MODIS Color Composite & Cold and Dry Airmass over Florida

A recent record cold event was felt December 14th and 15th with low temperatures dropping into the 20s for consecutive nights across portions of East Central Florida.  This event also was noted for the dryness of the low level airmass with 850mb dewpoints to below -40 c and surface dewpoints that fell into the single digits and a few spots below zero (Fahrenheit!) which is a extemely rare event  for East Central Florida.

We were lucky enough to get a 1km MODIS Color Composite image at 1846 UTC on the Dec 14th near the time when the Melbourne Internation Airport (KMLB) recorded their lowest dewpoint for the event at 1853 UTC which was 0 F.  Winter Haven (KGIF) actually recorded a dewpoint below zero that hour which is again an extremely rare event for so early in the season. The high resolution Color Composite really captured the extent of the cold airmass across the state, especially when examining the extent of the marine statocumulus field offshore.

The MODIS imagery displayed high resolution detail of the turbidity in the near shore Atlantic waters and also along the West Florida shelf.  The imagery also showed a hint of the west wall of the gulf stream across our southern Atlantic waters. The open and closed cell marine stratocumulus were also well depicted over the warmer waters of the Atlantic and Gulf.  The plume of drying reached the north coast of Cuba which can be seen in the MODIS image.

MODIS 1km Color Composite Dec 14 2010, 1846 UTC

MODIS 1km Color Composite Dec 14 2010, 1846 UTC

Cape Canaveral (XMR) Sounding Dec 14 2010, 1200 UTC

Cape Canaveral (XMR) Sounding Dec 14 2010, 1200 UTC

Leave a Reply

Please log in using one of these methods to post your comment:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s