Alert archive / Wisconsin / Mesoscale Discussions in 2017
Mesoscale Discussion 1296
The Storm Prediction Center issued this mesoscale discussion at Jul 12, 2017, 2:53 PM CDT for 22 counties in Wisconsin. It was in force for 97 min.
The area
The outline as issued.
The facts
- Issued
- Jul 12, 2017, 2:53 PM CDT (19:53 UTC)
- Expired
- Jul 12, 2017, 4:30 PM CDT
- In force
- 97 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 22 counties
Adams County, WI, Clark County, WI, Eau Claire County, WI, Forest County, WI, Jackson County, WI, Juneau County, WI, Langlade County, WI, Lincoln County, WI, Marathon County, WI, Marinette County, WI, Menominee County, WI, Monroe County, WI, Oconto County, WI, Oneida County, WI, Portage County, WI, Price County, WI, Shawano County, WI, Taylor County, WI, Vilas County, WI, Waupaca County, WI, Waushara County, WI, Wood County, WI
The radar
The La Crosse radar (KARX), 136 km from the middle of the area, began a volume at 19:54 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
Minneapolis, MN (KMPX), launched 12:00Z, 7.9 hours before the alert went out and 277 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
- 93 J/kg
- Mixed-layer CIN
- -377 J/kg
- Mixed-layer LCL
- 1288 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 133 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
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 |
|---|---|---|---|---|
| Jul 11, 9:49 PM CDT | Mesoscale Discussion | SPC | Crawford, Dane, Grant, Green, Iowa, Lafayette and 5 more | 116 min |
| Jul 11, 10:00 PM CDT | Severe Thunderstorm Watch | SPC | Barron, Chippewa, Dunn, Eau Claire, Polk, Rusk and 1 more | 6 hr |
| Jul 12, 1:49 AM CDT | Mesoscale Discussion | SPC | Adams, Barron, Buffalo, Burnett, Chippewa, Clark and 23 more | 2 hr |
| Jul 12, 3:56 AM CDT | Mesoscale Discussion | SPC | Chippewa, Clark, Eau Claire, Jackson, Langlade, Lincoln and 6 more | 3 hr |
| Jul 12, 3:33 PM CDT | Severe Thunderstorm Watch | SPC | Brown, Calumet, Clark, Florence, Forest, Jackson and 18 more | 7 hr |
| Jul 12, 6:19 PM CDT | Mesoscale Discussion | SPC | Adams, Crawford, Forest, Juneau, Langlade, Marathon and 11 more | 86 min |
Nearby
Mesoscale Discussions in Wisconsin, 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.