Alert archive / Colorado / Mesoscale Discussions in 2006

Mesoscale Discussion 2313

December 28, 20069 counties in Colorado; Laramie County, Wyoming

The Storm Prediction Center issued this mesoscale discussion at Dec 28, 2006, 5:27 PM MST for 9 counties in Colorado; Laramie County, Wyoming. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Dec 28, 2006, 5:27 PM MST (00:27 UTC)
Expired
Dec 28, 2006, 9:30 PM MST
In force
4 hr
Issued by
the Storm Prediction Center

Counties Boulder County, CO, Broomfield County, CO, Denver County, CO, Douglas County, CO, Fremont County, CO, Gilpin County, CO, Jefferson County, CO, Larimer County, CO, Teller County, CO, Laramie County, WY

The radar

The Denver radar (KFTG), 52 km from the middle of the area, began a volume at 00:28 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, 0.5 hours before the alert went out and 149 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 2006-12-29Temperature 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 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 2006-12-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 133 square meters per square second.193958Sfc1 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
535 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
133 m²/s²
0-3 km storm-relative helicity
488 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 28, 10:40 PM MSTMesoscale DiscussionSPCBaca, Bent, Las Animas, Otero4 hr
Dec 29, 12:01 PM MSTMesoscale DiscussionSPCBaca, Cheyenne, Kiowa, Kit Carson, Prowers, Yuma5 hr

Nearby

Mesoscale Discussions in Colorado, 2006Mesoscale Discussions in Wyoming, 2006Every mesoscale discussion in 2006

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.