Published On: Tue, Aug 25th, 2015

Tropical storm Erika over Central Tropical Atlantic, approaching the Eastern Caribbean

Tropical Cyclone Bulletin No.1 -Watch Message No. 1: Tropical Storm WATCH In Effect

2015-0825-csn-bq-eux-sab-mdc-tropical-storm-erika-forms-5amWILLEMSTAD - (MDC | 05:00AM) -- A Tropical Storm WATCH is now in effect for St. Eustatius and Saba.

Effect On Local Conditions

  • Winds: On Wednesday, local winds will shift gradually to the Northeast and the wind speed will increase with time as the system approaches. The wind direction will shift gradually to the East during the late afternoon and then to the Southeast and South during the evening, and overnight of Thursday, gusting during this phase to tropical storm force (40 to 60 miles per hour). Winds will gradually subsiding during late Thursday and early Friday while shifting to a Southeast direction.
  • Seas: On Wednesday, waves will build gradually in Easterly swells along mainly the East facing coastal areas. On early Thursday morning, local seas will deteriorate a little more, becoming fairly rough (8 to 12 feet). A Small Craft Advisory will go into effect at 6 P.M. on Wednesday.
  • Rainfall: Associated rain showers are foreseen to start on late Wednesday into early Thursday and should continue from time to time during the day with occasional thundershowers. Expect rainfall amounts between 1 to 3 inches.

Local authorities and residents of the St. Eustatius and Saba are advised to continue monitoring the further progress of this weather system and to take all necessary measures to safeguard life and property.

Center's Latest And Forecast Positions

Date/Time Position Intensity Location
Tuesday, August 25, 5:00 AM 14.6N 49.4W Minor tropical storm 925 miles southeast of St. Eustatius
Tuesday, August 25, 8:00 PM 15.8N 53.3W Moderate tropical storm 650 miles east- southeast of St. Eustatius
Wednesday, August 26, 8:00 PM 17.1N 59.6W Severe tropical storm 225 miles east of St. Eustatius


  • Tropical Storm WATCH: An announcement that sustained winds of 34 to 63 knots (39 to 73 mph, 63 to 118 km/h) are possible within the specified area within 48 hours in association with a tropical, sub-tropical or post-tropical cyclone.
  • Tropical Storm WARNING: A warning for tropical storm conditions, including possible sustained winds within the range 63-117 km/h (39-73 mph) (34-63 knots) are expected in specified areas in 36 hours or less.

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