目前墨西哥湾出现的一个热带低气压预计将发展成为大西洋飓风季的首个飓风。
A tropical depression in the Gulf is expected to become the first hurricane of the Atlantic season.
这一天气系统预计将于周三早些时候升级为热带风暴“伊萨亚斯”，随后在周四演变为飓风。
Why it matters: It could bring heavy rain, gusty winds and coastal flooding to the Gulf Coast, but it's too early to tell how much New Orleans could see.
美国国家飓风中心提醒从路易斯安那州到佛罗里达狭长地带的居民密切留意风暴动态。
The system is expected to become Tropical Storm Isaias early Wednesday and then a hurricane on Thursday. The NHC advised residents from Louisiana to the Florida Panhandle to monitor the storm closely.
该中心高级专家约翰·坎贾洛西指出，目前尚无法确定该系统何时转向东北方向以及向海岸移动的速度。
There is "significant uncertainty in where the system makes the northeast turn and how fast it moves toward the coast," NHC senior hurricane specialist John Cangialosi said Tuesday.
根据现有预报，伊萨亚斯将于周五以时速100英里、二级飓风的强度在新奥尔良以东登陆，不过这一预测仍有可能发生变化。
In the current forecast, Isaias makes landfall as a Category 2 hurricane with 100 mph winds just east of New Orleans on Friday, but that could change.