Friday, October 27, 2006

Rain, wind, and maybe some snow


A very intense storm system is in the making right now. The area of low pressure (997mb) forecasted to phase with another low on the northern jet, is currently centered on the western side of the border of Tennessee and Kentucky. This low will bomb out tomorrow, going sub 980 for sure and by the forecast from the CPC, sub 970 (strong category 2 hurricane). The track has made a notable shift to the west which is bad news for the snow-lovers. There is still a chance for a few flakes tonight in the higher elevations of SW NH before rain takes over by day-break. Rain and wind will be the story throughout the day Saturday. High Wind Watches and Warnings and Wind Advisories are up for about 1/5 of the nation in the northeastern sector. Winds from this storm could come sustained at 40 to 45mph for a couple of hours Saturday and Saturday Night with gusts possibly reaching 65mph on the coastal plain. Here in SW NH, a high wind watch and wind advisory are in effect with the possibility of gusts to 45mph throughout the day tomorrow and then up to 55mph to 60mph behind the storm Saturday Night into Sunday. There is also the possibility that a squall line could form Saturday Afternoon with a gust front bearing winds over 70mph. Details posted in the severe weather outlook page.
Colder air will flow in behind the storm for Sunday. Precipitation could wrap up Saturday Night and Sunday Morning as a period of wet snow. Now accumulation is expected. The cold will stick around for Monday, before a quick burst of warmth comes in for Tuesday and Wednesday. Another storm system will bring a chance for rain (and once again a possibility of overnight snow) for Wednesday Night and Thursday. Colder air will then return to the area.
Stay tuned for updates throughout tonight and tomorrow on this storm.

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