Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 307 PM EST Mon Feb 05 2024 Valid 00Z Tue Feb 06 2024 - 00Z Thu Feb 08 2024 ...Heavy rain with life threatening flash flooding will continue for Southern California into Tuesday... ...Heavy Snow to impact the major mountain ranges from the Sierra Nevada to the Central Rockies through mid-week... ...Temperatures will continue to run well above average from the Great Plains to the Appalachians with record breaking warmth for parts of the Upper Midwest... A slow moving and relatively narrow axis of anomalous moisture will continue to focus across Southern California over the next 12 to 24 hours, maintaining a significant threat for life threatening flash flooding across the Transverse Ranges and adjacent locations. Areas of moderate to heavy rain are expected to remain in place near a cold front crossing the southern coast of California, just ahead of an upper level trough axis. Additional rainfall totals through Tuesday of 1-3 inches are expected for the urban corridor from Los Angeles to San Diego and into the foothills of the Transverse Ranges, with locally higher rainfall totals in areas of higher terrain. This will fall on top of the 5 to 10+ inches of rain which has impacted Southern California over the past 48 hours. Flooding of streams and rivers along with mudslides are expected to remain a threat. While rain will continue for Southern California on Tuesday, the intensity is expected to be lighter than what occurred over the weekend as the storm system moves east into the Desert Southwest, but the potential for flash flooding and higher rainfall rates will expand into western Arizona, southern Nevada and southwestern Utah. Heavy snow and strong winds will continue to generate near impossible travel conditions for elevations at/above 5000-7000 ft for southern portions of the Sierra Nevada into the mountains of central Nevada. As the upper trough and surface cold front shift eastward through mid week, heavy snow will spread eastward into the higher elevations of Utah, Idaho, Wyoming, Colorado and New Mexico. The central and eastern U.S. will remain fairly dry after a powerful storm system exits from the Southeast into the western Atlantic tonight. Upper level ridging over the central U.S. will continue anomalously warmth for the Northern/Central Plains and Upper Midwest through Wednesday. High temperatures in the 40s and low 50s are expected for the Upper Midwest on Tuesday and Wednesday, 20-30 degrees above average. which will likely break daily record high temperatures. Highs temperatures generally from the Rockies to the Northeast will be above average and mild. Otto Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php