^ = ~.~
Pattern of the "crazy rain" and snow NPID RNG advancement:
C74ADE85 09FC Start
1C74006F 09FD +2
1C74006F 09FE +0
302C29C9 09FF +2
302C29C9 0A00 +0
3E551113 0A01 +2
3E551113 0A02 +0
9C18E8CD 0A03 +2
E88EFF77 0A05 (+0)+2
F4E75F91 0A07 (+0)+2
Still 60 times per second. However the rain lets up at different spots and starts slowly at times (one raindrop at a time).
You'd have to calibrate for doing the roamer, to see what frame you innately hit while going at a precise (timed) pace.
There's no moving NPCs in the building, so that's a plus.
Takes around 25 seconds to do the event, with the PID being generated somewhere around the (453-465) frame from the initial seed. Carried out in Spring, as there is no rain until the screen flashes yellow.
279A6AF7 18B542B1 Frame -46 Initial Seed
A4AB08FD BA2F810F Frame 0 Before Walking Outside
Starting delay: 048E
0ED47FE8 E4A87CA2 Frame 5 Appears
F1C83D4B A2E5622C Frame 6 Jagged Border, Colors start changing
DE00F05A 1954C70B Frame 7 Happens right after screen flashes yellow
6B0F32FC E49BE55A Frame 9 Raindrops start falling
Rain is crazy.
41CCC6D1 41D1B442 Frame 404 Leading up...
280DE838 7D5BAF49 Frame 405 (Unshown)
387134DB B3B34ABD Frame 406 Rain advancing..
B016AC2A 2E5CD0A7 Frame 407 (Unshown)
08610555 A2042B37 Frame 408 Rain advancing.
3B9B364C 3F33EAA2 Frame 409 (Unshown)
2085B6BF A479300A Frame 410 Rain advancing?
F6ECEF1E F8277A81 Frame 411 (Unshown)
696A0399 5F7C389C Frame 412 1 delay before IVs generated (0A62)
F815EB20 A76D23E6 Frame 413 (Unshown) - PID Call
89808263 1C8FF04E Frame 414 IV's generated (0A63), (0A64)
5A560AD2 D0130226 Frame 415 (Unshown) - ???/Rain advances
93A1459D DED16F3E Frame 416 (Unshown) - ???/Rain advances
B0531AB4 348C2969 Frame 417 Roamer PID set [A76D23E6]
Ending delay: 0A65 = 1495 = 24.916 seconds
PID Frame: 413 + 46 = Frame 459 from initial seed
Roamer PID Generation:
Unaltered, from the upper seed like all other PIDs, right after the IVs are generated.
PID didn't change when I had different IDs (which would have it end up being shiny). Seems like it can be shiny.