Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 257 AM EST Mon Nov 14 2022 Valid 12Z Mon Nov 14 2022 - 12Z Wed Nov 16 2022 ...Potent shortwave tracking across central Plains on Monday will produce region's first accumulating snow of the season... ...Coastal rain; inland mixed precipitation on Tuesday across Northeast and Mid-Atlantic as coastal low develops and moves up coast... ...Anomalously cold temperatures continue to grip the lower 48 through the work week... ...Santa Ana winds return across Southern California on Tuesday... A potent shortwave diving southward across the Southwest early Monday morning will be the lower 48's next source of inclement weather as it tracks eastward across the country. Light snow has already developed across New Mexico and will quickly overspread the central Plains during the daytime hours on Monday as the upper-level energy moves into the region. While uncertainty remains regarding the location of the heaviest axis of snow, the potential exists for snowfall totals of 3-6" across west-central Oklahoma, with lesser amounts south due to unfavorable temperature profiles resulting in a mix of rain and snow. Light snow totals are also possible across southern Kansas and the Texas panhandle. As a result, widespread Winter Weather Advisories have been issued for the central Plains and southern Rockies, with a smaller Winter Storm Watch being hoisted for western Oklahoma, where the greatest potential for moderate snow totals exists. Reduced visibility leading to hazardous driving conditions will be a concern as the region experiences its first notable wintry event of the season. As the system continues tracking eastward, a low-pressure system is forecast to develop along the Texas Gulf Coast, which will track along the coastline, producing moderate to potentially heavy rainfall across southern Louisiana on Monday afternoon and into the evening. Precipitation amounts will remain lighter further north in the cold sector of the system, with light rain expanding into the Mississippi Valley and Southeast while mixed precipitation and light snow overspread the Midwest and Ohio Valley. As the upper-level energy progresses northeastward into the Mid-Atlantic early Tuesday, a coastal low will develop offshore the Carolinas before intensifying and moving up the coast, producing widespread precipitation across the region. Coastal sections of the Northeast and Mid-Atlantic are forecast to see rain, while areas further inland across Pennsylvania and interior New England may see mixed precipitation and snow. Uncertainty surrounding precipitation types is still high, as the track of the system and temperature profiles will dictate where the rain/snow line sets up. Furthermore, anomalously cold air continues to grip the nation as high temperatures are forecast to remain 10-20 degrees below average through the work week. Locations as far south as the Gulf Coast and Florida panhandle will dip into the 30s on Monday morning, with Freeze Warnings being issued across central Alabama and Georgia, as well as further north in the Mid-Atlantic. Lastly, high-pressure building into the Great Basin region behind the potent shortwave will lead to strong Santa Ana winds across southern California beginning Tuesday evening due to an increasing pressure gradient across the region. As a result, High Wind Watches have been issued for the Transverse Ranges, where winds may gust as high as 60-75 mph. Russell Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php