The Felt Temperature is an apparent temperature, that combines the effects of the wind speed and relative humidity.showers and thunderstorms), one must be aware that precipitation may occur regardless of the value of probability shown. This value is useful to assess the time of the day when precipitation is more likely to occur. This value is useful to check how likely it is to rain/snow during that day ī) in the hourly/3h forecasts, the probability shown is for precipitation equal or above 0.3 mm in the last 3h. To asses the forecast uncertainty for precipitation, two values of probability are shown:Ī) in the daily overview, the probability shown is for precipitation equal or above 1 mm in 24 h.Therefore, these forecasts may be different from the ones issued by forecasters because they have additional and updated information, so the the user is advised to check these forecasts and any warnings. Due to the intrinsic nature of the atmosphere, in some events, the weather may not be accurately forecasted by the numerical models.The forecasts available in this page are obtained automatically using statistical post-processing methods on dynamical forecasts (from ECMWF and AROME) and are updated twice a day.Please review our full terms contained on our Terms of Service page. 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. Land Use data comes from the Global Land Cover SHARE database, published by the Food and Agriculture Organization of the United Nations.Įlevation data comes from the Shuttle Radar Topography Mission (SRTM), published by NASA's Jet Propulsion Laboratory. This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.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.Īll other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis. To get a sense of how much these sources agree with each other, you can view a comparison of Santa Cruz and the stations that contribute to our estimates of its temperature history and climate. KWVI, 58% 14 mi, 125 ft KSJC, 21% 27 mi, 16 ft KRHV, 21% 27 mi, 98 ft © OpenStreetMap contributors Reid-Hillview of Santa Clara County Airport (KRHV, 21%, 27 mi, northeast, 98 ft elevation change).Mineta San José International Airport (KSJC, 21%, 27 mi, north, 16 ft elevation change) Watsonville Municipal Airport (KWVI, 58%, 14 mi, east, 125 ft elevation change).The stations contributing to this reconstruction are: The estimated value at Santa Cruz is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Santa Cruz and a given station. There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Santa Cruz.įor each station, the records are corrected for the elevation difference between that station and Santa Cruz according to the International Standard Atmosphere, and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations. This report illustrates the typical weather in Santa Cruz, based on a statistical analysis of historical hourly weather reports and model reconstructions from Januto December 31, 2016.
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