Alert archive / Washington / Mesoscale Discussions in 2014
Mesoscale Discussion 1552
The Storm Prediction Center issued this mesoscale discussion at Aug 12, 2014, 5:11 PM PDT for 5 counties in Idaho; 8 counties in Oregon; 17 counties in Washington. It was in force for 64 min.
The area
The outline as issued.
The facts
- Issued
- Aug 12, 2014, 5:11 PM PDT (00:11 UTC)
- Expired
- Aug 12, 2014, 6:15 PM PDT
- In force
- 64 min
- Issued by
- the Storm Prediction Center
All 30 counties
Benewah County, ID, Kootenai County, ID, Latah County, ID, Lewis County, ID, Nez Perce County, ID, Gilliam County, OR, Hood River County, OR, Morrow County, OR, Sherman County, OR, Umatilla County, OR, Union County, OR, Wallowa County, OR, Wasco County, OR, Adams County, WA, Asotin County, WA, Benton County, WA, Chelan County, WA, Columbia County, WA, Douglas County, WA, Franklin County, WA, Garfield County, WA, Grant County, WA, Kittitas County, WA, Klickitat County, WA, Lincoln County, WA, Skamania County, WA, Spokane County, WA, Walla Walla County, WA, Whitman County, WA, Yakima County, WA
The radar
The Spokane radar (KOTX), 122 km from the middle of the area, began a volume at 00:14 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
Spokane, WA (KOTX), launched 00:00Z, 0.2 hours before the alert went out and 199 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
- 13 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 2677 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 42 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 |
|---|---|---|---|---|
| Aug 13, 11:44 AM PDT | Mesoscale Discussion | SPC | Gooding, Owyhee, Twin Falls | 2 hr |
| Aug 13, 12:21 PM PDT | Severe Thunderstorm Watch | SPC | Ada, Blaine, Camas, Cassia, Elmore, Gooding and 5 more | 7 hr |
| Aug 13, 2:48 PM PDT | Mesoscale Discussion | SPC | Adams, Benewah, Clark, Clearwater, Custer, Idaho and 8 more | 117 min |
| Aug 13, 3:26 PM PDT | Mesoscale Discussion | SPC | Bannock, Bingham, Blaine, Butte, Camas, Cassia and 8 more | 2 hr |
Nearby
Mesoscale Discussions in Washington, 2014Mesoscale Discussions in Oregon, 2014Mesoscale Discussions in Idaho, 2014Every mesoscale discussion in 2014
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.