Alert archive / Colorado / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 45, NWS Denver/Boulder, CO

June 6, 19954 counties in Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 6, 1995, 8:23 PM MDT for 4 counties in Colorado. It was in force for 52 min.

The area

The counties it named.

The facts

Issued
Jun 6, 1995, 8:23 PM MDT (02:23 UTC)
Expired
Jun 6, 1995, 9:15 PM MDT
In force
52 min
Issued by
NWS Denver/Boulder, CO
Area
Whole counties

Counties Logan County, CO, Morgan County, CO, Washington County, CO, Weld County, CO

The radar

The Denver radar (KFTG), 102 km from the middle of the area, began a volume at 02:26 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, 2.4 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 1995-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 565 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 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 1995-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 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
565 J/kg
Mixed-layer CIN
-109 J/kg
Mixed-layer LCL
2574 m above ground
0-6 km bulk shear
72 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
183 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KDEN 070225 RRA
SVRDEN
COC075-087-121-123-070315-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
823 PM MDT TUE JUN 06 1995

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 915 PM MDT FOR PEOPLE IN
THE FOLLOWING COUNTIES

IN NORTHEASTERN COLORADO
     WESTERN LOGAN...NORTHERN MORGAN...EXTREME NORTH CENTRAL
     WASHINGTON AND EAST CENTRAL WELD

INCLUDING THE FOLLOWING LOCATIONS
     ANTELOPE SPRINGS...ATWOOD...HILLROSE...LOGAN CORNERS...
     PASS...PREWITT RESERVOIR...SNYDER...STERLING...STONEHAM AND
     WILLARD

AT 823 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A SEVERE THUNDERSTORM 6 MILES SOUTH OF NEW RAYMER ...OR ABOUT
33 MILES SOUTHWEST OF STERLING.

THE PUBLIC REPORTED HAIL TO THE SIZE OF QUARTERS 5 MILES NORTH OF FORT
MORGAN AT 813 PM.

THE STORM WAS MOVING EAST NORTHEAST AT 20 MPH.

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY
SHELTER AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS.
REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING
HAIL...DAMAGING WINDS OVER 60 MPH...DEADLY LIGHTNING...AND VERY
HEAVY RAIN.

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


LAT...LON 4033 10313 4033 10393 4058 10392 4087 10324

What forecasters said that day

The local office's own words before this severe thunderstorm 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 6, 4:45 PM MDT, 3 hours 38 minutes before
COZ033>036-038>046-048>050-090>091-062345-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
445 PM MDT TUE JUN 06 1995

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 10 PM FOR PORTIONS OF
NORTHEAST COLORADO...

AT 435 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SCATTERED THUNDERSTORMS ALONG THE FRONT RANGE FROM WEST OF DENVER TO
WEST OF GREELEY.  THE STRONGEST THUNDERSTORMS CAPABLE OF PRODUCING VERY
HEAVY RAIN...HAIL...STRONG WINDS AND DANGEROUS LIGHTNING WERE LOCATED
NEAR LOVELAND AND JUST SOUTHWEST OF FORT COLLINS AND NEAR GREELEY.  THE
THUNDERSTORMS WERE MOVING NORTH TO NORTHEAST AT 30 MPH.

CONDITIONS ACROSS NORTHEAST COLORADO ARE FAVORABLE FOR THE DEVELOPMENT
OF THUNDERSTORMS THIS EVENING WITH SOME STORMS POSSIBLY BECOMING SEVERE.
PEOPLE ACROSS NORTHEAST COLORADO SHOULD BE AWARE OF RAPIDLY CHANGING
WEATHER CONDITIONS AND BE PREPARED TO TAKE SHELTER IF THREATENING
WEATHER APPROACHES.

KLEYLA
Special weather statement, Jun 6, 4:46 PM MDT, 3 hours 37 minutes before
COZ033>036-038>046-048>050-090>091-062345-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
445 PM MDT TUE JUN 06 1995

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 10 PM FOR PORTIONS OF
NORTHEAST COLORADO...

AT 435 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SCATTERED THUNDERSTORMS ALONG THE FRONT RANGE FROM WEST OF DENVER TO
WEST OF GREELEY.  THE STRONGEST THUNDERSTORMS CAPABLE OF PRODUCING VERY
HEAVY RAIN...HAIL...STRONG WINDS AND DANGEROUS LIGHTNING WERE LOCATED
NEAR LOVELAND AND JUST SOUTHWEST OF FORT COLLINS AND NEAR GREELEY.  THE
THUNDERSTORMS WERE MOVING NORTH TO NORTHEAST AT 30 MPH.

CONDITIONS ACROSS NORTHEAST COLORADO ARE FAVORABLE FOR THE DEVELOPMENT
OF THUNDERSTORMS THIS EVENING WITH SOME STORMS POSSIBLY BECOMING SEVERE.
PEOPLE ACROSS NORTHEAST COLORADO SHOULD BE AWARE OF RAPIDLY CHANGING
WEATHER CONDITIONS AND BE PREPARED TO TAKE SHELTER IF THREATENING
WEATHER APPROACHES.

KLEYLA

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 6, 6:27 PM MDTTornado WarningBOULogan, Phillips, Sedgwick48 min
Jun 6, 6:32 PM MDTSevere Thunderstorm WarningBOULarimer, Weld28 min
Jun 6, 6:47 PM MDTTornado WarningBOUMorgan, Weld43 min
Jun 6, 7:28 PM MDTSevere Thunderstorm WarningBOUMorgan, Weld47 min
Jun 6, 7:30 PM MDTSevere Thunderstorm WarningBOULogan, Weld45 min
Jun 6, 9:13 PM MDTSevere Thunderstorm WarningBOULogan47 min
Jun 7, 2:30 AM MDTFlash Flood WarningBOUMorgan
Jun 7, 5:38 PM MDTSevere Thunderstorm WarningBOUBoulder, Larimer, Weld52 min
Jun 7, 5:38 PM MDTSevere Thunderstorm WarningBOUAdams, Jefferson52 min
Jun 7, 5:52 PM MDTTornado WarningBOUAdams, Boulder, Weld38 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1995Every severe thunderstorm 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.