Alert archive / Colorado / Flash Flood Warnings in 2007

Flash Flood Warning 22, NWS Pueblo, CO

August 1, 2007Pueblo County, Colorado

NWS Pueblo, CO issued this flash flood warning at Aug 1, 2007, 9:30 PM MDT for 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 counties it named.

The facts

Issued
Aug 1, 2007, 9:30 PM MDT (03:30 UTC)
Expired
Aug 2, 2007, 12:30 AM MDT
In force
3 hr
Issued by
NWS Pueblo, CO
Area
Whole counties

County Pueblo County, CO

The radar

The Pueblo radar (KPUX), 43 km from the middle of the area, began a volume at 03:32 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, 3.5 hours before the alert went out and 219 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 2007-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 61 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 2007-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -44 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
61 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
2701 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-44 m²/s²
0-3 km storm-relative helicity
-18 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 020332
FFWPUB
COC101-020630-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PUEBLO CO
930 PM MDT WED AUG 1 2007

THE NATIONAL WEATHER SERVICE IN PUEBLO HAS ISSUED A

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

* UNTIL 1230 AM MDT...

* AT 924 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  FLASH FLOODING FROM A STORM OVER THE MASON GULCH BURN SCAR.

* THE STORM PRODUCING FLASH FLOODING WILL REMAIN OVER MAINLY RURAL
  AREAS OF THE INDICATED COUNTY.

DOPPLER RADAR ESTIMATES THAT RAIN TOTALS OF UP TO 1 AND 1/2 INCHES 
HAVE OCCURRED ACROSS THE SOUTHERN PORTIONS OF THE MASON GULCH BURN 
SCAR AND ADDITIONAL RAINFALL OF UP TO 1/2 INCH IS EXPECTED IN THAT 
AREA. THIS WILL CAUSE FLASH FLOODING OF THE SOUTH RED CREEK.  

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.

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 UNSTABLE WHEN IT RAINS...RESULTING IN MUD FLOWS AND FALLING
ROCK. ROADWAYS CAN BE WASHED OUT BY THE FORCE OF THE RUSHING WATER.

LAT...LON 3811 10504 3813 10497 3820 10502 3820 10510

$$
2 follow-up statements
000 
WGUS75 KPUB 020416
FFSPUB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
1010 PM MDT WED AUG 1 2007

COC101-020630-
PUEBLO CO-
1010 PM MDT WED AUG 1 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1230 AM MDT FOR
EXTREME WEST CENTRAL PUEBLO COUNTY...

AT 1006 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A STORM PRODUCING VERY HEAVY RAIN OVER THE SOUTHERN 
PORTIONS OF THE MASON GULCH BURN SCAR.

DOPPLER RADAR ESTIMATES THAT RAIN TOTALS OF UP TO 2 INCHES HAVE 
OCCURRED ACROSS THE MASON GULCH BURN SCAR IN PUEBLO COUNTY AND 
ADDITIONAL RAINFALL OF 1/4 INCH IS EXPECTED IN THAT AREA.  THIS WILL 
CAUSE FLOODING OF SOUTH RED CREEK...PANTHER CREEK AND NORTH CREEK 
ALONG THE SOUTHERN END OF THE BURN SCAR. 

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 UNSTABLE WHEN IT RAINS...RESULTING IN MUD FLOWS AND FALLING
ROCK. ROADWAYS CAN BE WASHED OUT BY THE FORCE OF THE RUSHING WATER.

LAT...LON 3811 10504 3813 10497 3820 10502 3820 10510

$$
000 
WGUS75 KPUB 020439
FFSPUB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
1036 PM MDT WED AUG 1 2007

COC101-020630-
PUEBLO CO-
1036 PM MDT WED AUG 1 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1230 AM MDT FOR WEST
CENTRAL PUEBLO COUNTY...

AT 1031 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A STORM PRODUCING VERY HEAVY RAIN OVER THE WARNED AREA.

DOPPLER RADAR ESTIMATES THAT RAIN TOTALS OF 2.5 INCHES HAVE OCCURRED 
ACROSS THE MASON GULCH BURN SCAR IN WEST CENTRAL PUEBLO COUNTY.  
ALTHOUGH ADDITIONAL RAINFALL AMOUNTS WILL REMAIN SPOTTY AND 
LIGHT...RUN OFF FROM THE HEAVY RAINFALL WILL CAUSE FLOODING OF SOUTH 
RED CREEK...PANTHER CREEK...AND NORTH CREEK ALONG THE SOUTHERN AND 
EASTERN PORTIONS OF THE BURN SCAR.  IF YOU LIVE ALONG THESE CREEKS 
DOWNSTREAM FROM THE MASON GULCH BURN SCAR...MOVE TO HIGHER GROUND AS 
THESE CREEKS MAY EXPERIENCE RAPID RISES AND CAUSE FLOODING OF 
ROADWAYS IN THE AREA.  

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 UNSTABLE WHEN IT RAINS...RESULTING IN MUD FLOWS AND FALLING
ROCK. ROADWAYS CAN BE WASHED OUT BY THE FORCE OF THE RUSHING WATER.

LAT...LON 3806 10499 3808 10494 3813 10498 3817 10496
      3820 10499 3820 10510

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 7:47 PM MDTSevere Thunderstorm WarningPUBPueblo58 min
Aug 1, 11:47 PM MDTFlash Flood WarningPUBPueblo3 hr
Aug 2, 12:35 AM MDTFlash Flood WarningPUBCuster3 hr
Aug 2, 2:30 AM MDTFlash Flood WarningPUBPueblo90 min
Aug 2, 2:30 AM MDTFlash Flood WarningPUBPueblo90 min
Aug 2, 4:11 AM MDTFlash Flood WatchPUBAlamosa, Chaffee, Costilla, Custer, El Paso, Fremont and 5 more19 hr
Aug 2, 4:49 PM MDTRiver Flood WarningPUBPueblo4 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.