Alert archive / Colorado / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 129, NWS Denver/Boulder, CO

August 12, 1993Jefferson County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Aug 12, 1993, 12:53 PM MDT for Jefferson County, Colorado. It was in force for 22 min.

The area

The counties it named.

The facts

Issued
Aug 12, 1993, 12:53 PM MDT (18:53 UTC)
Expired
Aug 12, 1993, 1:15 PM MDT
In force
22 min
Issued by
NWS Denver/Boulder, CO
Area
Whole counties

County Jefferson County, CO

The nearest sounding before it

Fort Carson/Butt, CO (KFCS), launched 12:00Z, 6.9 hours before the alert went out and 111 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 1993-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 155 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 1993-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 229 square meters per square second.1939Sfc1 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
155 J/kg
Mixed-layer CIN
-247 J/kg
Mixed-layer LCL
1551 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
229 m²/s²
0-3 km storm-relative helicity
263 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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

IssuedProductOfficeCountiesLasted
Aug 12, 12:53 PM MDTSevere Thunderstorm WarningBOUDouglas37 min
Aug 12, 1:33 PM MDTSevere Thunderstorm WarningBOUDouglas27 min
Aug 12, 3:40 PM MDTSevere Thunderstorm WarningBOUPark30 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1993Every severe thunderstorm warning in 1993

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.