Thunderstorms Possible in Mariposa County, Oakhurst and Yosemite National Park Today
June 1, 2019 - The National Weather Service Hanford Office reports a few strong thunderstorms are possible in Central California during the afternoon and early evening hours Saturday.
In addition to frequent lightning, hail, heavy rain and gusty winds may accompany thunderstorms.
Any thunderstorm can produce intense rainfall which can lead to localized flooding.
Area Forecast Discussion National Weather Service Hanford CA 409 AM PDT Sat Jun 1 2019 .SYNOPSIS... An area of low pressure will move into Southern California today. This feature will influence the weather over our region through the weekend and bring a continued threat of afternoon and evening thunderstorms over mainly the mountain areas. WE are expecting a few thunderstorms to drift West in to the San Joaquin Valley late this afternoon and evening. Temperatures will remain generally seasonal for this time of year. Warmer than average temperatures are expected next week as high pressure builds over the area. && .DISCUSSION... The upper level low pressure center that has brought unsettled weather to the region will slowly drift to the south of Kern County today. This will create more of an easterly flow across the Central CA Interior. Very impressive SB Cape values of 1000 to 1500 j/kg are forecast across the Sierra this afternoon with another round of convection expected. We are becoming more concerned that the easterly flow will steer some of the storms into the SJV later this evening. HRRR simulated reflectivity product has been consistent with bringing heavy showers and thunderstorms into Tulare and eastern Kings county valley regions later today. WPC has the Sierra in an excessive rainfall outlook with PW`s approaching 1 inch in the Sierra. One factor with the low center being farther south will be the increased speed of the storms as they try to move out of the Sierra later today. Minor flooding is possible with the storms. Some storms may become severe later this evening. Another couple rounds of convection is expected on Sunday and Monday in the Sierra and possible into Kern County mountains. Upper level low pressure center slightly weakens and begins to open up into SRN CA by Monday evening. The track of the low continues southeast into AZ by Tuesday afternoon. EPAC ridging will build in over the area and bring some very warm temperatures across the region by mid week. Cant rule out an isolated shower along the crest with plenty of sublimation taking place. Most areas will see upper 90s on Wednesday, but an isolated triple digit is not out of the question. A trough will drop south from the PAC NW on thursday that will knock the temps down a few degrees. A more robust trough will plow south into the area on Friday with even more cooling expected for next weekend and dry SW flow aloft.Source: NWS
