Yes, That Was A Momentary Rain Shower Featured

Mostly warm this week.

Big Idea

  • Monday has a partly cloudy forecast, with the chance of showers. 
  • Chances of thunderstorms diminish on Tuesday.
  • By Thursday, the temperatures could be near 90
  • Friday will be breezy and it will cool down slightly for the weekend
  • Driest monsoon on record for Prescott
  •

The Prescott area is experiencing the worst drought on record.

Forecast Summary:

Partly cloudy today, with a chance of late morning to evening showers or thunderstorms. Chance of thunderstorms diminishing on Tuesday. High  temperatures rising from the mid 80s Monday to near 90 by Thursday, then breezy Friday and slightly cooler for the weekend. Morning lows in the mid to upper 50s. 

Forecast Table:


Navigate on the map to your location and click for a detailed local forecast.


High pressure near the Four Corners region has ushered a more humid airmass into Arizona today, as evidenced by the cloud buildups and isolated showers this morning. Expect a chance of high-based showers and thunderstorms through this evening. Some cloud buildups are possible again tomorrow, but the chance of thunderstorms will diminish as high pressure builds again to our west and north winds dry us out again. The thunderstorms today will be capable of gusty winds, locally heavy rain, and small hail. Storm motion will be generally towards the north at about 10 mph.

High pressure will build back over Arizona through Thursday for near record warmth once again, until another trough moves through the Great Basin and brings some breezes on Friday and slightly cooler temperatures for the weekend.

So far, this is the driest monsoon on record for Prescott according to the NWS (see attached weather image). We have two weeks to go until the official end of the monsoon season on Sept. 30.

Meanwhile, this is also turning out to be a record hurricane season (https://www.theverge.com/2020/9/18/21444296/tropical-storm-wilfred-2020-hurricane-season-greek-names).

Curtis James 


Curtis N. James, Ph.D.                                                                       
Professor of Meteorology                                                                                   
Department of Applied Aviation Sciences                                   

Met Mail is an unofficial weather discussion and forecast transmitted once or twice a week via e-mail by the Embry-Riddle Department of Meteorology (http://meteo.pr.erau.edu/). Embry-Riddle offers an undergraduate bachelor-of-science degree program in Applied Meteorology. Please spread the word to all potential qualified candidates!

Further Information:

ERAU Applied Meteorology degree program

Official National Weather Service forecast

Embry-Riddle Aeronautical University: Website | Facebook | Twitter | YouTube

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Last modified on Monday, 21 September 2020 14:05
Dr. Curtis N. James, Ph.D.

Curtis N. James, Ph. D. Is a Professor of Meteorology at Embry-Riddle Aeronautical University in the Department of Applied Aviation Sciences.

He has taught courses in beginning meteorology, aviation weather, thunderstorms, satellite and radar imagery interpretation, atmospheric physics, mountain meteorology, tropical meteorology and weather forecasting techniques for over 16 years. He participates in ERAU’s Study Abroad program, offering alternating summer programs each year in Switzerland and Brazil.

He earned a Ph.D. in Atmospheric Sciences from the University of Washington (2004) and participated in the Mesoscale Alpine Programme (MAP; 1999), an international field research project in the European Alps. His research specialties include radar, mesoscale, and mountain meteorology. He earned his B.S. in Atmospheric Science from the University of Arizona (1995), during which time he gained two years of operational experience as a student intern with the National Weather Service Forecast Office in Tucson, Arizona (1993-1995).

Dr. James is a native of Arizona where he currently resides with his wife and five children. He is active in his community, having served on the Prescott SciTechFest Advisory Committee and as a Board Member for the Children's Museum Alliance, Inc. On his spare time, he enjoys weather watching, backpacking, camping, fishing, caving, mountain biking, acting, and music. He is an Eagle Scout and serves as the scoutmaster for a local scout troop.


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