[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 181218
SWOMCD
SPC MCD 181218 
WIZ000-IAZ000-MNZ000-SDZ000-181615-

MESOSCALE DISCUSSION 0307
NWS STORM PREDICTION CENTER NORMAN OK
0618 AM CST FRI MAR 18 2005

AREAS AFFECTED...FAR NRN IA/SRN MN INTO WCNTRL WI

CONCERNING...HEAVY SNOW 

VALID 181218Z - 181615Z

BAND OF MDT/HEAVY SNOW EXPECTED TO CONTINUE ACROSS FAR NRN IA/SRN MN
INTO WCNTRL WI INTO EARLY AFTERNOON. EMBEDDED 1.0-2.0 IN/HR RATES
WILL BE POSSIBLE.

WATER VAPOR IMAGERY EARLY THIS MORNING DEPICTS UPPER TROUGH MOVING
EWD OVER SD/NEB. IR SATELLITE TRENDS OVER PAST SEVERAL HOURS
FEATURES BLOSSOMING/VERY COLD -60C CLOUD TOPS ACROSS FAR NRN IA/SRN
MN INTO WRN WI...LARGELY ATTRIBUTABLE TO DPVA WITH MODERATE LOW
LEVEL WARM AIR ADVECTION REGIME /REF SLATER IA AND LATHROP MO
PROFILERS/. GIVEN RELATIVELY SLOW EWD MOVING NATURE OF
CYCLONE/DEVELOPING DEFORMATION BAND...PROLONGED/CONFINED CORRIDOR OF
MDT/HEAVY SNOW EXPECTED TO PERSIST INVOF STRONG WEST-EAST ORIENTED
BAROCLINIC ZONE FROM SRN MN/FAR NRN IA INTO WCNTRL WI THROUGH EARLY
AFTERNOON. PER 12Z OAX/DVN RAOBS...PROXIMITY OF 7.0-8.0 C/KM MID
LEVEL LAPSE RATES SUGGESTS POSSIBILITY OF EMBEDDED THUNDERSNOW/SNOW
RATE ENHANCEMENT.

..GUYER.. 03/18/2005

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

ATTN...WFO...GRB...MKX...ARX...MPX...DMX...FSD...

44398986 44038959 43658952 43319008 43269282 43029509
43099602 43239662 43619683 44389661 44729496 44929233
44639059 

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