16. Tropical Climatic Conditions
16.1 TROPICAL SCENARIO: A Tropical scenario is defined as one in which PTO Terrain (G.1) is in effect.
16.2 WEATHER: The following chart is used in lieu of the E3 Temperate Weather Chart to determine the weather of a Tropical DYO scenario.
| TROPICAL WEATHER CHART | ||
| Final DR | Weather | DRM |
| ≤ 2 | Heavy Rainab & Mud | -1 June-Sept. scenario in Burma/ |
| 3 | Heavy Rainac | +2 Nov-April scenario in Burma/ |
| 4 | Mud & Overcast | +3 8-9/42, or 2-8/44, scenario using U.S.M.C. |
| 5 | Mud | |
| 6 | Overcastd | |
| 7 | Overcast | |
| 8 | Clear & Gusty | |
| ≥ 9 | Clear | |
| a: | The scenario begins with Heavy Rain (i.e., rain of increased intensity as per E3.51) already falling, and such rain lasts throughout the scenario. |
| b: | All streams, ponds and rivers are flooded [EXC: rivers are not flooded if Overlay Be7 is in use; 13.11], and all river current is heavy. |
| c: | All streams are deep, and all river current is moderate. |
| d: | If rain starts, it does so as Heavy Rain that will last throughout the scenario. |
16.3 EC: The following chart is used in lieu of the B25.5 EC Chart to determine the EC of a Tropical DYO scenario.
| TROPICAL EC CHART | |||
| Final dr | EC | EC DRM/drm |
drm |
| ≤ 1 | Mud | -3 | -2 June-Sept. scenario in Burma/ |
| 2-3 | Wet | -2 | +2 Nov-April scenario in Burma/ |
| 4-5 | Moist | -1 | +3 8-9/42, or 2-8/44, scenario using U.S.M.C. |
| 6-7 | Moderate | 0 | |
| ≥ 8 | Dry | +1 | |
16.4 WIND: The following table is used in lieu of the B25.63 Wind Force Table to determine the initial Wind Force of a Tropical DYO scenario. Q&A
| TROPICAL WIND FORCE TABLEa | ||
| Final dr | Wind Force | Result |
| ≤ 3 | Mild Breeze | Wind Direction DRM and Dispersed SMOKE |
| 4 | Heavy Wind | Automatic Spread Downwind; None Upwind |
| ≥ 5 | No Wind | No Wind Direction DRM |
| drm | |
| -1 | If the scenario uses any OCEAN overlay(s) treated as Ocean |
| a: | NA if Heavy Surf is in effect (13.448). |
16.41 DIRECTION: Players designing DYO scenarios using any OCEAN overlay(s) treated as Ocean might wish to note that the wind (if any) generally tends to blow from offshore during the day and from inland at night.
