Alert archive / Colorado / Flash Flood Warnings in 2021

Flash Flood Warning 10, NWS Pueblo, CO

May 18, 2021Custer County, Pueblo County, Colorado

NWS Pueblo, CO issued this flash flood warning at May 18, 2021, 9:36 AM 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: May 18, 2021, 9:36 AM MDT (15:36 UTC)
Expired: May 18, 2021, 12:30 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), 92 km from the middle of the area, began a volume at 15:39 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 (KDNR), launched 12:00Z, 3.6 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-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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 853 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 117 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

678 
WGUS55 KPUB 181536
FFWPUB
COC027-101-181830-
/O.NEW.KPUB.FF.W.0010.210518T1536Z-210518T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
936 AM MDT Tue May 18 2021

The National Weather Service in Pueblo has issued a

* Flash Flood Warning for...
  The Junkins Burn Scar in...
  East Central Custer County in southeastern Colorado...
  West Central Pueblo County in southeastern Colorado...

* Until 1230 PM MDT.

* At 936 AM MDT, Doppler radar indicated thunderstorms producing 
  heavy rain over the Junkins Burn Scar. Up to 0.5 to 1 inch of rain 
  has fallen. Flash flooding is ongoing or expected to begin shortly.

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

  HAZARD...Flash flooding caused by thunderstorms in and around
           the Junkins Burn Scar.

  SOURCE...Doppler radar.

  IMPACT...Flooding of areas in and around the Junkins Burn Scar.

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

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

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 3815 10525 3819 10505 3808 10497 3809 10524

FLASH FLOOD...RADAR INDICATED

$$

Rodriguez

1 follow-up statement

849 
WGUS75 KPUB 181648
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
1048 AM MDT Tue May 18 2021

COC027-101-181830-
/O.CON.KPUB.FF.W.0010.000000T0000Z-210518T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Custer CO-Pueblo CO-
1048 AM MDT Tue May 18 2021

...FLASH FLOOD WARNING FOR THE JUNKINS BURN SCAR REMAINS IN EFFECT 
UNTIL 1230 PM MDT THIS AFTERNOON FOR EAST CENTRAL CUSTER AND WEST 
CENTRAL PUEBLO COUNTIES...

At 1048 AM MDT, Doppler radar indicated thunderstorms producing 
heavy rain over the Junkins Burn Scar. Up to 1 inch of rain has 
fallen. Flash flooding is ongoing or expected to begin shortly.

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

HAZARD...Flash flooding caused by thunderstorms in and around the
         Junkins Burn Scar.

SOURCE...Doppler radar.

IMPACT...Flooding of areas in and around the Junkins Burn Scar.

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

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

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 3815 10525 3819 10505 3808 10497 3809 10524

FLASH FLOOD...RADAR INDICATED

$$

Rodriguez

The office that day

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

Issued	Product	Office	Counties	Lasted
May 17, 6:11 PM MDT	Special Weather Statement	PUB	Crowley, Las Animas, Otero, Pueblo	49 min
May 17, 6:12 PM MDT	Special Weather Statement	PUB	Las Animas	48 min
May 17, 6:20 PM MDT	Special Weather Statement	PUB	Prowers	25 min
May 17, 6:23 PM MDT	Special Weather Statement	PUB	Teller	37 min
May 17, 6:29 PM MDT	Flash Flood Warning Considerable damage threat	PUB	El Paso	3 hr
May 17, 6:29 PM MDT	Special Weather Statement	PUB	Baca	61 min
May 17, 6:53 PM MDT	Special Weather Statement	PUB	Baca	37 min
May 17, 6:56 PM MDT	Special Weather Statement	PUB	Crowley, Las Animas, Otero	49 min
May 17, 6:57 PM MDT	Special Weather Statement	PUB	Teller	48 min
May 17, 7:06 PM MDT	Severe Thunderstorm Warning	PUB	Baca, Las Animas	69 min
May 17, 7:43 PM MDT	Special Weather Statement	PUB	Bent, Crowley, Otero	47 min
May 17, 8:14 PM MDT	Special Weather Statement	PUB	Bent, Prowers	46 min
May 17, 8:29 PM MDT	Special Weather Statement	PUB	Otero	46 min
May 17, 8:41 PM MDT	Special Weather Statement	PUB	Bent	19 min
May 17, 9:00 PM MDT	Special Weather Statement	PUB	Bent, Prowers	45 min
May 17, 9:43 PM MDT	Special Weather Statement	PUB	Bent, Crowley, Kiowa, Prowers	47 min
May 18, 9:06 AM MDT	Winter Weather Advisory	PUB	Alamosa, Chaffee, Costilla, Custer, Fremont, Huerfano and 3 more	6 hr
May 18, 12:29 PM MDT	Special Weather Statement	PUB	Baca	31 min
May 18, 12:46 PM MDT	Areal Flood Warning	PUB	Custer, Pueblo	7 hr
May 18, 12:46 PM MDT	Special Weather Statement	PUB	Baca	29 min
May 18, 1:41 PM MDT	Special Weather Statement	PUB	Baca, Bent, Otero, Prowers	49 min
May 18, 2:49 PM MDT	Special Weather Statement	PUB	Otero	26 min
May 18, 3:48 PM MDT	Special Weather Statement	PUB	Kiowa	42 min
May 18, 4:08 PM MDT	Special Weather Statement	PUB	Kiowa	37 min
May 18, 4:41 PM MDT	Special Weather Statement	PUB	El Paso	49 min
May 18, 4:44 PM MDT	Special Weather Statement	PUB	Pueblo	31 min
May 18, 5:39 PM MDT	Special Weather Statement	PUB	Fremont	51 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.