Alert archive / Colorado / Flash Flood Warnings in 2001

Flash Flood Warning 4, NWS Goodland, KS

July 12, 2001Cheyenne County, Colorado

NWS Goodland, KS issued this flash flood warning at Jul 12, 2001, 8:10 PM MDT for Cheyenne 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
Jul 12, 2001, 8:10 PM MDT (02:10 UTC)
Expired
Jul 12, 2001, 11:15 PM MDT
In force
3 hr
Issued by
NWS Goodland, KS
Area
Whole counties

County Cheyenne County, CO

The radar

The Goodland radar (KGLD), 98 km from the middle of the area, began a volume at 02:09 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, 2.2 hours before the alert went out and 128 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 2001-07-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 691 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 00:00Z on 2001-07-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 400 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
691 J/kg
Mixed-layer CIN
-107 J/kg
Mixed-layer LCL
1519 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
400 m²/s²
0-3 km storm-relative helicity
427 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.5

Open this sounding in Storm Lab

The text

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

000 
WRUS1 KGLD 130210
FFWGLD
FFWGLD
COC017-130515-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GOODLAND KS
810 PM MDT THU JUL 12 2001

THE NATIONAL WEATHER SERVICE IN GOODLAND HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CHEYENNE COUNTY IN EAST CENTRAL COLORADO

* UNTIL 1115 PM MDT

* AT 810 PM MDT...NATIONAL WEATHER SERVICE RADAR INDICATED VERY HEAVY
  RAINFALL WAS OCCURRING OVER ARAPAHOE...OR ABOUT 7 MILES NORTHEAST
  OF CHEYENNE WELLS...MOVING NORTHEAST AT 10 MPH.

* SOME LOCATIONS INCLUDED IN THIS WARNING ARE...ARAPAHOE AND CHEYENNE
  WELLS.

MOST FLASH FLOOD DEATHS OCCUR AT NIGHT. BE EXPECIALLY CAUTIOUS AT
NIGHT SINCE IT IS HARDER TO RECOGNIZE THE DANGERS OF FLASH FLOODS.
USE CAUTION IN AND AROUND STREAMS...CREEKS...OR DRAINAGE DITCHES.
TAKE THE SHORTEST PATH TO REACH HIGHER GROUND...BUT DO NOT DRIVE
THROUGH RISING WATER.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA SOURCE OF
WEATHER INFORMATION FOR THE LATEST STATEMENTS AND WARNINGS CONCERNING
THIS DANGEROUS SEVERE WEATHER THREAT.

$$

LAT...LON 3904 10243 3862 10245 3862 10205 3904 10205

BARKER

The office that day

Everything else NWS Goodland, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 12, 7:39 PM MDTSevere Thunderstorm WarningGLDCheyenne66 min
Jul 12, 10:00 PM MDTFlash Flood WarningGLDCheyenne, Kit Carson6 hr

Nearby

Flash Flood Warnings in Colorado, 2001Every flash flood warning in 2001

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.