The US National Oceanic and Atmospheric Administration (NOAA) defines a "super typhoon" as having maximum sustained winds of 234 kph or more.
GMA News' resident meteorologist Nathaniel Cruz shared with GMA News Online on Tuesday that as early as now, disaster preparedness officials must advise residents of Bicol and Eastern Visayas that Haiyan could hit their areas at typhoon strength at the very least.
PAGASA defines a super typhoon as one having maximum winds greater than 200 kph.
Cruz said the coming cyclone is expected to be a typhoon by the time it enters the Philippine Area of Responsibility.
He added that "the crucial period to monitor is that time frame before the typhoon makes landfall."
Cruz explained that in coming forecasts, weather conditions could change "that could either make the cyclone stronger or weaker." He noted though that current forecasts show the cyclone gaining strength and may become a super typhoon.
GMA News' resident meteorologist said the cyclone could weaken "if the cold and dry winds of the northeast monsoon interact with the typhoon." Cruz said the amihan winds will have the effect of cooling down the typhoon, which draws its strength from warm water and winds.
US Navy forecast as of Tuesday morning
The JTWC forecast said their forecast "wind radii (is) valid over open water only."