Alert archive / Colorado / Severe Thunderstorm Watches in 2007
Severe Thunderstorm Watch 478
The Storm Prediction Center issued this severe thunderstorm watch at Jul 3, 2007, 2:25 PM MDT for 18 counties in Colorado; 12 counties in Kansas; 9 counties in Nebraska. It was in force for 10 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 3, 2007, 2:25 PM MDT (20:25 UTC)
- Expired
- Jul 4, 2007, 12:00 AM MDT
- In force
- 10 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 39 counties
Baca County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, Douglas County, CO, El Paso County, CO, Huerfano County, CO, Kiowa County, CO, Kit Carson County, CO, Las Animas County, CO, Lincoln County, CO, Otero County, CO, Phillips County, CO, Prowers County, CO, Pueblo County, CO, Sedgwick County, CO, Washington County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Gove County, KS, Greeley County, KS, Logan County, KS, Norton County, KS, Rawlins County, KS, Sheridan County, KS, Sherman County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS, Chase County, NE, Dundy County, NE, Frontier County, NE, Hayes County, NE, Hitchcock County, NE, Keith County, NE, Lincoln County, NE, Perkins County, NE, Red Willow County, NE
The radar
The Goodland radar (KGLD), 50 km from the middle of the area, began a volume at 20:28 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
- 5%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
45 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 3:26 PM MDT | Tornado Warning | GLD | Kit Carson | 64 min |
| Jul 3, 3:50 PM MDT | Tornado Warning | GLD | Kit Carson | 55 min |
| Jul 3, 3:53 PM MDT | Severe Thunderstorm Warning | PUB | Pueblo | 56 min |
| Jul 3, 4:06 PM MDT | Tornado Warning | BOU | Elbert, Lincoln | 39 min |
| Jul 3, 4:24 PM MDT | Tornado Warning | GLD | Kit Carson | 66 min |
| Jul 3, 4:41 PM MDT | Tornado Warning | GLD | Kit Carson | 64 min |
| Jul 3, 4:47 PM MDT | Tornado Warning | BOU | Elbert, Lincoln | 43 min |
| Jul 3, 5:12 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 63 min |
| Jul 3, 5:23 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 67 min |
| Jul 3, 5:44 PM MDT | Tornado Warning | GLD | Cheyenne, Kit Carson | 61 min |
| Jul 3, 5:58 PM MDT | Severe Thunderstorm Warning | PUB | Las Animas | 8 min |
| Jul 3, 6:16 PM MDT | Severe Thunderstorm Warning | PUB | Kiowa | 67 min |
| Jul 3, 6:18 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 57 min |
| Jul 3, 6:27 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 43 min |
| Jul 3, 6:33 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Jefferson | 42 min |
| Jul 3, 6:33 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 57 min |
| Jul 3, 6:46 PM MDT | Tornado Warning | PUB | Kiowa | 36 min |
| Jul 3, 6:54 PM MDT | Flash Flood Warning | BOU | Douglas, Jefferson | 2 hr |
| Jul 3, 6:55 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne | 65 min |
| Jul 3, 6:56 PM MDT | Severe Thunderstorm Warning | PUB | El Paso, Teller | 64 min |
| Jul 3, 7:08 PM MDT | Tornado Warning | GLD | Yuma | 29 min |
| Jul 3, 7:14 PM MDT | Severe Thunderstorm Warning | PUB | El Paso | 55 min |
| Jul 3, 7:19 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 41 min |
| Jul 3, 7:21 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 54 min |
| Jul 3, 7:28 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 62 min |
| Jul 3, 7:32 PM MDT | Severe Thunderstorm Warning | LBF | Chase, Hayes | 58 min |
| Jul 3, 7:41 PM MDT | Severe Thunderstorm Warning | LBF | Lincoln | 64 min |
| Jul 3, 7:44 PM MDT | Severe Thunderstorm Warning | GLD | Dundy, Hitchcock | 61 min |
| Jul 3, 8:04 PM MDT | Severe Thunderstorm Warning | LBF | Lincoln | 56 min |
| Jul 3, 8:17 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 58 min |
| Jul 3, 8:23 PM MDT | Severe Thunderstorm Warning | LBF | Keith, Perkins | 67 min |
| Jul 3, 8:38 PM MDT | Severe Thunderstorm Warning | PUB | Bent, Otero | 82 min |
| Jul 3, 8:43 PM MDT | Severe Thunderstorm Warning | LBF | Lincoln | 62 min |
| Jul 3, 8:47 PM MDT | Tornado Warning | PUB | Bent | 58 min |
| Jul 3, 8:55 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 35 min |
| Jul 3, 9:22 PM MDT | Severe Thunderstorm Warning | LBF | Chase, Hayes, Perkins | 53 min |
| Jul 3, 9:28 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 31 min |
| Jul 3, 9:33 PM MDT | Severe Thunderstorm Warning | BOU | Phillips, Sedgwick | 42 min |
| Jul 3, 9:40 PM MDT | Severe Thunderstorm Warning | LBF | Frontier, Lincoln | 65 min |
| Jul 3, 9:44 PM MDT | Tornado Warning | PUB | Bent, Prowers | 63 min |
| Jul 3, 10:04 PM MDT | Flash Flood Warning | LBF | Lincoln, Perkins | 3 hr |
| Jul 3, 10:08 PM MDT | Severe Thunderstorm Warning | LBF | Chase, Perkins | 67 min |
| Jul 3, 11:04 PM MDT | Severe Thunderstorm Warning | PUB | Prowers | 28 min |
| Jul 3, 11:20 PM MDT | Severe Thunderstorm Warning | GLD | Decatur | 53 min |
| Jul 3, 11:52 PM MDT | Severe Thunderstorm Warning | GLD | Norton | 25 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
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 8.4 hours before the alert went out and 212 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
- 554 J/kg
- Mixed-layer CIN
- -647 J/kg
- Mixed-layer LCL
- 1266 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -116 m²/s²
- 0-3 km storm-relative helicity
- -65 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 |
|---|---|---|---|---|
| Jul 3, 1:48 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Bent, Cheyenne, Crowley, Elbert and 12 more | 117 min |
| Jul 2, 8:19 PM MDT | Mesoscale Discussion | SPC | Banner, Box Butte, Cheyenne, Dawes, Kimball, Morrill and 3 more | 86 min |
| Jul 3, 2:36 PM MDT | Mesoscale Discussion | SPC | Cedar, Dakota, Dixon, Knox, Pierce, Thurston and 1 more | 84 min |
| Jul 3, 2:59 PM MDT | Tornado Watch | SPC | Antelope, Boone, Burt, Cedar, Colfax, Cuming and 11 more | 8 hr |
| Jul 3, 5:55 PM MDT | Mesoscale Discussion | SPC | Antelope, Boone, Burt, Cedar, Colfax, Cuming and 12 more | 95 min |
Nearby
Severe Thunderstorm Watches in Colorado, 2007Severe Thunderstorm Watches in Kansas, 2007Severe Thunderstorm Watches in Nebraska, 2007Every severe thunderstorm watch in 2007
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.