Alert archive / Colorado / Flash Flood Warnings in 2021

Flash Flood Warning 24, NWS Pueblo, CO

July 1, 2021Chaffee County, Fremont County, Colorado

NWS Pueblo, CO issued this flash flood warning at Jul 1, 2021, 5:19 PM MDT for Chaffee County, Fremont 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: Jul 1, 2021, 5:19 PM MDT (23:19 UTC)
Expired: Jul 1, 2021, 8:30 PM MDT
In force: 3 hr
Issued by: NWS Pueblo, CO
Area: Storm-based polygon
Flood severity: None

Counties Chaffee County, CO, Fremont County, CO

The radar

The Pueblo radar (KPUX), 154 km from the middle of the area, began a volume at 23:18 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, 11.3 hours before the alert went out and 229 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: 22 J/kg
Mixed-layer CIN: -181 J/kg
Mixed-layer LCL: 2136 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 52 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

132 
WGUS55 KPUB 012319
FFWPUB
COC015-043-020230-
/O.NEW.KPUB.FF.W.0024.210701T2319Z-210702T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
519 PM MDT Thu Jul 1 2021

The National Weather Service in Pueblo has issued a

* Flash Flood Warning for...
  East Central Chaffee County in central Colorado...
  Northwestern Fremont County in central Colorado...

* Until 830 PM MDT.

* At 519 PM MDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have 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...
  mainly rural areas of East Central Chaffee and Northwestern 
  Fremont Counties

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3869 10600 3867 10580 3851 10583 3856 10601
      3856 10600

FLASH FLOOD...RADAR INDICATED

$$

Hodanish

2 follow-up statements

628 
WGUS75 KPUB 020100
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
700 PM MDT Thu Jul 1 2021

COC015-043-020230-
/O.CON.KPUB.FF.W.0024.000000T0000Z-210702T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Chaffee CO-Fremont CO-
700 PM MDT Thu Jul 1 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM MDT THIS 
EVENING FOR EAST CENTRAL CHAFFEE AND NORTHWESTERN FREMONT COUNTIES...

At 700 PM MDT, Doppler radar indicated showers and thunderstorms 
still affecting the region. The activity was moving to the east at 
20 mph.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

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

Some locations that will experience flash flooding include...
  mainly rural areas of East Central Chaffee and Northwestern 
  Fremont Counties

an additional 0.2 to 0.4 inches of rain will be possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3869 10600 3867 10580 3851 10583 3856 10601
      3856 10600

FLASH FLOOD...RADAR INDICATED

$$

Hodanish

034 
WGUS75 KPUB 020238
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
838 PM MDT Thu Jul 1 2021

COC015-043-020248-
/O.EXP.KPUB.FF.W.0024.000000T0000Z-210702T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Chaffee CO-Fremont CO-
838 PM MDT Thu Jul 1 2021

...FLASH FLOOD WARNING HAS EXPIRED FOR EAST CENTRAL CHAFFEE AND 
NORTHWESTERN FREMONT COUNTIES...

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

A Flash Flood Watch remains in effect until 1200 AM MDT for portions 
of central Colorado, east central Colorado and southeast Colorado.

LAT...LON 3869 10600 3867 10580 3851 10583 3856 10601
      3856 10600

$$

Hodanish

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 1:27 PM MDT	Flash Flood Warning Considerable damage threat	PUB	Huerfano	2 hr
Jul 1, 1:59 PM MDT	Special Weather Statement	PUB	El Paso	31 min
Jul 1, 2:11 PM MDT	Special Weather Statement	PUB	El Paso	34 min
Jul 1, 2:33 PM MDT	Severe Thunderstorm Warning	PUB	El Paso	18 min
Jul 1, 2:34 PM MDT	Severe Thunderstorm Warning	PUB	El Paso	41 min
Jul 1, 2:36 PM MDT	Special Weather Statement	PUB	El Paso	39 min
Jul 1, 2:42 PM MDT	Severe Thunderstorm Warning	PUB	El Paso, Pueblo	33 min
Jul 1, 3:12 PM MDT	Special Weather Statement	PUB	El Paso	33 min
Jul 1, 3:15 PM MDT	Special Weather Statement	PUB	Teller	45 min
Jul 1, 3:18 PM MDT	Special Weather Statement	PUB	El Paso	42 min
Jul 1, 3:32 PM MDT	Special Weather Statement	PUB	Pueblo	43 min
Jul 1, 3:47 PM MDT	Severe Thunderstorm Warning	PUB	Pueblo	28 min
Jul 1, 4:03 PM MDT	Special Weather Statement	PUB	El Paso	42 min
Jul 1, 4:09 PM MDT	Severe Thunderstorm Warning	PUB	Pueblo	36 min
Jul 1, 4:30 PM MDT	Severe Thunderstorm Warning	PUB	Pueblo	30 min
Jul 1, 4:44 PM MDT	Tornado Warning	PUB	Crowley, Pueblo	23 min
Jul 1, 4:47 PM MDT	Special Weather Statement	PUB	Chaffee	43 min
Jul 1, 5:01 PM MDT	Special Weather Statement	PUB	Pueblo	44 min
Jul 1, 5:06 PM MDT	Severe Thunderstorm Warning	PUB	Crowley, Otero, Pueblo	27 min
Jul 1, 5:15 PM MDT	Special Weather Statement	PUB	Otero	45 min
Jul 1, 5:16 PM MDT	Special Weather Statement	PUB	Pueblo	44 min
Jul 1, 5:35 PM MDT	Severe Thunderstorm Warning	PUB	Bent, Las Animas, Otero	40 min
Jul 1, 5:38 PM MDT	Severe Thunderstorm Warning	PUB	Pueblo	38 min
Jul 1, 5:44 PM MDT	Flash Flood Warning	PUB	Pueblo	3 hr

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.