Alert archive / Colorado / Mesoscale Discussions in 2012
Mesoscale Discussion 1999
The Storm Prediction Center issued this mesoscale discussion at Sep 27, 2012, 2:09 PM MDT for 4 states. It was in force for 66 min.
The area
The outline as issued.
The facts
- Issued
- Sep 27, 2012, 2:09 PM MDT (20:09 UTC)
- Expired
- Sep 27, 2012, 3:15 PM MDT
- In force
- 66 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 36 counties
Adams County, CO, Arapahoe County, CO, Baca County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, Denver County, CO, Douglas 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, Washington County, CO, Weld County, CO, Yuma County, CO, Colfax County, NM, Curry County, NM, De Baca County, NM, Guadalupe County, NM, Harding County, NM, Mora County, NM, Quay County, NM, San Miguel County, NM, Union County, NM, Cimarron County, OK, Dallam County, TX, Hartley County, TX, Oldham County, TX
The radar
The Pueblo radar (KPUX), 62 km from the middle of the area, began a volume at 20:12 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 (KDNR), launched 12:00Z, 8.2 hours before the alert went out and 215 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
- 50 J/kg
- Mixed-layer CIN
- -111 J/kg
- Mixed-layer LCL
- 1041 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 81 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 |
|---|---|---|---|---|
| Sep 27, 4:59 PM MDT | Severe Thunderstorm Watch | SPC | Baca, Bent, Crowley, Kiowa, Las Animas, Otero and 1 more | 7 hr |
| Sep 26, 6:17 PM MDT | Mesoscale Discussion | SPC | Alfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 19 more | 58 min |
| Sep 26, 7:08 PM MDT | Mesoscale Discussion | SPC | Creek, Haskell, Hughes, Latimer, LeFlore, Lincoln and 7 more | 97 min |
| Sep 26, 9:29 PM MDT | Mesoscale Discussion | SPC | Beaver, Ellis, Harper, Woodward | 61 min |
| Sep 27, 1:17 PM MDT | Mesoscale Discussion | SPC | Brown, Callahan, Coke, Coleman, Comanche, Crane and 22 more | 58 min |
Nearby
Mesoscale Discussions in Colorado, 2012Mesoscale Discussions in New Mexico, 2012Mesoscale Discussions in Texas, 2012Every mesoscale discussion in 2012
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.