Alert archive / Colorado / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 634
The Storm Prediction Center issued this severe thunderstorm watch at Jul 14, 2004, 4:35 PM MDT for 5 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 14, 2004, 4:35 PM MDT (22:35 UTC)
- Expired
- Jul 14, 2004, 10:00 PM MDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 40 counties
Adams County, CO, Arapahoe County, CO, Broomfield County, CO, Denver County, CO, Douglas County, CO, Elbert County, CO, Kit Carson County, CO, Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO, Yuma County, CO, Carter County, MT, Powder River County, MT, Banner County, NE, Box Butte County, NE, Cheyenne County, NE, Dawes County, NE, Deuel County, NE, Kimball County, NE, Morrill County, NE, Scotts Bluff County, NE, Sioux County, NE, Butte County, SD, Custer County, SD, Fall River County, SD, Harding County, SD, Lawrence County, SD, Meade County, SD, Oglala Lakota County, SD, Pennington County, SD, Campbell County, WY, Crook County, WY, Goshen County, WY, Laramie County, WY, Niobrara County, WY, Platte County, WY, Weston County, WY
The radar
The Rapid City radar (KUDX), 132 km from the middle of the area, began a volume at 22:34 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.
Warnings issued inside it
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 4:45 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 60 min |
| Jul 14, 5:39 PM MDT | Severe Thunderstorm Warning | BOU | Douglas | 51 min |
| Jul 14, 6:46 PM MDT | Severe Thunderstorm Warning | UNR | Harding | 59 min |
| Jul 14, 7:40 PM MDT | Severe Thunderstorm Warning | UNR | Harding | 50 min |
| Jul 14, 7:45 PM MDT | Severe Thunderstorm Warning | UNR | Butte | 75 min |
| Jul 14, 8:22 PM MDT | Tornado Warning | UNR | Butte | 53 min |
| Jul 14, 8:46 PM MDT | Severe Thunderstorm Warning | UNR | Harding | 59 min |
| Jul 14, 8:54 PM MDT | Tornado Warning | UNR | Butte | 51 min |
| Jul 14, 9:14 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 61 min |
| Jul 14, 9:38 PM MDT | Severe Thunderstorm Warning | UNR | Meade | 67 min |
| Jul 14, 9:40 PM MDT | Severe Thunderstorm Warning | UNR | Harding | 65 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 (KDNR), launched 12:00Z, 10.6 hours before the alert went out and 360 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
- 680 J/kg
- Mixed-layer CIN
- -351 J/kg
- Mixed-layer LCL
- 1429 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -30 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 6:15 PM MDT | Mesoscale Discussion | SPC | Logan, Sedgwick | 90 min |
| Jul 14, 5:17 PM MDT | Mesoscale Discussion | SPC | Daniels, Dawson, Fallon, Richland, Roosevelt, Sheridan and 1 more | 58 min |
| Jul 14, 5:40 PM MDT | Severe Thunderstorm Watch | SPC | Daniels, Richland, Roosevelt, Sheridan, Wibaux | 6 hr |
| Jul 13, 8:51 PM MDT | Mesoscale Discussion | SPC | Box Butte, Cherry, Dawes, Hooker, Sheridan, Sioux | 84 min |
| Jul 13, 10:52 PM MDT | Mesoscale Discussion | SPC | Blaine, Boyd, Brown, Cherry, Garfield, Grant and 10 more | 83 min |
| Jul 14, 3:53 PM MDT | Mesoscale Discussion | SPC | Arthur, Banner, Box Butte, Cherry, Cheyenne, Dawes and 8 more | 2 hr |
Nearby
Severe Thunderstorm Watches in Colorado, 2004Severe Thunderstorm Watches in Nebraska, 2004Severe Thunderstorm Watches in South Dakota, 2004Every severe thunderstorm watch in 2004
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.