Alert archive / Colorado / Flash Flood Warnings in 1995

Flash Flood Warning 3, NWS Denver/Boulder, CO

June 7, 1995Morgan County, Colorado

NWS Denver/Boulder, CO issued this flash flood warning at Jun 7, 1995, 11:29 PM MDT for Morgan County, Colorado. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jun 7, 1995, 11:29 PM MDT (05:29 UTC)
Expired
Jun 8, 1995, 2:30 AM MDT
In force
3 hr
Issued by
NWS Denver/Boulder, CO
Area
Whole counties

County Morgan County, CO

The radar

The Denver radar (KFTG), 82 km from the middle of the area, began a volume at 05:29 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, 5.5 hours before the alert went out and 66 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 1995-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 581 joules per kilogram.LCLEL10008507005003002001001 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 1995-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 square meters per square second.1939587897Sfc1 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
581 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
1435 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
283 m²/s²
Significant tornado parameter
0.4
Supercell composite
3.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KDEN 080535
FFWDEN
COC087-080830-

BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DENVER CO
1129 PM MDT WED JUN 07 1995

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A FLASH FLOOD
WARNING EFFECTIVE UNTIL 230 AM MDT FOR PEOPLE IN THE FOLLOWING
COUNTIES

IN NORTHEASTERN COLORADO
      MORGAN

INCLUDING THE FOLLOWING LOCATIONS
     FORT MORGAN...LOG LANE VILLAGE AND WELDONA

AT 1129 PM MDT THE SHERIFFS OFFICE REPORTED FLOODING OCCURRING
IN WELDONIA AND ACROSS MANY SECONDARY ROADS.   

DOPPLER RADAR CONTINUED TO SHOW THUNDERSTORMS PRODUCING HEAVY
RAIN CONTINUING OVER MORGAN COUNTY WITH RAINFALL ESTIMATES OF UP
TO 4 INCHES IN NORTHERN PORTIONS OF THE COUNTY.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR
OCCURRING.  IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER
GROUND IMMEDIATELY.  RESIDENTS LIVING ALONG STREAMS AND CREEKS
SHOULD TAKE IMMEDIATE PRECAUTIONS.  DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.  IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND
SEEK HIGHER GROUND.

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMdENT
AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
FORECAST OFFICE IN DENVER.

KLEYLA

LAT...LON 4013 10366 4013 10395 4036 10396 4036 10367

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jun 7, 9:30 PM MDT, 1 hour 59 minutes before
COZ042>043-080400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
930 PM MDT WED JUN 07 1995

...URBAN AND SMALL STREAM FLOOD ADVISORY EXPIRES...

THE URBAN AND SMALL STREAM FLOOD ADVISORY FOR SOUTHERN AND CENTRAL WELD
COUNTY WAS ALLOWED TO EXPIRE AT 9 PM.  AT 925 PM...WEATHER SERVICE RADAR
INDICATED THAT THE THUNDERSTORMS WHICH PRODUCED LARGE HAIL...HEAVY RAINS
AND A FEW TORNADOS HAD MOVED INTO NORTHERN MORGAN AND NORTHEAST WELD
COUNTY.  AN AUTOMATED WEATHER STATION IN GREELEY RECORDED ONE INCH OF
RAINFALL BETWEEN 7 AND 8 PM.

THE HEAVY RAINS DURING THE EVENING MAY HAVE FLOODED LOW LYING AREAS SUCH
AS DITCHES AND UNDERPASSES.  AVOID THESE AREAS AND DO NOT CROSS FLOODED
ROADS AS THEY MAY BE WASHED OUT.  WATER LEVELS OF SMALL STREAMS AND
RIVERS MAY ALSO RISE...THEREFORE SEEK HIGHER GROUND IF THREATENED BY
FLOOD WATERS.

A TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF EASTERN COLORADO UNTIL
3 AM.

DANKERS
LAT...LON 4005 10421 4010 10495 4051 10486 4064 10413

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 7, 6:30 PM MDTTornado WarningBOUWeld45 min
Jun 7, 7:15 PM MDTTornado WarningBOUWeld45 min
Jun 7, 7:56 PM MDTTornado WarningBOUMorgan, Weld49 min
Jun 7, 8:33 PM MDTTornado WarningBOUMorgan, Weld42 min
Jun 7, 9:45 PM MDTTornado WarningBOUArapahoe, Elbert, Lincoln45 min
Jun 7, 9:45 PM MDTTornado WarningBOUAdams, Washington45 min
Jun 7, 10:00 PM MDTSevere Thunderstorm WarningBOULogan, Morgan, Washington45 min
Jun 7, 10:28 PM MDTTornado WarningBOULogan, Washington32 min
Jun 7, 10:32 PM MDTTornado WarningBOUAdams, Arapahoe, Washington43 min
Jun 7, 11:59 PM MDTFlash Flood WarningBOULogan, Weld3 hr

Nearby

Flash Flood Warnings in Colorado, 1995Every flash flood warning in 1995

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.