Heat advisory expanded to include Twin Ports
The National Weather Service has expanded a heat advisory to include Duluth and Superior today, where temperatures had already reached as high as 91 degrees as of 3 p.m.
It was 87 degrees at Duluth International Airport at 3 p.m., 91 at Sky Harbor Airport and 90 in Superior, Aitkin and Minnepolis.
The heat advisory in in effect until 8 p.m. tonight, and was issued because temperatures will reach the upper 80s and low 90s while the heat index – the feels-like temperature spurred by high humidity – already has climbed past 100 in some areas near Duluth.
The heat advisory now covers the southern two-thirds of Minnesota, with an excessive heat warning in effect for the core Twin Cities.
The Weather Service says these conditions may lead to a heightened risk of heat stroke and other illness, especially for young and old people and those without air conditioning. Experts note that extreme heat is responsible for more deaths on average than all other severe weather combined. The actual temperatures are given in shaded areas and can be much higher for people exposed to direct sunlight.
Today’s temperature is the warmest of 2014 so far in Duluth, and the warmest day since Sept. 6.
The heat won’t last, however, with a cold-front passing through the region this evening, triggering thunderstorms along the way and lowering high temperatures for the rest of the week into the 70s.