Alert archive / Colorado / Mesoscale Discussions in 2017
Mesoscale Discussion 662
The Storm Prediction Center issued this mesoscale discussion at May 8, 2017, 12:01 PM MDT for 30 counties in Colorado. It was in force for 89 min.
The area
The outline as issued.
The facts
- Issued
- May 8, 2017, 12:01 PM MDT (18:01 UTC)
- Expired
- May 8, 2017, 1:30 PM MDT
- In force
- 89 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 30 counties
Adams County, CO, Arapahoe County, CO, Baca County, CO, Bent County, CO, Boulder County, CO, Broomfield County, CO, Cheyenne County, CO, Crowley County, CO, Denver County, CO, Douglas County, CO, El Paso County, CO, Elbert County, CO, Huerfano County, CO, Jefferson County, CO, Kiowa County, CO, Kit Carson County, CO, Larimer County, CO, Las Animas County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Otero County, CO, Phillips County, CO, Prowers County, CO, Pueblo County, CO, Sedgwick County, CO, Teller County, CO, Washington County, CO, Weld County, CO, Yuma County, CO
The radar
The Pueblo radar (KPUX), 23 km from the middle of the area, began a volume at 18:03 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 (KDEN), launched 12:00Z, 6.0 hours before the alert went out and 156 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
- 2189 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 72 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 |
|---|---|---|---|---|
| May 8, 12:35 PM MDT | Severe Thunderstorm Watch | SPC | Adams, Arapahoe, Bent, Boulder, Broomfield, Cheyenne and 22 more | 7 hr |
| May 8, 2:59 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Bent, Boulder, Broomfield, Cheyenne and 27 more | 91 min |
Nearby
Mesoscale Discussions in Colorado, 2017Every mesoscale discussion in 2017
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.