Zeta Heading Toward the Gulf Coast; Snow and Ice Across the Southern Rockies & High Plains

Zeta is forecast to bring hurricane conditions, life-threatening storm surge, and heavy rainfall to portions of the northern Gulf Coast by late Wednesday. Meanwhile, areas of snow, sleet, and freezing rain will continue from the southern Rockies into the southern High Plains. Farther west, critical fire weather conditions are expected to persist over parts of California and the Southwest U.S. Read More >

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The Weather Calculator

by Tim Brice and Todd Hall

A portable version of the Weather Calculator is now available

Temperature Conversions:
Temperature Unit Conversion	Formulas
Heat Index	Formula
Wind Chill	Formulas
Cricket Chirps (Just for fun)	Formula
Moisture Conversions
Dewpoint and Wet-bulb from Relative Humidity	Formulas
Relative Humidity and Wet-bulb from Dewpoint	Formulas
Relative Humidity and Dewpoint from Wet-bulb	Formulas
Vapor Pressure	Formulas
Mixing Ratio	Formulas
Virtual Temperature	Formulas
Pressure Conversions
Pressure Unit Conversion	Formulas
Station Pressure	Formulas
Altimeter Setting	Formulas
Pressure Altitude	Formulas
Density Altitude	Formulas
Wind Conversions
Wind Speed Unit Conversion	Formulas
Misc
Speed of Sound	Formulas
Weather Term Calculator (Just for fun)
Showalter Index	Formulas
Flood Return Period