Alert archive / Colorado / Flash Flood Warnings in 1997

Flash Flood Warning 2, NWS Denver/Boulder, CO

June 3, 1997Weld County, Colorado

NWS Denver/Boulder, CO issued this flash flood warning at Jun 3, 1997, 3:00 AM MDT for Weld 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
Jun 3, 1997, 3:00 AM MDT (09:00 UTC)
Expired
Jun 3, 1997, 6:00 AM MDT
In force
3 hr
Issued by
NWS Denver/Boulder, CO
Area
Whole counties

County Weld County, CO

The radar

The Cheyenne radar (KCYS), 75 km from the middle of the area, began a volume at 09:04 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, 9.0 hours before the alert went out and 125 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 1997-06-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 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 1997-06-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.1939Sfc1 km3 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
1 J/kg
Mixed-layer CIN
-187 J/kg
Mixed-layer LCL
2299 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
25 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 KDEN 030909
FFWDEN
COC123-031200-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE DENVER CO
300 AM MDT TUE JUN 3 1997

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A FLOOD WARNING 
EFFECTIVE UNTIL 600 AM MDT FOR PEOPLE IN THE FOLLOWING COUNTIES

IN NORTHEAST COLORADO
     CENTRAL WELD

INCLUDING THE FOLLOWING LOCATIONS
     BARNESVILLE

A FLOOD WARNING HAS BEEN ISSUED ALONG CROW CREEK FROM THE VICINITY 
OF BARNESVILLE SOUTH TO ITS CONFLUENCE WITH THE SOUTH PLATTE RIVER
NORTH OF KUNER.  

A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.
ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS IMMEDIATELY.

HOMES ALONG CROW CREEK NEAR BARNESVILLE HAVE BEEN FLOODED AND
EVACUATIONS HAVE TAKEN PLACE.  SOME ROADS REMAIN FLOODED
IN THE AREA.      

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STORM TOTAL RAINFALL
OF UP TO 2 TO 3 INCHES LAST EVENING NORTH OF BARNESVILLE.  EXCESSIVE
RUNOFF FROM JTHIS RAINFALL HAS CAUSED FLOODING ALONG CROW CREEK.

NO ADDITIONAL RAINFALL IS EXPECTED DURING THE EARLY MORNING HOURS.  

GARD...WSFO DENVER

The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 2, 6:02 PM MDTSevere Thunderstorm WarningBOUMorgan43 min
Jun 2, 6:38 PM MDTTornado WarningBOUMorgan37 min
Jun 2, 7:13 PM MDTTornado WarningBOUMorgan32 min
Jun 2, 8:59 PM MDTSevere Thunderstorm WarningBOUMorgan31 min

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.