1. Southern Canada and Adjacent Northern United States:
UNSEASONABLY COOL WEATHER CONTINUES
Weekly departures of -2°C to -4°C prevailed across the south-central
and southeastern portions of Canada, and along the northern tier of the
United States, departures reaching -6°C in western Ontario and at scattered
locations in Manitoba, Saskatchewan, and Minnesota. Subfreezing lows were
widespread across Ontario and Quebec, and penetrated as far south as central
New Hampshire [COLD - Up to 6 weeks].
2. North-Central and Northeastern United States:
ABNORMALLY WET CONDITIONS PERSIST
Between 25 and 100 mm of rain soaked the northern tier of states from western
Iowa and southern Minnesota eastward to southern New England. Locally heavy
showers dropped 100 to 200 mm of rain on central Iowa and northern Illinois.
During the last 8 weeks, 200 to 450 mm of rain has fallen on the region,
yielding mositure surpluses of 50 to 150 mm, with locally higher excesses
(up to 300 mm) in central Wisconsin and east-central Minnesota [WET - Up
to 9 weeks].
3. Southwestern United States:
STILL VERY HOT; RECORD TEMPERATURES IN SAN FRANCISCO BAY AREA
Temperatures averaging 2°C to 5°C above normal dominated California,
Arizona, southwestern Utah, and southern Nevada again last week. Highs
reached 45°C at Las Vegas, NV (36°N) and exceeded 40°C as far
north as San Francisco (38°N). According to the media, the record high
temperatures at San Francisco claimed several lives before maritime air
returned to the Bay Area. Lows remained above 20°C in southern Nevada
and along the California/Arizona border [WARM - Up to 5 weeks].
4. Central United States:
ANOTHER VERY DRY WEEK
Scanty rainfall occurred across northeastern Colorado, southeastern Wyoming,
northern Kansas, and most of Nebraska again last week, except for up to
50 mm of rain in central Nebraska. Since late April, the region has received
less than 150 mm of rain, yielding precipitation shortfalls of 50 to 170
mm [DRY - Up to 6 weeks].
5. Southeastern United States:
MOISTURE DEFICITS REMAIN
An influx of Gulf moisture fueled scattered moderate thundershowers (25
to 100 mm) in the region, but large parts of Georgia and South Carolina
received little or no rain. Short-term (April 23 - June 17) moisture deficits
ranged from 50 to 200 mm. According to the media, water conservation measures
have been implemented throughout the Atlanta metropolitan area [DRY - Up
to 10 weeks].
6. Central South America:
MORE HEAVY PRECIPITATION
Moderate to heavy precipitation (50 to 200 mm) fell on most of central
Chile and western Argentina, with heavy snow falling on the Andes, resulting
in road closures, according to the media. Light to moderate rain (25 to
100 mm) dampened Uruguay and adjacent parts of Brazil and Argentina., but
little or none was reported in the remainder of north-central and northeastern
Argentina. Eight-week precipitation totals (moisture surpluses) included
200 to 500 mm (+100 to +330 mm) in Uruguay, 100 to 440 mm (+75 to +375
mm) in Argentina, and 300 to 750 mm (+50 to +290 mm) in central Chile [WET
- Up to 14 weeks].
7. Southern Europe and the Middle East:
HOT CONDITIONS PERSIST
Temperatures remained abnormally high from the northern Iberian Peninsula
eastward to the Middle East, and northeastward to Poland and Romania. Weekly
departures of +3°C to +7°C dominated much of the region, with the
mercury reaching 33°C as far north as Wroclaw, Poland (51°N) [WARM
- Up to 11 weeks].
8. Eastern Europe:
DRYNESS CONTINUES
Widely scattered showers (up to 100 mm) brought some relief to the region
from southern Finland southward to the Balkans. The dry conditions in the
southern portions were again exacerbated by the hot weather (see 7 above).
Since April 23, less than 100 mm of rain has accumulated in the area, engendering
shortfalls of up to 170 mm [DRY - Up to 11 weeks].
9. East-Central Africa:
DRYNESS REMAINS
Scattered light rain (less than 10 mm) did little to alleviate the dry
conditions in Kenya and southern Ethiopia as 8-week moisture deficits of
60 to 150 mm prevailed across the region [DRY - Up to 21 weeks].
10. Northeastern China:
MORE DRY WEATHER
Little or no rain fell on northeastern China from northern Manchuria southward
to Hebei and Shandong. Less than 60 mm of rain has fallen since April 23,
yielding moisture shortages of 85 mm [DRY - Up to 7 weeks].
11. Northern Asia:
LARGE WARM ANOMALY DEVELOPS
Temperatures averaged 3°C to 8°C above normal across a huge area
covering Mongolia, the Korean Peninsula, and much of central and eastern
Siberia and northeastern China. The mercury climbed to 35°C as
far north as Ulan Bator, Mongolia (48°N) [WARM - Up to 3 weeks].
12. Southeastern Asia:
MORE RAIN
Rains of over 200 mm continue to saturate southern Thailand, Cambodia,
and southern Vietnam. During the last 8 weeks, as much as 1370 mm of precipitation
has inundated the region, allowing moisture excesses of up to 460 mm to
accumulate [WET - Up to 17 weeks].
13. Australia:
SUBNORMAL TEMPERATURES PREVAIL ACROSS AUSTRALIA
Abnormally cool air, with temperatures averaging 1°C to 3°C below
normal, remained entrenched across northern and central Australia. Highs
above 30°C were restricted to a few locations along the northern coast
of Western Australia and Northern Territory. Subfreezing lows dominated
Tasmania, Victoria, and New South Wales [COLD - Up to 9 weeks].
14. Southwestern Australia:
SHORT-TERM MOISTURE DEFICITS REMAIN
Between 50 and 100 mm of rain fell on the southwestern coast of Western
Australia, but weekly totals diminished rapidly inland. During the last
8 weeks, Perth received only 124 mm of rain, a shortfall of almost 130
mm, while moisture deficits of 50 to 100 mm prevailed across most of the
region [DRY - Up to 7 weeks].
15. Southeastern Australia:
LITTLE OR NO RAIN REPORTED
Except for isolated showers (up to 100 mm) along the coasts of western
Tasmania and central New South Wales, fewer than 10 mm of rain fell on
the region. Short-term moisture deficits of 100 to 220 mm persisted along
the coast of New South Wales while moisture shortages of 50 to 100 prevailed
elsewhere [DRY - Up to 11 weeks].