by Noraliza Bt Maat As part of the northeast monsoon, heavy rains since 17 December forced 3,390 people in Kelantan and 4,209 people in Terengganu to flee their homes. Several Keretapi Tanah Melayu (KTM) intercity train services along the East Coast route were disrupted on 18 December following the floods. On 20 December, the area of Kajang, Selangor, was also hit by serious floods. By 23 December, most rivers in Kelantan, Pahang, Perak and Terengganu had reached dangerous levels. Due to rising water levels, most businesses were affected about 60,000 people were displaced in the next day. The state of Kelantan had the most evacuees (20,468 to 24,765), followed by Terengganu (21,606), Pahang (10,825), Perak (1,030), Sabah (336) and Perlis (143). (Source: Wikipedia
Distribution Rainfall Forecast in Malaysia
The visualization below shows a map of Distribution Rainfall Forecast in Malaysia. Each circle represents a city. The color indicates the amount of rainfall for that particular city. The amounts of rainfall are increasing start from darkest red to bright red and then bright blue to blue. The user can choose the year to see the distribution of rainfall in that year for particular timeline by selecting from the menu on the upper side of the graph.
Top 10 Cities with Highest Rainfall
Highest Rainfall Forecast in Malaysia Tableau-viz
One of the most powerful parts of Tableau is the ability to combine single visualizations like the two I have shown above together on a dashboard and create interactivity between and among them. By so doing, user can know amount of rainfall by year and by month. This data visualization shows the 10 cities with highest rainfall forecast. Same as before, the user can choose the year for particular timeline by selecting from the menu on the upper side of the dashboard to see the cities with highest rainfall forecast in Malaysia with the amount of rainfall forecast by year also by month. If user only wants to know amount of rainfall forecast for a specific city, he or she can click at a specific circle that represent the city in the map or click specific city in the bar graph or heat maps.
Amount of Rainfall by Monsoon
Monsoon can affect the amount of rainfall forecast in Malaysia. The bar graph shows the sum of rainfall for 10 cities with highest rainfall by monsoon. User can click circle in the maps to see total rainfall by monsoon for a specific year for that city that have been selected.
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