It’s not perfect, but crowd sourced temperature observations on Wundermap is about as close as we can get to reliable data on hot days like today in SF. 🌡️
Today feels like a hinge day in the San Francisco forecast. Still mild enough to see the Pacific’s influence, but warm enough to hint at the hotter pattern building into Monday.
Bay Area weather is often less about a single temperature and more about watching which air mass is starting to win.
Unexpected weather AMA happening tonight 🌁
A Reddit post about Bay Area wind and microclimates turned into a whole thread of questions.
I’ll be answering them for a while later tonight (and maybe into tomorrow). If you’re curious about fog, marine layers, or strange atmospheric quirks around SF, feel free to join the conversation.
Small additional update: I finally dusted off my Reddit account and started participating again.
U/thedriftingnova
If you hang out over there, you can now find me in r/sanfrancisco and a few weather / climate threads talking Bay Area microclimates, infrastructure, and the weird atmospheric physics that make this place what it is 🌁
Feels good to reconnect with the community again.
Hi again Mastodon 👋
I’ve mostly been lurking the past couple years, but I’m stepping back into the conversation.
Meteorologist turned emergency management operator based in San Francisco 🌁
These days I spend a lot of time thinking about climate risk, city systems, and how information moves when things start going sideways.
Expect posts about weather signals 🌦️
urban resilience 🏙️
Bay Area infrastructure 🌉
and the occasional fog or food moment 🌁🍜
If you’re working somewhere in the climate / tech / civic systems ecosystem, say hi
From the Castro to Boyle Heights to Hillcrest, and from Ohlone to Kumeyaay lands, this winter won’t bring one hazard at a time. Climate change is stacking them together: fire, flood, and drought layered into the same season.
La Niña is expected, but this year it won’t act alone. A massive warm “blob” over the Pacific has entered like a new section of an orchestra, reshaping the rhythm of California’s winter.
📌 Readiness in a Changing Climate
Hazards won’t arrive one by one. They’ll overlap. That means:
• Reviewing stormwater in dense neighborhoods from the Castro to Hillcrest.
• Planning for fire and post-fire flood in Glendale, Inland Empire, East County.
• Building coastal resilience.
• Checking in with tribal nations: Kumeyaay (San Diego), Ohlone (Bay Area), Tongva (Los Angeles), and others whose lands face unique vulnerabilities.
🌐 Public Goods Matter
This forecast, based on CPC outlooks and NOAA anomaly maps, is only possible thanks to the National Weather Service and NOAA. These are public goods.
Mike Ely
