Threadfall...the enemy that comes back again and again and again... The problem is determining when and where it will come so we can adequately and truly portray this in our writing. The Shared Tenth Pass now has that information available!

Please note: these are not official, McCaffrey-approved Threadfall maps. These are maps that combine information from the McCaffrey/Alm Threadfalls maps and calculations done by other fans to determine how frequently Thread falls, as well as our own logicking. However, these charts are consistent and follow a logical pattern.

Refer to the map below to locate the individual Threadfall paths. There are a total of 126 sequences, two of each.

Okay, so now you have the map and you know WHERE Thread is going to fall. Time to figure out the WHEN!

Two Threadfalls happen at the same time. Don't ask me why - that's just how it was shown on Anne McCaffrey's Threadfall map. The above map is as faithful to the originals as I could make them, but the official maps don't even match each other, so... Yeah. :)

For the Shared Tenth Pass, Threadfalls are 7 hour and 15 minutes apart. That's after one starts, 7 hours and 15 minutes later, the next will start. The order of 'Falls is sequential, even if the Fall paths are not.

Also: keep in mind that Pern has 26 hours in the day, and therefore 26 time zones. Threadfall times are given at the Pernese version of the Prime Meridian - or starting with the timezone furthest east, for my own convenience. :) So when a 'Fall starts at 14:00, remember to take into account that you'll need to update the time to reflect the timezone of the area where it's actually 'Falling. For quick reference, here's the time zones for the Weyrs:

StarRise Benden Igen Ista/Telgar High Reaches Fort Far Western	-6 hours -11 hours -13 hours -14 hours -16 hours -17 hours -23 hours		Theran Sable StarRise-Crystal Southern Crescent Haven	-6 hours -9 hours -11 hours -13 hours -19 hours -25 hours

 

Here are the Fall Paths and durations for the individual Weyrs. Fall paths that are followed by a, b, and/or c and Falls that are following over islands, or along coast lines, and part of the 'Fall is over open water, where Thread doesn't need to be flamed. You can click on the Weyr to get an enlarged view of that Weyr's territory.

 

StarRise	Fort	High Reaches	Telgar	Benden	Igen	Ista
10      29m 19a    2h 51m 19b    3h 1m 19c    10m 23      6h 27      3h 29m 28      1h 35m 29      Watch 32      43m 33      48m 38      29m 43      10m 49      24m 53      38m 55      10m 59      24m 63      10m	44      1h 35m 49      3h 38m 54      4h 7m 55      1h 16m 59      1h 16m	29      48m 34      3h 39m 39a    4h 39b    1h 35m 43      57m 44      3h 10m 48      38m 53      1h 16m	30      2h 23m 34      2h 4m 35      2h 4m 40      4h 44      1h 54m	31      19m 36      2h 42m 37      2h 23m 40      2h 13m 41      2h 23m 42      1h 7m 45      1h 7m 47      1h 35m 51      1h 26m	37      3h 1m 41      3h 1m 45      4h 45m 46      1h 7m 50      2h 32m 51      2h 23m	46a    1h 35m 46b    29m 47      38m 50      19m 51a    48m 51b    1h 45m 52      1h 2m 60      2h 56m 61      2h 42m

 

Far Western	Haven	Crescent	Southern	StarRise-Crystal	Sable	Theran
16      57m 21      1h 7m 25      1h 26m 31      29m 32      1h 16m 35      19m 36      48m 37a    2h 42m 37b    29m 41      3h 38m 45      1h 16m 46      1h 7m 47a    10m 47b    10m 47c    34m 51      19m 52      19m 57a    1h 26m 57b    10m 57c    10m 62      10m 67      10m 76      5m 77a    19m 77b    5m 77c    7m	92      3h 53m 93a    2h 28m 93b    2h 28m 94      24m 96      48m 97      2h 13m 98      2h 4m 102    3h 53m 103    6h 106    2h 9m 107    6h 108    2h 13m 116    2h 9m	75      1h 7m 84a    1h 26m 84b    57m 85      4h 3m 88      19m 89      3h 58m 91      43m 94      5h 42m 95      4h 45m 98      3h 58m 99      6h 100    6h 104    5h 14m 105    3h 39m 108    3h 53m	66a    1h 16m 66b    1h 35m 66c    48m 71      1h 2m 75      2h 42m 76      6h 79      57m 80      6h 81      1h 35m 85      1h 54m 86      4h 55m 89      34m 90      6h 91      5h 33m 95      1h 21m 96      4h 7m 101    5h 38m 105    1h 21m 106    2h 51m	67      1h 35m 77      2h 32m 81      2h 47m 82      6h 83      1h 16m 86      2h 28m 87      5h 9m 92      6h 96      1h 30m 97      4h 36m 102    3h 48m 103    38m 106    1h 35m 107    1h 54m	64      19m 68      38m 69      34m 73a    2h 4m 73b    29m 74      2h 13m 78      6h 79      1h 7m 83      4h 50m 84      3h 53m 87      57m 88      5h 42m 89      3h 1m 93a    2h 56m 93b    10m 94      5h 4m 98a    3h 49m 98b    24m 98c    15m 99      3h 29m 100    1h 50m 103    4h 7m 104    4h 26m 108    4h 26m	58      5m 60      10m 64a    15m 64b    10m 64c    3m 65      2h 32m 69      15m 70      43m 74      3h 10m 75      2h 51m 79      4h 55m 84      2h 13m 85      3h 58m 89      3h 10m 90      2h 23m 91      5h 4m 92      2h 13m 94      57m 95      4h 17m 96      2h 13m 99      2h 32m 100    2h 4m 101    3h 29m 104    1h 12m 105    5h 4m 106    2h 37m 59a    15m 59b    10m 63a    5m 63b    5m 80a    29m 80b    1h 31m

 

Ready for more information? We have the Threadfall schedules for the rest of the Pass currently in the works! Click on the turn to find out when Thread is falling, and where, for specific days AND times!

Turn 36 | Turn 37 | Turn 38 | Turn 39 | Turn 40 | Turn 41 | Turn 42 | Turn 43 | Turn 44 | Turn 45 | Turn 46 | Turn 47 | Turn 48 | Turn 49 | Turn 50