Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 346 PM EDT Sat Apr 04 2020 Valid 00Z Sun Apr 05 2020 - 00Z Tue Apr 07 2020 ...Precipitation is likely for the West, with heavy snow in the Sierra Nevada and the potential for flash flooding in Southern California... ...Increasing warmth from the Rockies eastward and colder than normal in the West... For the beginning of next week, a potent upper-level low is forecast to dive southeastward through the Eastern Pacific and move into California. This will provide support for precipitation as it pulls in Pacific moisture. Lower elevation rain and higher elevation snow is likely for much of the West. The highest snowfall totals are forecast for the Sierra Nevada--where multiple feet of snow are likely and Winter Storm Warnings are in effect. Meanwhile, the Shastas and the Wind River Mountains/Tetons could see several inches of snow. As rain takes aim at Southern California beginning Sunday, rainfall amounts could cause flooding/flash flooding problems early next week. This is particularly a concern over burn scars. Farther east, rain showers and a few thunderstorms are expected once again across Texas. These could produce locally heavy rain through this evening, which could cause isolated flooding concerns particularly over southern Texas, especially over areas that have received quite a bit of rain over the last couple days. Showers are also possible along a weakening cold front moving across the Ohio Valley tonight and the Northeast and Mid-Atlantic Sunday. Rainfall totals will be very light with these showers. Temperature-wise, the upper-level low approaching California will produce much below normal temperatures over California and Nevada. High temperatures are also forecast to be a few degrees below average in the Northwest. Meanwhile, temperatures should moderate and warm quite a bit over much of the Plains through Monday as upper-level ridging builds. Highs in the 70s are forecast as far north as South Dakota by Monday. The East can expect high temperatures that are about 10 degrees warmer than average. Tate Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php