Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 400 AM EDT Tue Mar 25 2025 Valid 12Z Tue Mar 25 2025 - 12Z Thu Mar 27 2025 ...Significantly above average, warm to hot early Spring temperatures will expand over the western/central U.S. this week with numerous monthly record highs possible... ...Rain across northwestern Washington state today is expected to taper off today but the next wave of moisture is forecast to arrive later on Wednesday... ...Watching for an increasing threat of heavy rain moving into southern Texas by Thursday morning... With the departure of a low pressure system off New England, a large portion of the mainland U.S. will be under relatively quiet weather for the next couple of days. While a broad upper-level trough will keep the northeastern quadrant of the country colder than normal behind the departing low, an upper-level ridge is forecast to build over the western U.S. and expand toward the central U.S. This will bring an early Spring heat wave across the Desert Southwest while anomalously warm temperatures expand through the West and then into the Plains. In fact, temperatures will soar well up into the 90s to near 100 degrees this afternoon across the Desert Southwest which will challenge or possibly break monthly records at many locations. More record high temperatures are also possible this afternoon for the lower-elevations up and down the West Coast as temperatures reach into the 70s and 80s just inland. The anomalous warmth will also expand eastward into the central and southern Plains where 90s will be common in Texas this afternoon. Wednesday should see the core of the warm air shifting farther inland into the Great Basin, Intermountain West, and the northern and central Rockies where record high temperatures into the 70s to near 80 are most likely. In contrast to the anomalous warmth in the West, colder than normal conditions with mixed rain and snow will continue across the Great Lakes and interior Northeast through the next couple of days. Multiple low pressure waves traversing along diffused frontal boundaries will bring some light rain across the Ohio/Tennessee Valleys and the central Appalachians today where wet snow is possible at higher elevations. By this evening, a low pressure center will begin to consolidate as it tracks quickly across the Mid-Atlantic along with a period of rain and gusty winds. The low will move rapidly out to sea overnight into Wednesday morning, which will usher colder air down the East Coast under gusty northwesterly winds through Thursday morning. Meanwhile, some thunderstorms can be expected to develop across Oklahoma into northern Texas Tuesday night into Wednesday morning ahead of a frontal wave. By Wednesday night into Thursday morning, moisture will begin to gather over southern Texas with the arrival of a subtropical jet stream across Mexico. Showers and thunderstorms are forecast to become more numerous and widespread by Thursday morning when the threat of heavy rain will be increasing. Meanwhile, a rather large and intense cyclone will come into picture over the eastern Pacific. Rain well ahead of this system is forecast to reach the West Coast by Wednesday evening along coastal Pacific Northwest and northern California. By Thursday morning, winds are expected to increase as the rain continues in these areas. Kong Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php