Alert archive / Wisconsin / Mesoscale Discussions in 2007
Mesoscale Discussion 1189
The Storm Prediction Center issued this mesoscale discussion at Jun 18, 2007, 12:06 PM EDT for 8 counties in Michigan; 27 counties in Wisconsin. It was in force for 54 min.
The area
The outline as issued.
The facts
- Issued
- Jun 18, 2007, 12:06 PM EDT (16:06 UTC)
- Expired
- Jun 18, 2007, 1:00 PM EDT
- In force
- 54 min
- Issued by
- the Storm Prediction Center
All 35 counties
Baraga County, MI, Dickinson County, MI, Gogebic County, MI, Houghton County, MI, Iron County, MI, Keweenaw County, MI, Marquette County, MI, Ontonagon County, MI, Ashland County, WI, Barron County, WI, Bayfield County, WI, Chippewa County, WI, Clark County, WI, Dunn County, WI, Eau Claire County, WI, Florence County, WI, Forest County, WI, Iron County, WI, Langlade County, WI, Lincoln County, WI, Marathon County, WI, Menominee County, WI, Oneida County, WI, Pepin County, WI, Polk County, WI, Portage County, WI, Price County, WI, Rusk County, WI, Saint Croix County, WI, Sawyer County, WI, Shawano County, WI, Taylor County, WI, Vilas County, WI, Washburn County, WI, Wood County, WI
The radar
The Duluth radar (KDLH), 195 km from the middle of the area, began a volume at 16:08 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
Green Bay/Straub, WI (KGRB), launched 12:00Z, 4.1 hours before the alert went out and 221 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
- 1126 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 1156 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.0
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 |
|---|---|---|---|---|
| Jun 18, 1:46 PM EDT | Severe Thunderstorm Watch | SPC | Baraga, Dickinson, Gogebic, Houghton, Iron, Keweenaw and 3 more | 7 hr |
| Jun 18, 4:27 PM EDT | Mesoscale Discussion | SPC | Alger, Baraga, Dickinson, Gogebic, Iron, Marquette and 2 more | 93 min |
| Jun 18, 7:19 PM EDT | Mesoscale Discussion | SPC | Dickinson, Marquette, Menominee | 86 min |
| Jun 18, 1:44 AM EDT | Mesoscale Discussion | SPC | Bayfield, Douglas | 61 min |
Nearby
Mesoscale Discussions in Wisconsin, 2007Mesoscale Discussions in Michigan, 2007Every mesoscale discussion in 2007
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.