####018004190#### FNUS86 KMTR 211151 FWLMTR ECCDA Discussions National Weather Service SAN FRANCISCO BAY AREA 451 AM PDT Thu May 21 2026 ##################################################################### ## ## ## Discussions from the latest FWF below ## ## ## ##################################################################### ...Discussion from SFOFWFMTR... Shallow marine layer has reformed near the immediate coast brining slightly cooler and wetter conditions. Inland areas will remain critically dry this afternoon. Additionally, an afternoon onshore push will stronger winds to inland valleys and passes. Friday through the Memorial Day weekend will feature more widespread cooling and a deepening marine layer with night and morning low clouds and fog. ...Discussion from SFOFWFEKA... Heat peak today across the interior with high tempeartures climbing into mid 90s. Conditions will remain very dry with RH between 20 and 30 percent. Aside from some moderate north breezes along shore, winds will be gentle and terrain driven with few gusts even reaching 10 mph. Conditions will ease this weekend with more marine influence pushing inland. A weak shortwave disturbance will bring up to a 10 percent chance for an isolated thunderstorm over eastern Trinity County Friday afternoon. ##################################################################### ## ## ## Complete a discussion for each ECCDA segment below ## ## When done click transmit, product sent as KMTRFWLMTR ## ## ## ##################################################################### ECC010-220000- St Helena ECC Dispatch- DISCUSSION FOR Marin and Sonoma and Napa Counties 451 AM PDT Thu May 21 2026 Shallow marine layer has reformed near the immediate coast brining slightly cooler and wetter conditions. Inland areas will remain critically dry this afternoon. Additionally, an afternoon onshore push will stronger winds to inland valleys and passes. Friday through the Memorial Day weekend will feature more widespread cooling and a deepening marine layer with night and morning low clouds and fog. $$ ECC014-220000- Morgan Hill ECC Dispatch- DISCUSSION FOR Alameda and Contra Costa and Santa Clara Counties 451 AM PDT Thu May 21 2026 Shallow marine layer has reformed near the immediate coast brining slightly cooler and wetter conditions. Inland areas will remain critically dry this afternoon. Additionally, an afternoon onshore push will stronger winds to inland valleys and passes. Friday through the Memorial Day weekend will feature more widespread cooling and a deepening marine layer with night and morning low clouds and fog. $$ ECC013-220000- Felton ECC Dispatch- DISCUSSION FOR Santa Cruz and San Mateo Counties 451 AM PDT Thu May 21 2026 Shallow marine layer has reformed near the immediate coast brining slightly cooler and wetter conditions. Inland areas will remain critically dry this afternoon. Additionally, an afternoon onshore push will stronger winds to inland valleys and passes. Friday through the Memorial Day weekend will feature more widespread cooling and a deepening marine layer with night and morning low clouds and fog. $$ ECC018-220000- Monterey ECC Dispatch- DISCUSSION FOR Monterey and San Benito County 451 AM PDT Thu May 21 2026 Shallow marine layer has reformed near the immediate coast brining slightly cooler and wetter conditions. Inland areas will remain critically dry this afternoon. Additionally, an afternoon onshore push will stronger winds to inland valleys and passes. Friday through the Memorial Day weekend will feature more widespread cooling and a deepening marine layer with night and morning low clouds and fog. $$