Alert archive / Colorado / Mesoscale Discussions in 2003

Mesoscale Discussion 1153

May 30, 200313 counties in Colorado; 4 counties in Kansas; Laramie County, Wyoming

The Storm Prediction Center issued this mesoscale discussion at May 30, 2003, 1:20 PM MDT for 13 counties in Colorado; 4 counties in Kansas; Laramie County, Wyoming. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: May 30, 2003, 1:20 PM MDT (19:20 UTC)
Expired: May 30, 2003, 3:45 PM MDT
In force: 2 hr
Issued by: the Storm Prediction Center

Counties Adams County, CO, Arapahoe County, CO, Broomfield County, CO, Denver County, CO, Douglas County, CO, Elbert County, CO, Jefferson County, CO, Kit Carson County, CO, Logan County, CO, Morgan County, CO, Washington County, CO, Weld County, CO, Yuma County, CO, Cheyenne County, KS, Sherman County, KS, Thomas County, KS, Wallace County, KS, Laramie County, WY

The radar

The Goodland radar (KGLD), 121 km from the middle of the area, began a volume at 19:18 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 443May 30, 4:05 PM MDT

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 7.3 hours before the alert went out and 27 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: 2 J/kg
Mixed-layer CIN: -397 J/kg
Mixed-layer LCL: 2902 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 11 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
May 30, 4:05 PM MDT	Severe Thunderstorm Watch	SPC	Adams, Arapahoe, Bent, Broomfield, Cheyenne, Crowley and 15 more	6 hr
May 29, 8:25 PM MDT	Mesoscale Discussion	SPC	Big Horn, Fremont, Hot Springs, Johnson, Natrona, Park and 3 more	65 min
May 30, 1:06 PM MDT	Mesoscale Discussion	SPC	Lincoln	2 hr

Nearby

Mesoscale Discussions in Colorado, 2003 Mesoscale Discussions in Kansas, 2003 Mesoscale Discussions in Wyoming, 2003 Every mesoscale discussion in 2003

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.