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Time |
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Temp | Humidity | Dewpoint | Cape | Precip | Convective Cloud | Storm Risk |
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"+df(jjx);}else{var inc=1;if (exts[row] % 3 ==0){inc=3;} to=df(hx)+"
to
"+df(hx+inc);}hx="tm"+row;document.getElementById(hx).innerHTML=to;var hidden=""; if (exts[row] <=54 && exts[row] % 3 != 0 && expanded==0){hidden="none";}hx="row"+row;$(document).find("."+hx).each(function(){this.style.display=hidden;});var temp=decodetemp(forecastdata.substr((row*linelength)+0,2));var humidity=dk64(forecastdata.substr((row*linelength)+2,2));var dewpoint=decodetemp(forecastdata.substr((row*linelength)+4,2));var cape=dk64(forecastdata.substr((row*linelength)+6,3));var prec=dk64(forecastdata.substr((row*linelength)+9,3))/100;if (prec==999.99){prec=0;}var cx=0;var cx2=0;cx3=0; if (prec>2000){prec-=2000;cx=1;}var convcloud=dk64(forecastdata.substr((row*linelength)+12,2));stormrisk=dk64(forecastdata.substr((row*linelength)+14,2));;if (rd==0 && exts[row]<54 && exts[row] % 3==0) { var row2=row+1; var row3=row+2;var temp2b=decodetemp(forecastdata.substr((row2*linelength)+0,2)); var temp3=decodetemp(forecastdata.substr((row3*linelength)+0,2)); temp=Math.max(temp,temp2b,temp3);var humid2=dk64(forecastdata.substr((row2*linelength)+2,2)); var humid3=dk64(forecastdata.substr((row3*linelength)+2,2)); humidity=Math.max(humidity,humid2,humid3);var cape2=dk64(forecastdata.substr((row2*linelength)+6,3)); var cape3=dk64(forecastdata.substr((row3*linelength)+6,3)); cape=Math.max(cape,cape2,cape3);var pc2=dk64(forecastdata.substr((row2*linelength)+9,3))/100; var pc3=dk64(forecastdata.substr((row3*linelength)+9,3))/100; if (pc2==999.99){pc2=0;} if (pc3==999.99){pc3=0;} if (pc2>2000){pc2-=2000;cx2=1;}if (pc3>2000){pc3-=2000;cx3=1;} prec+=pc2;prec+=pc3;var cc2=dk64(forecastdata.substr((row2*linelength)+12,2)); var cc3=dk64(forecastdata.substr((row3*linelength)+12,2)); convcloud=Math.max(convcloud,cc2,cc3);var st2=dk64(forecastdata.substr((row2*linelength)+14,2));var st3=dk64(forecastdata.substr((row3*linelength)+14,2));stormrisk=Math.max(stormrisk,st2,st3);}var bc=gett2mcolour(roundit(temp,0)); var tempo='
'+roundit(temp,0)+"°c
"; hx="te"+row; document.getElementById(hx).innerHTML=tempo;var hc=gethumidcolour(humidity); humidity='
'+humidity+"%
"; hx="hu"+row; document.getElementById(hx).innerHTML=humidity;var bc=gett2mcolour(roundit(dewpoint,0)); var tempo='
'+roundit(dewpoint,0)+"°c
"; hx="dp"+row; document.getElementById(hx).innerHTML=tempo;var bc=getcapecolour(roundit(cape,0));var tempo='
'+roundit(cape,0)+"j/kg
";var hx="ca"+row;document.getElementById(hx).innerHTML=tempo;prec=roundit(prec,3);//var cx=0;//if (prec>2000){prec-=2000;cx=1;}prec=roundit(prec,3); var pc=getpreccol(prec); var pw=precwords(prec);if (cx==1 && cx2==1 && cx3==1){pw="Showers";} var preco='
'+prec+"mm
"; preco+='
'+pw+"
";hx="pr"+row;document.getElementById(hx).innerHTML=preco;var cl=getcloudcol(convcloud); hx="cc"+row; var cloudcovero='
'+convcloud+"%
"; document.getElementById(hx).innerHTML=cloudcovero;var st=getriskcol(stormrisk); hx="st"+row; stormrisk='
'+stormrisk+"%
";document.getElementById(hx).innerHTML=stormrisk;if (corf=="c"){}else{ctof();} // if (expanded==1 && firstx != 1){ // for (var i=0;i < exts.length;i++) // { // if (i% 3 != 0){continue;} // toggleexpand(i,expanded);// // }if (expanded==1 && exts[0] <=54){ document.getElementById("expb").innerHTML="Hide Hourly";document.getElementById("expbb").innerHTML="Hide Hourly";}else if (exts[0]<=54){document.getElementById("expb").innerHTML="Show Hourly";document.getElementById("expbb").innerHTML="Show Hourly";}}var hmm=0;function updatenwforecast(){var rows=forecastdata.length/linelength; displayrows=rows; var cc=0;if (hmm==1) { document.location="index.cgi?action=world;loc=U,18351~18351;sess="; } for (var rowxx=0;rowxx < 24;rowxx++) { if (rowxx >= rows) { var hx="row"+rowxx; $(document).find("."+hx).each(function(){this.style.display='none';}); continue; }var hidden=""; if (exts[rowxx] <=54 && exts[rowxx] % 3 != 0){hidden="none";}updatenwforecastrow(rowxx,expanded,1);}}function roundit(value,dp) { var dpx=Math.pow(10,dp); return(Math.round(value * dpx) / dpx);}function df(inx){ inx=inx%24; if (inx==24){inx="00";} inx+=""; if (inx.length<2){inx="0"+inx;} inx+=":00"; return inx;}function convctf(inx){ if (inx==corf){return;} corf=inx; setCookie("corf",inx,999);if (inx=="c") { ftoc(); } else { ctof(); }}function doexpand(){if (54==1){return;} if (expanded==0) { expanded=1; document.getElementById("expb").innerHTML="Hide Hourly";document.getElementById("expbb").innerHTML="Hide Hourly"; setCookie("exfc",1,999);//if (andr==1 && docwidth<840){loadpagex(page,1);} } else { expanded=0; document.getElementById("expb").innerHTML="Show Hourly";document.getElementById("expbb").innerHTML="Show Hourly"; setCookie("exfc",0,999); } for (var i=0;i < exts.length;i++) { if (i% 3 != 0){continue;} toggleexpand(i,expanded); }}function toggleexpand(inx,dx){if (exts[inx]>54-3){return;}if (54==1){return;} while (inx % 3 != 0) { inx-=1; } var stx=inx; var iny=inx+1; var rowx="row"+iny; var hold=document.getElementById(rowx).style.display;if (hold == "none" || dx==1) {var h1="tm"+iny;if (document.getElementById(h1).innerHTML.indexOf("NaN")>-1){ $(document).find("."+rowx).each(function(){this.style.display='none';});}else{ $(document).find("."+rowx).each(function(){this.style.display='';});} iny+=1; rowx="row"+iny;h1="tm"+iny;if (document.getElementById(h1).innerHTML.indexOf("NaN")>-1) { $(document).find("."+rowx).each(function(){this.style.display='none';}); } else{ $(document).find("."+rowx).each(function(){this.style.display='';}); } updatenwforecastrow(stx,1,1); } else { $(document).find("."+rowx).each(function(){this.style.display='none';}); iny+=1; rowx="row"+iny; $(document).find("."+rowx).each(function(){this.style.display='none';}); updatenwforecastrow(stx,0,1); }}function submitplace(){ var hold=document.getElementById("fcnewloc").value;; var holdb=document.getElementById("ctid").value; if (holdb){hold=holdb+"~"+hold;} var url="index.cgi?action="+program+";ct="+hold+"#forecasts"; document.location=url;}function getpriority(inx){inx=inx+""; var out=0; inx=inx.replace("_nt",""); if (inx=="snow") {out=1;} else if (inx=="snowy") {out=2;} else if (inx=="flurries") {out=3;} else if (inx=="rainsnow") {out=4;} else if (inx=="icyrainsnow") {out=5;} else if (inx=="rainicy") {out=6;} else if (inx=="thunderstorm") {out=7;} else if (inx=="sunthunderstorm"){out=8;} else if (inx=="sunthund") {out=9;} else if (inx=="hail") {out=10;} else if (inx=="heavyrain") {out=11;} else if (inx=="rainwindy") {out=12;} else if (inx=="rain") {out=13;} else if (inx=="scatrain") {out=14;} else if (inx=="scshowers") {out=15;} else if (inx=="sunrain") {out=16;} else if (inx=="mscloudy") {out=17;} else if (inx=="ptcloudy") {out=18;} else if (inx=="cloudy") {out=19;} else if (inx=="windy") {out=20;} else if (inx=="hot") {out=21;} else if (inx=="clr") {out=22;} else if (inx=="dust") {out=23;} else if (inx=="smoke") {out=24;}if (out==0){out=9999;} return out;}var tcolour=new Array();function gett2mcolour(inx){ inx+=16; inx=roundit(inx/2,0);if (inx<0){inx=0;}if (inx>29){inx=29;} return tcolour[inx];}tcolour[0]="bf5ebf;";tcolour[1]="bf5ebf;";tcolour[2]="bf5ebf;";tcolour[3]="bf5ebf;";tcolour[4]="c989c9;";tcolour[5]="1ca2ff;";tcolour[6]="54b9ff;";tcolour[7]="79c7fd;";tcolour[8]="99d5ff;";tcolour[9]="00bc6a;";tcolour[10]="00bc1f;";tcolour[11]="01db25;";tcolour[12]="59ed00;";tcolour[13]="99ff33;";tcolour[14]="ccff33;";tcolour[15]="ccff00;";tcolour[16]="ffff00;";tcolour[17]="ffcc00;";tcolour[18]="ffcc33;";tcolour[19]="ff9900;";tcolour[20]="ff6600;";tcolour[21]="ff3300; color: #ffffff;";tcolour[22]="ff1800; color: #ffffff;";tcolour[23]="ff0000; color: #ffffff;";tcolour[24]="ff0000; color: #ffffff;";tcolour[25]="ff0000; color: #ffffff;";tcolour[26]="ff0000; color: #ffffff;";tcolour[27]="ff0000; color: #ffffff;";tcolour[28]="ff0000; color: #ffffff;";tcolour[29]="ff0000; color: #ffffff;";function gethumidcolour(outx){ var humcol="";if (outx <= 10) {humcol="dafffa";}else if (outx <= 20) {humcol="92dfff";}else if (outx <= 30) {humcol="9cff92";}else if (outx <= 40) {humcol="5bfe4a";}else if (outx <= 50) {humcol="cdfe4a";}else if (outx <= 60) {humcol="f0ff00";}else if (outx <= 70) {humcol="ffc600";}else if (outx <= 80) {humcol="ff9600;";}else if (outx <= 90) {humcol="ff4800; color: #ffffff;";}else if (outx <= 100) {humcol="ff0000; color: #ffffff;";}return humcol;}function getpreccol(outx){ var preccol=""; if (outx <= 0) {preccol="ffffff";}else if (outx < 1) {preccol="aefeff";}else if (outx <= 2) {preccol="56d2fb";}else if (outx <= 5) {preccol="37ef19";}else if (outx <= 10) {preccol="fcff00";}else if (outx > 10) {preccol="ff9600; color: #ffffff;";} return preccol;}function getcloudcol(inx){ var cloudout=""; if (inx < 10) {cloudout="ffffff; color: #000000;";} else if (inx < 20) {cloudout="eeeeee; color: #000000;";} else if (inx < 30) {cloudout="dddddd; color: #000000;";} else if (inx < 40) {cloudout="cccccc; color: #000000;";} else if (inx < 50) {cloudout="bbbbbb; color: #000000;";} else if (inx < 60) {cloudout="aaaaaa; color: #000000;";} else if (inx < 70) {cloudout="999999; color: #ffffff;";} else if (inx < 80) {cloudout="888888; color: #ffffff;";} else if (inx < 90) {cloudout="777777; color: #ffffff;";} else {cloudout="555555; color: #ffffff;";} return cloudout;}function getriskcol(perc){ var snrcol=""; if (perc <= 10) {snrcol="dafffa";}else if (perc <= 20) {snrcol="92dfff";}else if (perc <= 30) {snrcol="9cff92";}else if (perc <= 40) {snrcol="5bfe4a";}else if (perc <= 50) {snrcol="cdfe4a";}else if (perc <= 60) {snrcol="f0ff00";}else if (perc <= 70) {snrcol="ffc600";}else if (perc <= 80) {snrcol="ff9600; color: #ffffff;";}else if (perc <= 90) {snrcol="ff4800; color: #ffffff;";}else if (perc <= 100) {snrcol="ff0000; color: #ffffff;";} return snrcol;}function ftoc(){ $('div[name="tfc"]').each( function(){ var h=this.innerHTML; var t=h.match(/F/); if (t != "F"){return;} var numb=h; numb=h.replace(/[^0-9.-]+/g, ''); //var numb = h.match(/^-{0,1}\d+/)[0]; numb=5.0/9.0 * (numb - 32.0); this.innerHTML=roundit(numb,1)+'°c'; }); $('div[name="pfc"]').each( function(){ var h=this.innerHTML; var t=h.match(/\"/); if (t != "\""){return;} //var numb=h.match(/^-{0,1}\d*\.{0,1}\d+/)[0]; var numb=h; numb=h.replace(/[^0-9.-]+/g, ''); numb*=25.4; numb=roundit(numb,2); this.innerHTML=numb+'mm'; } );$('td[name="tfc"]').each( function(){ var h=this.innerHTML; var t=h.match(/F/); if (t != "F"){return;} var numb=h; numb=h.replace(/[^0-9.-]+/g, ''); //var numb = h.match(/^-{0,1}\d+/)[0]; numb=5.0/9.0 * (numb - 32.0); this.innerHTML=roundit(numb,1)+'°c'; }); $('td[name="pfc"]').each( function(){ var h=this.innerHTML; var t=h.match(/\"/); if (t != "\""){return;} //var numb=h.match(/^-{0,1}\d*\.{0,1}\d+/)[0]; var numb=h; numb=h.replace(/[^0-9.-]+/g, ''); numb*=25.4; numb=roundit(numb,2); this.innerHTML=numb+'mm'; } );}function ctof(){ $('div[name="tfc"]').each( function(){ var h=this.innerHTML; var t=h.match(/c/); if (t != "c"){return;} //var numb = h.match(/^-{0,1}\d+/)[0]; var numb=h; numb=h.replace(/[^0-9.-]+/g, ''); numb=9/5 * numb + 32; this.innerHTML=roundit(numb,1)+'°F'; }); $('div[name="pfc"]').each( function(){ var h=this.innerHTML; var t=h.match(/mm/) if (t != "mm"){return;} var numb=h; numb=h.replace(/[^0-9.-]+/g, ''); numb*=0.0393700787; numb=roundit(numb,3); this.innerHTML=numb+'"'; }); $('td[name="tfc"]').each( function(){ var h=this.innerHTML; var t=h.match(/c/); if (t != "c"){return;} //var numb = h.match(/^-{0,1}\d+/)[0]; var numb=h; numb=h.replace(/[^0-9.-]+/g, ''); numb=9/5 * numb + 32; this.innerHTML=roundit(numb,1)+'°F'; }); $('td[name="pfc"]').each( function(){ var h=this.innerHTML; var t=h.match(/mm/) if (t != "mm"){return;} var numb=h; numb=h.replace(/[^0-9.-]+/g, ''); numb*=0.0393700787; numb=roundit(numb,3); this.innerHTML=numb+'"'; });}function precwords(outx,coutx){ var outs=""; //if (outx<0.15){outx=0;} if (outx == 0) {outs="None";}else if ( outx < 2 && outx >= 0.15) {outs="Showers";} // else if (outx < 1) {outs="V Light";} // else if (outx >= 1 && outx < 2) {outs="Light";} else if (outx >= 2 && outx < 5) {outs="Moderate";} else if (outx >= 5 && outx < 10){outs="Heavy";} else if (outx >= 10) {outs="Torrential";}else if ( outx < 2 && outx >= 0.15) {outs="Showers";} return outs;}function setCookie(c_name,value,expiredays){ var exdate=new Date(); exdate.setDate(exdate.getDate()+expiredays); document.cookie=c_name+ "=" +escape(value)+ ((expiredays==null) ? "" : ";expires="+exdate.toGMTString())+"; path=/";}function getCookie(c_name){ if (document.cookie.length>0) { c_start=document.cookie.indexOf(c_name + "="); if (c_start!=-1) { c_start=c_start + c_name.length+1; c_end=document.cookie.indexOf(";",c_start); if (c_end==-1) c_end=document.cookie.length; return unescape(document.cookie.substring(c_start,c_end)); } } return "";}function getcapecolour(capex){ var capecolour="ffffff"; if (capex <= 0) {capecolour="dafffa";}else if (capex <= 100) {capecolour="99d5ff";}else if (capex <= 150) {capecolour="00bc1f";}else if (capex <= 200) {capecolour="59ed00";}else if (capex <= 300) {capecolour="ccff33";}else if (capex <= 400) {capecolour="ffff00";}else if (capex <= 500) {capecolour="ffcc00";}else if (capex <= 750) {capecolour="ffcc33";}else if (capex <= 1000) {capecolour="ff9900";}else if (capex <= 1250) {capecolour="ff6600";}else if (capex <= 1500) {capecolour="ff3300";}else if (capex <= 1750) {capecolour="ff1800";}else {capecolour="ff0000";}return capecolour;}function getliftcolour(liftx){ var liftcolour="ffffff"; if (liftx >= 10) {liftcolour="dafffa";}else if (liftx >= 5) {liftcolour="54b9ff";}else if (liftx >= 0) {liftcolour="00bc1f";}else if (liftx >= -2) {liftcolour="ffff00";}else if (liftx >= -4) {liftcolour="ff9900";}else if (liftx >= -6) {liftcolour="ff3300";}else if (liftx >= -8) {liftcolour="ff1800";}else {liftcolour="ff0000";} return liftcolour;}
Local Information For London
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Storm Forecast Info
You may not be familiar with a couple of the items within the storm forecast, the first one CAPE is a measure of the available energy in the atmosphere for convection (storms and showers), just because this level is high though, it doesn't guarantee that conditions will be right for storms. CAPE is an abbreviation of Convective Available Potential Energy and is measured in joules per kilogram.
Another term is Lifted Index, this is a measure of the buouyancy in the air. Negative numbers mean the air is buoyant so will rise, positive numbers inicate sinking air. The more buoyant the air is, the better chance there is that the CAPE can be tapped in to.