Monday, October 14, 2013

Temperature Converter

Do you ever get confused with the Fahrenheit and Celsius temperature scales? Temperature scales are a bit ambiguous. Here's a little history...
In 1742 Anders Celsius created a temperature scale based on the freezing and boiling point of water. Today, 100 °C is the boiling temperature of water and 0 °C is water's freezing temperature. Earlier, in 1724, Daniel Gabriel Fahrenheit invented the mercury-in-glass thermometer. 100 °F was the hottest day in Germany, and 0 °F was the coldest day in German. Today, only the United States uses the Fahrenheit scale and everyone else in the world uses the Celsius scale.
Use the calculators below to convert temperatures between the different scales.
Enter a number in the first box and click the equal sign to see the conversion.

Convert from °C to °F.


°C °F

Convert from °F to °C.


°F °C
Here is a summary of how Celsius compares to the Fahrenheit scale:
0°C32°FFreezing
10°C50°FJacket Weather
20°C68°FComfortable Weather
30°C86°FWarm Summer Day
40°C104°FVERY HOT!



Friday, October 11, 2013

Shutdown

The government shutdown has limited weather forecasting abilities. Weather forecasts and warnings are still issued, but the National Weather Service is running on minimum resources. The link is an interesting article that brings to light how important the National Weather Service really is to protecting life and property.

Sunday, October 6, 2013

WX Discussion

I enjoyed reading the weather discussion today. It's been a beautiful autumn day.

  .DISCUSSION...BASICALLY A STRAIGHT FORWARD FORECAST FOR TODAY WITH 
  SUNNY SKIES AND TEMPERATURES WARMING TO NEAR NORMAL LEVELS. THE 
  ONLY ODDITY FOR TODAY IS THAT THE TEMPERATURES ALOFT HAVE WARMED 
  NICELY OVERNIGHT AND THE MOUNTAINS AND ANY ELEVATION ABOVE ABOUT 
  6K FT SHOULD SEE A 10-15 DEGREE WARM UP OVER YESTERDAY. MEANWHILE 
  THE VALLEY INVERSION IS STRONG AND WITH LIGHT WINDS ALOFT NO 
  MIXING IS EXPECTED TODAY SO VALLEY TEMPERATURES WILL BE INHIBITED. 
  SO IF ANY PORTION OF THE FORECAST CAN GO WRONG IS THAT VALLEY 
  TEMP FORECASTS MAY BE A LITTLE ON THE OPTIMISTIC SIDE. WILL LET IT 
  RIDE AS ITS NOT A BIG DEAL...IT WILL FEEL WARM DUE TO NEARLY CALM 
  CONDITIONS AND BRIGHT SUNSHINE. 
   
  OTHERWISE FORECAST IN MARVELOUS SHAPE.

Saturday, September 21, 2013

Signs of an Approaching Cold Front

There are many signs of an approaching cold front. The first sign is a happy meteorologist. This sign is especially noticeable in early fall when the first front of the season pushes by.

In the last 24 hours we've seen quite a drop in pressure in Spanish Fork. Decreased pressure is another sign some kind of weather pattern change.


We've also seen a consistent and strong southwest flow. It'll be breezy the rest of the day with winds picking up as the front gets closer.


You might not expect it, but another sign of a cold front is rising temperatures. Even this morning we've see temperatures rise quickly. I expect we'll be in the mid 80's by the afternoon.


Now we can look at a weather model and see when the cold front is expected to come through Utah and Spanish Fork. The below figure is the GFS (Global Forecast System) model run at 12z. The forecast shown is for Sunday at 18z (12:00 MT). This model shows the front will pass through Utah between midnight and 3:00 Sunday morning. There is a lot of information here, so I'll only point out some of the most interesting parts.

The upper-left figure shows the height of the dynamic tropopause. All that means is the blue color indicates low heights and orange colors indicate high heights. The blue, low heights indicates a trough or approaching cold front.
The bottom-right figure shows 6 hour precipitation. The model doesn't show much rain will accumulate in northern Utah, but the mountains have a good change. If it's cold enough, the mountain tops may see some snowflakes. Yep, winter is on it's way again. It seems like it comes around every year.


So enjoy this warm September day, but keep you jacket in a place you can find it. You'll need it tomorrow morning.