Alert archive / Colorado / Flash Flood Warnings in 2017

Flash Flood Warning 23, NWS Pueblo, CO

July 15, 2017Custer County, Fremont County, Colorado

NWS Pueblo, CO issued this flash flood warning at Jul 15, 2017, 10:48 PM MDT for Custer County, Fremont 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 15, 2017, 10:48 PM MDT (04:48 UTC)
Expired
Jul 16, 2017, 1:45 AM MDT
In force
3 hr
Issued by
NWS Pueblo, CO
Area
Storm-based polygon
Flood severity
None

Counties Custer County, CO, Fremont County, CO

The radar

The Pueblo radar (KPUX), 138 km from the middle of the area, began a volume at 04:48 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 00:00Z, 4.8 hours before the alert went out and 255 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 00:00Z on 2017-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 121 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 00:00Z on 2017-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 square meters per square second.1939Sfc1 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
121 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
3542 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

141 
WGUS55 KPUB 160448
FFWPUB
COC027-043-160745-
/O.NEW.KPUB.FF.W.0023.170716T0448Z-170716T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
1048 PM MDT SAT JUL 15 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...

* Until 145 AM MDT

* At 1042 PM MDT, local law enforcement reported flash flooding 
  along County Road 6 along Hayden Creek on the west side of the 
  Hayden Pass burn scar. Flash flooding is already occurring.

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

Excessive rainfall over the Hayden Pass burn scar will result in 
debris flow moving through the Hayden Creek and its tributaries. The 
debris flow can consist of rock, mud, vegetation and other loose 
materials.  Pueblo doppler radar estimated up to an inch of rain 
fell on the northwestern side of the burn scar, and just under one 
half of an inch fell on the burn scar's eastern side in the Oak 
Creek drainage. Any additional rainfall through 1100 PM will be 
light, however flash flooding is expected to continue until the 
water has a chance to recede.   

This includes the following streams and drainages...Middle Prong 
Hayden Creek...South Prong...Wolf Creek...and Oak Creek.


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 3834 10569 3826 10568 3825 10573 3827 10580
      3828 10583 3832 10587 3837 10575

$$

KT
1 follow-up statement
572 
WGUS75 KPUB 160546
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
1146 PM MDT SAT JUL 15 2017

COC027-043-160556-
/O.CAN.KPUB.FF.W.0023.000000T0000Z-170716T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fremont CO-Custer CO-
1146 PM MDT SAT JUL 15 2017

...THE FLASH FLOOD WARNING FOR SOUTHWESTERN FREMONT AND NORTHWESTERN
CUSTER COUNTIES IS CANCELLED...

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

LAT...LON 3834 10569 3826 10568 3825 10573 3827 10580
      3828 10583 3832 10587 3837 10575

$$

KT

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 15, 6:08 PM MDTAreal Flood AdvisoryPUBBent, Crowley, Kiowa, Otero, Prowers3 hr
Jul 15, 6:08 PM MDTSpecial Weather StatementPUBChaffee37 min
Jul 15, 6:35 PM MDTSpecial Weather StatementPUBProwers40 min
Jul 15, 6:39 PM MDTAreal Flood AdvisoryPUBChaffee111 min
Jul 15, 6:39 PM MDTSevere Thunderstorm WarningPUBBaca, Prowers18 min
Jul 15, 6:43 PM MDTSevere Thunderstorm WarningPUBChaffee, Fremont32 min
Jul 15, 7:00 PM MDTSpecial Weather StatementPUBProwers30 min
Jul 15, 7:15 PM MDTSpecial Weather StatementPUBChaffee45 min
Jul 15, 7:19 PM MDTAreal Flood AdvisoryPUBChaffee116 min
Jul 15, 7:38 PM MDTAreal Flood AdvisoryPUBMineral, Rio Grande112 min
Jul 15, 7:53 PM MDTFlash Flood WarningPUBChaffee112 min
Jul 15, 8:04 PM MDTFlash Flood WarningPUBCuster, Fremont3 hr
Jul 15, 8:17 PM MDTSpecial Weather StatementPUBSaguache28 min
Jul 16, 12:34 PM MDTFlash Flood WarningPUBChaffee116 min
Jul 16, 1:18 PM MDTAreal Flood AdvisoryPUBChaffee117 min
Jul 16, 2:27 PM MDTAreal Flood AdvisoryPUBChaffee3 hr
Jul 16, 2:41 PM MDTFlash Flood WarningPUBCuster, Fremont4 hr
Jul 16, 3:03 PM MDTSevere Thunderstorm WarningPUBFremont21 min
Jul 16, 3:17 PM MDTAreal Flood AdvisoryPUBChaffee3 hr
Jul 16, 3:18 PM MDTSpecial Weather StatementPUB42 min
Jul 16, 3:28 PM MDTSpecial Weather StatementPUBSaguache32 min
Jul 16, 3:39 PM MDTSevere Thunderstorm WarningPUBLas Animas66 min
Jul 16, 3:47 PM MDTSevere Thunderstorm WarningPUBCuster, Saguache43 min
Jul 16, 3:59 PM MDTSevere Thunderstorm WarningPUBMineral, Rio Grande, Saguache31 min
Jul 16, 4:12 PM MDTSevere Thunderstorm WarningPUBBaca, Las Animas33 min
Jul 16, 4:35 PM MDTSpecial Weather StatementPUBRio Grande40 min
Jul 16, 4:45 PM MDTSevere Thunderstorm WarningPUBBaca, Las Animas30 min
Jul 16, 5:45 PM MDTSpecial Weather StatementPUBAlamosa45 min
Jul 16, 5:51 PM MDTSpecial Weather StatementPUBCuster39 min
Jul 16, 5:57 PM MDTFlash Flood WarningPUBCuster, Pueblo3 hr

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.