Alert archive / Colorado / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 78, NWS Denver/Boulder, CO

July 1, 1992Morgan County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 1, 1992, 6:35 PM MDT for Morgan County, Colorado. It was in force for 40 min.

The area

The counties it named.

The facts

Issued
Jul 1, 1992, 6:35 PM MDT (00:35 UTC)
Expired
Jul 1, 1992, 7:15 PM MDT
In force
40 min
Issued by
NWS Denver/Boulder, CO
Area
Whole counties

County Morgan County, CO

The nearest sounding before it

Denver, CO (KDEN), launched 00:00Z, 0.6 hours before the alert went out and 66 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 1992-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 620 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 1992-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 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
620 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
1005 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
411 m²/s²
Significant tornado parameter
0.7
Supercell composite
6.4

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.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 1, 5:06 PM MDT, 1 hour 29 minutes before
COZ011-012-020000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
510 PM MDT WED JUL 01 1992

...STRONG THUNDERSTORM SOUTHEAST OF PLATTEVILLE...

AT 5 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG
AND RAPIDLY DEVELOPING THUNDERSTORM SOUTHEAST OF PLATTEVILLE OR ABOUT 30
MILES SOUTHEAST OF FORT COLLINS.  THE STORM WAS MOVING TO THE EAST AT
ABOUT 10 MPH.

HAIL...STRONG WINDS AND VERY HEAVY RAIN WILL ACCOMPANY THIS STORM AS IT
MOVES ACROSS SOUTH CENTRAL WELD COUNTY NORTH OF HUDSON OVER THE NEXT 30
MINUTES.

MOVE TO A PLACE OF SAFETY IF THREATENING WEATHER APPROACHES.

ET

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 1, 6:04 PM MDTSevere Thunderstorm WarningBOUAdams, Weld36 min
Jul 1, 6:35 PM MDTSevere Thunderstorm WarningBOUWeld20 min
Jul 1, 7:03 PM MDTTornado WarningBOUWashington42 min
Jul 1, 7:39 PM MDTTornado WarningBOUWashington51 min
Jul 1, 8:24 PM MDTSevere Thunderstorm WarningBOUYuma51 min
Jul 1, 9:13 PM MDTSevere Thunderstorm WarningBOUYuma47 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1992Every severe thunderstorm warning in 1992

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.