Alert archive / Wisconsin / Mesoscale Discussions in 2011
Mesoscale Discussion 1122
The Storm Prediction Center issued this mesoscale discussion at Jun 7, 2011, 2:32 AM EDT for 7 counties in Michigan; Itasca County, Lake County, Saint Louis County, Minnesota; 14 counties in Wisconsin. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 7, 2011, 2:32 AM EDT (06:32 UTC)
- Expired
- Jun 7, 2011, 5:00 AM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 24 counties
Baraga County, MI, Delta County, MI, Dickinson County, MI, Gogebic County, MI, Iron County, MI, Menominee County, MI, Ontonagon County, MI, Itasca County, MN, Lake County, MN, Saint Louis County, MN, Ashland County, WI, Bayfield County, WI, Florence County, WI, Forest County, WI, Iron County, WI, Langlade County, WI, Lincoln County, WI, Marinette County, WI, Menominee County, WI, Oconto County, WI, Oneida County, WI, Price County, WI, Shawano County, WI, Vilas County, WI
The radar
The Marquette radar (KMQT), 181 km from the middle of the area, began a volume at 06:36 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 00:00Z, 6.5 hours before the alert went out and 230 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
- 3260 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 1262 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 171 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 10.8
The text
As transmitted, in the capitals the NWS used until 2016.
744
ACUS11 KWNS 070632
SWOMCD
SPC MCD 070632
MIZ000-WIZ000-MNZ000-070900-
MESOSCALE DISCUSSION 1122
NWS STORM PREDICTION CENTER NORMAN OK
0132 AM CDT TUE JUN 07 2011
AREAS AFFECTED...NERN MN...NRN WI...WRN UPPER MI
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 070632Z - 070900Z
STORMS ALONG A WARM ADVECTION WING STRETCH FROM NRN MN INTO NRN WI
WITH SIGNS OF MARGINALLY SEVERE HAIL ONGOING. A SEPARATE CLUSTER OF
STORMS EARLIER FORMED FARTHER S AND HAS WEAKENED OVER NWRN WI.
HOWEVER...STRONG INSTABILITY AND MOISTURE AWAIT JUST DOWNSTREAM OVER
NERN WI...AND THIS AREA COULD INCREASE IN INTENSITY ONCE AGAIN GIVEN
FAVORABLE DEEP LAYER EFFECTIVE SHEAR AROUND 40 KT WITH A LARGE HAIL
THREAT.
..JEWELL.. 06/07/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...MQT...GRB...DLH...ARX...
LAT...LON 46378749 45848659 45658661 45018716 44508753 44538804
44988956 45389035 45659048 45799049 46339129 46869298
47099407 47439416 47669367 47609170 47268939 46558801
46378749Nearby
Mesoscale Discussions in Wisconsin, 2011Mesoscale Discussions in Michigan, 2011Mesoscale Discussions in Minnesota, 2011Every mesoscale discussion in 2011
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.