Tropical Storm Wanda Advisory 28

There are no coastal watches or warnings in effect.

None.

At 900 PM GMT (2100 UTC), the center of Tropical Storm Wanda was located near latitude 37.0 North, longitude 37.8 West. Wanda is moving toward the east near 3 mph (6 km/h). Wanda is expected to turn northeastward at a faster forward speed tonight, and a fast motion toward the northeast is expected Sunday through Monday. Maximum sustained winds are near 45 mph (75 km/h) with higher gusts. Some strengthening is possible through Sunday. After that time, Wanda is expected to merge with a frontal system Sunday night and dissipate Monday or Monday night. Tropical storm force winds extend outward up to 70 miles (110 km) from the center. The estimated minimum central pressure is 999 mb (29.50 inches).

Convection associated with Wanda has decreased during the past several hours, with only a small convective cluster occurring just east of the center. In addition, scatterometer data received since the last advisory suggests that the maximum winds have decreased to near 40 kt. That will be the initial intensity for this advisory.

Wanda is starting its long-anticipated northeastward turn, with the initial motion now 090/3 kt. Developing deep-layer southwesterly flow on the southeast side of a large mid-latitude low pressure area should cause the cyclone to accelerate northeastward during the next 12 h, with a fast northeastward motion continuing until Wanda dissipates between 36-48 h. The track guidance is in good agreement, and the new track forecast lies near the various consensus models.

Despite the recent weakening, the intensity guidance still forecasts some intensification during the next 12-24 h, possibly due to increased upper-level divergence over the cyclone caused by the mid-latitude low or the upcoming significant increase in forward speed. The new intensity forecast will continue to call for Wanda to strengthen for 24 h, although given current trends it would not be surprising if it did not. The cyclone is expected to merge with a cold front between 24-36 h, and the forecast follows the the global model guidance in calling for the circulation to dissipate by 48 h.

Convection associated with Wanda has decreased during the past several hours, with only a small convective cluster occurring just east of the center. In addition, scatterometer data received since the last advisory suggests that the maximum winds have decreased to near 40 kt. That will be the initial intensity for this advisory.

Wanda is starting its long-anticipated northeastward turn, with the initial motion now 090/3 kt. Developing deep-layer southwesterly flow on the southeast side of a large mid-latitude low pressure area should cause the cyclone to accelerate northeastward during the next 12 h, with a fast northeastward motion continuing until Wanda dissipates between 36-48 h. The track guidance is in good agreement, and the new track forecast lies near the various consensus models.

Despite the recent weakening, the intensity guidance still forecasts some intensification during the next 12-24 h, possibly due to increased upper-level divergence over the cyclone caused by the mid-latitude low or the upcoming significant increase in forward speed. The new intensity forecast will continue to call for Wanda to strengthen for 24 h, although given current trends it would not be surprising if it did not. The cyclone is expected to merge with a cold front between 24-36 h, and the forecast follows the the global model guidance in calling for the circulation to dissipate by 48 h.