A Pacific storm is bringing areas of low elevation rain, moderate to heavy mountain snow, and high winds to the Northwest. Strong Santa Ana winds and very dry conditions are producing elevated to critical fire weather conditions in southern California. Isolated strong to severe thunderstorms are possible through early Wednesday morning across parts of northeast Texas into western Tennessee. Read More >
Instructions for the proper application of the reference time designator
1. The designator specified in this table should be used to the greatest extent possible to indicate the reference time of data contained within the text of the bulletin.
2. When the table does not contain a suitable designator for the reference time, an alphabetic designator which is not assigned in the table should be introduced and the WMO secretariat notified.
| Designator |
|
Designator |
|
| A | Analysis (00 hour) | L | 84 hours forecast |
| B | 6 hours forecast | M | 96 hours forecast |
| C | 12 hours forecast | N | 108 hours forecast |
| D | 18 hours forecasts | O | 120 hours forecast |
| E | 24 hours forecast | P | 132 hours forecast |
| F | 30 hours forecast | Q | 144 hours forecast |
| G | 36 hours forecast | R | 156 hours forecast |
| H | 42 hours forecast | S | 168 hours forecast |
| I | 48 hours forecast | T | 10 days forecast |
| J | 60 hours forecast | U | 15 days forecast |
| K | 72 hours forecast | V | 30 days forecast |
| W-Z | Not assigned |
