Alert archive / Colorado / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 4, NWS Denver/Boulder, CO

June 5, 1992Adams County, Denver County, Jefferson County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 5, 1992, 12:46 PM MDT for Adams County, Denver County, Jefferson County, Colorado. It was in force for 14 min.

The area

The counties it named.

The facts

Issued: Jun 5, 1992, 12:46 PM MDT (18:46 UTC)
Expired: Jun 5, 1992, 1:00 PM MDT
In force: 14 min
Issued by: NWS Denver/Boulder, CO
Area: Whole counties

Counties Adams County, CO, Denver County, CO, Jefferson County, CO

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 6.8 hours before the alert went out and 137 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2832 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 53 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 051848
SVRDEN
COC001-031-059-051930-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
1246 PM MDT FRI JUN 05 1992

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 130 PM MDT FOR PEOPLE IN
THE FOLLOWING COUNTIES

IN NORTHEASTERN COLORADO
     WEST CENTRAL ADAMS...NORTHERN DENVER AND NORTHEASTERN
     JEFFERSON

INCLUDING THE FOLLOWING LOCATIONS
     ARVADA...COMMERCE CITY...DENVER...EDGEWATER...LAKEWOOD...
     LEYDEN...MOUNTAIN VIEW...NORTHGLENN...THORNTON...
     WESTMINSTER AND WHEAT RIDGE

AT 1246 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A SEVERE THUNDERSTORM 3 MILES SOUTH OF WESTMINSTER ...OR ABOUT
11 MILES NORTHWEST OF DENVER.

THE STORM WAS MOVING EAST SOUTHEAST AT 40 MILES AN HOUR.

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.

WOLF

LAT...LON 3976 10488 3976 10511 3991 10511 3993 10485

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 5, 11:30 AM MDT, 1 hour 16 minutes before

COZ002-004-011-012-013-060000-

SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST COLORADO
NATIONAL WEATHER SERVICE DENVER CO
1130 AM MDT FRI JUN 05 1992

THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES

ADAMS          DENVER     JACKSON      LOGAN       SEDGWICK     YUMA
ARAPAHOE       DOUGLAS    JEFFERSON    MORGAN      SUMMIT
BOULDER        GILPIN     LARIMER      PARK        WASHINGTON
CLEAR CREEK    GRAND      LAKE         PHILLIPS    WELD

ANOTHER UPPER LEVEL SYSTEM AND COLD FRONT WILL MOVE ACROSS NORTHEAST
COLORADO THIS AFTERNOON AND EVENING.  THUNDERSTORMS DEVELOPING OVER THE
MOUNTAINS WILL MOVE INTO THE FRONT RANGE THROUGH EARLY AFTERNOON AND
WILL BE STRONG WITH SMALL HAIL AND GUSTY WINDS.

FURTHER EAST...CONDITIONS WILL BE EVEN MORE FAVORABLE FOR THUNDERSTORM
DEVELOP.  SEVERE WEATHER IS PROBABLE EAST OF THE FRONT RANGE AND A
SEVERE THUNDERSTORM OR TORNADO WATCH MAY BE REQUIRED THIS AFTERNOON.
HAIL AND STRONG WINDS ARE THE MAIN THREAT...THOUGH TORNADOES MAY ALSO BE
POSSIBLE.  SPOTTER ACTIVATION MAY BE REQUIRED FOR THE EASTERN PLAINS.

WOLF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 4, 8:00 PM MDT	Severe Thunderstorm Warning	BOU	Logan, Weld	30 min
Jun 4, 8:43 PM MDT	Severe Thunderstorm Warning	BOU	Logan, Phillips, Sedgwick	32 min
Jun 4, 9:38 PM MDT	Severe Thunderstorm Warning	BOU	Washington	37 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1992 Every 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.