Alert archive / Colorado / Flash Flood Warnings in 2018
Flash Flood Warning 48, NWS Pueblo, CO
NWS Pueblo, CO issued this flash flood warning at Aug 17, 2018, 3:58 PM MDT for Costilla County, Huerfano 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
- Aug 17, 2018, 3:58 PM MDT (21:58 UTC)
- Expired
- Aug 17, 2018, 8:29 PM MDT
- In force
- 5 hr
- Issued by
- NWS Pueblo, CO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Costilla County, CO, Huerfano County, CO
The radar
The Pueblo radar (KPUX), 124 km from the middle of the area, began a volume at 21:59 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 (KDEN), launched 12:00Z, 10.0 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
- 21 J/kg
- Mixed-layer CIN
- -412 J/kg
- Mixed-layer LCL
- 1779 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
730 WGUS55 KPUB 172158 FFWPUB COC023-055-180100- /O.NEW.KPUB.FF.W.0048.180817T2158Z-180818T0100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Pueblo CO 358 PM MDT FRI AUG 17 2018 The National Weather Service in Pueblo has issued a * Flash Flood Warning for... West central Huerfano County in southeastern Colorado... Northeastern Costilla County in south central Colorado... * Until 700 PM MDT. * At 357 PM MDT, Doppler radar indicated thunderstorms producing heavy rain across the norther portions of the Spring burn scar. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... La Veta Pass and the Spring burn scar.. Excessive rainfall over the burn scar will result in debris flow moving through the northern portions of the Spring burn scar. The debris flow can consist of rock, mud, vegetation and other loose materials. LAT...LON 3769 10498 3747 10504 3752 10528 3769 10526 $$ 28
7 follow-up statements
544 WGUS75 KPUB 172221 FFSPUB Flash Flood Statement National Weather Service Pueblo CO 421 PM MDT FRI AUG 17 2018 COC023-055-180100- /O.CON.KPUB.FF.W.0048.000000T0000Z-180818T0100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Huerfano CO-Costilla CO- 421 PM MDT FRI AUG 17 2018 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM MDT FOR WEST CENTRAL HUERFANO AND NORTHEASTERN COSTILLA COUNTIES... At 419 PM MDT, Doppler radar indicated thunderstorms producing heavy rain over northern portions of the Spring burn scar. Flash flooding is expected to begin shortly. Excessive rainfall over the burn scar will result in debris flow moving through northern portions of the Spring burn scar. The debris flow can consist of rock, mud, vegetation and other loose materials. Some locations that will experience flooding include... La Veta Pass and northern portions of the Spring burn scar. LAT...LON 3769 10498 3747 10504 3752 10528 3769 10526 $$ 28
522 WGUS75 KPUB 172246 FFSPUB Flash Flood Statement National Weather Service Pueblo CO 446 PM MDT FRI AUG 17 2018 COC023-055-180100- /O.CON.KPUB.FF.W.0048.000000T0000Z-180818T0100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Huerfano CO-Costilla CO- 446 PM MDT FRI AUG 17 2018 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM MDT FOR WEST CENTRAL HUERFANO AND NORTHEASTERN COSTILLA COUNTIES... At 443 PM MDT, Doppler radar indicated thunderstorms producing heavy rain across northern portions of the Spring burn scar. Flash flooding is expected. Excessive rainfall over the burn scar will result in debris flow moving through the northern portions of the Spring burn scar. The debris flow can consist of rock, mud, vegetation and other loose materials. Some locations that will experience flooding include... La Veta Pass and northern areas of the Spring burn scar. 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 3752 10528 3769 10526 3769 10498 3747 10504 $$ 28
248 WGUS75 KPUB 172308 FFSPUB Flash Flood Statement National Weather Service Pueblo CO 508 PM MDT FRI AUG 17 2018 COC023-055-180100- /O.CON.KPUB.FF.W.0048.000000T0000Z-180818T0100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Huerfano CO-Costilla CO- 508 PM MDT FRI AUG 17 2018 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM MDT FOR WEST CENTRAL HUERFANO AND NORTHEASTERN COSTILLA COUNTIES... At 506 PM MDT, Doppler radar indicated thunderstorms producing light to moderate rain across the northern portions of the Spring burn scar. Radar estimates that up to two inches of rain may have already fallen. Flash flooding is expected. Excessive rainfall over the burn scar will result in debris flow moving through the northern portions of the Spring burn scar. The debris flow can consist of rock, mud, vegetation and other loose materials. Some locations that will experience flooding include... La Veta Pass and northern portions of the Spring burn scar. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move away from recently burned areas. Life-threatening flooding of creeks, roads and normally dry arroyos is likely. The heavy rains will likely trigger rockslides, mudslides and debris flows in steep terrain, especially in and around these areas. && LAT...LON 3752 10528 3769 10526 3769 10498 3747 10504 $$ 28
903 WGUS75 KPUB 172330 FFSPUB Flash Flood Statement National Weather Service Pueblo CO 530 PM MDT FRI AUG 17 2018 COC023-055-180100- /O.CON.KPUB.FF.W.0048.000000T0000Z-180818T0100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Huerfano CO-Costilla CO- 530 PM MDT FRI AUG 17 2018 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM MDT FOR WEST CENTRAL HUERFANO AND NORTHEASTERN COSTILLA COUNTIES... At 529 PM MDT, Doppler radar indicated thunderstorms producing light to moderate rain across some northern portions of the Spring burn scar. Flash flooding is expected. Excessive rainfall over the northern portions of the burn scar will result in debris flows. The debris flow can consist of rock, mud, vegetation and other loose materials. Some locations that will experience flooding include... La Veta Pass and northern portions of the Spring burn scar. 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 3752 10528 3769 10526 3769 10498 3747 10504 $$ 28
446 WGUS75 KPUB 172349 FFSPUB Flash Flood Statement National Weather Service Pueblo CO 549 PM MDT FRI AUG 17 2018 COC023-055-180100- /O.CON.KPUB.FF.W.0048.000000T0000Z-180818T0100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Huerfano CO-Costilla CO- 549 PM MDT FRI AUG 17 2018 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM MDT FOR WEST CENTRAL HUERFANO AND NORTHEASTERN COSTILLA COUNTIES... At 547 PM MDT, Doppler radar showed that rain had moved off the Spring burn scar.torms producing heavy rain across the warned area. However, with all the rain that fell earlier, flash flooding is expected to continue over northern portions of the burn scar. Excessive rainfall over the burn scar will result in debris flow. The debris flow can consist of rock, mud, vegetation and other loose materials. Some locations that will experience flooding include... La Veta Pass and northern portions of the Spring burn scar. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain alert for flooding even in locations not receiving rain. Arroyos, streams, and rivers can become raging killer currents in a matter of minutes, even from distant rainfall. Move away from recently burned areas. Life-threatening flooding of creeks, roads and normally dry arroyos is likely. The heavy rains will likely trigger rockslides, mudslides and debris flows in steep terrain, especially in and around these areas. && LAT...LON 3752 10528 3769 10526 3769 10498 3747 10504 $$ 28
667 WGUS55 KPUB 180054 FFWPUB COC023-055-180400- /O.EXT.KPUB.FF.W.0048.000000T0000Z-180818T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Pueblo CO 654 PM MDT FRI AUG 17 2018 The National Weather Service in Pueblo has extended the * Flash Flood Warning for... West central Huerfano County in southeastern Colorado... Northeastern Costilla County in south central Colorado... * Until 1000 PM MDT. * At 652 PM MDT, Doppler radar indicated moderate rain across a portion of the Spring burn scar. With all the rain that fell earlier today, and this additional rain, flash flooding is expected to continue. * Some locations that will experience flooding include... La Veta Pass and the northern half of the Spring burn scar. Excessive rainfall over the burn scar will result in debris flow. The debris flow can consist of rock, mud, vegetation and other loose materials. 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 3752 10528 3769 10526 3769 10498 3747 10504 $$ 28
393 WGUS75 KPUB 180229 FFSPUB Flash Flood Statement National Weather Service Pueblo CO 829 PM MDT FRI AUG 17 2018 COC023-055-180238- /O.CAN.KPUB.FF.W.0048.000000T0000Z-180818T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Huerfano CO-Costilla CO- 829 PM MDT FRI AUG 17 2018 ...THE FLASH FLOOD WARNING FOR WEST CENTRAL HUERFANO AND NORTHEASTERN COSTILLA COUNTIES IS CANCELLED... The heavy rain has ended over the Spring burn scar, and flood waters have receded. Flooding is no longer expected to pose a threat. Please continue to heed any remaining road closures. LAT...LON 3752 10528 3769 10526 3769 10498 3747 10504 $$ 28
The office that day
Everything else NWS Pueblo, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 1:41 PM MDT | Special Weather Statement | PUB | Huerfano | 49 min |
| Aug 17, 2:29 PM MDT | Areal Flood Advisory | PUB | Custer, Pueblo | 3 hr |
| Aug 17, 2:38 PM MDT | Severe Thunderstorm Warning | PUB | El Paso, Teller | 37 min |
| Aug 17, 2:46 PM MDT | Special Weather Statement | PUB | Pueblo | 44 min |
| Aug 17, 2:56 PM MDT | Severe Thunderstorm Warning | PUB | Huerfano, Pueblo | 34 min |
| Aug 17, 3:06 PM MDT | Areal Flood Advisory | PUB | El Paso | 3 hr |
| Aug 17, 3:10 PM MDT | Severe Thunderstorm Warning | PUB | El Paso, Teller | 35 min |
| Aug 17, 3:40 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 35 min |
| Aug 17, 3:54 PM MDT | Special Weather Statement | PUB | Otero | 51 min |
| Aug 17, 4:02 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 28 min |
| Aug 17, 4:26 PM MDT | Severe Thunderstorm Warning | PUB | Crowley, Otero | 49 min |
| Aug 17, 4:27 PM MDT | Severe Thunderstorm Warning | PUB | El Paso, Pueblo | 48 min |
| Aug 17, 4:34 PM MDT | Severe Thunderstorm Warning | PUB | Fremont, Teller | 41 min |
Nearby
Flash Flood Warnings in Colorado, 2018Every flash flood warning in 2018
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.