Alert archive / Colorado / Flash Flood Warnings in 2021

Flash Flood Warning 88, NWS Pueblo, CO

July 25, 2021Custer County, Fremont County, Pueblo County, Colorado

NWS Pueblo, CO issued this flash flood warning at Jul 25, 2021, 7:48 PM MDT for Custer County, Fremont County, Pueblo County, Colorado. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 25, 2021, 7:48 PM MDT (01:48 UTC)
Expired: Jul 25, 2021, 11:00 PM MDT
In force: 3 hr
Issued by: NWS Pueblo, CO
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

Counties Custer County, CO, Fremont County, CO, Pueblo County, CO

The radar

The Pueblo radar (KPUX), 89 km from the middle of the area, began a volume at 01:50 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.

What was reported inside it

Time	Report	Where	Remark
Jul 25, 9:12 PM MDT	HEAVY RAIN 2	2 Ssw Wetmore, CO

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 1.8 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 708 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 2464 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 69 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

As transmitted.

545 
WGUS55 KPUB 260148
FFWPUB
COC027-043-101-260500-
/O.NEW.KPUB.FF.W.0088.210726T0148Z-210726T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
748 PM MDT Sun Jul 25 2021

The National Weather Service in Pueblo has issued a

* Flash Flood Warning for...
  The Junkins Burn Scar in...
  Southeastern Fremont County in central Colorado...
  Northeastern Custer County in southeastern Colorado...
  West Central Pueblo County in southeastern Colorado...

* Until 1100 PM MDT.

* At 748 PM MDT, Doppler radar indicated thunderstorms producing 
  heavy rain over the Junkins Burn Scar. Between 1 and 1.5 inches of 
  rain have fallen. Flash flooding is ongoing or expected to begin 
  shortly. This Flash Flood Warning is for the entire burn scar 
  which include all of the drainages.

This Flash Flood Warning is also for areas north of the Junkins, 
including the town of Wetmore. So this warning encompasses more than 
the Junkins burn scar.

Excessive rainfall over the warning area will cause mud slides near 
steep terrain. The mud slide can consist of rock, mud, vegetation 
and other loose materials.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding in and around the Junkins
           Burn Scar.

  SOURCE...Radar.

  IMPACT...Life threatening flash flooding of areas in and around
           the Junkins Burn Scar.

* Some locations that will experience flash flooding include...
  Junkins Burn Scar and Wetmore.

This includes the following high risk locations...
Hardscrabble Creek near County Road 389, County Road 165 near 
Junkins Burn Scar, Forest Road 387 Bridge at South Hardscrabble 
Creek and Northcreek Road county line to Red Mountain Camp.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a life threatening situation. Heavy rainfall will cause 
extensive and severe flash flooding of creeks...streams...and 
ditches in the Junkins Burn Scar. Severe debris flows can also be 
anticipated across roads. Roads and driveways may be washed away in 
places. If you encounter flood waters...climb to safety.

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

&&

LAT...LON 3826 10517 3827 10510 3827 10507 3817 10502
      3810 10500 3809 10505 3807 10514 3810 10527
      3816 10523 3818 10521 3821 10520

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

KS

2 follow-up statements

757 
WGUS75 KPUB 260259
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
859 PM MDT Sun Jul 25 2021

COC027-043-101-260500-
/O.CON.KPUB.FF.W.0088.000000T0000Z-210726T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Custer CO-Fremont CO-Pueblo CO-
859 PM MDT Sun Jul 25 2021

...FLASH FLOOD WARNING FOR THE JUNKINS BURN SCAR REMAINS IN EFFECT 
UNTIL 11 PM MDT THIS EVENING FOR SOUTHEASTERN FREMONT, NORTHEASTERN 
CUSTER AND WEST CENTRAL PUEBLO COUNTIES...

At 859 PM MDT, Doppler radar indicated thunderstorms producing heavy 
rain over the Junkins Burn Scar. Between 1 and 1.5 inches of rain 
have fallen. Flash flooding is ongoing or expected to begin shortly. 
Lighter rain has replaced the heavy rain the Junkins was 
experiencing earlier.

Excessive rainfall over the warning area will cause mud slides near 
steep terrain. The mud slide can consist of rock, mud, vegetation 
and other loose materials.

HAZARD...Life threatening flash flooding. Thunderstorms producing
         flash flooding in and around the Junkins Burn Scar.

SOURCE...Radar.

IMPACT...Life threatening flash flooding of areas in and around
         the Junkins Burn Scar.

Some locations that will experience flash flooding include...
  Junkins Burn Scar and Wetmore.

This includes the following high risk locations...
Hardscrabble Creek near County Road 389, County Road 165 near 
Junkins Burn Scar, Forest Road 387 Bridge at South Hardscrabble 
Creek and Northcreek Road county line to Red Mountain Camp.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a life threatening situation. Heavy rainfall will cause 
extensive and severe flash flooding of creeks...streams...and 
ditches in the Junkins Burn Scar. Severe debris flows can also be 
anticipated across roads. Roads and driveways may be washed away in 
places. If you encounter flood waters...climb to safety.

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

&&

LAT...LON 3826 10517 3827 10510 3827 10507 3817 10502
      3810 10500 3809 10505 3807 10514 3810 10527
      3816 10523 3818 10521 3821 10520

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

KS

210 
WGUS75 KPUB 260454
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
1054 PM MDT Sun Jul 25 2021

COC027-043-101-260504-
/O.EXP.KPUB.FF.W.0088.000000T0000Z-210726T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Custer CO-Fremont CO-Pueblo CO-
1054 PM MDT Sun Jul 25 2021

...FLASH FLOOD WARNING FOR THE JUNKINS BURN SCAR WILL EXPIRE AT 11 
PM MDT THIS EVENING FOR SOUTHEASTERN FREMONT, NORTHEASTERN CUSTER 
AND WEST CENTRAL PUEBLO COUNTIES...

Flood waters have receded. The heavy rain has ended. Flooding is no 
longer expected to pose a threat. Please continue to heed remaining 
road closures. Light rain is still over the burn scar but flash 
flooding is no longer expected.

LAT...LON 3826 10517 3827 10510 3827 10507 3817 10502
      3810 10500 3809 10505 3807 10514 3810 10527
      3816 10523 3818 10521 3821 10520

$$

KS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 6:05 PM MDT	Special Weather Statement	PUB	Fremont	55 min
Jul 25, 6:33 PM MDT	Flash Flood Warning Considerable damage threat	PUB	Fremont	3 hr
Jul 25, 6:45 PM MDT	Special Weather Statement	PUB	Prowers	45 min
Jul 25, 7:11 PM MDT	Flash Flood Warning Considerable damage threat	PUB	Custer, Fremont	3 hr
Jul 25, 7:27 PM MDT	Special Weather Statement	PUB	Custer	48 min
Jul 25, 8:07 PM MDT	Flash Flood Warning Considerable damage threat	PUB	Custer, Huerfano, Pueblo	3 hr
Jul 26, 3:56 PM MDT	Special Weather Statement	PUB	Las Animas	49 min
Jul 26, 4:48 PM MDT	Special Weather Statement	PUB		42 min
Jul 26, 5:35 PM MDT	Special Weather Statement	PUB	Baca	40 min

Nearby

Flash Flood Warnings in Colorado, 2021 Every flash flood warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.