Alert archive / Colorado / Mesoscale Discussions in 2020
Mesoscale Discussion 1213
The Storm Prediction Center issued this mesoscale discussion at Jul 13, 2020, 2:08 PM MDT for 21 counties in Colorado; 4 counties in Kansas; 12 counties in Nebraska. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 13, 2020, 2:08 PM MDT (20:08 UTC)
- Expired
- Jul 13, 2020, 4:15 PM MDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch likely
- Chance of a watch
- 95%
All 37 counties
Adams County, CO, Arapahoe County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, El Paso County, CO, Elbert County, CO, Kiowa County, CO, Kit Carson 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, Washington County, CO, Weld County, CO, Yuma County, CO, Cheyenne County, KS, Greeley County, KS, Sherman County, KS, Wallace County, KS, Arthur County, NE, Banner County, NE, Chase County, NE, Cheyenne County, NE, Deuel County, NE, Dundy County, NE, Garden County, NE, Keith County, NE, Kimball County, NE, Morrill County, NE, Perkins County, NE, Scotts Bluff County, NE
The radar
The Denver radar (KFTG), 116 km from the middle of the area, began a volume at 20:11 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, 8.1 hours before the alert went out and 38 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
- 34 J/kg
- Mixed-layer CIN
- -261 J/kg
- Mixed-layer LCL
- 3370 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 40 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 13, 12:39 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Boulder, Broomfield, Denver, Larimer and 2 more | 2 hr |
| Jul 13, 2:36 PM MDT | Severe Thunderstorm Watch | SPC | Baca, Bent, Cheyenne, Crowley, Kiowa, Kit Carson and 9 more | 9 hr |
| Jul 13, 5:41 PM MDT | Mesoscale Discussion | SPC | Yuma | 2 hr |
| Jul 12, 7:11 PM MDT | Mesoscale Discussion | SPC | Finney, Grant, Gray, Hamilton, Haskell, Kearny and 6 more | 64 min |
| Jul 12, 7:32 PM MDT | Severe Thunderstorm Watch | SPC | Clark, Finney, Ford, Grant, Gray, Hamilton and 10 more | 6 hr |
| Jul 12, 9:55 PM MDT | Mesoscale Discussion | SPC | Barber, Clark, Comanche, Edwards, Ford, Kiowa and 4 more | 2 hr |
Nearby
Mesoscale Discussions in Colorado, 2020Mesoscale Discussions in Nebraska, 2020Mesoscale Discussions in Kansas, 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.