Alert archive / Wisconsin / Mesoscale Discussions in 2005

Mesoscale Discussion 113

January 21, 20056 states

The Storm Prediction Center issued this mesoscale discussion at Jan 21, 2005, 6:44 PM CST for 6 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Jan 21, 2005, 6:44 PM CST (00:44 UTC)
Expired: Jan 21, 2005, 11:45 PM CST
In force: 5 hr
Issued by: the Storm Prediction Center

All 65 counties

Allamakee County, IA, Clayton County, IA, Dubuque County, IA, Winneshiek County, IA, Boone County, IL, Carroll County, IL, Cook County, IL, DeKalb County, IL, DuPage County, IL, Jo Daviess County, IL, Kane County, IL, Kendall County, IL, Lake County, IL, Lee County, IL, McHenry County, IL, Ogle County, IL, Stephenson County, IL, Will County, IL, Winnebago County, IL, Lake County, IN, LaPorte County, IN, Porter County, IN, Saint Joseph County, IN, Berrien County, MI, Van Buren County, MI, Fillmore County, MN, Houston County, MN, Winona County, MN, Adams County, WI, Buffalo County, WI, Clark County, WI, Columbia County, WI, Crawford County, WI, Dane County, WI, Dodge County, WI, Eau Claire County, WI, Fond du Lac County, WI, Grant County, WI, Green County, WI, Green Lake County, WI, Iowa County, WI, Jackson County, WI, Jefferson County, WI, Juneau County, WI, Kenosha County, WI, La Crosse County, WI, Lafayette County, WI, Marquette County, WI, Milwaukee County, WI, Monroe County, WI, Ozaukee County, WI, Pepin County, WI, Portage County, WI, Racine County, WI, Richland County, WI, Rock County, WI, Sauk County, WI, Trempealeau County, WI, Vernon County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI

The radar

The Milwaukee radar (KMKX), 81 km from the middle of the area, began a volume at 00:45 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, 0.7 hours before the alert went out and 181 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 621 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 178 m²/s²
0-3 km storm-relative helicity: 291 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.

000 
ACUS11 KWNS 220045
SWOMCD
SPC MCD 220044 
MIZ000-INZ000-ILZ000-WIZ000-IAZ000-MNZ000-220545-

MESOSCALE DISCUSSION 0113
NWS STORM PREDICTION CENTER NORMAN OK
0644 PM CST FRI JAN 21 2005

AREAS AFFECTED...FAR SE MN/NE IA...CNTRL/SRN WI...AND NRN IL/NW IN

CONCERNING...HEAVY SNOW 

VALID 220044Z - 220545Z

MDT/HEAVY SNOW WILL CONTINUE TO SHIFT SEWD ACROSS FAR SE MN/NE IA
AND CNTRL/SRN WI THIS EVENING...WITH SNOW INCREASING AFTER 03Z
ACROSS NRN IL/NW IN. RATES OF 1.0-1.5 IN/HR WILL BE POSSIBLE FOR
SEVERAL HOURS DURATION.

WATER VAPOR/INFRARED SATELLITE CHANNELS PORTRAY LEADING SHORTWAVE
IMPULSE OVER SE SD/WRN IA AHEAD OF SECONDARY SHORTWAVE TROUGH
PLUNGING SWD ACROSS SRN MANITOBA. AS SEEN BY STRONG WAA REGIME IN
00Z MPX/DVN RAOBS AND BLR /BLUE RIVER WI/ PROFILER...WAA/INCREASING
ISENTROPIC ASCENT IN 285K-295K LAYER WILL CONTINUE THE SEWD
EXTRAPOLATION OF MDT/HEAVY SNOW THROUGH SRN WI/NE IA/NRN IL/NW IND
THIS EVENING. WITHIN THIS CORRIDOR...18Z ETA/21Z RUC FCST SOUNDINGS
ARE INDICATIVE OF DEEPLY SATURATED VERTICAL PROFILES AMIDST
FAVORABLE DENDRITIC LAYER. 21Z RUC SOUNDINGS SUGGEST HEAVIEST
SNOWFALL WILL MATERIALIZE AROUND/AFTER 03Z ACROSS THE CHICAGO METRO
AREA.

..GUYER.. 01/22/2005

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

...NOTICE...
SPC WINTER WEATHER MESOSCALE DISCUSSIONS WILL BE ISSUED ON A 
SCHEDULED BASIS...FOUR TIMES A DAY...BETWEEN 00-01 UTC...
06-07 UTC...12-13 UTC...AND 18-19 UTC AS SIGNIFICANT SHORT
RANGE WINTER WEATHER EVENTS UNFOLD.  THIS SCHEDULE WILL BE
USED FROM DECEMBER 1 THROUGH FEBRUARY 28.

ATTN...WFO...IWX...GRR...GRB...LOT...MKX...DVN...ARX...MPX...

44949010 44288862 43398746 42078595 41548619 41228705
41378831 41798975 42609118 43399232 43839252 44449207
45009137

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 21, 11:56 PM CST	Mesoscale Discussion	SPC	Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 20 more	6 hr
Jan 22, 6:41 AM CST	Mesoscale Discussion	SPC	Adams, Allen, Blackford, DeKalb, Elkhart, Fulton and 16 more	6 hr
Jan 21, 10:50 PM CST	Mesoscale Discussion	SPC	Allamakee, Cerro Gordo, Chickasaw, Emmet, Floyd, Howard and 5 more	6 hr

Nearby

Mesoscale Discussions in Wisconsin, 2005 Mesoscale Discussions in Illinois, 2005 Mesoscale Discussions in Indiana, 2005 Every mesoscale discussion in 2005

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.