06 PM MDT | Special Weather Statement | PUB | 24 min | |
| Jul 20, 6:18 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Prowers | 42 min |
| Jul 20, 6:21 PM MDT | Severe Thunderstorm Warning | PUB | Baca, Las Animas | 39 min |
| Jul 20, 6:58 PM MDT | Severe Thunderstorm Warning | PUB | Baca, Bent, Las Animas | 35 min |
| Jul 20, 7:02 PM MDT | Special Weather Statement | PUB | Prowers | 28 min |
| Jul 20, 7:32 PM MDT | Special Weather Statement | PUB | Prowers | 28 min |
| Jul 20, 8:15 PM MDT | Special Weather Statement | PUB | Baca, Prowers | 30 min |
| Jul 20, 8:29 PM MDT | Special Weather Statement | PUB | Baca | 31 min |
| Jul 21, 1:07 PM MDT | Special Weather Statement | PUB | Custer | 23 min |
| Jul 21, 2:20 PM MDT | Special Weather Statement | PUB | Las Animas | 25 min |
| Jul 21, 2:24 PM MDT | Special Weather Statement | PUB | Teller | 36 min |
| Jul 21, 2:30 PM MDT | Special Weather Statement | PUB | Custer | 45 min |
| Jul 21, 2:54 PM MDT | Severe Thunderstorm Warning | PUB | El Paso, Teller | 23 min |
| Jul 21, 3:09 PM MDT | Special Weather Statement | PUB | Las Animas | 51 min |
| Jul 21, 3:12 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 48 min |
| Jul 21, 3:33 PM MDT | Special Weather Statement | PUB | El Paso | 27 min |
| Jul 21, 4:24 PM MDT | Special Weather Statement | PUB | El Paso | 36 min |
| Jul 21, 4:36 PM MDT | Special Weather Statement | PUB | Custer | 24 min |
| Jul 21, 4:51 PM MDT | Special Weather Statement | PUB | El Paso | 24 min |
| Jul 21, 5:06 PM MDT | Special Weather Statement | PUB | Huerfano | 24 min |
| Jul 21, 5:17 PM MDT | Special Weather Statement | PUB | Pueblo | 13 min |
| Jul 21, 5:18 PM MDT | Special Weather Statement | PUB | Crowley | 27 min |
| Jul 21, 5:37 PM MDT | Flash Flood Warning | PUB | Pueblo | 113 min |
| Jul 21, 5:58 PM MDT | Special Weather Statement | PUB | Pueblo | 17 min |
Nearby
Flash Flood Warnings in Colorado, 2020Every flash flood warning in 2020
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.