[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 190059
SWOMCD
SPC MCD 190059 
MIZ000-190500-

MESOSCALE DISCUSSION 2542
NWS STORM PREDICTION CENTER NORMAN OK
0659 PM CST SAT DEC 18 2004

AREAS AFFECTED...UPPER PENINSULA OF MI

CONCERNING...HEAVY SNOW 

VALID 190059Z - 190500Z

...OCCASIONALLY HEAVY LAKE EFFECT SNOW BANDS WILL CONTINUE TO AFFECT
THE U.P. OF MI TONIGHT...WITH SNOW RATES UP TO 2"/HR...

RECENT RADAR IMAGERY FROM MARQUETTE AND DULUTH SHOW MULTIPLE LAKE
EFFECT SNOW BANDS WITH A FAVORED NLY FETCH OFF LAKE SUPERIOR. LATEST
SHORT TERM GUIDANCE SUGGEST THESE BANDS WILL CONTINUE FOR SEVERAL
MORE HOURS THIS EVENING. LOW LEVEL INSTABILITY WILL ONLY INCREASE
THIS EVENING...AS ARCTIC AIRMASS BECOMES MORE ENTRENCHED. VWP DATA
INDICATE A NLY UNIDIRECTIONAL WIND PROFILE THROUGH AT LEAST 3
KM...AND FORECAST SOUNDINGS SUGGEST THIS WILL DEEPEN TO AROUND 500
MB BY 03Z. IN ADDITION VERY STRONG SFC WINDS OF 20-30 MPH WITH
HIGHER GUSTS WILL REDUCE VISIBILITY LOCALLY TO LESS THAN A MILE AT
TIMES THIS EVENING. HEAVIER SNOW BANDS WILL LIKELY DIMINISH EARLIER
ACROSS THE ERN PORTION OF THE PENINSULA ASSOCIATED WITH STRONG
SUBSIDENCE/CAA WITH THE UPPER TROUGH.

..TAYLOR.. 12/19/2004

...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...APX...MQT...

45888508 45868567 46008737 46578877 47178849 47418797
46688530 46508471 46218466 

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