Alert archive / Colorado / Flash Flood Warnings in 2017

Flash Flood Warning 26, NWS Pueblo, CO

July 16, 2017Custer County, Pueblo County, Colorado

NWS Pueblo, CO issued this flash flood warning at Jul 16, 2017, 5:57 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 16, 2017, 5:57 PM MDT (23:57 UTC)
Expired
Jul 16, 2017, 9:00 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), 88 km from the middle of the area, began a volume at 23:57 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, 12.0 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, Denver, CO at 12:00Z on 2017-07-16Temperature 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 2017-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1967 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
-2 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.

473 
WGUS55 KPUB 162357
FFWPUB
COC027-101-170300-
/O.NEW.KPUB.FF.W.0026.170716T2357Z-170717T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
557 PM MDT SUN JUL 16 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... 
  Including the North Creek Drainage on the Junkins Burn Scar.

* Until 900 PM MDT

* At 554 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 mainly rural areas of east central 
  Custer and west central Pueblo Counties.  It will impact the 
  eastern part of the Junkins burn scar including the North Creek 
  Drainage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.

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 3807 10510 3811 10515 3813 10514 3817 10510
      3815 10502 3808 10501

$$

LW
2 follow-up statements
743 
WGUS75 KPUB 170031
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
631 PM MDT SUN JUL 16 2017

COC027-101-170300-
/O.CON.KPUB.FF.W.0026.000000T0000Z-170717T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Custer CO-Pueblo CO-
631 PM MDT SUN JUL 16 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 900 PM MDT FOR
EAST CENTRAL CUSTER AND WEST CENTRAL PUEBLO COUNTIES...
...Including the North Creek Drainage on the Junkins Burn Scar...

At 626 PM MDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area.  Flash flooding is expected to begin
shortly.

Excessive rainfall over the burn scar will result in debris flow 
moving through the North Creek Drainage of the Junkins burn scar. 
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. It will impact the eastern 
part of the Junkins burn scar including the North Creek Drainage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.

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 3807 10510 3811 10515 3813 10514 3817 10510
      3815 10502 3808 10501

$$

LW
061 
WGUS75 KPUB 170055
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
655 PM MDT SUN JUL 16 2017

COC027-101-170105-
/O.CAN.KPUB.FF.W.0026.000000T0000Z-170717T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Custer CO-Pueblo CO-
655 PM MDT SUN JUL 16 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 on the Junkins burn scar. Please 
continue to heed any remaining road closures.

LAT...LON 3807 10510 3811 10515 3813 10514 3817 10510
      3815 10502 3808 10501

$$

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 15, 10:48 PM MDTFlash Flood WarningPUBCuster, Fremont3 hr
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

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.