Alert archive / Colorado / Mesoscale Discussions in 2009

Mesoscale Discussion 901

May 30, 200915 counties in Colorado; 10 counties in Kansas; 5 counties in Wyoming

The Storm Prediction Center issued this mesoscale discussion at May 30, 2009, 4:18 PM MDT for 15 counties in Colorado; 10 counties in Kansas; 5 counties in Wyoming. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued
May 30, 2009, 4:18 PM MDT (22:18 UTC)
Expired
May 30, 2009, 5:45 PM MDT
In force
87 min
Issued by
the Storm Prediction Center
All 30 counties

Adams County, CO, Arapahoe County, CO, Broomfield County, CO, Cheyenne County, CO, Denver County, CO, Douglas County, CO, El Paso County, CO, Elbert County, CO, Kiowa County, CO, Kit Carson County, CO, Lincoln County, CO, Morgan County, CO, Teller County, CO, Washington County, CO, Weld County, CO, Gove County, KS, Greeley County, KS, Kearny County, KS, Lane County, KS, Logan County, KS, Scott County, KS, Sherman County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS, Albany County, WY, Converse County, WY, Goshen County, WY, Laramie County, WY, Platte County, WY

The radar

The Denver radar (KFTG), 103 km from the middle of the area, began a volume at 22:19 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

Rapid City, SD (KUNR), launched 12:00Z, 10.3 hours before the alert went out and 403 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, Rapid City, SD at 12:00Z on 2009-05-30Temperature 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 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Rapid City, SD at 12:00Z on 2009-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -33 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
2081 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
-33 m²/s²
0-3 km storm-relative helicity
4 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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Nearby

Mesoscale Discussions in Colorado, 2009Mesoscale Discussions in Kansas, 2009Mesoscale Discussions in Wyoming, 2009Every 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.