Alert archive / Colorado / Mesoscale Discussions in 2018
Mesoscale Discussion 1165
The Storm Prediction Center issued this mesoscale discussion at Jul 26, 2018, 12:49 PM MDT for 15 counties in Colorado; 4 counties in Nebraska; 5 counties in Wyoming. It was in force for 56 min.
The area
The outline as issued.
The facts
- Issued
- Jul 26, 2018, 12:49 PM MDT (18:49 UTC)
- Expired
- Jul 26, 2018, 1:45 PM MDT
- In force
- 56 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 24 counties
Adams County, CO, Arapahoe County, CO, Broomfield County, CO, Crowley County, CO, Denver County, CO, Douglas County, CO, El Paso County, CO, Elbert County, CO, Jefferson County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Pueblo County, CO, Washington County, CO, Weld County, CO, Banner County, NE, Kimball County, NE, Scotts Bluff County, NE, Sioux County, NE, Converse County, WY, Goshen County, WY, Laramie County, WY, Niobrara County, WY, Platte County, WY
The radar
The Cheyenne radar (KCYS), 40 km from the middle of the area, began a volume at 18:50 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, 6.8 hours before the alert went out and 155 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
- 74 J/kg
- Mixed-layer CIN
- -162 J/kg
- Mixed-layer LCL
- 962 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 129 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 |
|---|---|---|---|---|
| Jul 25, 6:40 PM MDT | Mesoscale Discussion | SPC | Baca, Bent, Cheyenne, Crowley, Kiowa, Kit Carson and 5 more | 2 hr |
| Jul 25, 9:39 PM MDT | Mesoscale Discussion | SPC | Baca, Bent, Cheyenne, Crowley, Kiowa, Lincoln and 2 more | 2 hr |
| Jul 26, 1:49 PM MDT | Severe Thunderstorm Watch | SPC | Adams, Arapahoe, Boulder, Broomfield, Cheyenne, Denver and 15 more | 7 hr |
| Jul 25, 6:51 PM MDT | Mesoscale Discussion | SPC | Boone, Burt, Butler, Cass, Clay, Colfax and 23 more | 84 min |
| Jul 26, 4:19 PM MDT | Severe Thunderstorm Watch | SPC | Chase, Dundy, Frontier, Hayes, Hitchcock, Red Willow | 7 hr |
Nearby
Mesoscale Discussions in Colorado, 2018Mesoscale Discussions in Wyoming, 2018Mesoscale Discussions in Nebraska, 2018Every mesoscale discussion in 2018
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.