Your source for forecasting tools, software, and books since 1993

"Thank you for actually penning these books. They are a wonderful review of the concepts without the excessive (but necessary) amount of math behind them. I wish they had been recommended as supplements in both my undergrad and graduate years."

— Josh Tobias, 2017

"I have used Digital Atmosphere for quite sometime and consider it to be one of the most straightforward, comprehensive, and operationally useful programs on my server. I have found it to be invaluable for my day-to-day analyses and forecasting as well as my ongoing research. Tim is also extremely helpful and absolutely indispensable when it comes to locating scripts, the best datasets, and even professional contacts to help make any organization as productive as possible."

Chris Robbins, iWeatherNet

"The quality of your products is second to none."

— C. Brian Batey

"Thanks Tim for your quick response (we like that at FedEx) about our Professional Versions! As we're a 24/7 operation, we're look forward to augmenting our present weather system with Digital Atmosphere."

— Mel Bradley, FedEx Operations

"Wow. Your books are incredibly technical and useful. I consider myself a very amateur weather watcher and feel that I am already ahead of the curve. Thank you."

— Terry W. Taylor

"The NEXRAD support is truly awesome and easy to use - and the other feature just really tops it off. This is about my sixth email tonight - the other five being to other spotters in the area telling them they just have to download Digital Atmosphere and give it a serious going over."

— David Cashion

"I'm really looking forward to the next phase of Digital Atmosphere Workstation. I'm sure it will be as excellent as all your other products."

— Simon Keeling
Weather Consultancy Services, UK

"I run and manage a number of festival type events and Digital Atmosphere is able to produce charts that I can use for normal weather forecasting with a fair degree of accuracy and in particular wind speed and direction that is crucial to many of events."

— Robert Connolly, GI7IVX

"The archive data arrived today. WOW! What an amazing set of data! Thanks again for all the extras that you included as well!"

— Bryan Bollman, IA

"We do run GEMPAK and all the Unidata software also, but your package has numerous advantages, the biggest being Windows."

— Anonymous

"I am very impressed with what you have done. I have already shown several people at work your site. I plan on talking to our MIC [Meteorologist In Charge] soon to see if we can get Digital Atmosphere in the office to complement/supplement AWIPS."

— Ken Simosko, NWS, Pocatello

"This new version is even better than the older version which was awesome! Your programming skills and met knowledge amaze me!"

— Chris Kincaid

Dec 2023 NEWS

Orders & e-mail delayed this week (Sep 2023)

Due to the passing of a family member today, orders and e-mail may be delayed for up to a few days September 11-14th (Mon-Thu 2023). Some items may still ship during this time. We will make every effort to get caught up by the end of the week. Thanks for your patience. (Posted 2023-09-10)

Weather Analysis & Forecasting Handbook, 2nd Ed. released

This 2021 revision contains an extensive update of numerical modeling, bringing readers the latest on models like the GFS, ECMWF, and HRRR models. Covers the same concepts and techniques that National Weather Service forecasters practice on a daily basis. Among those who will enjoy the title are meteorology professionals, students, pilots, flight dispatchers, amateurs, storm chasers, and spotters. Numerous sections throughout the book have been updated, and it is 80 pages longer than the 2011 edition. The most extensive revisions are found in the modeling, radar, and satellite chapters.


Bonus data for Forecast Laboratory
All users of Forecast Laboratory 2015 are entitled to receive free of charge the bonus satellite pack, which fills in hourly satellite data for almost all the case dates. This is available only via an 800 MB download from our website. To get this download, contact us.

Running apps on the Mac OS
We have received several questions about running our applications under the Mac OS. All of our programs are reported to work perfectly on Mac OS X using the WinOnX emulator. User Filippos Tymvios from Cyprus reports, "The installation is very easy: you start the emulator and double click on the Digital Atmosphere .exe. The only problem was noticed when working and switching from more than 3 osx applications to DA. The emulator freezes and you have to restart it - and that's all." The WinOnX website is located at

Free weather charts
As a service to all forecasters, we offer a large collection of reference charts for download, including Skew-Ts, tephigrams, weather plotting charts, station locator charts, and other graphics. There are several varieties of skew-T log P diagrams and also some obscure ones, like pastagrams and arowagrams. These are all scans of actual vellum diagrams I have in my collection. Though we're now in the Internet age and paper is largely obsolete, there is still nothing like having the original diagrams in order to work out special problems. Enjoy!   - Tim Vasquez