MSGID: 1:317/3 63d9574c   
   PID: hpt/lnx 1.9.0-cur 2019-01-08   
   TID: hpt/lnx 1.9.0-cur 2019-01-08   
   January 31, 2023 - Flooding in Madagascar   
      
      Madagascar   
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      On January 19, 2023, Tropical Cyclone Cheneso struck northwestern   
      Madagascar, bringing torrential rainfall across the region.   
      
      Maximum sustained winds at landfall were 66 miles per hour (106 km/h),   
      which is below hurricane strength. While Madagascar’s National Office   
      for Risk and Disaster Management reported wind gusts as high as 105.6   
      miles per hour (170 km/h), it was water, not wind, that caused most of   
      the damage.   
      
      According to a story published on Floodlist, several cities saw very   
      heavy rainfall, especially in the north. Between January 19 -20, the   
      city of Sambava recorded 100 mm (3.94 inches) and 104 mm (4.1 inches)   
      fell in Antsohihy. Unfortunately, the 24-hour total was only part of   
      the inundation. Cheneso was a large, water-logged system with a slow   
      approach to landfall, and an even slower crawl across the country. When   
      the remnants of the storm moved off land and over the Mozambique   
      Channel on January 23, Cheneso quickly roared back to life, becoming   
      the equivalent of a major hurricane with a large span. As late as   
      January 25, outer convective bands were still bringing rain to northern   
      Madagascar.   
      
      Extensive flooding and landslides are blamed for at least 30 deaths in   
      the country, with 20 people missing. More than 80,000 people have been   
      adversely affected by the aftermath of Cheneso, with many still   
      residing in shelters, almost two weeks after landfall. In addition,   
      significant damage to infrastructure, including bridges and roads, and   
      to crops have been reported.   
      
      On January 30, 2023, the Moderate Resolution Imaging Spectroradiometer   
      (MODIS) on board NASA’s Aqua satellite acquired a false-color image   
      showing widespread flooding in northwestern Madagascar. The town of   
      Antsohihy is located just northeast of center.   
      
      This type of false-color image uses infrared and visible light (bands   
      7,2,1) to help separate water from land. Vegetation appears bright   
      green, open land is tan, and cloud may look either white or tinted with   
      bright electric blue. Deep water, such as the Indian Ocean, takes on a   
      deep inky blue hue while shallower water takes on lighter tones of   
      blue.   
      
      While extensive flooding is easily visible in this image, the extent is   
      better appreciated by viewing the same region prior to the passage of   
      Tropical Cyclone Cheneso. Thanks to the NASA Worldview App, a rollover   
      comparison of Aqua MODIS imagery of the same region on January 30 and   
      January 2 can be viewed simply by clicking  here.   
      
      The NASA Worldview app provides a satellite's perspective of the planet   
      as it looks today and as it has in the past through daily satellite   
      images. Worldview is part of NASA’s Earth Observing System Data and   
      Information System. EOSDIS makes the agency's large repository of data   
      accessible and freely available to the public.   
      
      Image Facts   
      Satellite:  Aqua   
      Date Acquired: 1/30/2023   
      Resolutions:  1km (281.5 KB),  500m (782.1 KB),  250m (508.8   
      KB)   
      Bands Used: 7,2,1   
      Image Credit: MODIS Land Rapid Response Team, NASA GSFC   
      
      
      
   https://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2023-01-31   
       
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