Snow, lightning, hail, sun, rain -- it's March Madness, Seattle style

Snow, lightning, hail, sun, rain -- it's March Madness, Seattle style
SEATTLE -- March Madness is here, but this kind doesn't involve brackets and trying to solve which No. 12 seed will beat the No. 5 seed.

Instead, it's trying to solve the puzzle of how many items we'll be subjected to in Mother Nature's bag of tricks.

If you're preparing a checklist, be sure to include, rain, sun, hail, lightning, and even some snow -- it's all in the cards Thursday and Friday.

Colder air continues to push into the region behind Wednesday's storm and it has brought snow levels down to roughly 500-1,000 feet, which can even temporarily drop lower during heavy showers.

In addition, conditions remain very favorable for more Puget Sound Convergence Zone development -- which is really where the snow chances come in.

If a convergence zone is intense enough, it can bring snow levels down to the surface and leave a quick dusting to perhaps even 1 inch of wet snow accumulation.

In between the showers though, temperatures will warm back into the 40s so it'll rapidly melt. And ground temperatures remain warm so snow will have better chances sticking to grassy surfaces.

The convergence zone spent much of the day Thursday in its usual spots of Snohomish County into perhaps northern King County, but as expected a wind shift late Thursday afternoon pushed the area for zone development further south into central King County (Seattle-Bellevue). It brought some sticking snow to North Bend, Eatonville and Tiger Mountain. In fact, SR-18 was closed for a short period Thursday evening at Tiger Mountain due to snow and spun out semi-trucks. The roadway has since reopened.

The zone could continue to slide further south -- maybe even as far south as Tacoma late Thursday night -- even into early Friday morning. Thus the higher hilltops may see some light accumulations.

Convergence zones are very fickle and can go through multiple periods of development and weakening so they are notoriously difficult to forecast and keeping an eye on the radar Thursday would be a good suggestion. I'll be giving frequent updates on Twitter @ScottSKOMO.

Outside those areas, Thursday night will feature a mix of moderate-to-heavy showers and clearing periods. Again, those showers could contain lightning, hail and perhaps a rain/snow mix or straight wet snow. Depending on how intense the shower is, you could get a quick accumulation of about an inch if the rate of snow overwhelms the melting but generally little to no accumulations are expected -- especially near Puget Sound -- and whatever falls will quickly melt when the shower stops.

We begin to run out of moisture on Friday with clearing skies and decreasing chance of showers (still a chance of thunderstorms/wet snow showers, but much fewer in number). However, temperatures will remain unseasonably cold with lows Friday morning in the low-mid 30s and highs in the mid 40s. Temperatures Friday night could drop into the upper 20s in the outlying areas to the low-mid 30s in the city. We'll slowly moderate through the weekend.