Alert archive / Colorado / Mesoscale Discussions in 2013
Mesoscale Discussion 1702
The Storm Prediction Center issued this mesoscale discussion at Aug 12, 2013, 2:35 PM MDT for 4 states. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 12, 2013, 2:35 PM MDT (20:35 UTC)
- Expired
- Aug 12, 2013, 5:00 PM MDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 52 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, 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, Cheyenne County, KS, Grant County, KS, Greeley County, KS, Hamilton County, KS, Kearny County, KS, Logan County, KS, Morton County, KS, Rawlins County, KS, Scott County, KS, Sherman County, KS, Stanton County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS, Banner County, NE, Chase County, NE, Cheyenne County, NE, Deuel County, NE, Dundy County, NE, Hitchcock County, NE, Kimball County, NE, Perkins County, NE, Laramie County, WY
The radar
The Denver radar (KFTG), 102 km from the middle of the area, began a volume at 20:37 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 nearest sounding before it
Denver, CO (KDEN), launched 12:00Z, 8.6 hours before the alert went out and 34 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
- 539 J/kg
- Mixed-layer CIN
- -148 J/kg
- Mixed-layer LCL
- 1291 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 1:26 PM MDT | Mesoscale Discussion | SPC | Boyd, Brown, Cherry, Holt, Keya Paha, Rock | 3 hr |
Nearby
Mesoscale Discussions in Colorado, 2013Mesoscale Discussions in Kansas, 2013Mesoscale Discussions in Nebraska, 2013Every mesoscale discussion in 2013
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.