Alert archive / Kansas / Mesoscale Discussions in 2004

Mesoscale Discussion 776

May 20, 2004Baca County, Las Animas County, Prowers County, Colorado; 14 counties in Kansas

The Storm Prediction Center issued this mesoscale discussion at May 20, 2004, 2:19 PM MDT for Baca County, Las Animas County, Prowers County, Colorado; 14 counties in Kansas. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued: May 20, 2004, 2:19 PM MDT (20:19 UTC)
Expired: May 20, 2004, 4:15 PM MDT
In force: 116 min
Issued by: the Storm Prediction Center

Counties Baca County, CO, Las Animas County, CO, Prowers County, CO, Ellis County, KS, Finney County, KS, Gove County, KS, Grant County, KS, Hamilton County, KS, Hodgeman County, KS, Kearny County, KS, Lane County, KS, Ness County, KS, Rush County, KS, Scott County, KS, Stanton County, KS, Trego County, KS, Wichita County, KS

The radar

The Goodland radar (KGLD), 152 km from the middle of the area, began a volume at 20:25 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, 8.3 hours before the alert went out and 236 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1607 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 211 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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.

Issued	Product	Office	Counties	Lasted
May 20, 4:02 PM MDT	Mesoscale Discussion	SPC	Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 9 more	118 min

Nearby

Mesoscale Discussions in Kansas, 2004 Mesoscale Discussions in Colorado, 2004 Every 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.