This past June is the fifth hottest in the history of San Juan in Puerto Rico after averaging a maximum temperature of 84.6 degrees Fahrenheit (ºF) in its 30 days, which implies that it was 1.2 ºF above normal , according to Servicio Nacional de Meteorología (SNM).
The statistics validate, once again, the hot pattern that dominates 2020, classified by the National Oceanic and Atmospheric Administration (NOAA) as the second hottest year in Earth's history, the hottest ever recorded in Europe and Asia, and the sixth hottest year since records have been recorded in Puerto Rico.
Data are confirmed the SNM meteorologist and person in charge of the climatological analysis, José Álamo, who added that last month he also had below normal rains and warmer temperatures at night.
“In terms of temperatures, this June did not broke nin some record of maximum temperature in San Juan, but there were higher minimum temperatures than normal and this is validated by the data, "said the expert, in an interview with El Nuevo Día .
" Minimum temperatures The warmer ones were not necessarily the product of the daytime heat, but could have been because it did not cool at night, perhaps due to the contribution of dust from the Sahara or because there was a lot of cloudiness. The most significant increase was in the minimum temperatures, "he said.
For the most part, during the 30 days of June Puerto Rico had relatively variable weather conditions (pattern of rain and snowfall); dry; episodes of Sahara dust and cloudiness in some nights that could be the product of a trough in high levels of the atmosphere or tropical wave.
Each one of these conditions, according to Álamo, could have caused that in the June nights will average a minimum temperature of 78.6ºF when normal is an average of 77.7ºF.
The lowest minimum temperature was 75ºF and was recorded on the night of June 6 and 8, respectively. Meanwhile, the highest maximum temperature was 93ºF and was registered on June 19 and 21.
The statistics offered by the SNM are based on the records of the San Juan meteorological station located at Luis Muñoz Marín International Airport . Each of the data is contrasted with the rest of the agency's climatological records that span from November 1898 to today.
The data also establishes the need for a significant rain event in order to eradicate the drought that currently affects Puerto Rico. Last month ended with a 3.90-inch accumulation of rain in San Juan, which means it was .51 inches below normal.
The relationship between lack of rain or drought and heat is symbiotic since as measure In that there is no cloud cover in the local area during the day, the sun's rays penetrate the ground longer and thus increase the maximum temperatures.
In the case of minimum temperatures, the increase in the records is due to the fact that for hours At night, there is cloudiness in the local area that prevents the heat that accumulated during the day from dispersing and cooling the environment.
Attentive to the hurricane season
The SNM urged citizens to develop climatological awareness since the hot pattern in Puerto Rico may be similar to the rest of the tropics and, therefore, also be reflected in the waters surrounding the island.  For this reason, the constant penetration of the sun's rays over the oceans could give way to hotter surfaces that favor the development or strengthening of atmospheric phenomena.
In fact, the information has already been confirmed by the meteorological scientist and professor at the University of Colorado, Philip Klotzbach, who specializes in developing hurricane season forecasts.
Klotzbach posted on his Twitter account by comparing this year's Atlantic Ocean temperature with records from the past 30 years that it is concluded that in effect, it is accumulating between 0.6 to 1.4 ºF above normal in surface waters and this may lead to a more active than normal hurricane season.
The Center for Climate Prediction of NOAA forecast a probable range of 13 to 19 named storms (winds of 39 mph or more) for this hurricane season.
Of that total, six to 10 could become hurricanes (winds of 74 mph or more), including three to six major hurricanes (category 3, 4 or 5; with winds of 111 mph or more). NOAA provided 70% confidence in these forecasts.