Pagasa reiterates importance of color-coded rainfall advisoriesThursday, September 20, 2012 06:24 AM Views : 296Alice V. Sicat
Philippine Atmospheric, Geophysical and Astronomical Services Administration (Pagasa) yesterday once again gave emphasis on the importance of understanding the color-coded rainfall advisories they have been issuing since June of this year.
Pagasa Weather Specialist Raymond Ordinario, who was a guest speaker in the National Disaster Risk Reduction and Management Council's (NDRRMC) "Resilience Project" workshop in Tagaytay, explained that these rainfall advisories are important in monitoring the situation in a certain area where a heavy downpour is occurring and what to expect in the next three hours.
A yellow rainfall advisory is raised when 7.5 mm to 15 mm rainfall lasts for one hour and is likely to continue. The communities in the area are advised to be aware of the weather condition and are warned that flooding is possible to happen, especially if the place is a low-lying or near river channels.
The orange rainfall advisory is raised when the rainfall is between 15 mm to 30 mm within one hour and is expected to continue in the next two hours. Flooding is a definite threat in the communities and they are expected to prepare for evacuation.
On the other hand, a red rainfall advisory is issued when rainfall is more than 30 mm within an hour or if rainfall has continued for the past three hours and is more than 65 mm. Communities experiencing this weather condition must evacuate as serious flooding is expected.
Local government units (LGU) and media practitioners were asked by Pagasa to further familiarize themselves with these color-coding advisories for them to be able to easily inform the people, since they are the ones who have the fastest means to disseminate information.
Meanwhile, Ordinario revealed that by next month, Pagasa is hoping to launch a new rainfall warning website, which contains better graphical representations or rainfall maps, which are easier to interpret.
Over 30 media practitioners and LGU representatives from Pasig, Marikina and Cainta are taking part in the four-day NDDRMC Resilience Project workshop in Taal Vista Hotel in Tagaytay from September 18 to 21.