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Post-Tropical Cyclone Ana

UPDATED
1100 PM AST Sun May 23 2021
LOCATION
680 MI NE OF BERMUDA
WINDS
40 MPH
PRESSURE
1007 MB
MOVING
NE AT 28 MPH

ANA BECOMES A POST-TROPICAL CYCLONE

ALERTS
HAZARDS
SUMMARY
DISCUSSION

There are no coastal watches or warnings in effect.


None.


At 1100 PM AST (0300 UTC), the center of PostTropical Cyclone Ana was located near latitude 38.3 North, longitude 55.2 West. The posttropical cyclone is moving toward the northeast near 28 mph (44 km/h), and a northeastward motion with an increase in forward speed is expected through Monday. Satellitederived wind data indicate that maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Little change in strength is forecast overnight, and Ana is expected to dissipate on Monday. Tropicalstormforce winds extend outward up to 35 miles (55 km) from the center. The estimated minimum central pressure is 1007 mb (29.74 inches).


Ana has mainly remained devoid of deep and organized convection today, with only a couple of short-lived bursts noted in satellite imagery earlier this morning. The cyclone has been an exposed cloud swirl through the afternoon and evening hours, and Ana continues moving into a hostile environment characterized by cool sea-surface temperatures, dry mid-level air, and increasing vertical wind shear. Thus, Ana has become a post-tropical cyclone, and this will be the final NHC advisory on the system.

Although a recent ASCAT-B pass missed the center of post-tropical Ana, it still shows an area of 30-35 kt winds in the southeast quadrant of the low near the edge of the swath. Therefore, the initial intensity is set at 35 kt, with the slightly stronger winds likely just a product of the accelerating forward speed of the system. The post-tropical cyclone is embedded in deep-layer southwesterly flow and will continue to accelerate northeastward until it opens up into a trough and becomes absorbed by a strong baroclinic zone approaching from the northwest on Monday.

Additional information on post-tropical Ana can be found in High Seas Forecasts issued by the National Weather Service, under AWIPS header NFDHSFAT1, WMO header FZNT01 KWBC, and online at ocean.weather.gov/shtml/NFDHSFAT1.php

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Sources include nearest National Weather Service office, National Hurricane Center, and the Florida Public Radio Emergency Network (@FloridaStorms).
Sources include nearby emergency management agencies, FEMA, and your local NPR affiliate. 
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