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. 4. Research Support Weather forecasts will be made, meteorological observations will be taken, and rawinsonde and precipitation data will be collected in sup- port of the research. a. Weather forecasts. The Field Director will be responsible for issuing weather forecasts. The weather forecasts will be based largely on forecast information pl~ovided by the North American Weather Consultants operations centE!r in Salt Lake City. That forecast infor- mation depends largely on National Weather Service (NWS) service A, ser- vice C, and NAFAX data and prognoses received in Salt Lake City. The weather forecast issued by the Field Director will depend on certain supplemental information as well. This includes GOES satellite imagery received at the Field. Headquarters in Beaver over a special Ii nk with the nearest NOAA Satellite Field Service Station, upper air information obtained from the AdamsvillEi rawinsonde station, and local meteorologi- cal observations made at the Field Headquarters and at the NCAR C-band radar and Merchant Valley rE!mote sensing sites. Weather forecasts will be issued twice daily. At 0900 MST a fore- cast for general planning pllrposes will be issued. It will affect work schedules for the coming 12 hr period and for longer periods if there is high confidence in the fOrl!Cast. The forecast will be part of the general briefing to occur daily at 0900 MST at Field Headquarters. At 2100 MST an updated forecast will be issued. It will modify the morning forecast as necessary and support planning for the upcoming night hours and for the next day. If dear weather is anticipated for an extended period, some forecasts may be omitted but with notification by the Field Director of his intention to do so. "Update" forecasts may be issued at the discretion of the Field Director. . . . . . . . . . -22- .