National Weather Service United States Department of Commerce

Heavy Rain and Flooding in South Texas; Pacific Storm Continuing to Impact the Pacific Northwest

Thunderstorms will continue to bring heavy to excessive rain and possible flooding over the middle and lower Texas Gulf Coast through tonight. A Pacific storm will continue to bring gusty to high winds, hazardous seas, low elevation rain, and mountain snow to the Pacific Northwest through Friday. Snow will then push into the northern Rockies on Saturday. Read More >

National Weather Service Hanford, CA
Meteorological Calculator
Thanks to Ron Murphy, NWS Birmingham, AL for writing the JavaScript.

Temperature Conversion

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Wind Speed Calculations

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 mph    knots       m/sec      km/hr  

Wind Chill Calculation

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(F)

Wind
(mph)

Index 

Relative Humidity Calculation

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Dew
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Heat Index Calculations

Enter the temperature in degrees Fahrenheit and relative humidity (RH) in percent (without the % sign), or the Dew Point (Tdp).  Then click on the Calculate HI to compute the heat index (HI).
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RH

HI 

Tdp

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Temp (F)

Tdp

HI  RH 

Station Pressure Calculation

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i.e. Fresno Air Terminal = 333
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