Wide World of SPoRT
Correct Color Curve Makes all the Difference
Thu, 19 Nov 2009 20:42:00
When one first displays an ADAS product in AWIPS (at least at our office it works this way!), this is the default color curve that is applied to the image. In this case, ADAS temperatures are displayed for 20Z 17 NOV2009 along with METAR observations. Notice that the colors in this default curve only change gradually over the range of temperatures. As a [...]
Featured Article
NWS Albuquerque Fog Product Evaluation
The Albuquerque National Weather Service Forecast Office recently evaluated the SPoRT MODIS fog product, also known as the spectral difference, as well as the GOES low cloud base and fog depth products. The Aviation forecaster on the morning of 7 January 2009 used these products to assist in producing and modifying the terminal aerodrome forecast (TAF) for two regional airports: Farmington and Gallup. The main issue was a concern about the validity of the timing of fog at each TAF site in the model guidance for these observation sparse locations. The SPoRT products were valuable, and the Aviation forecaster said, "Seeing where the lower clouds and fog were developing through the evening in the imagery made me much more confident if lower clouds and / or fog did occur, it woud not be until 10Z or after, as remained forecasted in the 06Z TAF."
Image of the Day
(click to enlarge)
This MODIS false color composite is used to distinguish between cloud cover (white), clear ground (green), and snow cover (red). This image from 8 March 2008 shows the extent of snow cover from Arkansas, most of Tennessee, and into Kentucky and shows that northern Alabama did not accumulate any snowfall.
NSSTC Collaborative Weather Blog
Epic Tennessee Valley "Ida" Rainfall Totals List
Thu, 12 Nov 2009 18:16:48
Tropical Storm Ida brought rain to the Tennessee Valley area Monday night through Tuesday. Though the rain was steady and caused considerable ponding of water on roads, no significant problems were reported in our area. There was a fairly significant gradient between the 2-3" amounts over the southeastern portion of our area to virtually no [...]
