Alert archive / Kansas / Mesoscale Discussions in 2009

Mesoscale Discussion 1990

September 3, 20094 counties in Colorado; 12 counties in Kansas

The Storm Prediction Center issued this mesoscale discussion at Sep 3, 2009, 2:43 PM MDT for 4 counties in Colorado; 12 counties in Kansas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Sep 3, 2009, 2:43 PM MDT (20:43 UTC)
Expired: Sep 3, 2009, 4:45 PM MDT
In force: 2 hr
Issued by: the Storm Prediction Center

Counties Baca County, CO, Bent County, CO, Kiowa County, CO, Prowers County, CO, Finney County, KS, Gove County, KS, Grant County, KS, Greeley County, KS, Hamilton County, KS, Haskell County, KS, Kearny County, KS, Lane County, KS, Logan County, KS, Scott County, KS, Stanton County, KS, Wichita County, KS

The radar

The Goodland radar (KGLD), 115 km from the middle of the area, began a volume at 20:44 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

Dodge City, (KDDC), launched 12:00Z, 8.7 hours before the alert went out and 176 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: 46 J/kg
Mixed-layer CIN: -414 J/kg
Mixed-layer LCL: 769 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 46 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.

Issued	Product	Office	Counties	Lasted
Sep 3, 1:24 PM MDT	Mesoscale Discussion	SPC	Cloud, Jewell, Republic, Washington	2 hr
Sep 3, 4:07 PM MDT	Mesoscale Discussion	SPC	Clay, Cloud, Dickinson, Ellsworth, Geary, Jewell and 12 more	83 min
Sep 3, 4:36 PM MDT	Severe Thunderstorm Watch	SPC	Barton, Dickinson, Ellsworth, Harvey, Lincoln, McPherson and 6 more	6 hr

Nearby

Mesoscale Discussions in Kansas, 2009 Mesoscale Discussions in Colorado, 2009 Every mesoscale discussion in 2009

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.