Alert archive / Colorado / Severe Thunderstorm Watches in 2006
Severe Thunderstorm Watch 751
The Storm Prediction Center issued this severe thunderstorm watch at Aug 26, 2006, 1:14 PM MDT for 26 counties in Colorado; 11 counties in Utah; Carbon County, Sweetwater County, Uinta County, Wyoming. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 26, 2006, 1:14 PM MDT (19:14 UTC)
- Expired
- Aug 26, 2006, 8:00 PM MDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 40 counties
Chaffee County, CO, Delta County, CO, Dolores County, CO, Eagle County, CO, Garfield County, CO, Grand County, CO, Gunnison County, CO, Hinsdale County, CO, Jackson County, CO, La Plata County, CO, Lake County, CO, Mesa County, CO, Mineral County, CO, Moffat County, CO, Montezuma County, CO, Montrose County, CO, Ouray County, CO, Park County, CO, Pitkin County, CO, Rio Blanco County, CO, Rio Grande County, CO, Routt County, CO, Saguache County, CO, San Juan County, CO, San Miguel County, CO, Summit County, CO, Carbon County, UT, Daggett County, UT, Duchesne County, UT, Emery County, UT, Garfield County, UT, Grand County, UT, San Juan County, UT, Summit County, UT, Uintah County, UT, Wasatch County, UT, Wayne County, UT, Carbon County, WY, Sweetwater County, WY, Uinta County, WY
The radar
The Grand Junction radar (KGJX), 106 km from the middle of the area, began a volume at 19:16 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
- 10%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 40%
Warnings issued inside it
15 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 1:24 PM MDT | Severe Thunderstorm Warning | SLC | Duchesne | 66 min |
| Aug 26, 1:27 PM MDT | Severe Thunderstorm Warning | GJT | Montezuma | 33 min |
| Aug 26, 1:46 PM MDT | Severe Thunderstorm Warning | SLC | Emery | 29 min |
| Aug 26, 1:54 PM MDT | Severe Thunderstorm Warning | GJT | Routt | 52 min |
| Aug 26, 1:57 PM MDT | Flash Flood Warning | SLC | Emery, Wayne | 3 hr |
| Aug 26, 2:00 PM MDT | Severe Thunderstorm Warning | CYS | Carbon | 2 min |
| Aug 26, 2:14 PM MDT | Severe Thunderstorm Warning | SLC | Emery | 32 min |
| Aug 26, 2:15 PM MDT | Severe Thunderstorm Warning | CYS | Carbon | 45 min |
| Aug 26, 2:15 PM MDT | Severe Thunderstorm Warning | RIW | Sweetwater | 60 min |
| Aug 26, 2:53 PM MDT | Flash Flood Warning | SLC | Emery, Wayne | 3 hr |
| Aug 26, 3:06 PM MDT | Severe Thunderstorm Warning | SLC | Carbon | 48 min |
| Aug 26, 3:13 PM MDT | Severe Thunderstorm Warning | RIW | Sweetwater | 46 min |
| Aug 26, 3:35 PM MDT | Severe Thunderstorm Warning | GJT | Mesa | 40 min |
| Aug 26, 3:47 PM MDT | Severe Thunderstorm Warning | GJT | Uintah | 43 min |
| Aug 26, 4:17 PM MDT | Tornado Warning | GJT | Moffat | 13 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
Grand Junction, CO (KGJT), launched 12:00Z, 7.2 hours before the alert went out and 80 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1774 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 173 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 25, 6:55 PM MDT | Mesoscale Discussion | SPC | Garfield, Moffat, Rio Blanco | 95 min |
| Aug 26, 12:43 PM MDT | Mesoscale Discussion | SPC | Delta, Dolores, Garfield, Mesa, Moffat, Montezuma and 4 more | 2 hr |
| Aug 26, 4:47 PM MDT | Mesoscale Discussion | SPC | Adams, Alamosa, Arapahoe, Archuleta, Boulder, Broomfield and 38 more | 88 min |
Nearby
Severe Thunderstorm Watches in Colorado, 2006Severe Thunderstorm Watches in Utah, 2006Severe Thunderstorm Watches in Wyoming, 2006Every severe thunderstorm watch in 2006
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.