Wednesday, June 15, 2011

June 15, 2011 Brief Update

Forecast Overview:

- Tomorrow will bring mostly sunny skies once again with highs similar to today, but by Friday, a low pressure will approach the area, bringing showers and thunderstorms. Rain will begin on Thursday night and will continue occasionally throughout the day on Friday. No severe weather is expected at this time.

- Other than the potential for an isolated storm on Saturday, this weekend will be mainly dry. Partly sunny skies are expected with temperatures reaching the upper 70s to mid 80s across the area, with a few upper 80s possible on Sunday in the immediate NYC area. The NAM/GGEM models have been indicating that an area of rain and thunderstorms moves through on Sunday, and while at this time, this solution has little support, it will be watched in case it becomes a new trend. A colder air mass behind Friday's storm will move into the region, and while it will not bring a large difference in temperatures, it will bring colder temperatures by Monday, with highs dropping into the lower 80s in the immediate NYC area.

- Significant heat will begin to build up in the southern/central US from Sunday into early next week. This ridge will spread into the region eventually, but will be delayed at first as Friday's storm moves into SE Canada, bringing a colder air mass into the NE for the weekend through early next week as previously mentioned, keeping the ridge stuck in the central US. By at least Wednesday, when the low pressure will move towards the Great Lakes, the heat will be able to spread into the area. While the worst of the heat should stay to the west of the area, temperatures may return into the 90s once again in the warmer case scenario on Wednesday and/or Thursday. The cold front should reach the area late next week, bringing a risk of thunderstorms. More information will be posted as details become clearer.

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