NWS: Today’s heat ‘most life threatening’


Another day of oppressive summer weather with dangerous temperatures well into the 90s and very high humidity levels.

Today’s weather is worse than Thursday’s with heat indexes approaching 110 degrees.

On Thursday, New Haven hit a heat index of 104 degrees; Bridgeport and Hartford reached 103 degrees; and Danbury came in with 99.

An Excessive Heat Warning has been issued until 8 p.m.

That warning is issued when the combination of heat and humidity is expected to make it feel like it’s 105 degrees or greater.

By 2 p.m.today, Bridgeport and New Haven had already reached a heat index of 104; Danbury was at 100.

Today’s heat and humidity will be the hottest of the heat wave and the most life threatening,” the National Weather Service said on its Facebook page. “Heat and humidity continue for the sixth straight day across Southern New England, with the likelihood that today will be the warmest day of all with this heat wave as temperatures rise into the upper 90s with a few locales breaking the century mark. Such temperatures combined with the humidity, and it is entirely plausible for locations within the Excessive Heat Warning to reach heat index values up to 110 degrees.

This is a very dangerous situation, and can be life threatening for children and the elderly. Be sure to check up on your friends and family today, ensuring they are getting plenty of water, rest, and seeking shelter in air-conditioned facilities.”

Heat kills by pushing the human body beyond its limits. In extreme heat and high humidity, evaporation is slowed and the body must work extra hard to maintain a normal temperature, according to FEMA.  Most heat disorders occur because the victim has been overexposed to heat or has over-exercised for his or her age and physical condition. Older adults, young children and those who are sick or overweight are more likely to succumb to extreme heat.

To make things worse today, there is also an air quality alert with expected high levels of ozone.

Any good news? A cold front is expected to pass through  Saturday night and break the back of the heat wave. There is a chance the front could trigger some strong thunderstorms.

Friday got off to a warm start. At 6 a.m., the temperature was already 81 degrees in Bridgeport and 74 and 75 in Danbury and Oxford. By 10:30 a.m., it was 87 degrees in most cities across the state.

Here is the steamy forecast:

Today: Sunny and hot, hot, hot with a high near 100. Heat index values as high as 110. Light southwest wind increasing to 6 to 11 mph.

Tonight: Partly cloudy, with a low around 77. South wind 6 to 11 mph becoming light southwest after midnight.

Saturday: It will not be as hot, but still hot and humid in the upper 80s to lower 90s. An approaching cold front from the Great Lakes will bring a greater threat for thunderstorms Saturday night. Some of the storms could produce gusty winds, heavy rain, and frequent lightning.

Sunday: With the passage of the cold front Saturday night, relief from the heat and humidity will arrive on Sunday and last through early next week. High temperatures on Sunday and into next week will be seasonable in the upper 70s to mid-80s. Lows at night will be in the mid-50s to mid-60s.

On Long Island Sound

A sea breeze today Southwest winds will be blowing between 5 and 10 knots with 20 knots in the afternoon. Seas 1 foot or less.

High tide: Around 8:30 a.m. and around 9 p.m.

Low tide: Around 2:45 p.m.

Water temperature: 75. 9 degrees.

UV Index: A 10 (extreme; haven’t seen that often).


Jim Shay