Alert archive / Colorado / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 13, NWS Denver/Boulder, CO

June 12, 1992Adams County, Washington County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 12, 1992, 5:45 PM MDT for Adams County, Washington County, Colorado. It was in force for 30 min.

The area

The counties it named.

The facts

Issued
Jun 12, 1992, 5:45 PM MDT (23:45 UTC)
Expired
Jun 12, 1992, 6:15 PM MDT
In force
30 min
Issued by
NWS Denver/Boulder, CO
Area
Whole counties

Counties Adams County, CO, Washington County, CO

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 11.8 hours before the alert went out and 46 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 1992-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 1992-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 square meters per square second.1939Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1623 m above ground
0-6 km bulk shear
3 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
-5 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 122345
SVRDEN
COC001-121-130015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
545 PM MDT FRI JUN 12 1992

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 615 PM MDT FOR PEOPLE IN
THE FOLLOWING COUNTIES

IN NORTHEASTERN COLORADO
     EASTERN ADAMS AND WEST CENTRAL WASHINGTON

INCLUDING THE FOLLOWING LOCATIONS
     LAST CHANCE...LINDON...SHAMROCK AND WOODLIN SCHOOL

AT 540 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A SEVERE THUNDERSTORM 3 MILES NORTH OF WOODLIN SCHOOL ...OR
ABOUT 40 MILES NORTH OF LIMON.

THE PUBLIC REPORTED VERY HEAVY RAIN AND PEA TO MARBLE HAIL 
AT 530 PM AT HIGHWAY 71 BETWEEN WOODROW AND LAST CHANCE.  

THE STORM WAS NOT MOVING.  

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 3971 10328 3977 10379 4001 10396 3997 10353

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 12, 2:19 PM MDT, 3 hours 26 minutes before
COZ002-011-122130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
215 PM MDT FRI JUN 12 1992

...RAPIDLY DEVELOPING THUNDERSTORM IN NORTHERN LARIMER COUNTY...

NATIONAL WEATHER SERVICE DOPPLER RADAR AT 210 PM INDICATED A
RAPIDLY DEVELOPING THUNDERSTORM LOCATED 10 MILES NORTH OF RUSTIC...
OR ABOUT 35 MILES NORTHWEST OF FORT COLLINS.  THIS STORM WAS MOVING
VERY SLOWLY...SO MAY PRODUCE SOME LOCALLY HEAVY RAIN.  THERE MAY
ALSO BE SOME HAIL...AND FREQUENT LIGHTNING.

RESIDENTS OF NORTHERN LARIMER COUNTY SHOULD MONITOR THE DEVELOPING
STORM...AND BE PREPARED TO TAKE COVER IF NECESSARY.

RTG

Nearby

Severe Thunderstorm Warnings in Colorado, 1992Every severe thunderstorm warning in 1992

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.