(PM)- A dangerous heatwave is set to sweep across the eastern USA starting on Friday. Temperatures of well over 100 degrees Fahrenheit are expected to impact major metro areas. These temperatures can break records and cause dangerous and deadly conditions for those who spend too much time outside.
Starting on Friday, a 4-day long heatwave is expected to sweep across the nation and shatter records. The northeast got a taste of this weather on Wednesday as heat advisories were posted throughout the region, with real-feel temperatures soaring past 100 degrees Fahrenheit.
On Friday temperatures are expected to be in the mid to upper 90’s with some spots approaching 100 degrees.
The United States-based GFS model is showing Philadelphia touching 100 while Boston and NYC stay around 94. This is only the start of a record-breaking stretch of heat for this portion of the country.
Saturday
Saturday will likely be the worst of the hot temperatures. Temperatures are expected to touch or surpass 100 degrees in areas from Virginia to Maine.
However, the humidity will make real-feel temperature significantly higher. The ECMWF shows temperature will feel like, with predictions reaching up to 111 degrees near the NYC area.
All across the northeastern region, the real feel temperature will be just within a few degrees of 100. Dewpoints will likely be in the upper 70’s to low 80’s, making the air feel heavy and dense. Any outdoor activity could be very dangerous without proper preparation to stay hydrated.
During these periods of extreme heat, the National Weather Service is urging people to reschedule strenuous activities to early morning or evening, wear lightweight and loose-fitting clothing, and drink plenty of water.
Sunday
On Sunday, temperatures will likely stay the same or only get hotter. The good news is dewpoints will likely subside making it feel slightly cooler. Even with lower dewpoints, the actual temperature will be right around that 100-degree mark from Philadelphia to Boston with the major cities feeling the worst of the heat.
Monday
Monday will offer a bit of relief as rain begins to move into the area. The quicker the better. The GFS model is showing in areas that experience rain, temperatures will likely only make it into the mid 60’s. Areas that see no rain will once again be in the 90’s as the heatwave loosens its grip on the nation.
The earlier and heavier the rain falls the lower temperatures will dive. I suspect areas just Northwest of major cities will experience some relief, where the rain is forecasted to be heaviest.
Overall a dangerous heatwave is set to impact the eastern USA. Rarely do we ever see and forecast temperatures this high. It normally takes decades in between these types of forecasts.
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