Alert archive / Colorado / Mesoscale Discussions in 2005

Mesoscale Discussion 1073

May 30, 20059 counties in Colorado; 5 counties in Utah

The Storm Prediction Center issued this mesoscale discussion at May 30, 2005, 9:39 AM MDT for 9 counties in Colorado; 5 counties in Utah. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: May 30, 2005, 9:39 AM MDT (15:39 UTC)
Expired: May 30, 2005, 11:45 AM MDT
In force: 2 hr
Issued by: the Storm Prediction Center

Counties Delta County, CO, Dolores County, CO, Garfield County, CO, Mesa County, CO, Moffat County, CO, Montrose County, CO, Ouray County, CO, Rio Blanco County, CO, San Miguel County, CO, Carbon County, UT, Duchesne County, UT, Grand County, UT, San Juan County, UT, Uintah County, UT

The radar

The Grand Junction radar (KGJX), 100 km from the middle of the area, began a volume at 15:42 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 356May 30, 10:45 AM MDT

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 12:00Z, 3.7 hours before the alert went out and 269 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: 100 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 1001 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: -22 m²/s²
0-3 km storm-relative helicity: 6 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, 10:32 AM MDT	Mesoscale Discussion	SPC	Alamosa, Conejos, Costilla, Huerfano, Las Animas, Mineral and 2 more	118 min
May 30, 10:45 AM MDT	Severe Thunderstorm Watch	SPC	Archuleta, Conejos, Delta, Dolores, Garfield, Gunnison and 15 more	6 hr
May 30, 12:33 PM MDT	Mesoscale Discussion	SPC	Delta, Dolores, Garfield, Gunnison, Hinsdale, La Plata and 9 more	117 min
May 30, 1:30 PM MDT	Tornado Watch	SPC	Baca, Bent, Crowley, Las Animas, Otero, Prowers and 1 more	8 hr
May 30, 4:45 PM MDT	Mesoscale Discussion	SPC	Baca, Bent, Crowley, Kiowa, Las Animas, Otero and 2 more	2 hr
May 30, 4:57 PM MDT	Mesoscale Discussion	SPC	Adams, Arapahoe, Cheyenne, Elbert, El Paso, Kit Carson and 8 more	63 min
May 30, 5:25 PM MDT	Severe Thunderstorm Watch	SPC	Adams, Arapahoe, Elbert, El Paso, Kiowa, Lincoln and 3 more	7 hr
May 30, 6:14 AM MDT	Mesoscale Discussion	SPC	Salt Lake, Utah	91 min

Nearby

Mesoscale Discussions in Colorado, 2005 Mesoscale Discussions in Utah, 2005 Every mesoscale discussion in 2005

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.