Alert archive / Colorado / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 40, NWS Goodland, KS

June 20, 1987Elbert County, Colorado

NWS Goodland, KS issued this severe thunderstorm warning at Jun 20, 1987, 6:43 PM MDT for Elbert 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

County Elbert 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 101 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 1987-06-21Temperature 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 km15 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 1987-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -35 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
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

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 20, 8:22 PM MDTSevere Thunderstorm WarningGLDSherman58 min
Jun 20, 6:43 PM MDTSevere Thunderstorm WarningGLDEl Paso, Lincoln57 min
Jun 20, 6:55 PM MDTSevere Thunderstorm WarningGLDCheyenne, Kit Carson75 min
Jun 20, 7:39 PM MDTSevere Thunderstorm WarningGLDCheyenne, Elbert, Lincoln56 min
Jun 20, 7:39 PM MDTSevere Thunderstorm WarningGLDKit Carson56 min
Jun 20, 8:44 PM MDTSevere Thunderstorm WarningGLDCheyenne, Kit Carson56 min
Jun 21, 4:58 PM MDTSevere Thunderstorm WarningGLDLincoln77 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1987Every 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.