After an intense heatwave this past week left many places in northern Argentina and Uruguay topping out near or just above the century mark (approximately 38°C) for the first time this summer, another blast of heat and high humidity will build this weekend and into early next week.
Downtown Buenos Aires reached 100°F degrees (approximately 38°C) on Thursday which is about 15 degrees (9°C) above average for late December. Add to that an unseasonably humid air mass and AccuWeather Real Feel values peaked at around 115°F (46.1°C).
On Christmas Day, the heat sent tens of thousands of people to area rivers and lakes to try and beat the heat. Unfortunately for one community along the Parana River in Argentina, the high number of swimmers due to the searing heat were met by a school of piranhas which ended up injuring around 70 people.
A boy runs through a water fountain in Buenos Aires, Argentina, Thursday, Dec. 26, 2013. (AP Photo/Victor R. Caivano)
After a brief respite from the scorching heat on Friday in Buenos Aires thanks to isolated showers and thunderstorms, temperatures in the upper 90s to near 100 (mid 30s to near 40 C) along with high humidity will once again be in the forecast this weekend into Monday and perhaps Tuesday.
Isolated to scattered thunderstorms will fire in the late afternoon and evenings hours on Saturday and especially Sunday, providing some natural relief to the heat. Given the hot and unstable air mass, any storms that fire this weekend can briefly turn severe and contain damaging winds and heavy downpours.
There is some long term relief from the heat in sight for Buenos Aires and northern Argentina beginning as early as Wednesday and continuing through the end of next week as a cold front pushes up from the south.
High temperatures Wednesday will struggle to hit 90 as the cold front crosses, and highs in the lower 80s are expected for next Thursday and Friday.
In the western Pacific, Tropical Storm Rammasun is on track to threaten the Philippines at midweek.
Another visit from the Polar Vortex will deliver unseasonably cool air to the Midwest, preceded by rounds of thunderstorms, including severe weather.
The hot weather seen across the Northwest over the weekend will carry over into the new week, continuing the risk of heat-related illness.
Starting on Sunday, the Northeast and mid-Atlantic will be faced with severe thunderstorms and flooding downpours on multiple days before the new week ends on a more refreshing note.
Parts of the South will get major relief from heat, humidity and storms next week while other locations will be at greater risk for flash flooding.
Memphis, TN (1980)
108 degrees -- all-time record high.
Walker, IA (1992)
3.5 inches of rain in just one hour caused stream and river flooding.
New Jersey, NY (1895)
Cherry Hill Tornado in North Jersey caused $50,000 damage; funnel then descended at New York City in Harlem and Woodhaven, where one was killed; ended as a waterspout in Jamaica Bay; New York City damage totalled $43,000. Note: This is not the Cherry Hill in South Jersey.