Yellow
Rainfall of 7.5 mm to 15 mm per hour (2 gallons per square meter/hour)
Expected to continue for the next two hours
Flooding possible in low-lying areas and areas near rivers
Those under yellow rainfall advisory are advised to monitor the weather condition
Orange
Rainfall of 15 mm to 30 mm in an hour (4 to 8 gallons per square meter/hour)
Expected to continue for next two hours
Indicates continuous rainfall in the past three hours exceeding 45 mm to 65 mm
Flooding a definite threat in communities under the orange alert.
Stay alert for possible evacuation
Red
Rainfall of more than 30 mm within an hour (8 gallons per square meter/hour)
Expected to continue in the next two hours
Indicates continuous rainfall in the past three hours of more than 65 mm
Serious flooding expected in low-lying areas. Public must take precautionary measures.
Issued when downpours constitute an emergency. When Pagasa raises a red warning, communities should be prepared to respond.
It means serious flooding is seen and that residents should be ready to evacuate to safety.
Source: gov.ph
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