Alert archive / Idaho / Mesoscale Discussions in 2017
Mesoscale Discussion 1162
The Storm Prediction Center issued this mesoscale discussion at Jun 27, 2017, 1:21 PM MDT for 12 counties in Idaho; 6 counties in Montana; 11 counties in Wyoming. It was in force for 84 min.
The area
The outline as issued.
The facts
- Issued
- Jun 27, 2017, 1:21 PM MDT (19:21 UTC)
- Expired
- Jun 27, 2017, 2:45 PM MDT
- In force
- 84 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 29 counties
Bannock County, ID, Bear Lake County, ID, Bingham County, ID, Bonneville County, ID, Butte County, ID, Caribou County, ID, Clark County, ID, Franklin County, ID, Fremont County, ID, Jefferson County, ID, Madison County, ID, Teton County, ID, Beaverhead County, MT, Carbon County, MT, Gallatin County, MT, Madison County, MT, Park County, MT, Stillwater County, MT, Big Horn County, WY, Fremont County, WY, Hot Springs County, WY, Johnson County, WY, Lincoln County, WY, Natrona County, WY, Park County, WY, Sheridan County, WY, Sublette County, WY, Teton County, WY, Washakie County, WY
The radar
The Riverton/Lander radar (KRIW), 163 km from the middle of the area, began a volume at 19:22 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 nearest sounding before it
Riverton, WY (KRIW), launched 12:00Z, 7.4 hours before the alert went out and 168 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
- 2992 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 6:26 PM MDT | Mesoscale Discussion | SPC | Benewah, Clearwater, Kootenai, Latah, Shoshone | 64 min |
| Jun 27, 2:04 PM MDT | Mesoscale Discussion | SPC | Campbell, Converse, Crook, Goshen, Laramie, Niobrara and 2 more | 2 hr |
Nearby
Mesoscale Discussions in Idaho, 2017Mesoscale Discussions in Wyoming, 2017Mesoscale Discussions in Montana, 2017Every mesoscale discussion 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.