Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 322 PM EDT Mon Mar 13 2023 Valid 00Z Tue Mar 14 2023 - 00Z Thu Mar 16 2023 ...Major Winter Storms to impact both the Northeast and California over the next few days... ...Widespread Heavy snows likely from northeast Pennsylvania, far northwest New Jersey, across much of New York State and much of New England... ...Another Atmospheric River event taking aim at much California, producing additional major flooding and high elevation heavy snows... ...A hard freeze possible Tuesday and Wednesday morning from the Tennessee Valley into portions of the South and Southeast... A very stormy period on tap for both the Northeast and California over the next two days, with major winter storms affecting both areas. Surface low pressure just off the North Carolina coast Monday afternoon will be intensifying tonight into early Tuesday as it pushes toward southeast New England. Heavy snows will be developing tonight to the north and northwest of this storm, with widespread heavy snow totals in the 6 to 18 inch range likely from northeast Pennsylvania/far northwest New Jersey, through much of NY State and much of New England, with isolated totals in excess of 2 feet possible. In addition to the heavy snows, winds will be increasing in response to the rapidly strengthening low, with gusts in excess of 50 mph likely. The combination of high winds and snowfall rates of as high as 2 to 3 inches per hour will make for dangerous to impossible travel conditions during the day on Tuesday. These high winds will also produce widespread minor beach erosion and flooding from along the New England and southern NY State coastal region. By Wednesday the storm is expected to begin to inch away from the New England coast, with some improvement likely for the recovery and dig out. At the same time as the winter storm deepens of the Northeast coast, another Atmospheric River event will be affecting much of California. Additional heavy precipitation will be moving back into much of California Monday night and continuing through all of Tuesday before beginning to taper off during Wednesday. This next heavy precipitation event will be affecting the same regions that were impacted by the very heavy rains last week. With the ground already saturated from the previous storm and river levels well above average, another round of major and life-threatening flooding is likely along much of the California coast, central Valley and foothills of the Sierra. Similar to the previous storm, snow melt below the 5000 foot level in the Sierra will exacerbate the flooding potential. Additional very heavy snows also likely with this next storm, with accumulations of 3 to 5 feet likely above 7500 feet in the Sierra Range. In the wake of the strong Northeast winter storm, cold temperatures will spread across the southeast quarter of the nation. This will produce the likelihood of widespread freezes both Tuesday and Wednesday morning from the Tennessee Valley into portion of the South and Southeast. Freeze warnings are currently in effect across these regions where recent above average temperatures have accelerated the spring growth cycle. Oravec Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php