Bodega Bay Atmospheric Profiler Live NOAA PSL
11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM10 PMLatest 9 PM1k2k3k4k5k663FT
Inversion None
NOAA PSL BBY Source
April 16, Thursday
SF Marine Layer Multi-Source
1,001 ft MSL
Inversion height

Inversion near ~1001ft MSL — a lower deck is likely along the coast and bay edge.

Weak inversion (0.9°F) — marine layer may be mixing out.

Coastal T-Td spread ≤9.9°F — marine air mass present at surface. Strong coastal-inland contrast (15.3°F).

SST 55.9°F at Buoy 46026.

Cloud bases relatively steady.

Station Map California METAR/AWOS and available WeatherFlow stations with reports from the past 2 hours, plotted over a real basemap. The map opens focused on the Bay and Monterey corridor; zoom out for the rest of California. Blue dots indicate marine air, yellow dots indicate not-marine air, and the white number at upper right is the local T-Td spread when available.
Oakland Radiosonde Weather balloon launched twice daily from Oakland (00Z & 12Z). The inversion height marks where warming begins aloft.
Oakland Sounding Current sounding: Apr 16, 5:00 PM PDT (7h ago)
Next sounding: Apr 17, 5:00 AM PDT (5h out)
1,001 Inversion (ft)
1,401 Top (ft)
0.9°F Strength
Bodega Bay Profiler Live NOAA profiler data from Bodega Bay. When the inversion begins below the profiler floor, the profiler can confirm it is low but cannot resolve an exact starting height from that hour alone.
Bodega Bay Profiler Apr 16, 9 PM PDT
— Inversion (ft)
— Top (ft)
— Strength

No inversion detected in the latest Bodega Bay profile.

Buoy 46026 — Sea Surface Temp NDBC buoy 18nm west of SF. Cold ocean water cools the lowest layer of air, creating the temperature inversion that forms the marine layer. When SST is much cooler than air aloft, expect a strong, persistent marine layer.
Buoy 46026 SST 55.9°F Apr 16, 11:20 PM PDT
Sea Surface Temp (24h)
Cloud Base Trend Plots METAR cloud base heights over the last 12 hours. Rising bases suggest afternoon burnoff. Lowering bases mean the marine layer is deepening. Steady bases indicate a stable inversion.
Air Pressure Trend Average sea-level pressure over the last 24 hours from the coastal METAR stations only.
Air Pressure Trend (24h)
Coast-Valley Pressure Gradient Hourly coast-minus-valley sea-level pressure over the last 12 hours, using the valley-side inland METAR stations. Positive values mean pressure is higher at the coast.
Coast - Valley Pressure Gradient (12h)

What it measures: Each hourly point is the average sea-level pressure from KSFO, KHAF, KNUQ, KOAR, minus the average from KCCR, KLVK, KAPC, KSTS, KSJC, KSNS. Only stations with a valid pressure report in that hour are included.

What it means: A larger positive value usually means a stronger coast-to-valley onshore push, which favors marine air pressing farther inland. Values near zero mean the push is weak. A negative value means valley pressure is higher than the coast, which usually means little help for marine air moving inland. This is a pressure-push signal, not a direct measurement of marine-layer depth.



Temp °F °C