Eyes Over Puget Sound

Unusually warm water temperatures continue in central and south Puget Sound. River flows remain lower than normal, especially the Fraser and Skagit rivers. Thus, with estuarine circulation much weaker, Puget Sound waters stay put. Mats of organic debris persist in Central Sound near Port Madison. Red-brown and brown blooms are now very strong in southern inlets and jellyfish patches are exceptionally numerous and large. Explore media coverage of unusual Puget Sound conditions including jellyfish.

Unusually warm water temperatures continue in central and south Puget Sound while Willapa Bay returns to expected water temperatures as a result of stronger coastal upwelling. Extensive mats of organic debris develop in many places, particularly in Central Sound overlapping with a fading Noctiluca bloom. King County confirms Noctiluca and shares plankton species information. Red-brown and brown blooms are going strong in southern inlets and around the San Juan Islands. Our inspiring WCC Intern gets on boats, into the air, and to the lab.

Record warm water temperatures and low oxygen continue in Ecology’s Puget Sound marine monitoring station network. Record low stream flows result in visibly low river discharge into Puget Sound, in particular for the Puyallup River. Abundant sun and unusually warm water temperatures fuel phytoplankton blooms in many areas. Bright orange Noctiluca blooms are surfacing in the Commencement Bay area and around Port Madison. Finger inlets of South Sound support extensive patches of jellyfish.

Warm waters from “The Blob” in Puget Sound combine with drought conditions as warm air has left little snow to feed the rivers. Water temperatures throughout Puget Sound are the highest in 25 years and oxygen is exhibiting record lows. High suspended sediment in the north is still coming in from the Fraser River. Otherwise, the surface waters appear very clear due to recent low river flows and weak blooming activity. A red bloom is present in Sinclair Inlet and in some confined bays. Patches of jellyfish, however, are going strong in inlets of South Sound and Sinclair Inlet. What does this all mean for salmon? Get to know some intertidal critters!

Puget Sound is feeling the heat! Starting in October, temperatures are the highest on our record since 1989. Salinity and oxygen are much lower. Recent rains have rivers flowing high. Aerial views show dramatic sediment loads from rivers mixing into otherwise blue water. But don’t be fooled – by summer, snow-fed rivers are expected to run significantly below normal, with implications for Puget Sound water quality. For details, explore the special Drought Effects segment. Spring blooms are visible only in some confined bays. Jellyfish are going strong in finger inlets of South Sound. Glimpse Puget Sound’s glacial history.

The ocean and air remain warm with sunshine and dry weather across the region. As a result, Puget Sound is a lot warmer going into the new year. Hood Canal is responding with temperatures warmer than previous measurements, breaking its low temperature stint. First signs of growing phytoplankton are coloring the water green. Patches of jellyfish are overwintering in finger inlets of South Sound. Tidal fronts and suspended sediment are visible amidst the stunning San Juan Islands scenery. A sediment-rich water mass is trapped in Rosario Strait. Check out the South Sound Estuarium and the many reasons we love Puget Sound!