Issuance Schedule

Robert Chapin
2017-01-16T21:53:29+00:00

« 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