6/21/2012

菲律賓洪水災害預警地圖 / The Philippines Flood Hazard Map

Project Noah is a new Google Maps based flood hazard warning map from the Philippines' National Operational Assessment of Hazards and Risks (NOAH).

The map includes a number of weather layers. It is possible to view an animated radar layer from MTSAT. It is also possible to get the latest stream and rain gauge readings from across the country. If you want to know the current weather in the Philippines you can also select to view the Weather Outlook layer on the map.

Noah 計畫是一個建構在 Google Maps 的洪水災害預警地圖系統，包括很多圖層及目前天候。如下圖

Probability of Rain

Flood MAP

Pressure / Rainfall Contour

Source: The Philippines Flood Hazard Map by Keir Clarke, Noah

12/27/2011

菲律賓瓦西颱風災害地圖 / Google Crisis Map - Typhoon Washi (Sendong)

瓦西(Washi)颱風在當地時間16號星期五深夜，夾帶著強風豪雨，引發大量洪水和土石流，沖進菲律賓南部民答那峨島的河濱與沿岸村莊，重創該島「卡加揚德奧羅」（Cagayan de Oro）和「伊里甘」（Iligan）等地，造成嚴重傷亡，摧毀1萬多間房屋並造成30多萬人流離失所，這些民眾如今大多待在緊急避難所。
菲律賓國家減災風險管理委員會(National Disaster Risk Reduction and Management Council)負責人拉莫斯(Benito Ramos)說，遠至菲律賓中部莫好島(Bohol)的漁民，都在幫忙打撈被沖到好幾百英里外的遺體。
拉莫斯接受廣播電台訪問時說：「只要海中有遺體，搜尋與打撈作業就會持續進行，甚至新年以後也是如此。」當局已經把搜索區域擴大到半徑300公里範圍。

Washi, known locally in the Philippines as Sendong, began as a tropical depression on December 13, 2011 in the West Pacific Ocean about 2150 km (~1333 miles) due east of the southern Philippines. Washi only intensified slightly and never exceeded tropical storm intensity as it tracked due west towards the southern Philippines’ island of Mindanao.

Washi made landfall on the east coast of Mindanao on the afternoon of Dec. 16 as a moderate tropical storm with sustained winds reported at 55 knots (~63 mph). Despite its modest intensity, Washi had a huge impact on the island. As Washi made its way across Mindanao, it dumped heavy rains over parts of the island, which in turn triggered flash floods and mudslides.

Rainfall estimates from the TRMM data are shown here for the period Dec. 13 to 20, 2011 for the southern Philippines. Storm symbols mark Washi's track. Rainfall totals are on the order of 200 to over 250 mm (~8 to 10 inches, shown in green and yellow) along Mindanao's east coast where Washi made landfall, but the highest amounts are along the northwest coast, where totals are on the order of 300 to over 400 mm (~12 to over 16 inches, shown in orange and red). Credit: SSAI/NASA, Hal Pierce

Image Credit: NASA/SSAI, Hal Pierce

NASA’s Tropical Rainfall Measuring Mission (TRMM) satellite produced the image above late on December 15, 2011. In this image, it shows the tallest thunderstorms in the storm that reached around 15 kilometers or approximately 9.3 miles. The TRMM estimated only heavy rainfall located in the southwest quadrant of the storm early on December 15. By that evening, the storm had intensified and was showing rainfall estimates of at least two inches (50 mm) per hour in the east, north, and western quadrants. Some areas across the region, including Mindanao, saw rainfall totals you would typically see in a month in just one day. Everyone pays attention to the winds of a tropical system, but the biggest threat from any tropical cyclone is heavy rain, flooding, and storm surge.

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