Alert archive / Colorado / Flash Flood Warnings in 2021

Flash Flood Warning 48, NWS Pueblo, CO

July 6, 20214 counties in Colorado

NWS Pueblo, CO issued this flash flood warning at Jul 6, 2021, 9:34 PM MDT for 4 counties in 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: Jul 6, 2021, 9:34 PM MDT (03:34 UTC)
Expired: Jul 7, 2021, 12:45 AM MDT
In force: 3 hr
Issued by: NWS Pueblo, CO
Area: Storm-based polygon
Flood severity: None

Counties El Paso County, CO, Fremont County, CO, Pueblo County, CO, Teller County, CO

The radar

The Pueblo radar (KPUX), 66 km from the middle of the area, began a volume at 03:35 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 00:00Z, 3.6 hours before the alert went out and 205 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: 117 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 2096 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -30 m²/s²
0-3 km storm-relative helicity: 65 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

As transmitted.

783 
WGUS55 KPUB 070334
FFWPUB
COC041-043-101-119-070645-
/O.NEW.KPUB.FF.W.0048.210707T0334Z-210707T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
934 PM MDT Tue Jul 6 2021

The National Weather Service in Pueblo has issued a

* Flash Flood Warning for...
  East Central Fremont County in central Colorado...
  Southeastern Teller County in central Colorado...
  Southwestern El Paso County in east central Colorado...
  Northwestern Pueblo County in southeastern Colorado...

* Until 1245 AM MDT.

* At 934 PM MDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 3 inches of rain 
  have fallen. The expected rainfall rate is 1.5 to 2 inches in 1 
  hour. 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...
  mainly rural areas of East Central Fremont, Southeastern Teller, 
  Southwestern El Paso and Northwestern Pueblo Counties

This is impacting Colorado Highway 115 from Penrose to Colorado 
Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3867 10499 3867 10487 3849 10485 3849 10486
      3847 10498

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1.5-2 INCHES IN 1 HOUR

$$

MG/KM

1 follow-up statement

609 
WGUS75 KPUB 070642
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
1242 AM MDT Wed Jul 7 2021

COC041-043-101-119-070652-
/O.EXP.KPUB.FF.W.0048.000000T0000Z-210707T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
El Paso CO-Fremont CO-Pueblo CO-Teller CO-
1242 AM MDT Wed Jul 7 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 1245 AM MDT EARLY THIS MORNING 
FOR EAST CENTRAL FREMONT, SOUTHEASTERN TELLER, SOUTHWESTERN EL PASO 
AND NORTHWESTERN PUEBLO COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
significant threat. Please continue to heed remaining road closures, 
and avoid areas of lingering water on roadways from earlier rainfall.

LAT...LON 3867 10499 3867 10487 3849 10485 3849 10486
      3848 10494 3847 10498

$$

Cohen

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 6:13 PM MDT	Special Weather Statement	PUB	Pueblo	47 min
Jul 6, 7:59 PM MDT	Special Weather Statement	PUB	Pueblo	31 min
Jul 6, 8:43 PM MDT	Flash Flood Warning	PUB	Pueblo	101 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.