Alert archive / Colorado / Flash Flood Warnings in 2021

Flash Flood Warning 75, NWS Pueblo, CO

July 23, 2021Fremont County, Colorado

NWS Pueblo, CO issued this flash flood warning at Jul 23, 2021, 7:29 PM MDT for Fremont County, Colorado. It was in force for 117 min. 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 23, 2021, 7:29 PM MDT (01:29 UTC)
Expired
Jul 23, 2021, 9:26 PM MDT
In force
117 min
Issued by
NWS Pueblo, CO
Area
Storm-based polygon
Flood severity
None

County Fremont County, CO

The radar

The Pueblo radar (KPUX), 101 km from the middle of the area, began a volume at 01:30 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, 1.5 hours before the alert went out and 238 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, Denver, CO at 00:00Z on 2021-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 11 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, Denver, CO at 00:00Z on 2021-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 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
11 J/kg
Mixed-layer CIN
-200 J/kg
Mixed-layer LCL
2118 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
199 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

592 
WGUS55 KPUB 240129
FFWPUB
COC043-240430-
/O.NEW.KPUB.FF.W.0075.210724T0129Z-210724T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
729 PM MDT Fri Jul 23 2021

The National Weather Service in Pueblo has issued a

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

* Until 1030 PM MDT.

* At 729 PM MDT, Doppler radar indicated thunderstorms producing 
  heavy rain in Central Fremont County. Between 1 and 2 inches of 
  rain have fallen. The expected rainfall rate is 1 to 3 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...
  Florence, Royal Gorge and Canon City and locations along the 
  Arkansas River to the west of Royal Gorge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3861 10522 3849 10518 3843 10507 3834 10506
      3829 10516 3828 10523 3832 10530 3836 10535
      3838 10541 3841 10547 3844 10556 3851 10555
      3857 10555 3862 10555 3868 10557 3868 10538
      3865 10526

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-3 INCHES IN 1 HOUR

$$

KT
2 follow-up statements
618 
WGUS75 KPUB 240205
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
805 PM MDT Fri Jul 23 2021

COC043-240430-
/O.CON.KPUB.FF.W.0075.000000T0000Z-210724T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fremont CO-
805 PM MDT Fri Jul 23 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM MDT THIS 
EVENING FOR CENTRAL FREMONT COUNTY...

At 805 PM MDT, Doppler radar indicated thunderstorms producing heavy 
rain in Central Fremont County. Up to 2 inches of rain have fallen 
with the heaviest amounts having fallen in the Royal Gorge and 
Florence areas. Additional heavy rain was falling just west of Royal 
Gorge and southwest of Florence. The expected rainfall rate is 1.5 
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...
  Florence, Royal Gorge and Canon City.

Rock slides could occur in steeper terrain and county roads with low 
water crossings could become flooded.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3861 10522 3849 10518 3843 10507 3834 10506
      3829 10516 3828 10523 3832 10530 3836 10535
      3838 10541 3841 10547 3844 10556 3851 10555
      3857 10555 3862 10555 3868 10557 3868 10538
      3865 10526

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

$$

KT
546 
WGUS75 KPUB 240326
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
926 PM MDT Fri Jul 23 2021

COC043-240336-
/O.CAN.KPUB.FF.W.0075.000000T0000Z-210724T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fremont CO-
926 PM MDT Fri Jul 23 2021

...FLASH FLOOD WARNING IS CANCELLED FOR CENTRAL FREMONT COUNTY...

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.

LAT...LON 3861 10522 3849 10518 3843 10507 3834 10506
      3829 10516 3828 10523 3832 10530 3836 10535
      3838 10541 3841 10547 3844 10556 3851 10555
      3857 10555 3862 10555 3868 10557 3868 10538
      3865 10526

$$

KT

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 6:13 PM MDTSpecial Weather StatementPUBEl Paso32 min
Jul 23, 6:14 PM MDTSpecial Weather StatementPUBEl Paso46 min
Jul 23, 6:31 PM MDTSpecial Weather StatementPUBChaffee44 min
Jul 23, 6:43 PM MDTSpecial Weather StatementPUBMineral62 min
Jul 23, 6:58 PM MDTFlash Flood WarningPUBEl Paso, Teller2 hr
Jul 23, 7:03 PM MDTFlash Flood Warning Considerable damage threatPUBChaffee, Fremont, Saguache3 hr
Jul 23, 7:14 PM MDTFlash Flood Warning Considerable damage threatPUBChaffee3 hr
Jul 23, 7:15 PM MDTSpecial Weather StatementPUBFremont60 min
Jul 23, 7:26 PM MDTFlash Flood WarningPUBChaffee, Fremont3 hr
Jul 23, 7:38 PM MDTFlash Flood Warning Considerable damage threatPUBChaffee, Saguache2 hr
Jul 23, 7:46 PM MDTFlash Flood Warning Considerable damage threatPUBFremont, Saguache2 hr
Jul 23, 7:49 PM MDTFlash Flood Warning Considerable damage threatPUBFremont, Saguache2 hr
Jul 24, 3:43 AM MDTFlood WatchPUBAlamosa, Chaffee, Conejos, Costilla, Custer, Fremont and 5 more5 min
Jul 24, 3:53 AM MDTFlash Flood WatchPUBAlamosa, Chaffee, Conejos, Costilla, Custer, Fremont and 7 more17 hr
Jul 24, 1:26 PM MDTSpecial Weather StatementPUBPueblo49 min
Jul 24, 1:39 PM MDTFlash Flood WarningPUBPueblo6 hr
Jul 24, 2:51 PM MDTSpecial Weather StatementPUBFremont39 min
Jul 24, 3:28 PM MDTSpecial Weather StatementPUBPueblo47 min
Jul 24, 4:01 PM MDTFlash Flood WarningPUBPueblo3 hr
Jul 24, 4:43 PM MDTSpecial Weather StatementPUBCuster62 min
Jul 24, 4:57 PM MDTSpecial Weather StatementPUBSaguache48 min
Jul 24, 5:05 PM MDTSpecial Weather StatementPUBPueblo40 min
Jul 24, 5:17 PM MDTFlash Flood WarningPUBCuster, Saguache3 hr

Nearby

Flash Flood Warnings in Colorado, 2021Every 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.