Alert archive / Colorado / Mesoscale Discussions in 2008

Mesoscale Discussion 971

May 22, 200816 counties in Colorado

The Storm Prediction Center issued this mesoscale discussion at May 22, 2008, 12:34 PM MDT for 16 counties in Colorado. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued: May 22, 2008, 12:34 PM MDT (18:34 UTC)
Expired: May 22, 2008, 2:00 PM MDT
In force: 86 min
Issued by: the Storm Prediction Center

Counties Adams County, CO, Arapahoe County, CO, Broomfield County, CO, Cheyenne County, CO, Denver County, CO, Douglas County, CO, Elbert County, CO, Jefferson County, CO, Kit Carson County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Phillips County, CO, Washington County, CO, Weld County, CO, Yuma County, CO

The radar

The Denver radar (KFTG), 67 km from the middle of the area, began a volume at 18:34 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, 6.6 hours before the alert went out and 56 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: 392 J/kg
Mixed-layer CIN: -129 J/kg
Mixed-layer LCL: 1287 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: -103 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -1.2

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 21, 6:17 PM MDT	Mesoscale Discussion	SPC	Baca	118 min
May 21, 7:40 PM MDT	Mesoscale Discussion	SPC	Cheyenne, Kiowa, Kit Carson, Logan, Morgan, Phillips and 4 more	65 min
May 21, 9:35 PM MDT	Mesoscale Discussion	SPC	Kit Carson, Logan, Phillips, Sedgwick, Yuma	25 min
May 22, 11:06 AM MDT	Mesoscale Discussion	SPC	Adams, Arapahoe, Denver, Kit Carson, Logan, Morgan and 4 more	24 min
May 22, 11:25 AM MDT	Tornado Watch	SPC	Adams, Arapahoe, Boulder, Broomfield, Cheyenne, Denver and 14 more	9 hr
May 22, 4:50 PM MDT	Mesoscale Discussion	SPC	Adams, Arapahoe, Broomfield, Cheyenne, Denver, Douglas and 10 more	85 min

Nearby

Mesoscale Discussions in Colorado, 2008 Every mesoscale discussion in 2008

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.