Rain, clouds and the Heat Index defined
This morning it is overcast with rain showers, then a chance of a thunderstorm and rain showers in the afternoon. High of 64F. Winds from the SE at 5 to 15 mph. Chance of rain 90% with rainfall amounts near 0.4 in. possible.
Tonight it will be overcast with a chance of a thunderstorm and rain showers. Fog overnight. Low of 54F. Winds from the East at 5 to 15 mph. Chance of rain 90% with rainfall amounts near 0.8 in. possible.
The readings from my own instruments are:
The humidity is 86% with a Dew Point of 53ºF and temp is 57.4ºF.
Our Wind direction is North Northeast between 1.5 MPH and 3.0 MPH.
Our Barometric pressure is 30.43 HPA 1028 and falling with a weather graphic indicating rain.
The UV rating is 1 out of 16, Sunrise will be 4:54 a.m. sunset will be 8:24 PM and Moon Rise is at 8:48 p.m. EDT with the moon phase a full moon.
For the pilots out there, Raw Metar readings are:
METAR KAUG 131053Z AUTO 13006KT 10SM BKN028 BKN036 13/11 A3011 RMK AO2 SLP195 T01330111
Visibility is 10.0 miles/16.1 kilometers with Mostly cloudy conditions to 2,800 ft / 853 m.
WE received rain of just over .08 inches here in the past 24 hours.
What is the heat index anyway?
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.
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This morning it is overcast with rain showers, then a chance of a thunderstorm and rain showers in the afternoon. High of 64F. Winds from the SE at 5 to 15 mph. Chance of rain 90% with rainfall amounts near 0.4 in. possible.
Tonight it will be overcast with a chance of a thunderstorm and rain showers. Fog overnight. Low of 54F. Winds from the East at 5 to 15 mph. Chance of rain 90% with rainfall amounts near 0.8 in. possible.
The readings from my own instruments are:
The humidity is 86% with a Dew Point of 53ºF and temp is 57.4ºF.
Our Wind direction is North Northeast between 1.5 MPH and 3.0 MPH.
Our Barometric pressure is 30.43 HPA 1028 and falling with a weather graphic indicating rain.
The UV rating is 1 out of 16, Sunrise will be 4:54 a.m. sunset will be 8:24 PM and Moon Rise is at 8:48 p.m. EDT with the moon phase a full moon.
For the pilots out there, Raw Metar readings are:
METAR KAUG 131053Z AUTO 13006KT 10SM BKN028 BKN036 13/11 A3011 RMK AO2 SLP195 T01330111
Visibility is 10.0 miles/16.1 kilometers with Mostly cloudy conditions to 2,800 ft / 853 m.
WE received rain of just over .08 inches here in the past 24 hours.
What is the heat index anyway?
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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