As of October 7, the National Hurricane Center lists 1 active Atlantic system; the nearest is undefined Isaias, 1,828 miles from San Juan. 1 of 1 is in Puerto Rico’s corridor or too close to dismiss; 0 are moving away.
The Atlantic is quiet this week. The only active system is Tropical Storm Isaias, with 40 mph winds, moving east at 8 mph. It sits 1,828 miles from San Juan, a long way off. The feed technically counts it as being in Puerto Rico’s corridor, but at that distance and with that heading it is not something to plan around. It is also a modest storm, with a pressure of 1,004 mb.
The 7-day outlook from the NHC shows no areas with a chance of development, so nothing else is expected to form in the coming week. The climatological peak of the season, September 10, is now several weeks behind us, which fits the calmer picture, though the season officially runs well beyond this date and late-season storms do occasionally appear. For now, there is no need to change plans. Official guidance comes from the NHC and NWS San Juan, and it is worth checking their updates if the outlook changes.
Active systems
| System | Winds (Maximum sustained winds in the latest advisory) | From San Juan (Great-circle distance from San Juan) | Movement | Toward or away (Whether the system's position and heading could bring it toward Puerto Rico) |
|---|---|---|---|---|
| Tropical Storm Isaias | 40 mph | 1,828 mi | E at 8 mph | in the corridor |
Live tracks, cones and the Puerto Rico prep checklist are on the hurricane hub; the weather page carries the daily tropics line. Official watches and warnings: the National Hurricane Center and NWS San Juan.
This is the 5th Tropics Watch of the season (last week’s is here). Source: the National Hurricane Center’s advisories and its Tropical Weather Outlook of Oct 7 at 1:14 AM.