It actually was quite small. To get some perspective, here is a wider view. See it due west of the NW tip of the Olympic Peninsula and southwest of Vancouver Island? It was about 60 km (36 miles) across.
A few hours later it started to dissipate but still had an other-worldly look! (again, giving you both views)
Want to see an animation of this "mini"hurricane? Check out this animated gif (special thanks to Jeff Knecht for bringing it to my attention):
Earlier in the morning the Windsat sScatterometer satellite passed over the region (scatterometers useicrowave radiation to measure capillary wave amplitude and from that wind speed/direction). This image, or roughly 8 AM, suggests some rotation off the northern Washington coast (click on image to make it larger)
Anyway, an interesting phenomenon
Lunchtime Climate Series
Finally, if anyone is interested, the Seattle Chamber of Commerce is continuing its lunchtime climate series in downtown Seattle next week.
More more information, the link is here.