646 AGUS74 KWCO 301252 HMDNWC National Hydrologic Discussion - EXPERIMENTAL NWS National Water Center - Tuscaloosa AL 700 AM CST TUE DEC 30 2025 Update... Small changes to the selection in California were made this morning, both extending slightly to the north and south. //JAW Previous Discussion as follows: ...Urban and small stream flooding possible across portions of California beginning on Wednesday...Small stream and river flooding possible across southeast Alaska through today... .California... A series of Pacific systems are forecast to affect California starting on Wednesday, with multiple rounds of rain and high elevation snow expected through the weekend. Liquid precipitation amounts are generally forecast to be 1 - 2" each day, and thus widespread significant hydrologic impacts are not expected. Isolated urban and small stream flooding will be the primary concerns. Latest HEFS data suggest that riverine flooding is not a significant concern. .Alaska... A combination of rain (3 - 5", locally up to 7") and snowmelt across portions of Southeast AK may generate small stream and minor to moderate river flooding through today. //Ryan Additional National Water Center products are available at www.weather.gov/owp/operations $$