"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."
"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."
"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
Are you a forecaster who wants to know everything about upper-air observations, radiosondes, skew-T's, hodographs, and severe weather indices? Your holy grail is finally here! It's the skew-T and hodograph book that has been in the works since 2009, and announced 11/24/17.
Released in 2017 Instability, Skew-T, and Hodograph Handbook provides a full background on working with skew-T diagrams and hodographs. Math is kept to an absolute minimum, the text has a friendly tone, and the information starts out simple and then builds on the existing text. Learn how these diagrams work, what all the lines mean and how to use the charts. Nearly every known severe weather index is covered, including newer parameters like Significant Tornado Parameter and Critical Angle. Informative notes in the margin help clarify the material and provide related historical and technical background. Each chapter has a summary section and and 20 questions.
Chapters on skew-T diagrams and hodographs
The book starts out with a chapter on thermodynamics, followed by a grounding in observing systems, then proceeds to working with skew-T's and hodographs. The charts are explained in detail, with numerous case studies and forecaster notes.
Severe weather index spreads
For 23 of the most heavily used severe weather indexes, there is a two-page spread. This provides a definition of the index, how it was developed, the range of units that are typical for severe weather situations, and samples for about 15 recent tornado outbreaks, This makes an excellent go-to desk reference for anyone working up a severe weather prediction or a chase forecast.
Instability, Skew-T, and Shear Handbook is designed for forecasters, hobbyists, undergraduate college students, and anyone who wants to learn more.
Forecasters Reference Workbook is the companion to this title, and will help you work through its material or apply what you've learned to your forecasts.
Additionally, our laminated skew-T log-p diagram, with reference info authored by Tim Vasquez on the back, is a useful tool to accompany this book.
About the author
Tim Vasquez began a meteorology career in 1984 writing the weather page for a Dallas newspaper. From 1989 to 1998 he was an Air Force meteorologist and worked at two television stations. He developed the Digital Atmosphere weather analysis software system in use worldwide. Residing in Austin, Texas, he is a software programmer, a consulting meteorologist, and a columnist for Weatherwise magazine.