wplg logo

Post-Tropical Cyclone Nicholas On The Central Louisiana Coast

Post-Tropical Cyclone

Tropics Forecast Cone at 2:05 Thursday Afternoon, September 16th
Tropics Forecast Cone at 2:05 Thursday Afternoon, September 16th

Location 115 miles SSE of Alexandria Louisiana
Wind 25 mph
Heading N at 2 mph
Pressure 29.74
Coordinates 91.7W, 29.8N

Discussion

At 1000 AM CDT (1500 UTC), the center of Post-Tropical Nicholas was located near latitude 29.8 North, longitude 91.7 West. The circulation associated with Nicholas was moving slowly to the north around 2 mph (4 km/h) and this motion is expected to continue through Friday. The heaviest rainfall associated with the post-tropical low will continue to be well removed to the east of the circulation today. However, there is some chance for thunderstorm development closer to the cyclone center, and these thunderstorms could pose a risk of locally heavy rainfall, while additional thunderstorms continue to move northeast from the Gulf of Mexico across southeast Louisiana, southern Mississippi and Alabama, to the Florida Panhandle.

Maximum sustained winds are near 25 mph (35 km/h) with higher gusts. The system is forecast to remain relatively weak through 48 hours.

The estimated minimum central pressure is 1007 mb (29.74 inches).

Tropics Satellite at 3:31 Thursday Afternoon, September 16th

Watches and Warnings

Flash Flood Watches are in effect along the central Gulf Coast from portions of southeast Louisiana, across southern Mississippi and Alabama, to the Florida Panhandle.

Tropics Models at 3:10 Thursday Afternoon, September 16th

Land Hazards

RAINFALL: Nicholas is expected to produce additional rainfall of 2 to 4 inches across the central Gulf coast Friday, with isolated amounts of 6 inches possible. Flash flooding impacts, especially in urban areas, are possible across these regions.

Widespread minor river flooding is expected, while scattered moderate river flooding is possible, across portions of southeastern Louisiana, southern Mississippi, southern Alabama, and the Florida Panhandle.

For the latest rainfall reports and wind gusts associated with Post-Tropical Cyclone Nicholas see the companion storm summary at WBCSCCNS4 with the WMO header ACUS44KWBC or at the following link:

Https://www.wpc.ncep.noaa.gov/discussions/nfdscc4.html