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In the know: Storm warnings

01:30 AM October 20, 2016

Storm warning

Signal No. 1 (Lead time 36 hours)—30-60 kph maximum sustained winds; expected impact of the wind: no damage to very light damage

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Signal No. 2 (Lead time 24 hours)—61-120 kph maximum sustained winds; light to moderate damage expected

Signal No. 3 (Lead time 18 hours)—121-170 kph maximum sustained winds; moderate to heavy damage expected

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Signal No. 4 (Lead time 12 hours)—171-220 kph maximum sustained winds; heavy to very heavy damage expected

Signal No. 5 (Lead time 12 hours)—more than 220 kph maximum sustained winds; very heavy to widespread damage expected

Storm surge warning

Green – no threat of storm surge

Yellow alert – possible storm surge of of 0.5 to one meter; stay away from the coast or beach

Orange alarm – storm surge of one to three meters is expected;  all marine activities must be cancelled and evacuation must be carried out

Red – coming storm surge greater than three meters that can cause severe damage to coastal and marine infrastructure;  communities need to be evacuated

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Rainfall warning

Yellow advisory – 7.5 to 15 mm rain within one hour; flooding is possible in low-lying areas and near river channels

Orange alert – between 15 and 30 mm rain within one hour; flooding is threatening in low-lying areas and near river channels

Red – more than 30 mm rain within one hour or if rainfall has continued for the past three hours and is more than 65 mm; severe flooding is expected; take necessary precautionary measures

Source: http://www.dost.gov.ph/

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TAGS: green, Orange Alarm, Red Alarm, Storm Warnings, Weather, yellow alert
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