Alert archive / Colorado / Flash Flood Warnings in 2017

Flash Flood Warning 10, NWS Pueblo, CO

June 6, 2017Custer County, Fremont County, Saguache County, Colorado

NWS Pueblo, CO issued this flash flood warning at Jun 6, 2017, 3:17 PM MDT for Custer County, Fremont County, Saguache 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
Jun 6, 2017, 3:17 PM MDT (21:17 UTC)
Expired
Jun 6, 2017, 6:15 PM MDT
In force
3 hr
Issued by
NWS Pueblo, CO
Area
Storm-based polygon
Flood severity
None

Counties Custer County, CO, Fremont County, CO, Saguache County, CO

The radar

The Pueblo radar (KPUX), 140 km from the middle of the area, began a volume at 21:20 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

Grand Junction, CO (KGJT), launched 12:00Z, 9.3 hours before the alert went out and 253 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.

Skew-T log-pSkew-T log-p diagram, Grand Junction, CO at 12:00Z on 2017-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 21 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Grand Junction, CO at 12:00Z on 2017-06-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
21 J/kg
Mixed-layer CIN
-367 J/kg
Mixed-layer LCL
2663 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
35 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

218 
WGUS55 KPUB 062117
FFWPUB
COC027-043-109-070015-
/O.NEW.KPUB.FF.W.0010.170606T2117Z-170607T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
317 PM MDT TUE JUN 6 2017

The National Weather Service in Pueblo has issued a

* Flash Flood Warning for...
  Southwestern Fremont County in central Colorado...
  Northwestern Custer County in southeastern Colorado...
  Northeastern Saguache County in central Colorado...

* Until 615 PM MDT

* At 316 PM MDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the Hayden Pass burn scar. Flash flooding is 
  expected to begin shortly.

* Some locations that will experience flooding include...
  Coaldale.

Excessive rainfall over the burn scar will result in debris flow 
moving through the Hayden Pass Burn Scar. The debris flow can 
consist of rock, mud, vegetation and other loose materials.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

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 3830 10587 3842 10576 3830 10563 3822 10576

$$

kam
3 follow-up statements
848 
WGUS75 KPUB 062202
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
402 PM MDT TUE JUN 6 2017

COC027-043-109-070015-
/O.CON.KPUB.FF.W.0010.000000T0000Z-170607T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fremont CO-Custer CO-Saguache CO-
402 PM MDT TUE JUN 6 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 PM MDT FOR
SOUTHWESTERN FREMONT...NORTHWESTERN CUSTER AND NORTHEASTERN SAGUACHE
COUNTIES...

At 400 PM MDT, the law enforcement reported flash flooding occurring 
over the Hayden Pass Burn Scar.

Excessive rainfall over the burn scar has resulted in debris flow 
moving through the Cottonwood Creek drainage, under US Highway 50 
into the Arkansas River. The debris flow can consist of rock, mud, 
vegetation and other loose materials.

Some locations that will experience flooding include...
Coaldale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

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 3830 10587 3842 10576 3830 10563 3822 10576

$$

kam
422 
WGUS75 KPUB 062256
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
456 PM MDT TUE JUN 6 2017

COC027-043-109-070015-
/O.CON.KPUB.FF.W.0010.000000T0000Z-170607T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fremont CO-Custer CO-Saguache CO-
456 PM MDT TUE JUN 6 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 PM MDT FOR
SOUTHWESTERN FREMONT...NORTHWESTERN CUSTER AND NORTHEASTERN SAGUACHE
COUNTIES...

At 454 PM MDT, emergency management reported minor flooding in 
Coaldale from water and debris coming from the Hayden Pass Burn 
Scar.  This flooding has been moving into the Arkansas River.

Continued light rain over the burn scar may result in additional 
debris flow moving through the Cottonwood and Hardscrabble Creek 
drainages. The debris flow can consist of rock, mud, vegetation and 
other loose materials.

Some locations that will continue to experience flooding include...
Coaldale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

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 3830 10587 3842 10576 3830 10563 3822 10576

$$

kam
835 
WGUS75 KPUB 070007
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
607 PM MDT TUE JUN 6 2017

COC027-043-109-070016-
/O.EXP.KPUB.FF.W.0010.000000T0000Z-170607T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fremont CO-Custer CO-Saguache CO-
607 PM MDT TUE JUN 6 2017

...THE FLASH FLOOD WARNING FOR SOUTHWESTERN FREMONT...NORTHWESTERN
CUSTER AND NORTHEASTERN SAGUACHE COUNTIES WILL EXPIRE AT 615 PM
MDT...

The heavy rain has ended, but periods of light rain may continue 
through much of this evening. At this time, flooding is no longer 
expected to pose a threat. Areas along Cottonwood and Hardscrabble 
Creeks may be unstable due to high water flows, stay away from 
stream banks as they could collapse.  Please continue to heed any 
remaining road closures.

LAT...LON 3830 10587 3842 10576 3830 10563 3822 10576

$$

kam

The office that day

Everything else NWS Pueblo, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 5, 6:13 PM MDTSpecial Weather StatementPUBLas Animas47 min
Jun 5, 8:47 PM MDTSpecial Weather StatementPUBPueblo43 min
Jun 5, 9:39 PM MDTSpecial Weather StatementPUBPueblo51 min
Jun 6, 1:22 PM MDTSpecial Weather StatementPUBTeller23 min
Jun 6, 1:41 PM MDTAreal Flood AdvisoryPUBTeller3 hr
Jun 6, 1:45 PM MDTSpecial Weather StatementPUBCostilla30 min
Jun 6, 1:55 PM MDTSpecial Weather StatementPUBTeller35 min
Jun 6, 1:57 PM MDTSpecial Weather StatementPUBKiowa48 min
Jun 6, 2:14 PM MDTSevere Thunderstorm WarningPUBKiowa, Prowers19 min
Jun 6, 2:42 PM MDTSpecial Weather StatementPUBKiowa33 min
Jun 6, 2:51 PM MDTSpecial Weather StatementPUBEl Paso39 min
Jun 6, 2:57 PM MDTSevere Thunderstorm WarningPUBEl Paso33 min
Jun 6, 3:15 PM MDTSpecial Weather StatementPUBProwers45 min
Jun 6, 3:24 PM MDTSevere Thunderstorm WarningPUBEl Paso51 min
Jun 6, 3:26 PM MDTFlash Flood WarningPUBEl Paso3 hr
Jun 6, 3:34 PM MDTSpecial Weather StatementPUBPueblo41 min
Jun 6, 3:35 PM MDTAreal Flood AdvisoryPUBBent, Kiowa, Prowers3 hr
Jun 6, 3:38 PM MDTSevere Thunderstorm WarningPUBCuster, Fremont, Pueblo52 min
Jun 6, 3:55 PM MDTSpecial Weather StatementPUBHuerfano50 min
Jun 6, 3:58 PM MDTSevere Thunderstorm WarningPUBBent, Prowers47 min
Jun 6, 4:21 PM MDTAreal Flood AdvisoryPUBHuerfano, Las Animas3 hr
Jun 6, 4:22 PM MDTSevere Thunderstorm WarningPUBFremont, Pueblo23 min
Jun 6, 4:36 PM MDTSpecial Weather StatementPUBPueblo24 min
Jun 6, 4:42 PM MDTSevere Thunderstorm WarningPUBPueblo48 min
Jun 6, 4:48 PM MDTSpecial Weather StatementPUBBaca42 min
Jun 6, 5:08 PM MDTSpecial Weather StatementPUBKiowa52 min
Jun 6, 5:11 PM MDTSpecial Weather StatementPUBLas Animas49 min
Jun 6, 5:22 PM MDTSevere Thunderstorm WarningPUBBaca24 min
Jun 6, 5:26 PM MDTSpecial Weather StatementPUBCrowley49 min
Jun 6, 5:36 PM MDTSevere Thunderstorm WarningPUBKiowa24 min
Jun 6, 5:56 PM MDTSevere Thunderstorm WarningPUBKiowa49 min

Nearby

Flash Flood Warnings in Colorado, 2017Every flash flood warning in 2017

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.