Alert archive / Utah / Mesoscale Discussions in 2020
Mesoscale Discussion 849
The Storm Prediction Center issued this mesoscale discussion at Jun 6, 2020, 7:01 AM MDT for 9 counties in Colorado; 12 counties in Utah. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 6, 2020, 7:01 AM MDT (13:01 UTC)
- Expired
- Jun 6, 2020, 9:30 AM MDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch likely
- Chance of a watch
- 80%
All 21 counties
Delta County, CO, Dolores County, CO, Garfield County, CO, Mesa County, CO, Moffat County, CO, Montezuma County, CO, Montrose County, CO, Rio Blanco County, CO, San Miguel County, CO, Carbon County, UT, Daggett County, UT, Duchesne County, UT, Emery County, UT, Garfield County, UT, Grand County, UT, San Juan County, UT, Sanpete County, UT, Uintah County, UT, Utah County, UT, Wasatch County, UT, Wayne County, UT
The radar
The Grand Junction radar (KGJX), 127 km from the middle of the area, began a volume at 13:04 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.
The nearest sounding before it
Grand Junction, CO (KGJT), launched 12:00Z, 1.0 hours before the alert went out and 105 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.
- Mixed-layer CAPE
- 10 J/kg
- Mixed-layer CIN
- -173 J/kg
- Mixed-layer LCL
- 1157 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 129 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 6, 9:48 AM MDT | Severe Thunderstorm Watch | SPC | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more | 6 hr |
| Jun 6, 11:29 AM MDT | Mesoscale Discussion | SPC | Adams, Alamosa, Arapahoe, Boulder, Broomfield, Clear Creek and 21 more | 91 min |
| Jun 6, 12:21 PM MDT | Severe Thunderstorm Watch | SPC | Adams, Alamosa, Arapahoe, Boulder, Broomfield, Chaffee and 33 more | 8 hr |
| Jun 6, 5:14 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Cheyenne, Crowley, Elbert, El Paso and 11 more | 2 hr |
| Jun 5, 6:24 PM MDT | Mesoscale Discussion | SPC | Davis, Duchesne, Morgan, Rich, Salt Lake, Summit and 3 more | 96 min |
Nearby
Mesoscale Discussions in Utah, 2020Mesoscale Discussions in Colorado, 2020Every mesoscale discussion in 2020
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.