![]() ![]() The end result from the blocked, semi-stationary pattern was the series of storms riding up the eastern seaboard producing excessive rains over especially eastern North Carolina and Virginia from the 27th and 28th, with moderate rains over New York and New England, to the blockbuster rounds of rain that followed from the 29th through October 1. Stuck between the mean trough position over the Southeast, and the sub-tropical ridge over the central Atlantic was a stalled front where several surface storms developed and tracked north, feeding on the moisture rich tropical air, which not only had it's origins over the Caribbean, but also a connection to the sub-tropical Pacific. The combined flow around the cut-off lows and the strong sub-tropical ridge over the central Atlantic created a narrow channel of deep tropical southerly flow along the Atlantic seaboard. 27 through Thursday Sept 29 over the Tennessee valley. ![]() A series of cut-off low pressure systems formed within the trough from early Monday Sept. 8.5" of rain fell on Maplecrest with the elevated total due to local terrain enhancement during the stormĪn anomalously strong low pressure trough at the jet stream level carved itself out over the southeast U.S., due in large part to strong high pressure blocking which existed over the sub-tropical Atlantic. Photographer: WeatherNet 6 spotter Jere Baker: Flooding in Maplecrest, NY, Greene County at the flood control dam, 2pm, Friday October 1, 2010. Minor flooding also occurred along the Mohawk and Hudson rivers with moderate flooding along the Esopus Creek in Ulster County. As it was, with so much water coming so quickly, flooding was widespread, with most of it, however, being minor including many flooded roads and basements, along with many of the region's smaller rivers and streams, such as the Canajoharie Creek, the Schoharie Creek, the Rondout Creek, the Mettawee river, the Hoosick river, and the Batten Kill, going into minor flood stage. ![]() drought monitor in western New England) the 3" to 5" rainfall with locally up to 8.5" all coming in a fast 24 hour window, would have likely yielded significant and potentially major regional flooding. Had antecedent conditions not been abnormally dry across the region (moderate drought conditions according to the U.S. A unique upper level jet stream pattern evolved over the eastern United States in the days preceding what actually were two significant rain events for the East Coast and the Northeast, with the event from the 30th of September through October 1 yielding enormous amounts of rainfall for eastern New York and western New England. ![]()
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