New hurricane advisories will give deadlines for storm prep

Some coastal residents always put off emergency preparations until storm clouds loom on the horizon. The National Hurricane Center is going to try giving those people a deadline this year, issuing experimental advisories showing when tropical-storm force winds may hit particular communities to help them understand when it’s too late to put up storm shutters or evacuate. The forecasters’ advisories will be fueled by more data than ever, thanks to new weather satellites and an expanded network of underwater gliders.…