Alert archive / Colorado / Severe Thunderstorm Watches in 2017
Severe Thunderstorm Watch 446
The Storm Prediction Center issued this severe thunderstorm watch at Aug 10, 2017, 3:52 PM MDT for 5 states. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 10, 2017, 3:52 PM MDT (21:52 UTC)
- Expired
- Aug 10, 2017, 10:55 PM MDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 60 kt
All 51 counties
Adams County, CO, Arapahoe County, CO, Baca County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, Douglas County, CO, El Paso County, CO, Elbert County, CO, Huerfano County, CO, Kiowa County, CO, Kit Carson County, CO, Las Animas County, CO, Lincoln County, CO, Morgan County, CO, Otero County, CO, Prowers County, CO, Pueblo County, CO, Washington County, CO, Finney County, KS, Grant County, KS, Gray County, KS, Greeley County, KS, Hamilton County, KS, Haskell County, KS, Kearny County, KS, Meade County, KS, Morton County, KS, Seward County, KS, Stanton County, KS, Stevens County, KS, Wichita County, KS, Colfax County, NM, Guadalupe County, NM, Harding County, NM, Mora County, NM, Quay County, NM, San Miguel County, NM, Union County, NM, Beaver County, OK, Cimarron County, OK, Texas County, OK, Dallam County, TX, Hansford County, TX, Hartley County, TX, Hutchinson County, TX, Lipscomb County, TX, Moore County, TX, Ochiltree County, TX, Roberts County, TX, Sherman County, TX
The radar
The Pueblo radar (KPUX), 83 km from the middle of the area, began a volume at 21:56 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 20%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 50%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
43 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 3:54 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 51 min |
| Aug 10, 4:01 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 17 min |
| Aug 10, 4:13 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Morgan, Weld | 47 min |
| Aug 10, 4:14 PM MDT | Severe Thunderstorm Warning | ABQ | Harding, Mora, San Miguel | 32 min |
| Aug 10, 4:30 PM MDT | Severe Thunderstorm Warning | PUB | El Paso, Teller | 30 min |
| Aug 10, 4:37 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln, Washington | 38 min |
| Aug 10, 4:43 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 32 min |
| Aug 10, 4:48 PM MDT | Tornado Warning | BOU | Adams, Arapahoe | 27 min |
| Aug 10, 4:55 PM MDT | Severe Thunderstorm Warning | PUB | El Paso, Pueblo | 35 min |
| Aug 10, 5:07 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln, Washington | 25 min |
| Aug 10, 5:07 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 25 min |
| Aug 10, 5:12 PM MDT | Severe Thunderstorm Warning | ABQ | Harding, Mora, San Miguel | 29 min |
| Aug 10, 5:14 PM MDT | Severe Thunderstorm Warning | PUB | Kiowa | 31 min |
| Aug 10, 5:22 PM MDT | Severe Thunderstorm Warning | PUB | Crowley, Kiowa | 38 min |
| Aug 10, 5:24 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 16 min |
| Aug 10, 5:28 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 47 min |
| Aug 10, 5:29 PM MDT | Severe Thunderstorm Warning | PUB | Crowley, El Paso, Pueblo | 46 min |
| Aug 10, 5:43 PM MDT | Tornado Warning | PUB | Bent, Kiowa, Prowers | 32 min |
| Aug 10, 5:57 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Kiowa | 48 min |
| Aug 10, 5:59 PM MDT | Severe Thunderstorm Warning | PUB | Prowers | 46 min |
| Aug 10, 5:59 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas, Otero | 46 min |
| Aug 10, 6:10 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 50 min |
| Aug 10, 6:11 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Kiowa, Prowers | 49 min |
| Aug 10, 6:14 PM MDT | Severe Thunderstorm Warning | PUB | Crowley, Otero | 46 min |
| Aug 10, 6:29 PM MDT | Severe Thunderstorm Warning | DDC | Hamilton, Stanton | 61 min |
| Aug 10, 6:32 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 43 min |
| Aug 10, 6:38 PM MDT | Severe Thunderstorm Warning | AMA | Dallam, Hartley, Oldham | 67 min |
| Aug 10, 6:39 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Prowers | 51 min |
| Aug 10, 6:39 PM MDT | Severe Thunderstorm Warning | DDC | Hamilton | 35 min |
| Aug 10, 6:41 PM MDT | Severe Thunderstorm Warning | PUB | Otero | 34 min |
| Aug 10, 6:55 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Kiowa, Prowers | 36 min |
| Aug 10, 6:57 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Otero | 33 min |
| Aug 10, 7:09 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas, Otero | 36 min |
| Aug 10, 7:09 PM MDT | Severe Thunderstorm Warning | AMA | Cimarron | 45 min |
| Aug 10, 7:13 PM MDT | Severe Thunderstorm Warning | DDC | Hamilton, Stanton | 62 min |
| Aug 10, 7:28 PM MDT | Severe Thunderstorm Warning | PUB | Baca, Bent, Las Animas, Otero | 47 min |
| Aug 10, 7:30 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 45 min |
| Aug 10, 7:45 PM MDT | Severe Thunderstorm Warning | DDC | Morton, Stevens | 45 min |
| Aug 10, 8:02 PM MDT | Severe Thunderstorm Warning | PUB | Baca, Prowers | 43 min |
| Aug 10, 8:09 PM MDT | Severe Thunderstorm Warning | DDC | Stanton | 31 min |
| Aug 10, 8:27 PM MDT | Severe Thunderstorm Warning | DDC | Morton, Stevens | 63 min |
| Aug 10, 9:16 PM MDT | Severe Thunderstorm Warning | AMA | Texas | 59 min |
| Aug 10, 9:44 PM MDT | Severe Thunderstorm Warning | AMA | Beaver | 61 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Denver, CO (KDEN), launched 12:00Z, 9.9 hours before the alert went out and 209 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
- 2 J/kg
- Mixed-layer CIN
- -251 J/kg
- Mixed-layer LCL
- 866 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 2:50 PM MDT | Mesoscale Discussion | SPC | Baca, Bent, Crowley, Huerfano, Kiowa, Las Animas and 3 more | 115 min |
| Aug 9, 6:36 PM MDT | Mesoscale Discussion | SPC | Barber, Comanche, Harper | 84 min |
| Aug 10, 12:42 PM MDT | Mesoscale Discussion | SPC | Harper, Sumner | 2 hr |
| Aug 10, 1:05 PM MDT | Mesoscale Discussion | SPC | Barton, Cloud, Ellis, Ellsworth, Gove, Graham and 15 more | 115 min |
| Aug 10, 1:06 PM MDT | Severe Thunderstorm Watch | SPC | Barber, Comanche, Harper, Sumner | 7 hr |
| Aug 10, 1:27 PM MDT | Severe Thunderstorm Watch | SPC | Allen, Barton, Butler, Chase, Chautauqua, Clay and 38 more | 7 hr |
| Aug 10, 3:53 PM MDT | Mesoscale Discussion | SPC | Barton, Edwards, Ellsworth, Harvey, Kingman, Kiowa and 11 more | 97 min |
| Aug 10, 5:44 PM MDT | Mesoscale Discussion | SPC | Barber, Comanche | 91 min |
| Aug 10, 3:33 PM MDT | Mesoscale Discussion | SPC | Alfalfa, Blaine, Caddo, Canadian, Cleveland, Creek and 19 more | 57 min |
Nearby
Severe Thunderstorm Watches in Colorado, 2017Severe Thunderstorm Watches in Kansas, 2017Severe Thunderstorm Watches in Texas, 2017Every severe thunderstorm watch in 2017
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.