Alert archive / Wyoming / Mesoscale Discussions in 2008
Mesoscale Discussion 1897
The Storm Prediction Center issued this mesoscale discussion at Jul 24, 2008, 1:31 PM MDT for Big Horn County, Carter County, Powder River County, Montana; 4 counties in South Dakota; 11 counties in Wyoming. It was in force for 59 min.
The area
The outline as issued.
The facts
- Issued
- Jul 24, 2008, 1:31 PM MDT (19:31 UTC)
- Expired
- Jul 24, 2008, 2:30 PM MDT
- In force
- 59 min
- Issued by
- the Storm Prediction Center
Counties Big Horn County, MT, Carter County, MT, Powder River County, MT, Butte County, SD, Custer County, SD, Fall River County, SD, Lawrence County, SD, Big Horn County, WY, Campbell County, WY, Converse County, WY, Crook County, WY, Hot Springs County, WY, Johnson County, WY, Natrona County, WY, Niobrara County, WY, Sheridan County, WY, Washakie County, WY, Weston County, WY
The radar
The Riverton/Lander radar (KRIW), 228 km from the middle of the area, began a volume at 19:32 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
Rapid City, SD (KUNR), launched 12:00Z, 7.5 hours before the alert went out and 247 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
- 53 J/kg
- Mixed-layer CIN
- -334 J/kg
- Mixed-layer LCL
- 2123 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- -18 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Jul 24, 1:13 PM MDT | Mesoscale Discussion | SPC | Blaine, Chouteau, Fergus, Garfield, Petroleum, Phillips and 1 more | 92 min |
| Jul 24, 2:04 PM MDT | Severe Thunderstorm Watch | SPC | Carter, Powder River | 7 hr |
| Jul 23, 7:09 PM MDT | Mesoscale Discussion | SPC | Bennett | 96 min |
| Jul 23, 9:45 PM MDT | Severe Thunderstorm Watch | SPC | Bon Homme, Charles Mix, Clay, Douglas, Hutchinson, Lincoln and 3 more | 7 hr |
| Jul 24, 12:46 AM MDT | Mesoscale Discussion | SPC | Bon Homme, Charles Mix, Clay, Douglas, Hutchinson, Lincoln and 3 more | 89 min |
| Jul 24, 9:47 AM MDT | Mesoscale Discussion | SPC | Todd | 118 min |
Nearby
Mesoscale Discussions in Wyoming, 2008Mesoscale Discussions in South Dakota, 2008Mesoscale Discussions in Montana, 2008Every mesoscale discussion in 2008
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.