RAP BLIPMAP California-Nevada Viewer
For experienced BLIPMAP users - requires javascript  
Registration is required for this viewer to work.  You can register at the Register Page; further information is available at the Registration Information webpage.
Created by Dr. John W. (Jack) Glendening,  Meteorologist  

BLIPMAPs predict thermal soaring conditions resulting from surface heating of the Boundary Layer, by post-processing numerical weather model predictions to provide parameters suited to the needs of soaring pilots.  Users of this viewer are assumed to be familiar with BLIPMAP and its parameters, as described on the CA-NV 21Z BLIPMAP webpage and on the parameter information webpage. 

TO CREATE A BLIPMAP IMAGE SEQUENCE:
(1) Select a day, a time, and a parameter
(2) Single click the "INSERT MAP" button
(3) Repeat for additional day/time/parameter(s)
(4) Single click "FRAME" buttons to move through images
Buttons:
"INSERT MAP" inserts selected map following the current image
"List LOAD" loads lastest maps in SAVE image list of favorite maps
"List SAVE" sets SAVE image list to current image list  (uses cookie)
"New Cache" enables replacement of browser-cached images with latest images
      (use if viewer displays old images, so "Insert Map" will get latest website image not cached image)
"DELETE Bkd" deletes the current image and displays the preceeding image
"DELETE Fwd" deletes the current image and displays the following image
BLIPMAP NEWS (Latest: Apr 20, 2026)

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Current Day:

The "current day" changes at 0Z

Current Times:

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   Server Fund: February 24, 2026:  $1624 Blipmap Forum:
 Latest: Tue Feb 24 15:17 "Browser problems" [Jack Glendening]

DrJack sez:
Dec 29:  Dallas Gliding Association  has just become an "Angel" and DrJack thanks them for their support.
Dec 22:  Do hawks use BLIPMAPs?  Apparently so, or at least that is one possible interpretation of the findings of Canadian naturalist Paul Summerskill who studied migration routes within the eastern and central continental flyways of North America for the 2003 spring and fall migrations and wrote in his report: "The relationship of [BLIPMAP] Thermal Updraft Velocity to the preferred direction of flight over and adjacent to hawk-watch sites proved to be valuable in locating flights and in predictiong large or small counts."
Dec 3:  Updated the monthly BLIPMAP usage statistics.
Dec 1:  I was away from home for 6 days and the website unexpectedly hit a quota limit.  I'm not sure whether that caused any problems for website users, but it has been fixed now.
Nov 22:  AOL and aggressive anti-spam users:  For those who have forgotten their registration password and asked that it be sent to them via the "User Info Recovery" webpage, I have found that the email sent is being intercepted by some overly agressive anti-spam filters, so you never get it!
Oct 30: Website Operational Again:  Yesterday's problems due to my website provider "upgrading" the website have been fixed and the website is working again.

I only look at the webpages and maps that I use personally or that I suspect might contain an error.  If you notice a consistent problem with either, please let me know.

For a summary of available on-line information:  BLIPMAP HELP webpage


Heros: Thanks to Vit Hradecky of the Greater Boston Soaring Council for hosting the processing and to John Whitney (F9) for slaying the file-eating dragon inhabiting the original viewer and adding the "ListSAVE/LOAD" feature.  I also want to personally thank those whose support is listed on the Contributors webpage.

Link to the CA-NV 21Z RAP BLIPMAP webpage
Link to the latest BLIPSPOT forecasts for individual locations
BLIPMAP HELP webpage - for additional on-line information.