Alert archive / Colorado / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 39, NWS Goodland, KS

June 20, 1987El Paso County, Lincoln County, Colorado

NWS Goodland, KS issued this severe thunderstorm warning at Jun 20, 1987, 6:43 PM MDT for El Paso County, Lincoln County, Colorado. It was in force for 57 min.

The area

The counties it named.

The facts

Issued: Jun 20, 1987, 6:43 PM MDT (00:43 UTC)
Expired: Jun 20, 1987, 7:40 PM MDT
In force: 57 min
Issued by: NWS Goodland, KS
Area: Whole counties

Counties El Paso County, CO, Lincoln 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 00:00Z, 0.7 hours before the alert went out and 127 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: 3234 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: -35 m²/s²
0-3 km storm-relative helicity: -54 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 KCOS 210043
SVRCOS
COC073-041-039-210140-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLORADO SPRINGS CO
643 PM MDT SAT JUN 20 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 740 PM MDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

EAST CENTRAL COLORADO...
 SOUTHEAST LINCOLN...EASTERN EL PASO AND 
 SOUTHERN ELBERT

A SEVERE THUNDERSTORM WAS NOTED OVER THE TOWN OF RUSH IN EXTREME
EASTERN EL PASO COUNTY COLORADO MOVING INTO SOUTHERN ELBERT AND
SOUTHWEST LINCOLN COUNTIES OF COLORADO....MOVING EAST AT ABOUT 20
MPH.  HAIL HAS BEEN REPORTED WITH THIS STORM ALONG WITH STRONG
GUSTY WIND.

IF SEVERE WEATHER APPROACHES YOUR AREA..GO TO A STURDY SHELTER AWAY
FROM CREEK BEDS AND OTHER LOW AREAS PRONE TO FLOODING.  REMEMBER...
A SEVERE THUNDERSTORM CAN PRODUCE LARGE HAIL...DAMAGING WINDS OF OVER
60 MPH...DEADLY LIGHTNING...AND HEAVY RAINS THAT CAN QUICKLY FLOOD
LOW LYING AREAS.

THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR
NO ADVANCE WARNING...SO BE ON THE LOOKOUT AND BE PREPARED TO MOVE TO
A PLACE OF SAFETY IF ONE IS SPOTTED.

IN HOMES GO TO THE BASEMENT OR INTO A CLOSET OR BATHROOM.  IN SCHOOLS
...HIGH RISES AND HOSPITALS GO TO AN INTERIOR HALLWAY ON THE LOWEST
FLOOR.  IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GO TO A
SAFE PLACE...

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORTS TO THE LOCAL NATIONAL WEATHER SERVICE OFFICE.

 CROWLEY

The office that day

Everything else NWS Goodland, KS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 20, 6:43 PM MDT	Severe Thunderstorm Warning	GLD	Elbert	57 min
Jun 20, 6:55 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne, Kit Carson	75 min
Jun 20, 7:39 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne, Elbert, Lincoln	56 min
Jun 20, 7:39 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson	56 min
Jun 20, 8:44 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne, Kit Carson	56 min
Jun 21, 4:58 PM MDT	Severe Thunderstorm Warning	GLD	Lincoln	77 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1987 Every severe thunderstorm warning in 1987

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.