Alert archive / Colorado / Flash Flood Warnings in 2005

Flash Flood Warning 8, NWS Pueblo, CO

July 26, 2005Custer County, Pueblo County, Colorado

NWS Pueblo, CO issued this flash flood warning at Jul 26, 2005, 4:24 PM MDT for Custer County, Pueblo 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 26, 2005, 4:24 PM MDT (22:24 UTC)
Expired
Jul 26, 2005, 7:30 PM MDT
In force
3 hr
Issued by
NWS Pueblo, CO
Area
Counties, with a storm outline in the text

Counties Custer County, CO, Pueblo County, CO

The radar

The Pueblo radar (KPUX), 83 km from the middle of the area, began a volume at 22:25 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, 10.4 hours before the alert went out and 250 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 12:00Z on 2005-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 82 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 12:00Z on 2005-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.19395878Sfc1 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
82 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
540 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
42 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS55 KPUB 262226
FFWPUB
COC027-101-270130-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PUEBLO CO
424 PM MDT TUE JUL 26 2005

THE NATIONAL WEATHER SERVICE IN PUEBLO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL CUSTER COUNTY IN SOUTHEAST COLORADO.
  WEST CENTRAL PUEBLO COUNTY IN SOUTHEAST COLORADO.

* UNTIL 730 PM MDT.

* AT 420 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED VERY
  HEAVY RAIN FROM A THUNDERSTORM NEAR BEULAH...OR ABOUT 27 MILES
  SOUTHWEST OF PUEBLO...MOVING SOUTH AT 10 MPH.

* THE THUNDERSTORM PRODUCING VERY HEAVY RAIN WILL BE OVER...
  THE MASON GULCH BURN SCAR THROUGH 5 PM.

DOPPLER RADAR ESTIMATES THAT RAIN TOTALS OF ONE QUARTER TO ONE HALF 
OF AN INCH HAS FALLEN OVER THE BURN SCAR. ADDITIONAL HEAVY RAIN OF 
0NE HALF TO ONE INCH IS POSSIBLE.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.

IF YOU ARE IN OR CLOSE TO THE WARNED AREA GO TO HIGHER GROUND
IMMEDIATELY. PEOPLE ALONG CREEKS AND DRAINAGE AREAS SHOULD TAKE
IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO
CROSS SWIFTLY FLOWING WATER OR STILL WATER OF UNKNOWN DEPTH ON FOOT
OR BY VEHICLE. AS LITTLE AS 6 INCHES OF WATER MAY CAUSE YOU TO LOSE
CONTROL OF YOUR VEHICLE...AND 2 FEET OF RUSHING WATER CAN CARRY AWAY
MOST VEHICLES...INCLUDING SUVS AND PICKUPS. NEARLY HALF OF ALL FLOOD
FATALITIES ARE VEHICLE RELATED. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN
IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING.

LAT...LON 3823 10500 3819 10521 3789 10501 3796 10483

$$
3 follow-up statements
000 
WGUS75 KPUB 262247
FFSPUB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
444 PM MDT TUE JUL 26 2005

COC027-101-270130-
CUSTER CO-PUEBLO CO-
444 PM MDT TUE JUL 26 2005

...THE FLASH FLOOD WARNING REMAINS IN EFFECT FOR WEST CENTRAL PUEBLO
AND EAST CENTRAL CUSTER COUNTIES UNTIL 730 PM MDT...

AT 442 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
RAINFALL AMOUNTS OF UP TO ONE HALF OF AN INCH HAS FALLEN ON THE 
SOUTHERN PART OF THE MASON GULCH BURN SCAR. THE NORTHERN PART OF THE 
BURN SCAR HAS SEEN LESS THAN ONE TENTH OF AN INCH OF RAIN.

RADAR SHOWS AN ADDITIONAL THUNDERSTORM TO THE NORTH OF THE BURN SCAR 
WHICH IS MOVING SOUTH...BUT THIS STORM WAS WEAKENING BETWEEN 437 AND 
442 PM. 

JUST A SMALL AMOUNT OF RAINFALL ON A BURN SCAR CAN LEAD TO FLASH
FLOODING. WATER THAT IS NORMALLY ABSORBED BY VEGETATION...RUNS OFF
ALMOST INSTANTLY. THIS CAUSES CREEKS AND DRAINAGE AREAS TO FLOOD AT A
MUCH FASTER RATE THAN NORMAL. ADDITIONALLY...THE SOILS IN A BURN SCAR
BECOME VERY UNSTABLE WHEN IT RAINS...SOMETIMES CREATING ROCK SLIDES
AND MUDFLOWS. ROADWAYS CAN BE WASHED OUT BY THE FORCE OF THE RUSHING
WATER.

LAT...LON 3823 10500 3819 10521 3789 10501 3796 10483

$$

HODANISH
000 
WGUS75 KPUB 262300
FFSPUB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
456 PM MDT TUE JUL 26 2005

COC027-101-270130-
CUSTER CO-PUEBLO CO-
500 PM MDT TUE JUL 26 2005

...THE FLASH FLOOD WARNING REMAINS IN EFFECT FOR WEST CENTRAL PUEBLO
AND EAST CENTRAL CUSTER COUNTIES UNTIL 730 PM MDT...

AT 451 PM MDT...NO RAIN WAS FALLING OVER THE MASON BURN SCAR AREA. 
NO RAINFALL IS EXPECTED OVER THE BURN SCAR AREA DURING THE REST OF 
THE EVENING. RADAR INDICATED UP TO ONE HALF OF AN INCH HAS FALLEN 
OVER THE BURN SCAR AREA BETWEEN 4 AND 430 PM. IF FLOODING IS 
OCCURRING IN THE BURN SCAR AREA...IT WILL OCCUR OVER THE SOUTHERN 
SECTIONS OF THE BURN SCAR.

IF NO NEW RAINFALL REDEVELOPS OVER THE BURN SCAR...THE FLASH FLOOD 
WARNING WILL BE CANCELED BEFORE 730 PM.

JUST A SMALL AMOUNT OF RAINFALL ON A BURN SCAR CAN LEAD TO FLASH 
FLOODING. WATER THAT IS NORMALLY ABSORBED BY VEGETATION...RUNS OFF 
ALMOST INSTANTLY. THIS CAUSES CREEKS AND DRAINAGE AREAS TO FLOOD AT A
MUCH FASTER RATE THAN NORMAL. ADDITIONALLY...THE SOILS IN A BURN SCAR
BECOME VERY UNSTABLE WHEN IT RAINS...SOMETIMES CREATING ROCK SLIDES 
AND MUDFLOWS. ROADWAYS CAN BE WASHED OUT BY THE FORCE OF THE RUSHING 
WATER.

LAT...LON 3823 10500 3819 10521 3789 10501 3796 10483

$$

HODANISH
000 
WGUS75 KPUB 262335
FFSPUB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
533 PM MDT TUE JUL 26 2005

COC027-101-262343-
CUSTER CO-PUEBLO CO-
533 PM MDT TUE JUL 26 2005

...THE FLASH FLOOD WARNING FOR WEST CENTRAL PUEBLO AND EAST CENTRAL
CUSTER COUNTIES HAS BEEN CANCELED...

HEAVY RAIN AND FLASH FLOODING ARE NO LONGER OCCURRING IN THIS AREA.

LAT...LON 3823 10500 3819 10521 3789 10501 3796 10483

$$

HODANISH

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 26, 3:36 PM MDTSevere Thunderstorm WarningPUBPueblo54 min
Jul 26, 4:30 PM MDTSevere Thunderstorm WarningPUBPueblo25 min
Jul 26, 5:17 PM MDTSevere Thunderstorm WarningPUBFremont45 min
Jul 26, 5:45 PM MDTSevere Thunderstorm WarningPUBHuerfano, Las Animas60 min

Nearby

Flash Flood Warnings in Colorado, 2005Every flash flood warning in 2005

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.