795 FXUS01 KWBC 120813 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 400 AM EDT Sun Apr 12 2026 Valid 12Z Sun Apr 12 2026 - 12Z Tue Apr 14 2026 ...More heavy mountain snow in the Sierra Nevada and drenching rain with gusty winds for California today... ...Strong to severe thunderstorms with heavy rain across the southern Plains as well as the Upper Midwest to the Great Lakes through today... ...Another round of severe thunderstorms possible across the Upper Midwest to the Great Lakes Monday night into Tuesday morning... An energetic low pressure system is currently moving onshore into California early this morning. The Sierra Nevada will possibly receive up to 2 additional feet of heavy snow today while the lower elevations will be drenched by up to an inch of rain with gusty winds from this system. Meanwhile, mountain snow and lower-elevation rain will quickly spread further inland across the Great Basin and up into the interior Pacific Northwest through Monday. From Monday night into Tuesday morning, the precipitation across the Pacific Northwest and the northern Rockies will begin to taper off. However, as the upper-level low pushes farther inland across the Desert Southwest toward the Four Corners, scattered showers and high-elevation snows will spread from west to east across these areas Monday night into Tuesday morning. Across the mid-section of the country, another low pressure system is forecast to track across the northern Plains before merging with a cold front dipping into the Great Lakes on Monday. Strong to severe thunderstorms along with heavy downpours are expected to move across the Upper Midwest to the Great Lakes for much of today with the passage of a warm front. Some of the rain with embedded thunderstorms will move across northern New England tonight and into Monday before tapering off Monday night. Also on Monday, the severe weather threat remains in place through central Texas while a new severe weather threat emerges across the upper Midwest later that day. This is in response to a low pressure wave developing along a frontal boundary. The severe weather and heavy rain threats will then head east across the Upper Midwest to the Great Lakes Monday night into Tuesday morning. The warm air across the mid-section of the country will expand eastward into the eastern U.S. during the next couple of days, with potential for record breaking highs over parts of the Mid-Atlantic, Southeast, Mississippi Valley, and Ohio/Tennessee Valley on Tuesday. Meanwhile, a cooling trend will gradually work its way across the western U.S. with ongoing unsettled weather associated with the low pressure system. Kong Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$