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segunda-feira, 10 de fevereiro de 2014

Early Ag Weather Watch - Feb 10

EARLY LOOK WEATHER REPORT

NATIONAL TEMPERATURE/RAINFALL EXTREMES:
HIGH SUN...84 AT DRYDEN TX
LOW  SUN...27 BELOW ZERO AT CRANE LAKE MN
24 HOUR RAINFALL ENDING AT 06:00 PM CT...SACRAMENTO 1.36 INCHES

US OUTLOOK AND MODEL DISCUSSION:

The US and European models are in fair to good agreement during the next 10
days, although there are differences as it concerns timing of features and
movement. The more significant differences are noted through the east coast
states and in the western Atlantic.
The longer range maps, days 6-10, continue to show the high latitude
blocking ridge well north and west of Alaska. There is a major upper level
trough covering the Gulf of Alaska, approaching the west coast of Canada during
this period. There is a moderate to strong trough centered north of Hudson Bay
in Canada during this time. The flow pattern across the US is a fast west to
east flow with embedded short wave troughs moving through this flow. There area
indications of a continued stormy weather pattern for the west coast states
from northern California northward, possibly a little south of here as well.
The fast flow through the middle of the US means mostly below normal
precipitation.. The precipitation may be somewhat heavier towards the east
coast. The heights in the southern US appear to be heading towards above
average. This means that after some fairly cold weather in the short range
period the region will turn warmer and drier later in the period. Temperatures
through the central and northern US may be more variable in nature but could
still trend towards below normal.

MAJOR WORLD HIGHLIGHTS/IMPACT:

SOUTH AMERICA: The strong ridge of high pressure remains in place over southern
Brazil and in the Atlantic east of Brazil today. There are signs on the models
that the ridge will weaken with time and eventually move off to the east. This
may allow for increasing shower activity and more seasonal temperatures in the
Brazil crop areas. The first to benefit from this change would be soybean areas
from RGDS and MGDS to Parana but not before 2-3 more very hot and mostly dry
days. The last to benefit from this would be the major sugarcane, coffee and
citrus areas of Sao Paulo and Minas Gerais Brazil. Argentina may also benefit
when troughs begin to move further north and east as it could trend drier.
However, not before 2-3 more days with the chance for heavy thunderstorms.

ARGENTINA: Soybeans and corn will benefit from adequate to surplus soil
moisture, except in areas where recent heavy storms has caused serious
flooding. A few more days with thunderstorm activity may be followed by a
welcome break in the action.

BRAZIL SOYBEANS: Extreme heat and dryness will continue to stress filling
soybeans for another 2-3 days. Beyond that showers and more seasonal
temperatures may develop which could help ease stress to soybeans. However,
continued rains will be needed during the weeks ahead to prevent further stress
to this crop.

BRAZIL COFFEE AND SUGARCANE AREAS: Temperatures are expected to average above
normal and rainfall below normal during the next 7 to 10 days. This likely
means continued stress to coffee trees and developing sugarcane during this
period. The longer range charts suggest a weakening of the current blocking
ridge over the area which should allow for increasing shower activity and less
heat but there is some uncertainty in this outlook.

CENTRAL/SOUTH PLAINS: Cold weather early this week will give way to warmer
weather late in the week. This change will mostly favor the dormant wheat crop,
except that it will melt the protective snow cover. Improving conditions for
livestock in the area, after the very cold and somewhat snowy start to the
week.

MIDWEST: Another surge of very cold weather is moving in early this week. The
pattern may moderate somewhat later in the week. The storm track is well south
and east during this period, likely remaining south and east of the Midwest
areas.

SOUTH AFRICA: The region looks to be drier and somewhat hotter during this
week. This will bear watching but as of today the maize crop is likely in
mostly good condition. It will take awhile before significant stress will occur
to the crop.

UKRAINE/WEST RUSSIA: Winter wheat areas will be warmer than normal during this
week. Not major concerns for the dormant wheat at this time but the warming
trend may melt some protective snow cover.

CHINA: Moderate to locally heavy snow and rain has occurred through central and
southern winter wheat areas of eastern China and through most winter rapeseed
areas during the past week. This will help to replenish soil moisture and it
will favor crops when they break dormancy in the spring. Snow to the north was
not as heavy but still fairly significant for this time of the year. Snow and
ice and to a lesser extent rain will delay transportation somewhat.

EXPANDED SUMMARIES/FORECASTS:

Midwest corn, soybean and winter wheat

Summary...

WEST: Light snow, mostly less than 0.10 inch melted, occurred in the region
during the weekend period. Temperatures averaged well below normal. The coldest
lows will likely occur this morning. Readings at or below minus 10 F can be
expected from central Iowa and northeast Nebraska northward.

EAST: Light snow and a few snow squalls, mostly 0.15 inch melted or less but
with some locally heavier, occurred during the weekend period. Temperatures
averaged below to well below normal.

Forecast....

WEST: Mostly dry today and early Tuesday. Chance for light snow or snow showers
through northern and eastern areas later Tuesday or Tuesday night. Drier again
Wednesday. Temperatures continue extremely cold today and early Tuesday, not as
cold Wednesday.
Episodes of light snow or snow showers through northern and eastern areas
Thursday through Saturday. Temperatures vary somewhat. Warmer temperatures are
especially likely in the west and south areas.

EAST: Mostly dry today and Tuesday. Dry or with only a little light snow during
Wednesday or Wednesday night. Temperatures average well below normal. The
coldest low temperatures will likely be for Tuesday morning when lows fall to
near zero F in southern Illinois and southwest Indiana and below zero elsewhere
in the region.

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