Alert archive / Colorado / Flash Flood Warnings in 2022

Flash Flood Warning 49, NWS Pueblo, CO

August 3, 2022Custer County, Colorado

NWS Pueblo, CO issued this flash flood warning at Aug 3, 2022, 2:31 PM MDT for Custer 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: Aug 3, 2022, 2:31 PM MDT (20:31 UTC)
Expired: Aug 3, 2022, 5:30 PM MDT
In force: 3 hr
Issued by: NWS Pueblo, CO
Area: Storm-based polygon
Flood severity: None

County Custer County, CO

The radar

The Pueblo radar (KPUX), 97 km from the middle of the area, began a volume at 20:31 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 12:00Z, 8.5 hours before the alert went out and 307 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: 29 J/kg
Mixed-layer CIN: -130 J/kg
Mixed-layer LCL: 1928 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: -43 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

954 
WGUS55 KPUB 032031
FFWPUB
COC027-032330-
/O.NEW.KPUB.FF.W.0049.220803T2031Z-220803T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
Issued by National Weather Service Denver CO
231 PM MDT Wed Aug 3 2022

The National Weather Service in Pueblo has issued a

* Flash Flood Warning for...
  East Central Custer County in southeastern Colorado...

* Until 530 PM MDT.

* At 231 PM MDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the southwest portions of the Junkins burn scar. 
  Up to 1.25 inches of rain has fallen. Flash flooding is ongoing or 
  expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

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

This includes the following streams and drainages...
  Bishop Creek, Junkins Park Creek, Middle Hardscrabble Creek, North 
  Hardscrabble Creek, South Hardscrabble Creek, South Fork North 
  Hardscrabble Creek and Little Froze 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 3815 10521 3815 10516 3809 10515 3809 10520
      3811 10526 3813 10524

FLASH FLOOD...RADAR INDICATED

$$

rpk

2 follow-up statements

515 
WGUS75 KPUB 032132
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
Issued by National Weather Service Denver CO
332 PM MDT Wed Aug 3 2022

COC027-032330-
/O.CON.KPUB.FF.W.0049.000000T0000Z-220803T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Custer CO-
332 PM MDT Wed Aug 3 2022

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 530 PM MDT THIS 
AFTERNOON FOR EAST CENTRAL CUSTER COUNTY...

At 332 PM MDT, Doppler radar indicated thunderstorms producing heavy 
rain across the southwest portions of the Junkins burn scar. Up to 
1.50 inches of rain has fallen. Flash flooding is ongoing or 
expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

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

This includes the following streams and drainages...
  Bishop Creek, Junkins Park Creek, Middle Hardscrabble Creek, North 
  Hardscrabble Creek, South Hardscrabble Creek, South Fork North 
  Hardscrabble Creek and Little Froze 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 3815 10521 3815 10516 3809 10515 3809 10520
      3811 10526 3813 10524

FLASH FLOOD...RADAR INDICATED

$$

rpk

720 
WGUS75 KPUB 032325
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
Issued by National Weather Service Denver CO
525 PM MDT Wed Aug 3 2022

COC027-032335-
/O.EXP.KPUB.FF.W.0049.000000T0000Z-220803T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Custer CO-
525 PM MDT Wed Aug 3 2022

...FLASH FLOOD WARNING WILL EXPIRE AT 530 PM MDT THIS AFTERNOON FOR 
EAST CENTRAL CUSTER COUNTY...

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

LAT...LON 3815 10521 3815 10516 3809 10515 3809 10520
      3811 10526 3813 10524

$$

rpk

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 1:41 PM MDT	Special Weather Statement	PUB	Costilla	34 min
Aug 3, 3:03 PM MDT	Special Weather Statement	PUB	Fremont	27 min
Aug 3, 3:35 PM MDT	Flash Flood Warning	PUB	Fremont	3 hr
Aug 3, 4:01 PM MDT	Special Weather Statement	PUB	Fremont	29 min
Aug 3, 4:15 PM MDT	Special Weather Statement	PUB	Custer	45 min
Aug 3, 4:18 PM MDT	Flash Flood Warning Considerable damage threat	PUB	Fremont	3 hr
Aug 3, 4:21 PM MDT	Special Weather Statement	PUB	Hinsdale	24 min
Aug 3, 4:34 PM MDT	Special Weather Statement	PUB	Fremont	41 min
Aug 3, 5:02 PM MDT	Special Weather Statement	PUB	Huerfano	43 min
Aug 3, 5:21 PM MDT	Flash Flood Warning	PUB	Chaffee, Saguache	3 hr
Aug 3, 5:32 PM MDT	Flash Flood Warning	PUB	Huerfano	3 hr
Aug 3, 5:45 PM MDT	Flash Flood Warning Considerable damage threat	PUB	Costilla, Huerfano	3 hr

Nearby

Flash Flood Warnings in Colorado, 2022 Every flash flood warning in 2022

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.