Projected rainfall totals for Mariposa: 0.10" to 0.25"
Projected rainfall totals for Oakhurst: 0.10" to 0.25"
Projected rainfall totals for Yosemite Valley: 0.10" to 0.25"
April 19, 2020 - The National Weather Service Hanford Office reports a rather weak storm system will impact Central California Monday afternoon and Monday night.
Two to four inches of snow is possible in the Southern Sierra Nevada above 7,000 feet.
The majority of this precipitation will fall Monday afternoon and Monday evening.
Area Forecast Discussion National Weather Service Hanford CA 138 AM PDT Sun Apr 19 2020 .SYNOPSIS...Dry weather with seasonal temperatures will prevail today. The next storm system is expected to impact Central California Monday and will bring a chance of showers with a few mountain thunderstorms Monday afternoon and evening. Some mountain showers could linger on Monday night into Tuesday. Otherwise, dry weather along with a warming trend are expected Wednesday through next weekend. && .DISCUSSION...Mainly seasonal temperatures and dry conditions will prevail today before the next low pressure system arrives on Monday. Low cloud cover persists over the Sierra Nevada and east side of the San Joaquin Valley at this time, although this will likely clear later this morning. Some breezy conditions are possible in the Kern County desert by this evening, although we are not expecting Wind Advisory criteria at this time. Daytime high temperatures on Monday will likely lower to a few degrees lower than today`s as a shortwave trough ahead of an upper-level low that will eventually pass into the region. This trough will provide enough lift for a good chance of showers over the mountain areas, and isolated thunderstorms are possible over portions of the Sierra Nevada. In addition, snow levels will be relatively high for this system, or mainly around 7,000 feet. A slight chance of showers is mentioned elsewhere, including into the Central Valley. The upper-level low will move southeastward over our forecast area during Monday night into Tuesday morning, so low clouds and showers due to upslope flow will likely continue at least in the Kern County mountain areas and in parts of the southern Sierra Nevada. The upper low will move over S NV/NW AZ by Tuesday afternoon, so clouds and precipitation should clear over these mountain areas. By the middle of the week, temperatures are projected to rise back to above average and continue to warm through next weekend. The upper-level ridge will build along the coast and gradually shift inland over the next several days, so this will likely produce the warming trend. The warmest temperatures of this year so far are possible by Saturday, as the warmest locations in the San Joaquin Valley and the Kern County desert may reach highs in the upper 80s to near 90 degrees. Much of our portion of Central California will likely reach high temperatures of 10 to 15 degrees above seasonal averages. There is the potential for warm temperatures and dry conditions to continue into next week.Source: NWS
