The official Jaltemba Bay Weather page was just updated to include all weather data collected through the month of May, and as you can see, summer temperatures are already upon us.
I am amazed at the detailed information our weather instrument records for all of us to ponder. Here are a few observations that I hope you will find interesting, too.
Rainfall – During the month of May, we had a total of 5 days with measurable amounts of rain, totaling 31.2 mm or about 1¼-inches. This can probably be attributed to the first hurricane of the season, Amanda, which was short lived and drifted westward out to sea without causing any damage.
Rain Measurements – Rainfall is measured five ways: rate, day, storm, month and year. The daily rainfall is measured from midnight to midnight each day. The storm amount is calculated from the time it begins to rain until 24-hours after the last drop has fallen. The rate, month and year amounts need no explanation. You can compare rainfall amounts on the Official Jaltemba Bay Weather page.
El Niño – We are currently experiencing an El Niño climate change, which is a general warming trend caused by warmer-than-normal sea-surface temperatures, changes in the surface pressures and a weakening of the trade winds. This usually causes drier weather in the Western Pacific and Indian Ocean and wetter-than-normal weather in the Eastern Pacific. El Niños occur every 2-7 years and can last from 9 months to 2 years. For all you fishermen out there, warmer ocean temps caused by some El Niños may reduce the upwelling of the cold nutrient-rich waters, consequently negatively affecting local fishing.
An El Nino is the opposite of a La Niña, which produces slightly cooler water temperatures. La Niña conditions recur every few years and can persist for as long as two years. Both of these phenomena have huge effects on global weather. According to meteorologists, the southern US should get above average rainfall and fewer tornadoes as a result of this El Nino.
Santa Ana Winds – So far this year, we have experienced one Santa Ana wind. This occurred on January 15th. According to our weather station, we endured 37 km/23.5 mile per hour winds coming from the Sierra Madre mountains, which pushed our temps up just over 92 F (33.1 C) for a few hours. By definition, Santa Ana winds are strong, usually hot and extremely dry, down-slope winds that originate inland. Santa Ana winds blow mostly in the autumn and winter, but can occur at other times of the year also.
NEW Mean Temperature – We just added an indicator for monthly mean temperatures on the 2014 weather chart. This is shown as a light orange bar next to the dark orange high temperature bar. The mean temperature is the average of all lows and highs for that month.
Where Does this Data Come From – The Jaltemba Bay Weather station is located approximately 50 feet (15 meters) above street level next to the beach in Rincón de Guayabitos. The weather instrument, a Davis Vantage Pro2, is funded and maintained by the Jaltemba Bay Life team. Live data is automatically uploaded every 10 minutes from the device directly to the Official Jaltemba Bay Weather page on JaltembaBayLife.com.
It may also be of interest to note that the device is directly exposed to both the ocean and mountain breezes. Because of this all-around exposure, temperatures recorded are generally a few degrees cooler than those you experience on the streets and in town (3-5 degrees and sometimes more). Rainfall amounts and wind velocity can also vary considerably throughout the bay.
View the Official Jaltemba Bay Weather page for up-to-the-minute weather information… 24/7
by David Thompson