Alert archive / Colorado / Flash Flood Warnings in 2017

Flash Flood Warning 32, NWS Pueblo, CO

July 26, 2017Custer County, Pueblo County, Colorado

NWS Pueblo, CO issued this flash flood warning at Jul 26, 2017, 5:39 PM MDT for Custer County, Pueblo 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
Jul 26, 2017, 5:39 PM MDT (23:39 UTC)
Expired
Jul 26, 2017, 8:45 PM MDT
In force
3 hr
Issued by
NWS Pueblo, CO
Area
Storm-based polygon
Flood severity
None

Counties Custer County, CO, Pueblo County, CO

The radar

The Pueblo radar (KPUX), 87 km from the middle of the area, began a volume at 23:39 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, 11.7 hours before the alert went out and 250 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, Denver, CO at 12:00Z on 2017-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Denver, CO at 12:00Z on 2017-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
996 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
57 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

653 
WGUS55 KPUB 262339
FFWPUB
COC027-101-270245-
/O.NEW.KPUB.FF.W.0032.170726T2339Z-170727T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
539 PM MDT WED JUL 26 2017

The National Weather Service in Pueblo has issued a

* Flash Flood Warning for...
  East central Custer County in southeastern Colorado...
  West central Pueblo County in southeastern Colorado...

* Until 845 PM MDT

* At 537 PM MDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Flash flooding is expected to
  begin shortly.

* Flash flooding will remain over Junkins Burn scar of mainly rural 
  areas of east central Custer and west central Pueblo Counties.
  The debris flow can consist of rock, mud, vegetation and other 
  loose materials.

This includes the following streams and drainages...South Red
Creek...Middle Creek...Yellow Creek...Smith Creek...Bishop Creek...
Junkins Park Creek...Antelope Creek...South Fork North Hardscrabble
Creek...Lefthand Fork North Creek...South Hardscrabble Creek...Ditch
Creek...North Saint Charles River...Middle Hardscrabble Creek...
Hardscrabble Creek...North Hardscrabble Creek and Middle Red Creek.

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 3821 10501 3810 10500 3809 10524 3815 10524

$$

mw
2 follow-up statements
255 
WGUS75 KPUB 270025
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
625 PM MDT WED JUL 26 2017

COC027-101-270245-
/O.CON.KPUB.FF.W.0032.000000T0000Z-170727T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Custer CO-Pueblo CO-
625 PM MDT WED JUL 26 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM MDT FOR
EAST CENTRAL CUSTER AND WEST CENTRAL PUEBLO COUNTIES...

At 620 PM MDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area, with the heaviest rain currently 
falling on northern and eastern portions of the Junkins Burn Scar. 
Doppler radar is indicating up to one inch of rain has already 
fallen across the area, with flash flooding across the Junkins Burn 
Scar likely occuring. 

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

Flash flooding will remain over mainly rural areas of east central
Custer and west central Pueblo Counties.

This includes the following streams and drainages...South Red
Creek...Middle Creek...Yellow Creek...Smith Creek...Bishop Creek...
Junkins Park Creek...Antelope Creek...South Fork North Hardscrabble
Creek...Lefthand Fork North Creek...South Hardscrabble Creek...Ditch
Creek...North Saint Charles River...Middle Hardscrabble Creek...
Hardscrabble Creek...North Hardscrabble Creek and Middle Red Creek.

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 3821 10501 3810 10500 3809 10524 3815 10524

$$

mw
067 
WGUS75 KPUB 270156
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
756 PM MDT WED JUL 26 2017

COC027-101-270206-
/O.CAN.KPUB.FF.W.0032.000000T0000Z-170727T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Custer CO-Pueblo CO-
756 PM MDT WED JUL 26 2017

...THE FLASH FLOOD WARNING FOR EAST CENTRAL CUSTER AND WEST CENTRAL
PUEBLO COUNTIES IS CANCELLED...

The heavy rain has ended. Flood waters have receded. Flooding is no
longer expected to pose a threat. Please continue to heed any
remaining road closures.

LAT...LON 3821 10501 3810 10500 3809 10524 3815 10524

$$

Hodanish

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 25, 6:03 PM MDTSpecial Weather StatementPUBSaguache27 min
Jul 25, 6:24 PM MDTAreal Flood AdvisoryPUBBent, Kiowa, Prowers3 hr
Jul 25, 6:34 PM MDTSpecial Weather StatementPUBFremont26 min
Jul 25, 6:45 PM MDTAreal Flood AdvisoryPUBCuster, Fremont, Saguache3 hr
Jul 25, 7:04 PM MDTSpecial Weather StatementPUBKiowa41 min
Jul 26, 4:24 AM MDTFlash Flood WatchPUBAlamosa, Baca, Bent, Chaffee, Costilla, Crowley and 11 more23 hr
Jul 26, 3:00 PM MDTSpecial Weather StatementPUBEl Paso30 min
Jul 26, 3:08 PM MDTSevere Thunderstorm WarningPUBEl Paso52 min
Jul 26, 3:37 PM MDTAreal Flood AdvisoryPUBEl Paso3 hr
Jul 26, 3:50 PM MDTSpecial Weather StatementPUBLas Animas40 min
Jul 26, 3:55 PM MDTFlash Flood WarningPUBEl Paso2 hr
Jul 26, 4:10 PM MDTSpecial Weather StatementPUBSaguache35 min
Jul 26, 4:12 PM MDTSpecial Weather StatementPUBTeller48 min
Jul 26, 4:22 PM MDTSevere Thunderstorm WarningPUBHuerfano, Las Animas23 min
Jul 26, 4:33 PM MDTFlash Flood WarningPUBTeller3 hr
Jul 26, 4:36 PM MDTSpecial Weather StatementPUBLas Animas24 min
Jul 26, 4:40 PM MDTSpecial Weather StatementPUBEl Paso50 min
Jul 26, 4:43 PM MDTSpecial Weather StatementPUBHuerfano47 min
Jul 26, 4:49 PM MDTAreal Flood AdvisoryPUBHuerfano, Las Animas116 min
Jul 26, 5:01 PM MDTAreal Flood AdvisoryPUBEl Paso, Pueblo3 hr
Jul 26, 5:04 PM MDTSpecial Weather StatementPUBTeller41 min
Jul 26, 5:19 PM MDTSpecial Weather StatementPUBLas Animas41 min
Jul 26, 5:31 PM MDTSpecial Weather StatementPUBCuster29 min
Jul 26, 5:50 PM MDTAreal Flood AdvisoryPUBLas Animas115 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.