Continued Flood and Rip Current Risk from Chantal; Lingering Flood Watches in Central Texas

Chantal now a Tropical Depression. Flash flood concerns continue across portions of central North Carolina into Monday. Life-threatening surf and rip currents conditions are expected to continue at beaches along the U.S. east coast from northeastern Florida to the Mid-Atlantic states during the next day or so. Flood Watches and recovery continue across central Texas. Read More >

A Discussion on Water Vapor (Moisture)

QUESTION 3:

If the air temperature was 90 F with a relative humidity of 60 percent in the afternoon, would it feel more uncomfortable to a person than if it was 75 outside with a relative humidity of 100 percent in the morning?

ANSWER 3:

At 90 with a relative humidity of 60 percent, it would "feel" like 100 degrees outside; at 75 with a relative humidity of 100 percent, it would only "feel" like 80. Despite the much different relative humidity value, the absolute humidity or dewpoint would be about the SAME in both these cases (i.e., dewpoint of 75 degrees). This "feeling" that combines air temperature and moisture in the air is referred to as the "heat index." Please return to the text for further information.

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Continued Flood and Rip Current Risk from Chantal; Lingering Flood Watches in Central Texas

Water Vapor answer 3