Ask Jack
Answers: Arizona tornadoes
Q: Do tornadoes occur in south-west Arizona, including in the Yuma area? Chris, Yuma, Ariz. A: A few tornadoes have occurred in Yuma County in the past, which means that they can occur in the future. Nevertheless, the record shows they are rare and usually weak. If you go to the National Climatic Data Center's (NCDC) Storm Events Web page, select "Arizona"... »
Answers: AMS Weather Book Supplementary Texts
Q: Are The AMS Weather Book Supplementary Texts available as a whole, in one digital file, such as a PDF file (or perhaps even in hard copy)? I would like to print and to keep those supplementary texts with my copy of The AMS Weather Book. If so, please provide the 'Net location from which I may download. Thank you. Dan,... »
Pilot answers: Upper air data and forecasts
Q: I use RUC soundings for flight planning, but I am befuddled by the following: When I enter a station, load the Op40 soundings, and hover with my mouse over the loaded graph I see bold numbers on the far-left near the Pressure (mb) line, and light numbers appear directly underneath my cursor with a dynamic pink line drawn from... »
When seasons begin — revistited
Q: Hello Jack. I was wondering if anyone ever turned in an answer on your "official seasons" proposal from last summer. I am doing my senior research project on the seasons, and would like to know what you found out. Thank you for your time. Justin, Redwood Falls, MN [caption id="attachment_1938" align="alignleft" width="300" caption="Where it's light and dark on earth at 11:30... »
