Alert archive / Wisconsin / Mesoscale Discussions in 2007

Mesoscale Discussion 1190

June 18, 20078 counties in Michigan; 6 counties in Minnesota; 37 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jun 18, 2007, 4:27 PM EDT for 8 counties in Michigan; 6 counties in Minnesota; 37 counties in Wisconsin. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued
Jun 18, 2007, 4:27 PM EDT (20:27 UTC)
Expired
Jun 18, 2007, 6:00 PM EDT
In force
93 min
Issued by
the Storm Prediction Center
All 51 counties

Alger County, MI, Baraga County, MI, Dickinson County, MI, Gogebic County, MI, Iron County, MI, Marquette County, MI, Menominee County, MI, Ontonagon County, MI, Fillmore County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Wabasha County, MN, Winona County, MN, Adams County, WI, Brown County, WI, Buffalo County, WI, Calumet County, WI, Chippewa County, WI, Clark County, WI, Eau Claire County, WI, Florence County, WI, Fond du Lac County, WI, Forest County, WI, Green Lake County, WI, Iron County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Langlade County, WI, Lincoln County, WI, Marathon County, WI, Marinette County, WI, Marquette County, WI, Menominee County, WI, Monroe County, WI, Oconto County, WI, Oneida County, WI, Outagamie County, WI, Pepin County, WI, Portage County, WI, Price County, WI, Rusk County, WI, Shawano County, WI, Taylor County, WI, Trempealeau County, WI, Vilas County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI

The radar

The La Crosse radar (KARX), 146 km from the middle of the area, began a volume at 20:29 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 8.5 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.

Skew-T log-pSkew-T log-p diagram, Green Bay/Straub, WI at 12:00Z on 2007-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1126 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 12:00Z on 2007-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 89 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
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

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 18, 12:06 PM EDTMesoscale DiscussionSPCBaraga, Dickinson, Gogebic, Houghton, Iron, Keweenaw and 2 more54 min
Jun 18, 1:46 PM EDTSevere Thunderstorm WatchSPCBaraga, Dickinson, Gogebic, Houghton, Iron, Keweenaw and 3 more7 hr
Jun 18, 7:19 PM EDTMesoscale DiscussionSPCDickinson, Marquette, Menominee86 min
Jun 17, 8:59 PM EDTMesoscale DiscussionSPCBeltrami, Clay, Clearwater, Itasca, Kittson, Koochiching and 9 more91 min
Jun 17, 11:43 PM EDTMesoscale DiscussionSPCBecker, Big Stone, Clay, Clearwater, Grant, Kittson and 9 more62 min
Jun 18, 1:03 AM EDTSevere Thunderstorm WatchSPCBecker, Beltrami, Clay, Clearwater, Grant, Hubbard and 12 more3 hr
Jun 18, 1:44 AM EDTMesoscale DiscussionSPCAitkin, Beltrami, Benton, Carlton, Cass, Clearwater and 14 more61 min
Jun 18, 2:09 AM EDTSevere Thunderstorm WatchSPCAitkin, Cass, Crow Wing, Itasca, Koochiching3 hr

Nearby

Mesoscale Discussions in Wisconsin, 2007Mesoscale Discussions in Michigan, 2007Mesoscale Discussions in Minnesota, 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.