It's a good idea to visit the National Hurricane Center and keep an eye on such storms - you might get the NHC early "estimates" of storm activity:
SPECIAL TROPICAL WEATHER OUTLOOK
NWS NATIONAL HURRICANE CENTER MIAMI FL
200 PM EDT WED MAY 6 2015
For the North Atlantic...Caribbean Sea and the Gulf of Mexico:
Disorganized showers and thunderstorms extending from the east coast
of Florida across the Bahamas and the adjacent Atlantic waters are
associated with an upper-level trough and a weak surface low located
north of the northwestern Bahamas. Conditions are expected to
become gradually more favorable for development over the next day or
so while this system moves slowly northward and then northwestward.
A subtropical or tropical cyclone could form by tomorrow or Friday,
and interests along the southeast coast of the United States should
monitor the progress of this system through the weekend. Regardless
of development, heavy rain is possible over portions of the coastal
southeastern United States beginning tomorrow. The next Special
Tropical Weather Outlook will be issued on this system by 8 PM EDT
* Formation chance through 48 hours...medium...60 percent
* Formation chance through 5 days...medium...60 percent
Based on the nearby graphic, if you were planning a beach outing in South Carolina or on the Outer Banks for the weekend, you might want to pay close attention.
More to purpose of this series, the National Hurricane Center is a valuable resource with which you ought to become familiar if you live in a potentially affected area.
Some new things for 2015 from the NHC: