10/12: USDA Monthly World Weather Highlights

October 12, 2011 03:53 AM

As part of the monthly USDA S&D Report, USDA Joint Ag Weather Facility has issued the following weather highlights:

  • UNITED STATES: Mostly dry weather dominated the Plains, upper Midwest, and Northwest, promoting summer crop maturation and harvesting. Winter wheat planting also quickly advanced, except on the drought-stricken southern Plains, where many producers opted to postpone seeding operations while awaiting rain. In addition to the dry weather, parts of the upper Midwest—including North Dakota and Minnesota—experienced a growing season-ending freeze on September 15. Only a small percentage of the corn and soybeans in the freeze-affected area was fully mature when the freeze struck, possibly reducing yield potential. Meanwhile, wet weather prevailed along and east of a line from Louisiana to Indiana. Some of the heavy rain, especially early in the month, was due to the remnants of Tropical Storm Lee, interacting with a cold front. Lee made landfall along the Louisiana coast on September 4. Across the eastern Corn Belt, where September wetness hampered early-season harvest efforts, crops were already late in maturing due to spring planting delays. Farther east, back-to-back tropical deluges (from Hurricane Irene in late August and Lee in early September) led to record flooding in parts of the Mid-Atlantic States.

  • CANADA: In September, conditions were overall favorable for drydown and harvesting of Prairie spring grains and oilseeds. Potential damage from a mid-month freeze was likely limited to exceptionally late-planted spring crops. Mild weather aided development of late-planted corn and soybeans in Ontario, though wet conditions slowed early summer crop harvests as well as winter wheat planting.

  • SOUTH AMERICA: Beginning in late September, widespread, locally heavy rain improved conditions for vegetative winter grains in previously dry locations of central Argentina. The moisture was also timely for emerging corn and sunflowers. Seasonal showers intensified throughout Brazil’s central interior, improving planting prospects of soybeans and other summer row crops while providing needed moisture for flowering coffee.

  • EUROPE: In September, unseasonably dry weather over Spain and the Balkans accelerated summer crop harvesting but further reduced soil moisture for winter grain planting. In contrast, rain slowed cotton maturation and harvesting in Greece. Drier conditions in northern Europe facilitated winter crop sowing, although locally heavy showers in eastern Germany and western Poland caused fieldwork delays. Temperatures averaged near to above normal over much of the continent, with no season-ending freezes reported.

  • FSU-WESTERN: A drier-than-normal September facilitated rapid summer crop harvesting in Belarus and Ukraine. In contrast, locally heavy showers in Russia’s Southern and Volga Districts slowed summer crop harvesting and winter wheat planting, although the rain ensured adequate to abundant soil moisture for winter wheat and barley establishment. Prospects for maturing summer crops are vastly improved versus last year, when historic heat and drought slashed yields.

  • FSU-EASTERN: In September, drier-than-normal weather across Kazakhstan and Russia’s Siberia District favored spring grain maturation and harvesting. However, locally heavy showers in western Kazakhstan and the Urals District in Russia caused only minor spring grain harvesting delays. Unseasonable early month showers in southern growing areas slowed cotton maturation and harvesting, although drier conditions returned during the latter half of the month.

  • MIDDLE EAST AND TURKEY: In Turkey and Syria, late-month showers provided topsoil moisture for winter crop planting and establishment. Seasonably dry weather elsewhere favored fieldwork, including cotton harvesting and winter wheat planting.

  • SOUTH ASIA: After a prolonged monsoon season in the north, rainfall withdrew rapidly during the latter half of September. The advent of hot, dry weather across northern India and Pakistan benefited cotton and rice harvesting but necessitated increased irrigation for recently planted winter wheat. Furthermore, an early withdrawal of the monsoon from western and southern India increased irrigation requirements, where available, for reproductive cotton.

  • EASTERN ASIA: Wet weather during September in eastern China lowered yield potential for cotton, although overall prospects for cotton production remained very favorable. Persistent rainfall increased moisture reserves in the south, depleted from inconsistent rains through the summer. In northeastern China, a late-September freeze halted the growing season and aided the drydown of mature corn and soybeans, facilitating harvesting. Typhoon Roke cut a path across the length of Japan late in the month, producing widespread flooding in rice areas and halting harvest activities.

  • SOUTHEAST ASIA: Tropical activity increased in September, with multiple tropical cyclones impacting the region. In particular, Typhoons Nesat and Nalgae produced flooding in the northern Philippines and parts of northern Vietnam. As a result of the flooding in the Philippines, yield prospects for rice were reduced. Meanwhile, despite excessive wetness in Thailand and Vietnam, yield prospects for rice remained favorable. Elsewhere, unfavorably dry weather prevailed over oil palm in Indonesia. By early October, however, rainfall increased in Indonesia, boosting moisture supplies.

  • AUSTRALIA: In September, frequent showers in Western Australia maintained good to excellent wheat, barley, and canola prospects. In southeastern Australia, timely rains benefited reproductive to filling winter grains and oilseeds. Farther north, soaking rains in northern New South Wales and southern Queensland aided immature wheat and maintained adequate soil moisture and abundant irrigation supplies in advance of summer crop sowing.


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