December 15, 2018 - The National Weather Service Hanford office projected precipitation amounts for Sunday evening through Monday afternoon ahead of and along an approaching cold front.
Area Forecast Discussion National Weather Service San Joaquin Valley - Hanford CA 321 AM PST Sat Dec 15 2018 .SYNOPSIS... Dry weather will persist today through Sunday morning. A cold front will approach California Sunday afternoon. This cold front will be responsible for valley rain and mountain snow Sunday night and Monday. Dry weather will return to Central California Monday night and persist through at least Friday. && .DISCUSSION... An upper-level ridge of high pressure will be located over the Pacific Northwest today. This ridge of high pressure aloft will amplify as it moves eastward tonight and Sunday morning. A cold front will approach the California coastline Sunday afternoon. This cold front will move eastward through Central California Sunday night into Monday morning. Rain amounts should vary from just under one tenth of an inch in the southern portion of the San Joaquin Valley to around one half of an inch in the northern portion of the San Joaquin Valley, with slightly higher values in the foothills. Ferguson burn scar flooding is possible Sunday night and Monday morning. Rain should turn to snow around 6,000 feet. A Winter Weather Advisory may be required for the Sierra Nevada from Yosemite to Kings Canyon for Sunday night and Monday morning. Due to the marginal nature of this event, a Winter Weather Advisory will not be issued at this time. The aforementioned cold front will move eastward through the Great Basin Monday afternoon and Monday night. An upper-level area of high pressure will be centered near latitude 30 North, longitude 120 West Tuesday through at least Thursday. A weak trough of low pressure aloft may pass through Central California Thursday night or Friday. Dry weather is expected Monday night through at least Friday, with late night and early morning Tule Fog a distinct possibility.
Source: NWS
