OCR Text |
Show Silver-iodide Units "Condition" Storm Potential The girst good chance to operate op-erate silver-iodide generators to increase moisture for southern Utah began on Thursday, July 9, according to the Water Resources Development Corporation. For better than a month this area has been without storms or moist air masses from which any benefits ben-efits could be derived by cloud-seeding cloud-seeding operations. On July 9 a strong flow of very moist air moved into the Southwestern South-western states from the Gulf of Mexico traveling northward to the Canadian border. Ordinarily this situation would only result in afternoon cloudiness and occasional oc-casional thundershowers but the southern portion of Utah was blessed with the occurance of several weak cold fronts that moved in from the west which "triggered" off the moisture In the gulf air mass. What actually actual-ly happened was that the cool air moving in from the Pacific under ran the moist air, forcing the latter aloft and the resultant clouds and thundershowers produced pro-duced good amounts of rain over all the area, with the greater amounts being received in the higher mountains. Operation of the silver iodide units in southern Utah was actually ac-tually commenced July 8 in order or-der to "condition" the storm so that greater benefits would be derived when the actual cold front moved through. Operations have continued each day with from five to 15 ground units being be-ing used each day. The determination determin-ation of which units to use and how long to operate them is determined de-termined by the Denver headquarters head-quarters of Water Resources Development De-velopment Corporation. |