Alert archive / Colorado / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 4, NWS Denver/Boulder, CO

June 2, 1986Washington County, Yuma County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 2, 1986, 8:18 AM MDT for Washington County, Yuma County, Colorado. It was in force for 57 min.

The area

The counties it named.

The facts

Issued
Jun 2, 1986, 8:18 AM MDT (14:18 UTC)
Expired
Jun 2, 1986, 9:15 AM MDT
In force
57 min
Issued by
NWS Denver/Boulder, CO
Area
Whole counties

Counties Washington County, CO, Yuma County, CO

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 2.3 hours before the alert went out and 38 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 1986-06-02Temperature 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 1986-06-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 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
877 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
71 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 021418
SVRDEN
COC121-125-021515-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
818 AM MDT MON JUN 2 1986

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

NORTHEAST COLORADO...SOUTHEAST WASHINGTON AND SOUTHWEST YUMA

THIS WARNING INCLUDES THE FOLLOWING TOWNS AND CITIES... COPE...JOES.
..AND KIRK COLORADO 50 TO 55 MILES NORTHEAST OF LIMON

AT 455 PM MDT A SPOTTER REPORTED THAT 1 INCH DIAMETER HAIL WAS
FALLING IN THE TOWN OF COPE COLORADO ALONG WITH GUSTY WINDS AND
HEAVY RAIN.

REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE HAIL...DAMAGING
WINDS OF OVER 60 MPH...DEADLY LIGHTNING...AND HEAVY RAINS THAT CAN
QUICKLY FLOOD A LOW LYING AREA.

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORTS TO THE NATIONAL WEATHER SERVICE IN DENVER...OR
CALL YOUR REPO:RT TO THE NATIONAL WEATHER SERVICE IN DENVER AT
361-0663.  DO NOT CALL THIS NUMBER FOR INFORMATION.

FRANSON

Nearby

Severe Thunderstorm Warnings in Colorado, 1986Every severe thunderstorm warning in 1986

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.