Alert archive / Colorado / Flash Flood Warnings in 2007

Flash Flood Warning 28, NWS Pueblo, CO

August 2, 2007Chaffee County, Colorado

NWS Pueblo, CO issued this flash flood warning at Aug 2, 2007, 11:22 PM MDT for Chaffee County, Colorado. It took effect at Aug 2, 2007, 11:31 PM MDT. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 2, 2007, 11:22 PM MDT (05:22 UTC)
In effect from
Aug 2, 2007, 11:31 PM MDT
Expired
Aug 3, 2007, 1:45 AM MDT
In force
2 hr
Issued by
NWS Pueblo, CO
Area
Whole counties

County Chaffee County, CO

The radar

The Pueblo radar (KPUX), 178 km from the middle of the area, began a volume at 05:22 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 00:00Z, 5.4 hours before the alert went out and 204 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, Grand Junction, CO at 00:00Z on 2007-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Grand Junction, CO at 00:00Z on 2007-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2800 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
62 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS55 KPUB 030531
FFWPUB
COC015-030745-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PUEBLO CO
1122 PM MDT THU AUG 2 2007

THE NATIONAL WEATHER SERVICE IN PUEBLO HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  CENTRAL CHAFFEE COUNTY IN CENTRAL COLORADO...

* UNTIL 145 AM MDT...

* AT 1118 PM MDT...TRAINED WEATHER SPOTTERS REPORTED FLASH FLOODING
  FROM A STORM THAT PRODUCED HEAVY RAIN IN THE WARNED AREA.

* FLASH FLOODING WILL CONTINUE OVER MAINLY RURAL AREAS OF THE
  INDICATED COUNTY.

FLOOD WATERS ARE MOVING DOWN BROWNS CREEK...LITTLE BROWNS 
CREEK...THREEMILE CREEK AND FOURMILE CREEK.  RAINFALL HAS DECREASED 
OVER THE AREA...BUT WITH ALL THE RAIN THAT FELL THIS EVENING...WATER 
LEVELS WILL REMAIN HIGH WITH FLOODING OCCURRING THROUGH 145 AM.

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. MAKE THE SMART
CHOICE...TURN AROUND...DONT DROWN.

LAT...LON 3859 10626 3859 10609 3879 10612 3876 10623

$$
1 follow-up statement
000 
WGUS75 KPUB 030737
FFSPUB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
137 AM MDT FRI AUG 3 2007

COC015-030753-
CHAFFEE CO-
137 AM MDT FRI AUG 3 2007

...THE FLASH FLOOD WARNING WILL EXPIRE AT 145 AM MDT FOR CENTRAL 
CHAFFEE COUNTY...

HEAVY RAIN HAS MOVED OUT OF THE AREA...AND WATER LEVELS HAVE GONE 
DOWN. PLEASE USE EXTREME CAUTION IF TRAVELING THROUGH CENTRAL 
CHAFFEE COUNTY. IF YOU SHOULD ENCOUNTER WATER CROSSING THE 
ROAD...PLEASE DO NOT CROSS IT AS THE ROAD MAY BE WASHED OUT. 
REMEMBER...TURN AROUND DO NOT DROWN. 

BE ALERT FOR THE POSSIBILITY OF DEBRIS ON ROADWAYS AND POSSIBLE MUD 
SLIDES.

LAT...LON 3859 10626 3859 10609 3879 10612 3876 10623

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 8:38 PM MDTFlash Flood WarningPUBChaffee3 hr
Aug 3, 4:27 AM MDTFlash Flood WatchPUBAlamosa, Chaffee, Conejos, Costilla, Custer, El Paso and 9 more17 hr

Nearby

Flash Flood Warnings in Colorado, 2007Every flash flood warning in 2007

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.