Images
September 27, 2010 - Post-Tropical/Extratropical Storm Igor (11L) over Davis Strait
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Once a powerful Category 4 Hurricane churning the tropical Atlantic Ocean, the storm known as Igor stretched weakened bands of wind and rain over the waters of the Davis Strait and Labrador Sea on September 22, 2010 when the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard the Terra satellite captured this natural-colored image.
In this image, the center of convection, once the eye of the hurricane, lies over the Labrador Sea between Greenland to the north and Canada’s coast of Labrador/Newfoundland on the west. The system has become so elongated that the clouds extend from the northern Atlantic Ocean on the southeast side of the storm to the Davis Strait to the west northwest. At the time of the final advisory on Igor issued by the Canadian Hurricane Center (CHC), only 6 hours before this image was captured, the storm still carried sustained winds of 120 km/hr (75 mph), which falls within the limits of Category 1 Hurricane status on the Saffir-Simpson Hurricane Wind Scale.
According the National Hurricane Center (NHC), the term “extratropical cyclone” is used to indicate that the storm has lost “tropical” characteristics such as poleward displacement of the cyclone as well as conversion of the cyclone’s primary energy source from the release of latent heat of condensation
(a tropical characteristic) to baroclinic (the temperature contrast between warm and cold air masses) processes. The term “post tropical cyclone” is used to indicate a former tropical cyclone; these may also be called an “extratropical cyclone” or a “remnant low”, depending on the characteristics of the storm. It is important to note that cyclones can become extra tropical and still retain heavy rains and hurricane force winds.
Image Facts
Satellite:
Terra
Date Acquired: 9/22/2010
Resolutions:
1km ( B), 500m ( B), 250m ( B)
Bands Used: 1,4,3
Image Credit:
Jeff Schmaltz, MODIS Land Rapid Response Team, NASA GSFC
Once a powerful Category 4 Hurricane churning the tropical Atlantic Ocean, the storm known as Igor stretched weakened bands of wind and rain over the waters of the Davis Strait and Labrador Sea on September 22, 2010 when the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard the Terra satellite captured this natural-colored image.
In this image, the center of convection, once the eye of the hurricane, lies over the Labrador Sea between Greenland to the north and Canada’s coast of Labrador/Newfoundland on the west. The system has become so elongated that the clouds extend from the northern Atlantic Ocean on the southeast side of the storm to the Davis Strait to the west northwest. At the time of the final advisory on Igor issued by the Canadian Hurricane Center (CHC), only 6 hours before this image was captured, the storm still carried sustained winds of 120 km/hr (75 mph), which falls within the limits of Category 1 Hurricane status on the Saffir-Simpson Hurricane Wind Scale.
According the National Hurricane Center (NHC), the term “extratropical cyclone” is used to indicate that the storm has lost “tropical” characteristics such as poleward displacement of the cyclone as well as conversion of the cyclone’s primary energy source from the release of latent heat of condensation (a tropical characteristic) to baroclinic (the temperature contrast between warm and cold air masses) processes. The term “post tropical cyclone” is used to indicate a former tropical cyclone; these may also be called an “extratropical cyclone” or a “remnant low”, depending on the characteristics of the storm. It is important to note that cyclones can become extra tropical and still retain heavy rains and hurricane force winds.
Image Facts
Satellite:
Terra
Date Acquired: 9/22/2010
Resolutions:
1km ( B), 500m ( B), 250m ( B)
Bands Used: 1,4,3
Image Credit:
Jeff Schmaltz, MODIS Land Rapid Response Team, NASA GSFC
