diff --git a/app.js b/app.js
index edc4499..b491f88 100644
--- a/app.js
+++ b/app.js
@@ -150,11 +150,13 @@ function getGribData(targetMoment){
             return;
         }
 
-		var stamp = moment(targetMoment).format('YYYYMMDD') + roundHours(moment(targetMoment).hour(), 6);
+		var date = moment(targetMoment).format('YYYYMMDD');
+		var hour = roundHours(moment(targetMoment).hour(), 6);
+		var stamp = date + hour;
 		request.get({
 			url: baseDir,
 			qs: {
-				file: 'gfs.t'+ roundHours(moment(targetMoment).hour(), 6) +'z.pgrb2.1p00.f000',
+				file: 'gfs.t'+ hour +'z.pgrb2.1p00.f000',
 				lev_10_m_above_ground: 'on',
 				lev_surface: 'on',
 				var_TMP: 'on',
@@ -164,7 +166,7 @@ function getGribData(targetMoment){
 				rightlon: 360,
 				toplat: 90,
 				bottomlat: -90,
-				dir: '/gfs.'+stamp
+				dir: '/gfs.'+date + '/' + hour
 			}
 
 		}).on('error', function(err){