Alert archive / Colorado / Mesoscale Discussions in 2014
Mesoscale Discussion 644
The Storm Prediction Center issued this mesoscale discussion at May 21, 2014, 4:17 PM MDT for 6 counties in Colorado; Cheyenne County, Sherman County, Wallace County, Kansas. It was in force for 58 min.
The area
The outline as issued.
The facts
- Issued
- May 21, 2014, 4:17 PM MDT (22:17 UTC)
- Expired
- May 21, 2014, 5:15 PM MDT
- In force
- 58 min
- Issued by
- the Storm Prediction Center
Counties Cheyenne County, CO, Elbert County, CO, Kit Carson County, CO, Lincoln County, CO, Washington County, CO, Yuma County, CO, Cheyenne County, KS, Sherman County, KS, Wallace County, KS
The radar
The Goodland radar (KGLD), 102 km from the middle of the area, began a volume at 22:17 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, 10.3 hours before the alert went out and 70 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
- 268 J/kg
- Mixed-layer CIN
- -75 J/kg
- Mixed-layer LCL
- 786 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 86 m²/s²
- 0-3 km storm-relative helicity
- 158 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.3
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 |
|---|---|---|---|---|
| May 20, 6:02 PM MDT | Mesoscale Discussion | SPC | Cheyenne, Kit Carson, Phillips, Sedgwick, Yuma | 88 min |
| May 20, 6:27 PM MDT | Severe Thunderstorm Watch | SPC | Cheyenne, Kit Carson, Phillips, Sedgwick, Yuma | 4 hr |
| May 20, 8:06 PM MDT | Mesoscale Discussion | SPC | Cheyenne, Kit Carson, Lincoln, Logan, Phillips, Sedgwick and 2 more | 84 min |
| May 21, 12:09 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Broomfield, Denver, Elbert, Morgan and 1 more | 96 min |
| May 21, 12:34 PM MDT | Tornado Watch | SPC | Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 5 more | 8 hr |
| May 21, 1:42 PM MDT | Mesoscale Discussion | SPC | Baca, Bent, Crowley, El Paso, Kiowa, Las Animas and 4 more | 63 min |
| May 21, 1:58 PM MDT | Mesoscale Discussion | SPC | Broomfield, Denver, Jefferson | 62 min |
| May 21, 2:18 PM MDT | Severe Thunderstorm Watch | SPC | Baca, Bent, Crowley, El Paso, Huerfano, Kiowa and 4 more | 4 hr |
| May 21, 4:48 PM MDT | Severe Thunderstorm Watch | SPC | Cheyenne, Kit Carson, Lincoln, Washington, Yuma | 6 hr |
Nearby
Mesoscale Discussions in Colorado, 2014Mesoscale Discussions in Kansas, 2014Every mesoscale discussion in 2014
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.