Alert archive / Colorado / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 93, NWS Goodland, KS

July 20, 1990El Paso County, Lincoln County, Colorado

NWS Goodland, KS issued this severe thunderstorm warning at Jul 20, 1990, 2:45 PM MDT for El Paso County, Lincoln County, Colorado. It was in force for 60 min. 4 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jul 20, 1990, 2:45 PM MDT (20:45 UTC)
Expired
Jul 20, 1990, 3:45 PM MDT
In force
60 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.

What was reported inside it

TimeReportWhereRemark
Jul 20, 2:58 PM MDTHail 1El Paso, CO
Jul 20, 3:00 PM MDTHail 0.75El Paso, CO
Jul 20, 3:05 PM MDTTornado F0El Paso, CO
Jul 20, 3:05 PM MDTTornado F0El Paso, CO

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Fort Carson/Butt, CO (KFCS), launched 12:00Z, 8.8 hours before the alert went out and 64 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, Fort Carson/Butt, CO at 12:00Z on 1990-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 84 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Carson/Butt, CO at 12:00Z on 1990-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 square meters per square second.193958Sfc1 km3 km6 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
84 J/kg
Mixed-layer CIN
-147 J/kg
Mixed-layer LCL
1129 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
122 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
Jul 19, 7:45 PM MDTSevere Thunderstorm WarningGLDEl Paso35 min
Jul 20, 12:09 PM MDTSevere Thunderstorm WarningGLDElbert, Lincoln66 min
Jul 20, 1:05 PM MDTSevere Thunderstorm WarningGLDEl Paso55 min
Jul 20, 1:05 PM MDTSevere Thunderstorm WarningGLDElbert55 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1990Every severe thunderstorm warning in 1990

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.