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Mesoscale Discussion 2240 | |
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Mesoscale Discussion 2240 NWS Storm Prediction Center Norman OK 1023 PM CST Thu Nov 21 2024 Areas affected...the Catskills and Poconos vicinity of northeastern Pennsylvania and southeastern New York Concerning...Heavy snow Valid 220423Z - 220830Z SUMMARY...Snowfall rates of an inch per hour are expected locally across parts of southeastern New York and northeastern Pennsylvania, specifically over the higher terrain in the Catskills and Poconos vicinity. DISCUSSION...As an upper low centered over southwestern Pennsylvania moves slowly east-southeastward, a surface low currently analyzed over the eastern Long Island vicinity will continue to retrograde northwestward across southern New England and eventually into southeastern New York. Strong low-level warm advection north of the low is resulting in widespread moderate to heavy precipitation -- mostly in the form of rain -- across southern New England and into eastern New York, northeastern Pennsylvania, and northern New Jersey. However, temperatures near or slightly below freezing are indicated across the higher terrain areas including the Poconos and Catskills, where moderate to locally heavy snow is occurring (moderate snow is now being reported at the BGM obs site). Given the rather slow movement of the upper system, QG ascent across the discussion area should remain strong over the next 3 to 6 hours. As such, expect locally heavy snow -- at rates near an inch per hour -- to persist through midnight and into early Friday morning. ..Goss/Guyer.. 11/22/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...ALY...PHI...BGM...CTP... LAT...LON 42677447 42397416 41817439 41547501 41107548 41177575 41367590 41477650 41887688 42867614 42917505 42677447 |
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