| Local forecast model, present status and preliminary verification - :12325 | National Weather Service (NWS)
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Local forecast model, present status and preliminary verification
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    "Work on the Local Forecast Model was begun at Suitland in late 1969 as a joint development venture by USAF Air Weather Service and National Weather Service personnel. The prospect of providing early guidance to forecasters from a limited-area, fine-mesh numerical forecasting model has been attractive to both services. The proposal would be to have the model operate at, say, two hours after the synoptic hour at which time sufficient data from the limited area would have been collected and reasonable initial values could be readied for the model. Boundary values would be provided by a previously run hemispheric, large scale model. Additional benefits could be expected to derive from the better resolution of the LFM. The truncation error control in space should, perhaps, result in more accurate phase speeds and positioning of the smaller scale synoptic features. Analysis and balancing on a higher resolution grid may capture detail that would be lost in the operational (PEP) model. In particular, better initial depiction of the moisture parameters could conceivably result in better precipitation and sensible weather forecasting guidance"--Introduction.

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