Alert archive / Colorado / Tornado Warnings in 2002

Tornado Warning 27, NWS Denver/Boulder, CO

August 28, 2002Morgan County, Weld County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Aug 28, 2002, 9:16 PM MDT for Morgan County, Weld County, Colorado. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 28, 2002, 9:16 PM MDT (03:16 UTC)
Expired
Aug 28, 2002, 10:00 PM MDT
In force
44 min
Issued by
NWS Denver/Boulder, CO
Area
Counties, with a storm outline in the text

Counties Morgan County, CO, Weld County, CO

The radar

The Denver radar (KFTG), 79 km from the middle of the area, began a volume at 03:16 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 3.3 hours before the alert went out and 95 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 2002-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 233 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 2002-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -70 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
233 J/kg
Mixed-layer CIN
-169 J/kg
Mixed-layer LCL
2250 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-70 m²/s²
0-3 km storm-relative helicity
-126 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.7

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 28, 7:09 PM MDTFlash Flood WarningBOUWashington3 hr
Aug 28, 7:39 PM MDTSevere Thunderstorm WarningBOUWashington36 min
Aug 28, 7:39 PM MDTTornado WarningBOUWeld51 min
Aug 28, 8:30 PM MDTTornado WarningBOUWeld45 min
Aug 29, 3:12 PM MDTTornado WarningBOUAdams, Arapahoe, Denver, Douglas48 min
Aug 29, 3:27 PM MDTSevere Thunderstorm WarningBOUWeld63 min
Aug 29, 3:56 PM MDTSevere Thunderstorm WarningBOUWeld54 min

Nearby

Tornado Warnings in Colorado, 2002Every tornado warning in 2002Tornadoes in 2002

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; radar from the NEXRAD Level II archive.