Alert archive / Colorado / Flash Flood Warnings in 2020

Flash Flood Warning 60, NWS Pueblo, CO

August 15, 2020Huerfano County, Colorado

NWS Pueblo, CO issued this flash flood warning at Aug 15, 2020, 2:44 PM MDT for Huerfano County, Colorado. It was in force for 102 min. 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
Aug 15, 2020, 2:44 PM MDT (20:44 UTC)
Expired
Aug 15, 2020, 4:26 PM MDT
In force
102 min
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), 140 km from the middle of the area, began a volume at 20:45 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

TimeReportWhereRemark
Aug 15, 3:30 PM MDTFLASH FLOOD3 Ne Cuchara, COHWY 12 WAS TEMPORARILY CLOSED FOR A FLASH FLOOD AND MINOR DEBRIS FLOW OFF THE SPRING BURN SCAR.

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

The nearest sounding before it

Albuquerq/Krtlnd, NM (KABQ), launched 12:00Z, 8.7 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-pSkew-T log-p diagram, Albuquerq/Krtlnd, NM at 12:00Z on 2020-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 140 joules per kilogram.LCLLFCEL10008507005003002001001 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, Albuquerq/Krtlnd, NM at 12:00Z on 2020-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 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
140 J/kg
Mixed-layer CIN
-342 J/kg
Mixed-layer LCL
2916 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

444 
WGUS55 KPUB 152044
FFWPUB
COC055-152345-
/O.NEW.KPUB.FF.W.0060.200815T2044Z-200815T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
244 PM MDT Sat Aug 15 2020

The National Weather Service in Pueblo has issued a

* Flash Flood Warning for...
  South central Huerfano County in southeastern Colorado...

* Until 545 PM MDT.

* At 243 PM MDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Around three tenths 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...
  Indian Creek on the southeastern Spring Burn Scar, southeastern
  Spring Burn Scar south of Highway 160 in Huerfano county and
  Cuchara.

Excessive rainfall over the burn scar may result in debris flow 
moving through the Indian Creek and Riling Creek drainages. The 
debris flow can consist of rock, mud, vegetation and other loose 
materials.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 3742 10514 3743 10514 3748 10503 3739 10496
      3738 10510

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

$$

Heavener
1 follow-up statement
571 
WGUS75 KPUB 152226
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
426 PM MDT Sat Aug 15 2020

COC055-152235-
/O.CAN.KPUB.FF.W.0060.000000T0000Z-200815T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Huerfano CO-
426 PM MDT Sat Aug 15 2020

...THE FLASH FLOOD WARNING FOR SOUTH 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 3742 10514 3743 10514 3748 10503 3739 10496
      3738 10510

$$

KT

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 15, 12:26 PM MDTSpecial Weather StatementPUBHuerfano34 min
Aug 15, 2:46 PM MDTSpecial Weather StatementPUB29 min
Aug 15, 2:54 PM MDTSpecial Weather StatementPUBLas Animas36 min
Aug 15, 3:11 PM MDTSpecial Weather StatementPUBHuerfano34 min
Aug 15, 3:26 PM MDTSevere Thunderstorm WarningPUBLas Animas19 min
Aug 15, 3:34 PM MDTSpecial Weather StatementPUBEl Paso41 min
Aug 15, 3:39 PM MDTSpecial Weather StatementPUBLas Animas36 min
Aug 15, 3:43 PM MDTSevere Thunderstorm WarningPUBEl Paso47 min
Aug 15, 3:48 PM MDTSpecial Weather StatementPUBHuerfano27 min
Aug 15, 4:00 PM MDTSpecial Weather StatementPUBLas Animas30 min
Aug 15, 4:12 PM MDTSevere Thunderstorm WarningPUBEl Paso31 min
Aug 15, 4:22 PM MDTSpecial Weather StatementPUBEl Paso38 min
Aug 15, 4:25 PM MDTSpecial Weather StatementPUBLas Animas35 min
Aug 15, 4:29 PM MDTSpecial Weather StatementPUBLas Animas46 min
Aug 15, 4:31 PM MDTSpecial Weather StatementPUBTeller29 min
Aug 15, 4:38 PM MDTSpecial Weather StatementPUB37 min
Aug 15, 4:39 PM MDTSevere Thunderstorm WarningPUBEl Paso51 min
Aug 15, 4:49 PM MDTSevere Thunderstorm WarningPUBEl Paso26 min
Aug 15, 5:11 PM MDTSevere Thunderstorm WarningPUBEl Paso14 min
Aug 15, 5:25 PM MDTSpecial Weather StatementPUBFremont50 min

Nearby

Flash Flood Warnings in Colorado, 2020Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.