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NWS CR Evaluation
Comments from Omaha WFO
WRF Model Comparison Eastern Nebraska/southwest Iowa 21Z 10 June 2005 Precipitation (3hr totals)
- NMM5: The NMM5 model predicted that at 21Z, a small band of <0.1” rain would stretch from southeastern Nebraska into extreme western IA. The actual precipitation amount ranged from a trace to 0.03” and occurred between Hastings and Tekamah. No rain fell in Iowa. (RANK 1)
- EM5: The EM5 model did not forecast any precipitation at all. It did not recognize the potential for light precipitation and predicted dry conditions. (RANK 2)
- ARW: The ARW model, on the other hand, over-estimated the potential for precipitation. It predicted spotty, light rain over eastern Nebraska and western Iowa, and a band of >0.5” precipitation over central IA. At 21Z, Iowa had not seen any rainfall at all. (RANK 3)