Cyclone off the southeast coast

September 25th, 2008 |
GOES-12 sounder and GOES-12 imager water vapor channels

GOES-12 sounder and GOES-12 imager water vapor channels

A fairly large cyclone developed and intensified off the southeast coast of the US on 2425 September 2008. An animation of GOES-12 sounder and GOES-12 imager water vapor channel data (above) displayed an impressive structure associated with the system, with a well-defined dry slot wrapping around the southern and eastern quadrants of the storm. While not officially acquiring tropical (warm core) characteristics, the storm produced winds gusting as high as 55 mph and waves as high as 19 feet along parts of the Virginia and North Carolina coasts.

A sequence of AWIPS images of the 1-km resolution MODIS water vapor channel (below) showed better details of the storm structure during the period of intensification.

MODIS water vapor imagery

AWIPS images of the MODIS water vapor channel

GOES-12 visible images from 24 September and 25 September (below) revealed some impressive convection forming around the core of the storm.

GOES-12 visible images (24 September)

GOES-12 visible images (24 September)

GOES_12 visible images (25 September)

GOES-12 visible images (25 September)