function thickness(form)
{
thk=form.fivehgt.value-form.thoushgt.value;
form.THKfive.value=thk
if (thk>5400) {form.THKprecip.value=”Rain”}
else
{form.THKprecip.value=”Snow”}
};
function Celsius(form)
{
TC=(.56*(form.TF.value-32));
form.TempC.value=TC;
};
function Fahrenheit(form)
{TF=Math.round(32+(form.TCC.value*1.8));
form.TempF.value=TF};
function HeatIndex(form)
{if (form.T.value < 75) {AT=form.T.value}
else
{
AT=Math.round((-42.379+
(2.04901523*form.T.value)+
(10.14333127*form.RH.value)-
(0.22475541*form.T.value*form.RH.value)-
(6.83783e-3*form.T.value*form.T.value)-
(5.481717e-2*form.RH.value*form.RH.value)+
(1.22874e-3*form.T.value*form.T.value*form.RH.value)+
(8.5282e-4*form.T.value*form.RH.value*form.RH.value)-
(1.99e-6*form.T.value*form.T.value*form.RH.value*form.RH.value)));
}
form.TempAT.value=(AT);
};
function WindChill(form)
{if (form.Wind.value 1300) {form.THKprecips.value=”Rain”}
else
{form.THKprecips.value=”Snow”}
};
function TTI(form)
{
var x=form.CEL.value-0;
var y=form.DPEC.value-0;
Index= ( x + y) – (2*form.TempFH.value);
form.Totals.value=Index;
if (Index 55) {form.storm.value=”Severe”}
};
Meteorology Conversions
1. Convert Fahrenheit to Celsius – Input Temp ° F
Celcius temperature ° C.
2. Convert Celsius to Fahrenheit – Input Temp ° C
Fahrenheit temperature ° F.
3. Determine Heat Index – Input Temperature ° F
Input RH%
Heat Index ° F.
4. Determine Wind Chill – Input Temperature ° F
Input Wind (mph)
Wind Chill ° F.
5. Determine Relative Humidity – Input Temp ° F
Input Dew Point ° F
Relative Humidity: %.
6.Determine Dew Point – Input Temp ° F
Input RH%
Dew Point: ° F.
7. Determine 1000-500mb Thickness – Input 1000mb Hgt (meters)
Input 500mb Hgt (meters)
Thickness Meters. Possible Precip Type:
.
Regional Rain/Snow Lines….South = 537, Western Mountains = 543-549, West Coast = 525.
8. Determine 1000-850mb Thickness – Input 1000mb Hgt (meters)
Input 850mb Hgt (meters)
Thickness Meters.
Possible Precip Type: .
9. Total Totals Index – Input 850mb Temp ° C
Input 850mb Dew Point ° C
Input 500mb Temp ° C
Total Totals Index: .
Thunderstorm Type:.
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