Alert archive / Colorado / Flash Flood Warnings in 1997

Flash Flood Warning 3, NWS Goodland, KS

July 31, 1997Yuma County, Colorado

NWS Goodland, KS issued this flash flood warning at Jul 31, 1997, 5:34 PM MDT for Yuma County, Colorado. It was in force for 6 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 31, 1997, 5:34 PM MDT (23:34 UTC)
Expired
Jul 31, 1997, 11:30 PM MDT
In force
6 hr
Issued by
NWS Goodland, KS
Area
Whole counties

County Yuma County, CO

The radar

The Goodland radar (KGLD), 94 km from the middle of the area, began a volume at 23:38 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, 11.6 hours before the alert went out and 70 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 1997-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 64 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 12:00Z on 1997-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 square meters per square second.193958Sfc1 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
64 J/kg
Mixed-layer CIN
-197 J/kg
Mixed-layer LCL
1163 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
34 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 
TTAA00 KGLD 312334
FFWGLD
COC125-010530-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GOODLAND KS
534 PM MDT THU JUL 31 1997

* FLASH FLOOD WARNING FOR
  NORTHWESTERN YUMA COUNTY IN NORTHEASTERN COLORADO

* UNTIL 1130 PM MDT
 
* SOME STREAMS AFFECTED
  ROCK CREEK AND ITS TRIBUTARIES
  SURVEYOR CREEK

* CAUSE AND EFFECT
AT 535 PM MDT...GOODLAND DOPPLER RADAR ESTIMATED RAINFALL RATES OF
1.5 TO 2.5 INCHES PER HOUR OVER THE UPSTREAM BNASINS OF ROCK AND
SURVEYOR CREEKS. THE ALREADY SATURATED SOILS OVER THE REGION WILL
ALLOW RAPID RUNOFF...PRODUCING FLASH FLOODING ALONG THESE CREEKS.

DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD!

MATHEWSON/TURNER

Nearby

Flash Flood Warnings in Colorado, 1997Every flash flood warning in 1997

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.