Alert archive / Colorado / Mesoscale Discussions in 2020
Mesoscale Discussion 852
The Storm Prediction Center issued this mesoscale discussion at Jun 6, 2020, 11:29 AM MDT for 27 counties in Colorado. It was in force for 91 min.
The area
The outline as issued.
The facts
- Issued
- Jun 6, 2020, 11:29 AM MDT (17:29 UTC)
- Expired
- Jun 6, 2020, 1:00 PM MDT
- In force
- 91 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch needed soon
- Chance of a watch
- 95%
All 27 counties
Adams County, CO, Alamosa County, CO, Arapahoe County, CO, Boulder County, CO, Broomfield County, CO, Clear Creek County, CO, Costilla County, CO, Crowley County, CO, Custer County, CO, Denver County, CO, Douglas County, CO, El Paso County, CO, Elbert County, CO, Fremont County, CO, Gilpin County, CO, Huerfano County, CO, Jefferson County, CO, Larimer County, CO, Las Animas County, CO, Lincoln County, CO, Morgan County, CO, Otero County, CO, Park County, CO, Pueblo County, CO, Teller County, CO, Washington County, CO, Weld County, CO
The radar
The Denver radar (KFTG), 41 km from the middle of the area, began a volume at 17:30 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 5.5 hours before the alert went out and 126 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3284 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- -50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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, 7:01 AM MDT | Mesoscale Discussion | SPC | Delta, Dolores, Garfield, Mesa, Moffat, Montezuma and 3 more | 2 hr |
| Jun 6, 9:48 AM MDT | Severe Thunderstorm Watch | SPC | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more | 6 hr |
| 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 |
Nearby
Mesoscale 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.