Alert archive / Wisconsin / Mesoscale Discussions in 2007

Mesoscale Discussion 884

May 24, 20076 counties in Michigan; 24 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at May 24, 2007, 7:11 PM EDT for 6 counties in Michigan; 24 counties in Wisconsin. It was in force for 64 min.

The area

The outline as issued.

The facts

Issued
May 24, 2007, 7:11 PM EDT (23:11 UTC)
Expired
May 24, 2007, 8:15 PM EDT
In force
64 min
Issued by
the Storm Prediction Center
All 30 counties

Alger County, MI, Delta County, MI, Dickinson County, MI, Marquette County, MI, Menominee County, MI, Schoolcraft County, MI, Adams County, WI, Brown County, WI, Calumet County, WI, Door County, WI, Florence County, WI, Forest County, WI, Juneau County, WI, Kewaunee County, WI, Langlade County, WI, Lincoln County, WI, Manitowoc County, WI, Marathon County, WI, Marinette County, WI, Menominee County, WI, Oconto County, WI, Oneida County, WI, Outagamie County, WI, Portage County, WI, Shawano County, WI, Vilas County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI

The radar

The Green Bay radar (KGRB), 112 km from the middle of the area, began a volume at 23:14 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.2 hours before the alert went out and 114 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 2007-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 17 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 2007-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 118 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
17 J/kg
Mixed-layer CIN
-149 J/kg
Mixed-layer LCL
1336 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
118 m²/s²
0-3 km storm-relative helicity
95 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
May 24, 3:25 PM EDTSevere Thunderstorm WatchSPCAlger, Baraga, Delta, Dickinson, Houghton, Iron and 3 more5 hr
May 23, 8:42 PM EDTMesoscale DiscussionSPCBuffalo, Clark, Eau Claire, Jackson, La Crosse, Pepin and 1 more2 hr
May 24, 1:52 PM EDTMesoscale DiscussionSPCAdams, Brown, Calumet, Clark, Columbia, Dane and 29 more113 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.