| Model: | GFS Ensemble | |
| Update: | 4 times per day, from 00:00, 06:00, 12:00 und 18:00 GMT | |
| Greenwich Mean Time: | 12:00 GMT = 13:00 BST | |
| Variables: | Temperature at 850 hPa and Precipitation | |
| Description: | The curves indicate both the general weather patterns, especially temperature and precipitation, and the general level of confidence of the forecast run. If the curves are plotted closely together, usually the initial 3-4 days, confidence is good. Confidence level is becoming poor where the curves begin to spread and forecast credibility starts gapping. | |
 |
||