Global & Disaster Medicine

Archive for the ‘Tropical cyclones’ Category


National Weather Outlook

Southern Mississippi Valley sector loop

Laura Makes Landfall

Laura Makes Landfall

After making landfall near Cameron, Louisiana, as a category 4 storm, Hurricane Laura continued to move northward over western Louisiana. The Visible Infrared Imaging Radiometer Suite (VIIRS) on NOAA-20 acquired this image of Hurricane Laura at 2:50 a.m. Central Daylight Time on August 27, 2020, about two hours after the storm made landfall. Clouds are shown in infrared using brightness temperature data, which is useful for distinguishing cooler cloud structures from the warmer surface below. That data is overlaid on composite imagery of city lights from NASA’s Black Marble dataset.

NASA Earth Observatory image by Joshua Stevens, using VIIRS data from NASA EOSDIS/LANCE and GIBS/Worldview and the Suomi National Polar-orbiting Partnership, and Black Marble data from NASA/GSFC. Caption by Adam Voiland.

NASA: After Hurricane Laura made landfall

Flooding in the Wake of Laura

August 13, 2020



Flooding in the Wake of Laura

August 29, 2020

Hurricane Laura made landfall along the Louisiana and Texas coasts on August 26, 2020. In the wake of the category 4 storm, the Operational Land Imager (OLI) on Landsat 8 acquired images showing flooded coastal lands around the towns of Cameron and Creole, Louisiana, south of the city of Lake Charles. The false-color images were acquired on August 13 and 29, 2020. They were composed from a combination of shortwave infrared, near infrared, and natural color (bands 6-5-4) to make it easier to distinguish flooded areas (navy blue and black) from drier ground. Vegetation is bright green and clouds are cyan.

NASA Earth Observatory images by Joshua Stevens, using Landsat data from the U.S. Geological Survey and road data from OpenStreetMap. Caption by Michael Carlowicz.

Keeping track of Laura and Marco

The approaching storms…..Marco and Laura

Southern Mississippi Valley sector loop

Southeast sector loop

JTWC Tropical Warnings


CDC: Hurricane education

Typhoon Kammuri swept through the Philippines on Tuesday, ripping rooftops from houses, knocking down power lines and leaving a half-million people huddled in evacuation centers


NASA: Tropical Cyclone Maha

Spate of Cyclones in the North Indian Ocean

Tropical Cyclone Maha has taken a sharp turn over the Arabian Sea and is now poised to brush India’s west coast on November 7, 2019. By landfall, forecasters expect the storm to have weakened from its extremely severe peak on November 4, which was when the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite acquired this natural-color image. At the time, sustained winds measured 185 kilometers (115 miles) per hour—the equivalent of a category 3 storm on the Saffir-Simpson wind scale.

Considered in isolation, there’s nothing particularly unusual about Maha. However, in the context of the season and the basin, it is the latest in a series of strong tropical cyclones in an area that typically doesn’t see many. In fact, the North Indian basin is usually the least active in the Northern Hemisphere.


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