Definition of dew point..... The dewpoint temperature is the temperature at which the air can no longer hold all of its water vapor, and some of the water vapor must condense into liquid water. At 100% relative humidity, the dewpoint temperature and real temperature are the same, and clouds or fog or dew can begin to form. While relative humidity is a relative measure of how humid it is, the dewpoint temperature is an absolute measure of how much water vapor is in the air.
For the summer months....
Dew point in the 50s: comfortable
Dew point in the lower 60s: starting to get humid
Dew point in the mid 60s: humid
Dew point in the upper 60s: very humid
Dew point in the 70s: oppressive
Current dew points in Kentucky are in the mid to upper 60s.
Current dew point in Indiana range from the upper 60s to near 70 in the south to mid 60s central to lower 40s in the north. There is a front just north of Indianapolis. After it moves through the dew points will drop and the weather will feel much more comfortable tomorrow.
Yesterday's severe weather outlook from the SPC was a major bust. They had a 30% wind damage outlook in Indiana and Ohio. There was a 5% tornado risk covering everywhere along and north of the Ohio River. The storms coming out of Missouri weakened and made the entire region more stable. All of the warnings were in Tennessee which wasn't even in a risk area.
Here is today's outlook for wind. The slight risk (15% or greater) goes from west Tennessee to Texas. We are in a 5% risk. Even though the wind fields are not impressive, there is a large temperature and moisture difference with the front and there will be some storms this afternoon. Will they be severe? It is possible but that would be isolated. Thunderstorms are just beginning to develop in the Indianapolis area.
.
It was a busy day yesterday for lifeguards on the Atlantic beaches in Florida. There were over 100 rescues in the Daytona Beach area and 200 rescues due to rip currents in the New Smyrna Beach area. Three teenagers from Sanford, FL were swimming about 100 yards from a lifeguard tower when they were caught up in the powerful rip current. Lifeguards responded and rescued two of the boys, who are both 17 years old. The third teenager, a 15-year-old, didn't make it and authorities said he was swept under by the rip current. For the complete story....click here
The photos from the Mars spacecraft, Phoenix, are really something. This shot shows a polygon pattern in the ground that is similar to the Arctic regions on here on Earth. The Phoenix did land in the polar region on Mars.
To see the image gallery from NASA.....click here
Recent Comments