Alert archive / Colorado / Flash Flood Warnings in 2020

Flash Flood Warning 13, NWS Pueblo, CO

June 24, 2020Huerfano County, Colorado

NWS Pueblo, CO issued this flash flood warning at Jun 24, 2020, 5:29 PM MDT for Huerfano 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: Jun 24, 2020, 5:29 PM MDT (23:29 UTC)
Expired: Jun 24, 2020, 8:02 PM MDT
In force: 3 hr
Issued by: NWS Pueblo, CO
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

County Huerfano County, CO

The radar

The Pueblo radar (KPUX), 121 km from the middle of the area, began a volume at 23:28 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, 11.5 hours before the alert went out and 296 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: 2367 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

072 
WGUS55 KPUB 242329
FFWPUB
COC055-250230-
/O.NEW.KPUB.FF.W.0013.200624T2329Z-200625T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
529 PM MDT Wed Jun 24 2020

The National Weather Service in Pueblo has issued a

* Flash Flood Warning for...
  Central Huerfano County in southeastern Colorado...

* Until 830 PM MDT.

* At 528 PM MDT, Doppler radar indicated thunderstorms producing
  heavy rain over Spring Burn Scar north of Highway 160. The storm is
  nearly stationary. Around one half inch of rain has already fallen.
  Flash flooding is ongoing or expected to begin shortly.

  HAZARD...Life threatening flash flooding. Heavy rain producing 
           flash flooding.

  SOURCE...Radar indicated.

  IMPACT...Life threatening flash flooding of creeks and streams, 
           urban areas, highways, streets and underpasses.

* Some locations that will experience flooding include...
  Spring Burn Scar north of Highway 160.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for flooding even in locations not receiving rain.
Arroyos, streams, and rivers can become raging killer currents in a
matter of minutes, even from distant rainfall.

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 3770 10505 3766 10498 3760 10499 3756 10504
      3756 10512 3758 10516 3761 10518 3768 10511

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...0.30-0.50 INCHES IN 1 HOUR

$$

MOORE

2 follow-up statements

504 
WGUS75 KPUB 250034
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
634 PM MDT Wed Jun 24 2020

COC055-250230-
/O.CON.KPUB.FF.W.0013.000000T0000Z-200625T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Huerfano CO-
634 PM MDT Wed Jun 24 2020

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM MDT FOR
CENTRAL HUERFANO COUNTY...

At 632 PM MDT, Doppler radar indicated thunderstorms producing 
moderate rain in the vicinity of the warned area. Around one half 
inch of rain has already fallen.  Flash flooding is ongoing or 
expected to begin shortly.

HAZARD...Life threatening flash flooding. Heavy rain producing flash 
         flooding.

SOURCE...Radar indicated.

IMPACT...Life threatening flash flooding of creeks and streams, 
         urban areas, highways, streets and underpasses.

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

Some locations that will experience flooding include...
Spring Burn Scar north of Highway 160.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for flooding even in locations not receiving rain.
Arroyos, streams, and rivers can become raging killer currents in a
matter of minutes, even from distant rainfall.

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 3770 10505 3766 10498 3760 10499 3756 10504
      3756 10512 3758 10516 3761 10518 3768 10511

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...0.30-0.50 INCHES IN 1 HOUR

$$

MOORE

802 
WGUS75 KPUB 250202
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
802 PM MDT Wed Jun 24 2020

COC055-250212-
/O.CAN.KPUB.FF.W.0013.000000T0000Z-200625T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Huerfano CO-
802 PM MDT Wed Jun 24 2020

...THE FLASH FLOOD WARNING FOR CENTRAL HUERFANO COUNTY IS
CANCELLED...

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

LAT...LON 3770 10505 3766 10498 3760 10499 3756 10504
      3756 10512 3758 10516 3761 10518 3768 10511

$$

MOORE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 6:00 PM MDT	Severe Thunderstorm Warning	PUB	Bent, Kiowa	60 min
Jun 23, 6:25 PM MDT	Special Weather Statement	PUB	Alamosa	50 min
Jun 23, 6:28 PM MDT	Severe Thunderstorm Warning	PUB	Bent, Prowers	47 min
Jun 23, 7:08 PM MDT	Special Weather Statement	PUB	Teller	52 min
Jun 23, 7:10 PM MDT	Special Weather Statement	PUB	Alamosa	50 min
Jun 23, 7:57 PM MDT	Severe Thunderstorm Warning	PUB	Baca, Prowers	33 min
Jun 24, 1:20 PM MDT	Special Weather Statement	PUB	Las Animas	40 min
Jun 24, 2:27 PM MDT	Flash Flood Warning Considerable damage threat	PUB	Huerfano	3 hr
Jun 24, 3:34 PM MDT	Special Weather Statement	PUB	Costilla	41 min
Jun 24, 4:15 PM MDT	Special Weather Statement	PUB	Saguache	45 min
Jun 24, 4:46 PM MDT	Special Weather Statement	PUB	Otero	44 min

Nearby

Flash Flood Warnings in Colorado, 2020 Every flash flood warning in 2020

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.