Alert archive / Colorado / Mesoscale Discussions in 2004

Mesoscale Discussion 1796

July 29, 20049 counties in Colorado

The Storm Prediction Center issued this mesoscale discussion at Jul 29, 2004, 5:15 PM MDT for 9 counties in Colorado. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued
Jul 29, 2004, 5:15 PM MDT (23:15 UTC)
Expired
Jul 29, 2004, 6:15 PM MDT
In force
60 min
Issued by
the Storm Prediction Center

Counties Baca County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, Kiowa County, CO, Las Animas County, CO, Otero County, CO, Prowers County, CO, Pueblo County, CO

The radar

The Pueblo radar (KPUX), 114 km from the middle of the area, began a volume at 23:17 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 12:00Z, 11.3 hours before the alert went out and 265 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 12:00Z on 2004-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 10 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 12:00Z on 2004-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.1939Sfc1 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
10 J/kg
Mixed-layer CIN
-327 J/kg
Mixed-layer LCL
1334 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
84 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
Jul 29, 12:53 PM MDTMesoscale DiscussionSPCLogan, Phillips, Sedgwick3 hr
Jul 29, 1:55 PM MDTSevere Thunderstorm WatchSPCAdams, Arapahoe, Elbert, Kit Carson, Logan, Morgan and 5 more6 hr
Jul 29, 3:50 PM MDTMesoscale DiscussionSPCBaca, Bent, Cheyenne, Crowley, Huerfano, Kiowa and 5 more25 min
Jul 29, 4:30 PM MDTMesoscale DiscussionSPCAdams, Arapahoe, Elbert, Kit Carson, Logan, Morgan and 5 more30 min

Nearby

Mesoscale Discussions in Colorado, 2004Every mesoscale discussion in 2004

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.