Alert archive / Colorado / Mesoscale Discussions in 2007

Mesoscale Discussion 903

May 27, 200714 counties in Colorado; Cheyenne County, Decatur County, Rawlins County, Kansas; 9 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at May 27, 2007, 1:26 PM MDT for 14 counties in Colorado; Cheyenne County, Decatur County, Rawlins County, Kansas; 9 counties in Nebraska. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 27, 2007, 1:26 PM MDT (19:26 UTC)
Expired
May 27, 2007, 3:30 PM MDT
In force
2 hr
Issued by
the Storm Prediction Center
All 26 counties

Adams County, CO, Arapahoe County, CO, Broomfield County, CO, Denver County, CO, Douglas County, CO, Elbert County, CO, Jefferson County, CO, Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Rawlins County, KS, Chase County, NE, Cheyenne County, NE, Deuel County, NE, Dundy County, NE, Hayes County, NE, Hitchcock County, NE, Morrill County, NE, Perkins County, NE, Red Willow County, NE

The radar

The Denver radar (KFTG), 132 km from the middle of the area, began a volume at 19:30 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, 7.4 hours before the alert went out and 72 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 2007-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 11 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 2007-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 70 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
11 J/kg
Mixed-layer CIN
-286 J/kg
Mixed-layer LCL
1987 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
70 m²/s²
0-3 km storm-relative helicity
89 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, 2007Mesoscale Discussions in Nebraska, 2007Mesoscale Discussions in Kansas, 2007Every mesoscale discussion in 2007

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.