975
ACUS11 KWNS 202239
SWOMCD
SPC MCD 202239
NYZ000-210245-
MESOSCALE DISCUSSION 0041
NWS STORM PREDICTION CENTER NORMAN OK
0439 PM CST MON JAN 20 2025
AREAS AFFECTED...PORTIONS OF FAR WESTERN NEW YORK
CONCERNING...HEAVY SNOW
VALID 202239Z - 210245Z
SUMMARY...INSTANCES OF HEAVY LAKE-EFFECT SNOW SHOULD CONTINUE
THROUGH THE EVENING, WITH 2 INCH/HOUR SNOWFALL RATES POSSIBLE,
ESPECIALLY OVER ERIE COUNTY, NEW YORK.
DISCUSSION...DEEP-LAYER FLOW (ESPECIALLY CLOSER TO THE SURFACE) HAS
BECOME MORE ALIGNED WITH THE LONG AXIS OF LAKE ERIE OVER THE PAST
COUPLE OF HOURS GIVEN THE PASSING OF A WEAK SURFACE TROUGH. THE LONG
FETCH OF APPRECIABLE LOW-LEVEL MOISTURE OFF OF THE LAKE WATERS WILL
SUPPORT LAKE EFFECT SNOW INTO THE EVENING HOURS. 6-7 C/KM LOW-LEVEL
LAPSE RATES (EVIDENT VIA 22Z MESOANALYSIS) WILL SUPPORT CONTINUED
HEAVIER SNOWFALL (AS WAS RECENTLY OBSERVED AT THE DKK ASOS), WITH
SNOWFALL RATES POTENTIALLY APPROACHING 2 INCHES/HOUR AT TIMES.
..SQUITIERI.. 01/20/2025
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
ATTN...WFO...BUF...
LAT...LON 42667911 42767897 42817890 42907887 42927861 42777847
42617851 42527878 42517889 42577899 42667911
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