Snow Squalls Across the Great Lakes, Northern Mid-Atlantic, and Northeast; Severe Storms in the Southern Plains Wednesday into Thursday

Snow Squalls Across the Great Lakes, Northern Mid-Atlantic, and Northeast; Severe Storms in the Southern Plains Wednesday into Thursday

Weather Calculator

The threat of heavy snowfall and gusty winds continue for portions of the Great Lakes, the northern Mid-Atlantic, and New England through Wednesday. There is the potential for snow squalls that may produce dangerous travel. A storm system is expected to produce severe storms over the Southern Plains Wednesday and Thursday. Heavy rain may produce flash and river flooding. Read More >

Temperature Conversion
Enter a number then click on the the conversion button.
Fahrenheit (^oF)
Celsius (^oC)

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

Heat Index Calculations
Enter the temperature in degrees Fahrenheit and relative humidity (RH) in percent (without the % sign), or the Dew Point (T_dp). Then click on the Calculate HI to compute the heat index (HI).
Temp (^oF)	RH	HI	T_dp
OR
Temp (^oF)	T_dp	HI	RH

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Station Pressure Calculation
What is the current altimeter (inches)?
What is the station elevation? (feet) i.e. St. Louis - Lambert= 710

The Station Pressure in inches is:
The Station Pressure in millibars is:
The Pressure Altitude in feet is:

Wind Speed Calculations

Enter a speed into any blank to convert to all other wind speeds.

mph knots m/sec km/hr

Wind Chill Calculation

Enter the temperature in degrees Fahrenheit and wind speed in mph, then click on the Calculate WC to compute the windchill index.

Temp
(^oF)

Wind
(mph)

Wind Chill Index