Hurricane Lowell to Impact Kauai; Heat Continues in the South-Central U.S.

Hurricane Lowell is forecast to pass west of Kauai today. Impacts such as high surf and heavy rain could impact all of the islands. A Hurricane Warning is in effect for Kauai, Niihau and the surrounding coastal waters. Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley, as well as in the Southwest this week with limited nighttime relief. Read More >

Meteorological Calculator
(Thanks to Ron Murphy, NWS Binghampton, NY and Bryan Ruby, NWS Sioux Falls, SD for writing some of these scripts.)

Temperature Conversion
Enter a number then click on the appropriate number to see the result.
Fahrenheit (^oF)
Celsius (^oC)

Windchill Calculation
Enter in the air temperature (T_air) in degrees Fahrenheit and wind speed in mph, then click on the Calculate WC to compute the windchill (WC). (Note: Wind Chill Temperature is only defined for temperatures at or below 50 degrees F and wind speeds above 3 mph.)
T_air	Wind (mph)	New Wind Chill Index	Old Wind Chill Index
More information about the windchill equation.

Relative Humidity Calculation
Enter in the air temperature (T_air) and dew point temperature (T_dp) in degrees Fahrenheit (^oF) then click on the Calculate RH to compute the relative humidity (RH).
T_air		T_dp

Heat Index Calculation
Enter in the air temperature (T_air) in degrees Fahrenheit and relative humidity (RH) in percent (without the % sign), then click on the Calculate HI to compute the heat index (HI).
T_air	RH	T_dp=
OR
T_air	T_dp	RH=
More information about the heat index equation.

Wind Speed Conversion
Enter a wind speed in the box below...then select "convert".
	Answers:
mph	mph
knots	knots
m/s	m/s
ft/s	ft/s
km/h	km/h

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