Alert archive / Colorado / Flash Flood Warnings in 2004

Flash Flood Warning 31, NWS Pueblo, CO

August 18, 2004Crowley County, Colorado

NWS Pueblo, CO issued this flash flood warning at Aug 18, 2004, 9:44 PM MDT for Crowley County, Colorado. It was in force for 4 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
Aug 18, 2004, 9:44 PM MDT (03:44 UTC)
Expired
Aug 19, 2004, 1:45 AM MDT
In force
4 hr
Issued by
NWS Pueblo, CO
Area
Counties, with a storm outline in the text

County Crowley County, CO

The radar

The Pueblo radar (KPUX), 51 km from the middle of the area, began a volume at 03:46 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, 3.7 hours before the alert went out and 183 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 2004-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 45 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 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 2004-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 149 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
45 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
592 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
149 m²/s²
0-3 km storm-relative helicity
246 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 190347
FFWPUB
COC025-190745-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PUEBLO CO
944 PM MDT WED AUG 18 2004

THE NATIONAL WEATHER SERVICE IN PUEBLO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN CROWLEY COUNTY IN SOUTHEAST COLORADO

* UNTIL 145 AM MDT

* AT 941 PM MDT...VERY HEAVY RAIN WAS REPORTED FROM A LINE OF 
  THUNDERSTORMS EXTENDING FROM 20 MILES NORTH OF ORDWAY TO 12 MILES 
  SOUTHEAST OF ORDWAY.  THE LINE WAS NEARLY STATIONARY.

* THE THUNDERSTORM PRODUCING VERY HEAVY RAIN WILL BE...
  OVER RURAL EASTERN CROWLEY COUNTY THROUGH AT LEAST 1100 PM. 

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. IF YOUR VEHICLE STALLS IN WATER
ABANDON IT IMMEDIATELY AND GO TO HIGHER GROUND. BE ESPECIALLY
CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF
FLOODING.

LAT...LON 3812 10373 3816 10361 3817 10350 3850 10351
      3850 10386

$$
2 follow-up statements
000 
WGUS75 KPUB 190418
FFSPUB
COC025-190745-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
1014 PM MDT WED AUG 18 2004

...THE FLASH FLOOD WARNING REMAINS IN EFFECT FOR EASTERN CROWLEY 
COUNTY UNTIL 145 AM MDT THURSDAY MORNING...

THUNDERSTORMS...PRODUCING HEAVY RAIN...ARE NEARLY STATIONARY OVER 
EASTERN CROWLEY COUNTY.  THE LINE OF STORMS EXTENDS FROM 20 MILES 
NORTH OF ORDWAY TO ABOUT 14 MILES SOUTHEAST OF ORDWAY.  RADAR 
ESTIMATES UP TO 4 INCHES IN THE PAST HOUR FROM THESE STORMS.  MOST 
OF THESE STORMS ARE OVER TRIBUTARIES OF HORSE CREEK...AND FLASH 
FLOODING OF HORSE CREEK AND ITS TRIBUTARIES ARE LIKELY. 

BE ALERT FOR FAST RISING WATER AND BE READY TO TAKE QUICK ACTION IF
NECESSARY. DO NOT DRIVE OR WALK INTO WATER OF UNKNOWN DEPTH. 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. KEEP CHILDREN AND OTHERS AWAY FROM FAST FLOWING
WATER. FLOODING WILL OCCUR ALONG CREEKS...IN DRAINAGE AREAS...OVER
RURAL ROADS...IN NORMALLY DRY WASHES AND ARROYOS...AND OVER LOW LYING
LAND ALONG CREEK BANKS.

$$
000 
WGUS75 KPUB 190754
FFSPUB
COC025-190815-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
148 AM MDT THU AUG 19 2004

...THE FLASH FLOOD WARNING HAS BEEN CANCELED FOR CROWLEY COUNTY...

RAIN CONTINUES TO FALL OVER MUCH OF OTERO COUNTY BUT RAINFALL RATES 
HAVE DECREASED AND THE THREAT OF FLASH FLOODING HAS ENDED. THERE MAY 
BE SOME LOW AREAS OR AREAS WITH POOR DRAINAGE THAT WILL HAVE 
STANDING WATER AND SMALL CREEKS AND STREAMS MAY CONTINUE TO RUN FAST 
THROUGH THE EARLY MORNING HOURS.  RAINFALL AMOUNTS WILL BE 
CONSIDERABLY LOWER EARLY THIS MORNING AS THE SHOWERS DIMINISH TO A 
MORE STEADY LIGHT RAIN.

EVEN THOUGH THE THREAT OF FLASH FLOODING HAS ENDED YOU SHOULD STILL 
BE ALERT FOR POOLING OR STANDING WATER ESPECIALLY IN LOW AREAS. 
NORMALLY DRY CREEKS AND SMALL STREAMS MAY HAVE SOME FAST MOVING 
WATER IN THEM THIS MORNING. DO NOT DRIVE OR WALK INTO WATER OF 
UNKNOWN DEPTH. 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. KEEP CHILDREN AND OTHERS AWAY FROM 
FAST FLOWING WATER AND STORM DRAINS...WHICH COULD BECOME DEADLY 
DURING HIGH WATER. FLOODING WILL OCCUR ALONG CREEKS...IN DRAINAGE 
AREAS...IN UNDERPASSES...OVER STREETS AND RURAL ROADS...IN NORMALLY 
DRY WASHES AND ARROYOS...AND OVER LOW LYING LAND ALONG CREEK BANKS.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 6:32 PM MDTFlash Flood WarningPUBChaffee3 hr
Aug 18, 8:50 PM MDTFlash Flood WarningPUBOtero3 hr
Aug 18, 9:27 PM MDTFlash Flood WarningPUBChaffee3 hr
Aug 18, 11:12 PM MDTFlash Flood WarningPUBBent3 hr
Aug 18, 11:32 PM MDTFlash Flood WarningPUBOtero3 hr
Aug 19, 4:30 AM MDTFlash Flood WarningPUBCrowley3 hr

Nearby

Flash Flood Warnings in Colorado, 2004Every flash flood warning in 2004

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.