Alert archive / Colorado / Mesoscale Discussions in 2004

Mesoscale Discussion 1934

August 9, 200410 counties in Colorado

The Storm Prediction Center issued this mesoscale discussion at Aug 9, 2004, 4:36 PM MDT for 10 counties in Colorado. It was in force for 54 min.

The area

The outline as issued.

The facts

Issued
Aug 9, 2004, 4:36 PM MDT (22:36 UTC)
Expired
Aug 9, 2004, 5:30 PM MDT
In force
54 min
Issued by
the Storm Prediction Center

Counties Bent County, CO, Crowley County, CO, Douglas County, CO, El Paso County, CO, Elbert County, CO, Kiowa County, CO, Las Animas County, CO, Lincoln County, CO, Otero County, CO, Pueblo County, CO

The radar

The Pueblo radar (KPUX), 53 km from the middle of the area, began a volume at 22:38 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 10.6 hours before the alert went out and 211 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 2004-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 218 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 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 2004-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 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
218 J/kg
Mixed-layer CIN
-241 J/kg
Mixed-layer LCL
1193 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
75 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
Aug 9, 12:03 PM MDTMesoscale DiscussionSPCBaca, Bent, Cheyenne, Crowley, Kiowa, Kit Carson and 6 more87 min
Aug 9, 12:30 PM MDTTornado WatchSPCArapahoe, Baca, Bent, Cheyenne, Crowley, Elbert and 8 more7 hr
Aug 9, 12:50 PM MDTSevere Thunderstorm WatchSPCBaca7 hr
Aug 9, 5:30 PM MDTMesoscale DiscussionSPCBaca60 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.