Fig. 1: The midday 12Z GFS projects 117F on the Minnesota/North Dakota state line on Saturday July 24. 110-112F is common in North/South Dakota. Minneapolis surges to 114F!
Fig. 2-3: The midday 12Z GFS trended slightly warmer in the western Great Plains and cooler in Ontario during the 6-10-day period. A wetter change was made Wisconsin to Ohio in the 6-10-day period while Louisiana is wetter.
Fig. 4-5: The midday 12Z GFS is hotter in the Great Plains in the 11-15-day period while the Missouri Valley turns drier. Near Chicago, gully-washer thunderstorms bring a wetter forecast change.
|Dates||CDD Forecast||12-hr Change||24 hours ago||10-year NML||30-year NML|
Table 1: The 12Z GFS population weight CDD forecast compared to the 30-year/10-year normal and 12 and 24 hours ago. The forecast is slightly cooler since yesterday at this time through next week.