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FLORIDA
STORMS
Hurricane Teddy
LOCATED
625 MI ENE OF THE LESSER ANTILLES
WINDS
105 MPH
PRESSURE
970 MB
MOVING
NW AT 12 MPH
From the National Hurricane Center at 500 AM AST Thu Sep 17 2020
TEDDY STRENGTHENS OVER THE OPEN ATLANTIC
TAP LINKS BELOW TO FOCUS
Alerts
hazards
summary
DISCUSSION

There are no coastal watches or warnings in effect.

There are no coastal watches or warnings in effect.

SURF: Large swells generated by Teddy are reaching the Lesser Antilles and the northeastern coast of South America and should spread westward to the Greater Antilles, the Bahamas, Bermuda, and the east coast of the United States by the weekend. These swells are likely to cause lifethreatening surf and rip current conditions. Please consult products from your local weather office.

SURF: Large swells generated by Teddy are reaching the Lesser Antilles and the northeastern coast of South America and should spread westward to the Greater Antilles, the Bahamas, Bermuda, and the east coast of the United States by the weekend. These swells are likely to cause lifethreatening surf and rip current conditions. Please consult products from your local weather office.

At 500 AM AST (0900 UTC), the center of Hurricane Teddy was located near latitude 18.3 North, longitude 52.3 West. Teddy is moving toward the northwest near 12 mph (19 km/h), and this general motion is expected to continue through the weekend.

Maximum sustained winds are near 105 mph (165 km/h) with higher gusts. Additional strengthening is forecast during the next couple of days, and Teddy could become a major hurricane Thursday night or Friday.

Hurricaneforce winds extend outward up to 35 miles (55 km) from the center and tropicalstormforce winds extend outward up to 255 miles (405 km).

The estimated minimum central pressure is 970 mb (28.65 inches).

At 500 AM AST (0900 UTC), the center of Hurricane Teddy was located near latitude 18.3 North, longitude 52.3 West. Teddy is moving toward the northwest near 12 mph (19 km/h), and this general motion is expected to continue through the weekend.

Maximum sustained winds are near 105 mph (165 km/h) with higher gusts. Additional strengthening is forecast during the next couple of days, and Teddy could become a major hurricane Thursday night or Friday.

Hurricaneforce winds extend outward up to 35 miles (55 km) from the center and tropicalstormforce winds extend outward up to 255 miles (405 km).

The estimated minimum central pressure is 970 mb (28.65 inches).

Several passive microwave overpasses have revealed that Teddy has developed a 25-nmi-wide closed eye, while GOES-16 infrared satellite data shows significant cooling of the cloud tops surrounding a ragged eye feature. As a result, satellite intensity estimates have increased, thus Teddy's intensity has been increased to 90 kt based on a Dvorak classification of T5.0/90 kt from SAB and a recent UW-CIMSS adjusted-ADT value of T5.7/105 kt.

The initial motion estimate based on the microwave satellite fixes is 305/10 kt. As described in previous discussions, the track forecast and reasoning both remain straightforward and unchanged for the next 72 h. The latest NHC model guidance is in excellent agreement that a deep-layer ridge situated over the central Atlantic will force Teddy on a northwestward track toward the western Atlantic. There is a little less divergence among the models on days 4 and 5 then on previous runs, and this difference remains related timing differences on where and how fast the hurricane begins to recurve ahead of an approaching mid-latitude trough and frontal system moving off the coast of the eastern United States in about 3 days. The new NHC track forecast is close to the previous advisory track now that it appears that the models have settled down, and lies close to the consensus models TVCA, HCCA, and FSSE.

The overall environmental conditions appear to be conducive for Teddy to continue to at least gradually strengthen for the next 36-48 hours. However, with sea-surface temperatures expected to be near 30 deg C in 48-72 hours when the vertical shear is going to be near zero, the intensity forecast at that time could be too low. For now, the official intensity forecast lies near the upper end of the guidance envelope, and shows Teddy's intensity leveling off after 36 hours due to the very dry environment that the hurricane will be moving through, which could disrupt the inner-core convective pattern and eye feature.

Several passive microwave overpasses have revealed that Teddy has developed a 25-nmi-wide closed eye, while GOES-16 infrared satellite data shows significant cooling of the cloud tops surrounding a ragged eye feature. As a result, satellite intensity estimates have increased, thus Teddy's intensity has been increased to 90 kt based on a Dvorak classification of T5.0/90 kt from SAB and a recent UW-CIMSS adjusted-ADT value of T5.7/105 kt.

The initial motion estimate based on the microwave satellite fixes is 305/10 kt. As described in previous discussions, the track forecast and reasoning both remain straightforward and unchanged for the next 72 h. The latest NHC model guidance is in excellent agreement that a deep-layer ridge situated over the central Atlantic will force Teddy on a northwestward track toward the western Atlantic. There is a little less divergence among the models on days 4 and 5 then on previous runs, and this difference remains related timing differences on where and how fast the hurricane begins to recurve ahead of an approaching mid-latitude trough and frontal system moving off the coast of the eastern United States in about 3 days. The new NHC track forecast is close to the previous advisory track now that it appears that the models have settled down, and lies close to the consensus models TVCA, HCCA, and FSSE.

The overall environmental conditions appear to be conducive for Teddy to continue to at least gradually strengthen for the next 36-48 hours. However, with sea-surface temperatures expected to be near 30 deg C in 48-72 hours when the vertical shear is going to be near zero, the intensity forecast at that time could be too low. For now, the official intensity forecast lies near the upper end of the guidance envelope, and shows Teddy's intensity leveling off after 36 hours due to the very dry environment that the hurricane will be moving through, which could disrupt the inner-core convective pattern and eye feature.

Partners of the Florida Public Radio Emergency Network include:  WDNA (Miami), WFIT (Melbourne), WMFE (Orlando), WFSU (Tallahassee), WGCU (Fort Myers), WJCT (Jacksonville), WKGC (Panama City), WLRN (Miami), WMNF (Tampa-Sarasota), WQCS (Fort Pierce), WUFT (Gainesville-Ocala), WUSF (Tampa), WUWF (Pensacola) and Florida Public Media.

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