Projected rainfall totals for Mariposa: 0.50" to 1.00"
Projected rainfall totals for Oakhurst: 0.50" to 1.00"
Projected rainfall totals for Yosemite Valley: 0.50" to 1.00"
March 19, 2019 - The National Weather Service Hanford Office reports the next storm system will impact Central California Tuesday night through Thursday morning.
The majority of this projected precipitation will fall late Tuesday night and Wednesday. Snow levels should start at about 7,000 feet Tuesday night, before falling to around 5,500 feet Wednesday.
Snow levels should drop to near 5,000 feet Wednesday night into Thursday morning.
Per NWS:
...As for the onset of precipitation, the latest high resolution modeling holds off on any rain until around sunset over the western parts of the forecast area and over the Sierra Crest. The main band of rain looks to push quickly northeast into the area during the evening hours with lingering precipitation mainly affecting the Sierra overnight. The low pressure center associated with the trough is projected to lift northeast and just skirt the Bay Area during the late night and early morning hours on Wednesday. At this time the trough of low pressure becomes extremely negatively tilted with a pronounced northwest to southeast orientation. This leads to models forecasting a secondary low pressure center to move into Central California from the northwest on Wednesday night into Thursday morning with some colder air aloft with will increase instability. Some thunderstorm activity seems likely Wednesday afternoon and evening as this occurs. Shower activity will continue into Thursday evening before the secondary low moves east of the area and shortwave ridging moves in from the west on Friday. For the weekend, the next seemingly weaker trough of low pressure arrives on Saturday and the emphasis from this feature looks to be Northern California however at least a chance of some rain is possible well into Central California on Saturday. This system looks weak and very fast moving leaving Sunday high and dry under weak ridging. Models after the weekend diverge as to the timing and whether the next big Pacific low moves into the area on Tuesday and Wednesday per the GFS model or Wednesday through Thursday as advertised by the ECMWF model. Either way, the active wet season continues.
Source: NWS