Prognostic Meteorological Discussion
Issued by NWS
Issued by NWS
102 FXUS01 KWBC 162016 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 300 PM EST Sun Nov 16 2025 Valid 00Z Mon Nov 17 2025 - 00Z Wed Nov 19 2025 ...A round of moderate to heavy rainfall is expected to reach northern California tonight before spreading into coastal southern California with additional flash flooding and landslide concerns on Monday... ...Wintry mix and wet snow across northern New York, Great Lakes, interior New England, the Sierra Nevada, and portions of the northern and central Rockies with 6-12 inches possible in the higher elevations.... ...Well above normal to record-breaking warmth across Texas into early next week... Following a day of trenching rainfall across central and southern California, the low pressure system responsible for the inclement weather is weakening and moving farther inland. However, the next round of significant rainfall is on the horizon as the next frontal system in the Pacific is scheduled to reach northern California tonight with a low pressure center developing along the front. While the moisture associated this system appears not as robust as the one that has just impacted central and southern California, moderate to heavy rain can fall in earnest as it quickly spreads inland across northern California followed by central California through tonight. The moderate to heavy rain is forecast to progress eastward ahead of the cold front and reach the same areas in southern California impacted by the previous heavy rainfall, renewing concerns for additional flash flooding and landslides there. This is especially true around burn scars, coastal mountain ranges, and areas compromised by the previous storm. The Weather Prediction Center has a Slight Risk for Excessive Rainfall in effect to account for the possible impacts. Meanwhile, the central Sierra Nevada can expect 6-12+ inches of wet snow from this system. On Tuesday, central Arizona into southwestern Utah will likely see increasing chances for heavy rainfall and isolated flash flooding as the system moves eastward. A deepening cyclone moving through the Northeast tonight will set the stage for winter weather impacts, mostly confined to the Great Lakes and interior New England. Wrap-around moisture is forecast to bring enhanced snowfall downwind from the lower Great Lakes and to the Adirondacks, Green, and White mountain ranges. The higher elevations of northern Vermont could receive the highest snowfall accumulations between 6-12 inches. Winter Weather Advisories and Winter Storm Warnings are in effect across portions of the region. The cold front trailing from the deepening cyclone is forecast to sweep across the eastern U.S. and then out into the Atlantic, resulting in widespread blustery winds and colder air into the Northeast and the Mid-Atlantic and especially the Great Lakes through the next couple of days. By Monday night into Tuesday, the lake-effect snows are forecast to gradually taper off. Another low pressure system is then forecast to develop over the central Plains on Monday and move into the Midwest on Tuesday. This system will likely bring scattered showers and embedded thunderstorms across the Midwest ahead of a warm front on Tuesday. Some more scattered showers are expected farther north across the northern Plains on Monday, moving into portions of the upper Midwest on Tuesday. In addition, portions of the upper Midwest could see a period of wet snow Tuesday morning near the northern edge of this low pressure system. From snow to record warmth, Texas and the southern Plains will remain rather toasty for November as numerous cities will challenge or break daily record high temperatures topping the upper 80s across major Texas metros to the 90s across the Rio Grande. This is courtesy of strong mid-level ridging over the area. The warm temperatures look to persist into midweek and spread eastward towards the South by the latter half of the week. Lastly, there will be some remaining fire weather concerns across the Mid-Atlantic region late this afternoon before cooler air arrives behind the cold front. Kong/Wilder Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$