Issuance Schedule

« Prog Charts Archive

These data are the results of monitoring the differences between the official and actual publication times of surface prog charts.

Official Prog Charts Issuance Schedule (AC 00-45H 5.16.2)

  02z cycle 04z cycle 07z cycle 09z cycle 14z cycle 16z cycle 19z cycle 21z cycle
6-Hour 0200z       1400z      
12-Hour 0200z       1400z      
18-Hour   0430z       1630z    
24-Hour   0430z       1630z    
30-Hour     0730z       1930z  
36-Hour     0730z       1930z  
48-Hour     0730z       1930z  
60-Hour       0900z       2100z

Actual Issuance Experience Since 12/06/2016

  02z cycle 04z cycle 07z cycle 09z cycle 14z cycle 16z cycle 19z cycle 21z cycle
6-Hour 0208z – 0330z       1410z – 1540z      
12-Hour 0208z – 0339z       1410z – 1541z      
18-Hour   0304z – 0434z       1449z – 1632z    
24-Hour   0317z – 0455z       1449z – 1659z    
30-Hour     0534z – 0710z       1828z – 1936z  
36-Hour     0534z – 0711z       1829z – 1950z  
48-Hour     0535z – 0716z       1829z – 1944z  
60-Hour     0536z – 0736z       1836z – 1951z  

Valid Times Based On Experience

  02z cycle 04z cycle 07z cycle 14z cycle 16z cycle 19z cycle
6-Hour 06z     18z    
12-Hour 12z     00z    
18-Hour   18z     06z  
24-Hour   00z     12z  
30-Hour     06z     18z
36-Hour     12z     00z
48-Hour     00z     12z
60-Hour     12z     00z

Former Prog Charts Issuance Schedule (AC 00-45G 8.1.2)

  17z cycle 23z cycle 05z cycle 09z cycle
12-Hour 1720z 2310z 0530z 0935z
24-Hour 1720z 2310z 0530z 0935z
36-Hour 1720z   0530z  
48-Hour 1720z   0530z  

Actual Issuance Experience Since 10/26/2011

  17z cycle 23z cycle 05z cycle 09z cycle
12-Hour 1247z – 1456z 1452z – 1755z 0115z – 0234z 0303z – 0527z
24-Hour 1459z – 1755z 1740z – 2126z 0309z – 0538z 0542z – 0752z
36-Hour 1748z – 2134z   0550z – 0805z  
48-Hour 1758z – 2201z   0559z – 0818z  

Former Issuance Prediction

  02z cycle 04z cycle 07z cycle 14z cycle 16z cycle 19z cycle
12-Hour 0115z – 0234z 0303z – 0538z   1247z – 1456z 1459z – 1713z  
24-Hour   0303z – 0538z 0542z – 0818z   1459z – 1713z 1740z – 2201z
36-Hour     0542z – 0818z     1740z – 2201z
48-Hour     0542z – 0818z     1740z – 2201z
60-Hour     0542z – 0818z     1740z – 2201z