Alert archive / Wisconsin / Mesoscale Discussions in 2012
Mesoscale Discussion 942
The Storm Prediction Center issued this mesoscale discussion at May 28, 2012, 4:58 PM EDT for 6 counties in Michigan; 22 counties in Minnesota; 65 counties in Wisconsin. It was in force for 92 min.
The area
The outline as issued.
The facts
- Issued
- May 28, 2012, 4:58 PM EDT (20:58 UTC)
- Expired
- May 28, 2012, 6:30 PM EDT
- In force
- 92 min
- Issued by
- the Storm Prediction Center
All 93 counties
Delta County, MI, Dickinson County, MI, Iron County, MI, Luce County, MI, Menominee County, MI, Schoolcraft County, MI, Anoka County, MN, Benton County, MN, Carlton County, MN, Carver County, MN, Chisago County, MN, Dakota County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Kandiyohi County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Pine County, MN, Ramsey County, MN, Renville County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Washington County, MN, Wright County, MN, Adams County, WI, Ashland County, WI, Barron County, WI, Bayfield County, WI, Brown County, WI, Burnett County, WI, Calumet County, WI, Chippewa County, WI, Clark County, WI, Columbia County, WI, Dane County, WI, Dodge County, WI, Door County, WI, Douglas County, WI, Dunn County, WI, Eau Claire County, WI, Florence County, WI, Fond du Lac County, WI, Forest County, WI, Grant County, WI, Green County, WI, Green Lake County, WI, Iowa County, WI, Iron County, WI, Jefferson County, WI, Juneau County, WI, Kenosha County, WI, Kewaunee County, WI, Lafayette County, WI, Langlade County, WI, Lincoln County, WI, Manitowoc County, WI, Marathon County, WI, Marinette County, WI, Marquette County, WI, Menominee County, WI, Milwaukee County, WI, Oconto County, WI, Oneida County, WI, Outagamie County, WI, Ozaukee County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Portage County, WI, Price County, WI, Racine County, WI, Richland County, WI, Rock County, WI, Rusk County, WI, Saint Croix County, WI, Sauk County, WI, Sawyer County, WI, Shawano County, WI, Sheboygan County, WI, Taylor County, WI, Vilas County, WI, Walworth County, WI, Washburn County, WI, Washington County, WI, Waukesha County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI
The radar
The La Crosse radar (KARX), 183 km from the middle of the area, began a volume at 20:57 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, 9.0 hours before the alert went out and 218 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
- 42 J/kg
- Mixed-layer CIN
- -178 J/kg
- Mixed-layer LCL
- 1757 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 133 m²/s²
- 0-3 km storm-relative helicity
- 158 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
271
ACUS11 KWNS 282058
SWOMCD
SPC MCD 282058
MIZ000-WIZ000-ILZ000-IAZ000-MNZ000-282230-
MESOSCALE DISCUSSION 0942
NWS STORM PREDICTION CENTER NORMAN OK
0358 PM CDT MON MAY 28 2012
AREAS AFFECTED...MN....WI...MI
CONCERNING...SEVERE THUNDERSTORM WATCH 308...309...
VALID 282058Z - 282230Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
308...309...CONTINUES.
SUMMARY...SCATTERED STRONG TO OCCASIONALLY SEVERE STORMS CONTINUE
ACROSS WATCHES 308 AND 309. CONVECTION DOES APPEAR TO TAKING ON MORE
LINEAR CHARACTER AND EXPECT WIND AND HAIL POTENTIAL TO CONTINUE IN
PORTIONS OF BOTH WATCHES INTO THE EVENING.
DISCUSSION...CONVECTION ACROSS WI HAS STRUGGLED TO ATTAIN MORE VIGOR
THIS AFTERNOON BUT A FEW STORMS HAVE INTENSIFIED RECENTLY AND WIND
AND HAIL SHOULD CONTINUE TO BE A THREAT. FARTHER WEST...IN WATCH
309...RECENT TRENDS SUGGEST STORMS NEAR LAKE SUPERIOR AND ACROSS
CNTRL MN HAVE WEAKENED SOMEWHAT. HOWEVER...LARGE SCALE FORCING AND
SHEAR WILL CONTINUE TO SUPPORT PERSISTENCE. SOME OF THIS ACTIVITY
MAY SPREAD INTO THE WRN PORTIONS OF WATCH 308 DURING THE EVENING
WITH SOME CHANCE FOR HAIL AND WIND CONTINUING.
..CARBIN.. 05/28/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...APX...MQT...GRB...LOT...MKX...DVN...DLH...ARX...
MPX...
LAT...LON 46518632 46658534 45738605 43578723 42448705 42459048
42559106 43519062 44389033 44489496 45029529 45759514
45779437 46419407 46469316 46739311 46759244 47019055
46579072 46298985 46228904 46428895 46518632SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 1:54 PM EDT | Severe Thunderstorm Watch | SPC | Delta, Dickinson, Iron, Luce, Menominee, Schoolcraft | 7 hr |
| May 27, 8:47 PM EDT | Mesoscale Discussion | SPC | Aitkin, Anoka, Benton, Carlton, Carver, Chippewa and 33 more | 88 min |
| May 27, 10:51 PM EDT | Mesoscale Discussion | SPC | Blue Earth, Jackson, Martin, Nicollet, Watonwan | 84 min |
| May 27, 11:11 PM EDT | Mesoscale Discussion | SPC | Aitkin, Anoka, Benton, Blue Earth, Brown, Carlton and 45 more | 94 min |
| May 28, 2:48 PM EDT | Mesoscale Discussion | SPC | Anoka, Benton, Carlton, Carver, Chisago, Dakota and 17 more | 57 min |
| May 28, 3:07 PM EDT | Severe Thunderstorm Watch | SPC | Anoka, Benton, Carlton, Carver, Chisago, Dakota and 14 more | 6 hr |
| May 28, 1:00 PM EDT | Mesoscale Discussion | SPC | Adams, Brown, Calumet, Clark, Columbia, Crawford and 34 more | 60 min |
| May 28, 7:28 PM EDT | Mesoscale Discussion | SPC | Barron, Chippewa, Dunn, Rusk, Sawyer, Washburn | 62 min |
Nearby
Mesoscale Discussions in Wisconsin, 2012Mesoscale Discussions in Minnesota, 2012Mesoscale Discussions in Michigan, 2012Every mesoscale discussion in 2012
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.