![]() ![]() Tucson ended up being one of the wettest spots across the entire state during the 2021 monsoon with over a foot of rain!Ĭompare that to 2020 when most of the state saw less than 2 inches of monsoon rain. That came immediately after the hottest June ever recorded in Tucson with an average temperature of 89.8 degrees. That ramped-up intensity led to the wettest month ever recorded in Tucson in July 2021 with over 8 inches of rain. So, when it rains, it's tending to be more intense than it otherwise would be," says Castro. "A warmer atmosphere can potentially hold more water vapor. The science behind extreme rainfall, like we've seen during the 2021 monsoon, is simple. (That year we had several decaying Tropical Storms come through which really impacted our rainfall totals.) Phoenix Sky Harbor International Airport picked up more than 4 inches of rain. That caused great big heat waves in the Pacific Northwest and record high temperatures in Canada, but it also caused our monsoon to come in early and strong.”įor Phoenix, and much of the state, 2021's monsoon setup meant more moisture to work with and more stormy days. That's the second-most ever recorded.Ĭastro says, "This year, that monsoon ridge just moved a little bit north and west of where it climatologically sits. Then, we went to the opposite end of the spectrum in 2021 with 23 days of measurable monsoon rainfall. We only had two days with measurable rainfall in Phoenix during Monsoon 2020. Christopher Castro with the Hydrology and Atmospheric Science Department at the University of Arizona.Ī year earlier, that meant more drought and extreme heat in Phoenix with an unprecedented 53 days at 110 degrees or more. You get more of whatever you're going to get," says Dr. "The paradigm of the monsoon and the changing climate is just everything is getting more extreme. It was a complete turn-around from the previous year's so-called "non-soon," but scientists say extremes like these are expected as our climate changes. Please review our full terms contained on our Terms of Service page.From damaging downburst winds to heavy rain and devastating flash flooding, we saw it all across Arizona during the 2021 season. ![]() We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. ![]() We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. We assume no responsibility for any decisions made on the basis of the content presented on this site. Weather data is prone to errors, outages, and other defects. The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Time zones for airports and weather stations are provided by. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database. The sources for the averages shown in the daily temperature chart are discussed in greater detail on this station's Averages Report.Īll data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition, by Jean Meeus. We use ISD data to complement and backfill for our METAR archive. The Integrated Surface Database (ISD), maintained and published by NOAA's National Center for Environmental Information, consists of hourly and synoptic weather reports from a variety of sources. ![]() We have been collecting and archiving published METAR reports since 2011, and have found third-party sources for archived reports from years prior to that. They are published via radio transmission and on the internet. Such reports are used by pilots, air traffic controllers, meteorologists, climatologists, and other researchers. This report graphically illustrates the historical weather reports recorded by the weather station at Phoenix Sky Harbor International Airport in 2022.Īirport weather stations throughout the world routinely issue METAR weather reports. ![]()
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