Warm, muggy, overcast and the Heat index
This morning it is overcast with a chance of a thunderstorm and a chance of rain, then thunderstorms and rain showers in the afternoon. High of 84F. Winds from the SSW at
5 to 10 mph. Chance of rain 80% with rainfall amounts near 0.3 in. possible.
Tonight it will be overcast with a chance of rain in the evening, then partly cloudy. Low of 59F. Winds less than 5 mph. Chance of rain 40% with rainfall amounts near 0.3
in. possible.
The readings from my own weather instruments are:
The humidity is 86% with a Dew Point of 69ºF and a temp of 74ºF.
Our wind direction is South Southeast between 0.6 MPH and 1.2 MPH.
Our Barometric pressure is 29.91 HPA 1011 and falling with a weather graphic indicating rain.
The UV rating is 0 out of 16, Sunrise is at 6:07 a.m. sunset is 7:06 PM and Moon Rise is at 5:23 p.m. EDT and the moon phase is waxing gibbous.
For the pilots out there raw metar is:
SPECI KAUG 061116Z AUTO 19005KT 6SM BR SCT007 BKN110 22/21 A2985 RMK AO2 T02170206
Visibility is 6.0 miles/9.7 Kilometers with Scattered clouds down to 700 ft / 213 m and Mostly Cloudy down to 11000 ft / 3352m.
We received no rain here over the past 24 hours.
Since things are getting hot again, I thought another post about the Heat Index is in order.
Heat indexFrom Wikipedia, the free encyclopedia
The heat index (HI) is an index that combines air temperature and relative humidity in an attempt to determine the human-perceived equivalent temperature — how hot it feels, termed the felt air temperature. The human body normally cools itself by perspiration, or sweating, which evaporates and carries heat away from the body. However, when the relative humidity is high, the evaporation rate is reduced, so heat is removed from the body at a lower rate causing it to retain more heat than it would in dry air. Measurements have been taken based on subjective descriptions of how hot subjects feel for a given temperature and humidity, allowing an index to be made which relates one temperature and humidity combination to another at a higher temperature in drier air.
The heat index was developed in 1978 by George Winterling as the "humiture," and was adopted by the National Weather Service a year later. It is derived from work carried out by Robert G. Steadman. Like the wind chill index, the heat index contains assumptions about the human body mass and height, clothing, amount of physical activity, thickness of blood, sunlight and ultraviolet radiation exposure, and the wind speed. Significant deviations from these will result in heat index values which do not accurately reflect the perceived temperature.
In
This morning it is overcast with a chance of a thunderstorm and a chance of rain, then thunderstorms and rain showers in the afternoon. High of 84F. Winds from the SSW at
5 to 10 mph. Chance of rain 80% with rainfall amounts near 0.3 in. possible.
Tonight it will be overcast with a chance of rain in the evening, then partly cloudy. Low of 59F. Winds less than 5 mph. Chance of rain 40% with rainfall amounts near 0.3
in. possible.
The readings from my own weather instruments are:
The humidity is 86% with a Dew Point of 69ºF and a temp of 74ºF.
Our wind direction is South Southeast between 0.6 MPH and 1.2 MPH.
Our Barometric pressure is 29.91 HPA 1011 and falling with a weather graphic indicating rain.
The UV rating is 0 out of 16, Sunrise is at 6:07 a.m. sunset is 7:06 PM and Moon Rise is at 5:23 p.m. EDT and the moon phase is waxing gibbous.
For the pilots out there raw metar is:
SPECI KAUG 061116Z AUTO 19005KT 6SM BR SCT007 BKN110 22/21 A2985 RMK AO2 T02170206
Visibility is 6.0 miles/9.7 Kilometers with Scattered clouds down to 700 ft / 213 m and Mostly Cloudy down to 11000 ft / 3352m.
We received no rain here over the past 24 hours.
Since things are getting hot again, I thought another post about the Heat Index is in order.
Heat indexFrom Wikipedia, the free encyclopedia
The heat index (HI) is an index that combines air temperature and relative humidity in an attempt to determine the human-perceived equivalent temperature — how hot it feels, termed the felt air temperature. The human body normally cools itself by perspiration, or sweating, which evaporates and carries heat away from the body. However, when the relative humidity is high, the evaporation rate is reduced, so heat is removed from the body at a lower rate causing it to retain more heat than it would in dry air. Measurements have been taken based on subjective descriptions of how hot subjects feel for a given temperature and humidity, allowing an index to be made which relates one temperature and humidity combination to another at a higher temperature in drier air.
The heat index was developed in 1978 by George Winterling as the "humiture," and was adopted by the National Weather Service a year later. It is derived from work carried out by Robert G. Steadman. Like the wind chill index, the heat index contains assumptions about the human body mass and height, clothing, amount of physical activity, thickness of blood, sunlight and ultraviolet radiation exposure, and the wind speed. Significant deviations from these will result in heat index values which do not accurately reflect the perceived temperature.
In
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