These storm systems will bring late season snow, sleet and ice for portions of the northern Plains, upper Midwest and Great Lakes region. Meanwhile, where temperatures are warmer, severe thunderstorms are expected for areas of the Mississippi Valley into the southern Plains. Furthermore, combination of windy and dry conditions will raise fire weather concerns for the southern High Plains. Read More >
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840 FXUS66 KMTR 021901 AFDMTR Area Forecast Discussion National Weather Service San Francisco CA 1201 PM PDT Thu Apr 2 2026 ...New SHORT TERM, LONG TERM... .KEY MESSAGES... Updated at 1200 PM PDT Thu Apr 2 2026 - Offshore flow and the warming trend continues into the weekend - Cooler and potentially unsettled weather returns by the middle of next week && .SHORT TERM... Issued at 1200 PM PDT Thu Apr 2 2026 (This evening through Friday) Dry weather conditions are forecast for the remainder of the day in wake of the overnight/early morning frontal passage. Cooler air advecting in from the north will keep temperatures near seasonal averages this afternoon under mostly sunny sky conditions. Temperatures will range from the mid to upper 50s along northwest facing coastal locations to the mid to upper 60s across the interior this afternoon. Overnight, temperatures will cool into the upper 30s to lower 40s across the interior. However, offshore flow (especially in the mountains and hills) will return as the center of the mid/upper level low pushes into the Intermountain West. North-northeast winds with gusts of 40 to 55 mph in the North Bay Interior Mountains with gusts of 30 to 45 mph in the East Bay Hills, Eastern Santa Clara Hills, and Santa Cruz Mountains. So, less confidence for fog development in the interior valleys overnight. Friday we will see a warming trend return regionwide as temperatures warm 5-10 degrees above seasonal averages as high pressure over the eastern Pacific nudges eastward. In addition, stronger winds in the higher elevations will prevail on Friday aiding in the warming trend with afternoon maximum temperatures reaching the low to upper 60s near the coast and low to upper 70s across the interior and south- southwest facing coastal locations (such as the Santa Cruz region).&& .LONG TERM... Issued at 1200 PM PDT Thu Apr 2 2026 (Friday night through next Wednesday) High pressure will continue to build across the region this weekend with temperatures reaching 5-15 degrees above average (up to 20 in the warmer interior spots). This is as 850mb temperatures approach 12-15 degrees C. Offshore winds will also persist through the weekend, especially in the aforementioned locations, yet are forecast to be weaker than tonight/Friday morning. As the high pressure begins to shift eastward, temperatures are forecast to cool slightly early next week. There is the potential for a mid/upper level cut off low pressure system to approach from the west bringing cooler and unsettled weather conditions back to the region by the middle of the upcoming week. However, at this time, the greatest probability for rainfall is across the North Bay and coastal ranges where there is 15-25% probability of reaching or exceeding 0.25" of rainfall ending 5 PM Wednesday (next week). Therefore, no flooding or major impacts are expected. && .AVIATION... (18Z TAFS) Issued at 1057 AM PDT Thu Apr 2 2026 Dry conditions continue to move in across the forecast area. High pressure will steepen the ACV-SFO and WMC-SFO pressure gradients tonight and Friday. Areas of low level wind shear (llws) will develop over the Bay Area tonight and Friday morning, highest probability of llws will be over the North Bay. VFR in the 18z TAFs. Vicinity of SFO...VFR. West wind 15 to 25 knots in the afternoon and early evening. West to northwest wind decreasing to 5 knots tonight and early Friday morning, shifting to northeasterly around 5 knots Friday morning. SFO Bridge Approach...Similar to SFO. Monterey Bay Terminals...VFR. West to northwest winds 10 to 20 knots decreasing and becoming light and variable tonight then southeasterly 5 to 10 knots beginning early Friday morning. && .MARINE... (Today through Tuesday) Issued at 1044 AM PDT Thu Apr 2 2026 Fresh to strong breezes developing over the coastal waters today including across the bays later this morning and afternoon. The stronger winds will result in hazardous conditions. Northerly breezes diminish and seas abate by the weekend. && .MTR WATCHES/WARNINGS/ADVISORIES... CA...None. PZ...Small Craft Advisory from 3 PM this afternoon to 9 PM PDT this evening for SF Bay N of Bay Bridge. Small Craft Advisory until 3 AM PDT Friday for Mry Bay-Pigeon Pt to Pt Pinos 0-10 nm-Pt Arena to Pt Reyes 0-10 nm-Pt Pinos to Pt Piedras Blancas 0-10 nm-Pt Reyes to Pigeon Pt 0-10 nm. Small Craft Advisory until 3 PM PDT Friday for Pt Arena to Pt Reyes 10-60 NM. Small Craft Advisory until 9 AM PDT Friday for Pigeon Pt to Pt Pinos 10-60 NM. && $$ SHORT TERM...RGass LONG TERM....RGass AVIATION...Canepa MARINE...Canepa Visit us at www.weather.gov/sanfrancisco Follow us on Facebook, X, and YouTube at: www.facebook.com/nwsbayarea x.com/nwsbayarea www.youtube.com/nwsbayarea |
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