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Post-Tropical Remnants Of Delta Continue Weaken, As The Heavy Rainfall Threat Diminishes Late Sunday Night

Post-Tropical Cyclone

Tropics Forecast Cone at 10:46 Sunday Evening, October 11th
Tropics Forecast Cone at 10:46 Sunday Evening, October 11th

Location 90 miles S of Knoxville Tennessee
Wind 15 mph
Heading E at 15 mph
Pressure 29.77
Coordinates 84.1W, 34.5N

Discussion

At 1100 PM EDT (0300 UTC), the center of Post-Tropical Cyclone Delta was located near latitude 34.5 North, longitude 84.1 West. The post-tropical cyclone is moving toward the east near 15 mph, and this motion is expected to continue tonight and Monday morning.

Maximum sustained winds are near 15 mph (30 km/h) with higher gusts. Some further weakening is possible tonight as a new surface low develops in the Carolinas, and Delta's surface low is expected to be absorbed by this new low pressure area on Monday.

The estimated minimum central pressure is 1008 mb (29.77 inches).

Tropics Satellite at 10:47 Sunday Evening, October 11th
Tropics Satellite at 10:47 Sunday Evening, October 11th

Watches and Warnings

Flood and Flash Flood Watches in and near the southern Appalachians will expire by midnight EDT Sunday night.

Tropics Models at 3:15 Monday Night, October 12th
Tropics Models at 3:15 Monday Night, October 12th

Land Hazards

RAINFALL: Across the Mid-Atlantic, 1 to 3 inches of rain, with locally higher amounts, are expected. Localized flash and urban flooding are possible, but overall hydrologic impacts are expected to be minimal.

Moderate to major river flooring will continue across the Calcasieu and Mermentau river basins in Louisiana through much of next week