A narrow patch of dry air will move across the Virgin Islands this morning but is forecast to be short-lived as a tropical wave reach the local area later today. The wave and its associated moisture, coupled with the effects of daytime heating, could lead to the development of shower activity. Today’s high temperatures will reach the middle 80s to low 90s. Expect a prevailing wind from the east to southeast at 10-20 miles per hour.
On Tuesday, lingering moisture from the tropical wave may lead to the development of showers during the afternoon. On Wednesday, a drier air mass will enter the area and limit the development of showers. The drier air will influence weather conditions until Friday, then another patch of moisture should filter into the area from the east.
There is a moderate risk of rip currents for most beaches on St. Croix, and along the coastlines of St. Thomas.
IN THE TROPICS
Showers and thundershowers associated with an area of low pressure over the central tropical Atlantic have increased overnight. Environmental conditions are forecast to be conducive for gradual development, and a tropical depression is likely to form within the next two to three days while the system moves slowly
west-northwestward to northwestward. The system is currently forecast to pass to the east-northeast of the northeast of the Virgin Islands as a tropical storm during the upcoming weekend. There is a 50% chance of continued development over the next two days, and an 80% chance of development through five days.
Sunrise: 6:08 a.m.
Sunset: 6:21 p.m.
FROM THE 3D MANDAHL WEATHER STATION
Sunday’s high temperature: 91 degrees at 12:03 p.m.
Sunday’s low temperature: 80 degrees at 11:15 p.m.
Peak wind gust: 16 miles per hour at 7:41 p.m.
24-hour rainfall: 0.18 inches
Monthly rainfall: 1.10 inches
Original Source: https://stjohnsource.com/2019/09/16/showers-late-monday-into-tuesday/