Well, our models may have had the right idea of the threat of snow, but the recent runs clearly have a serious timing error. The snow will arrive 4-5 hours earlier than expected.
The latest radar image (2:27 PM) shows the story--the precipitation shield from the warm front has reached the south Sound. Once precipitation starts aloft, it takes about an hour to reach the surface (need to humidify the layer below)
The latest visible satellite image shows an impressive cloud band with the warm front.
Let me show you some traffic cams.
It has been snowing in Portland for hours.
Vancouver
Longview
Here is the Chehalis Airport
Centralia.
Dupont, north of Olympia at 3:30
It should starting snowing at the surface in Olympia by 3PM. At the current rate of progress, the snow will get to Tacoma around 4 PM and Seattle by 5-5:30 PM.
There appears to be multiple bands...the first band is producing the above snow. It appears to be weakening over southern Puget Sound...and slowed down. So it looks like Seattle commute will be ok. The second band, which should arrive later (if the models are right), well be more of a threat for Seattle and points north...later in the evening.
The latest radar image (2:27 PM) shows the story--the precipitation shield from the warm front has reached the south Sound. Once precipitation starts aloft, it takes about an hour to reach the surface (need to humidify the layer below)
The latest visible satellite image shows an impressive cloud band with the warm front.
Let me show you some traffic cams.
It has been snowing in Portland for hours.
Vancouver
Here is the Chehalis Airport
Centralia.
It should starting snowing at the surface in Olympia by 3PM. At the current rate of progress, the snow will get to Tacoma around 4 PM and Seattle by 5-5:30 PM.
There appears to be multiple bands...the first band is producing the above snow. It appears to be weakening over southern Puget Sound...and slowed down. So it looks like Seattle commute will be ok. The second band, which should arrive later (if the models are right), well be more of a threat for Seattle and points north...later in the evening.
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