Summary- Most rains focus on the SierraNV (rain and snow), and N California as far S as the Bay Area. Troughs and fronts alternate with periods of warm dry upper high pressure from April 13th through the 26th. Our CFSDailyAI system suggests some showers in the central and N SierraNV from April 28-30th, then into S California on May 1-2. Another rain with some TSTMS is suggested in the SierraNV...
Summary- Fronts come through with significant rains on April 5-7th, rains on 10th, showers in N California on 12th, and some more showers in the N SierraNV and N California on the 15th and 18th. Support continues in the mid-latitude Pacific sea surface temperature field, for high pressure near 145-160W 37-43N, a trough near 135-128W with a shift of active westerlies further north to focus on NW...
Summary- Mostly dry and somewhat inactive period through April 3, with a minor cold front on the 27th. Unusually warm and dry.
Summary- Active development of storms occurs during March 15-22nd, followed by return of dry upper high pressure, and a turn to very warm conditions.
Summary- The MJO Cycle that was in an inactive phase on March 5-9th heads into a more active phase during the 12-20. This will tend to encourage development of storms during the 11-23. Support continues in the mid-latitude Pacific sea surface temperature field for high pressure near 170W, a longwave trough near 135-140W and moist flow into N and central California with significant rains.
Summary- The MJO Cycle was heading into an inactive phase on Feb 26. This should discourage development of storms and active fronts into California during March 4-10. Support continues in the mid-latitude Pacific sea surface temperature field, for high pressure just south of the Aleutians, and increased westerlies into the Pacific Northwest coast and N California during the first part of March.