Weekly Global Climate Highlights

1. South-Central Canada and Adjacent United States:

UNSEASONABLY COOL WEATHER RETURNS Temperatures were 2°C to 4°C below normal across the Prairie Provinces and western Ontario last week, with subfreezing lows reaching as far south as Banff, Alberta (51°N). Throughout the region, highs failed to reach 30°C [COLD - Up to 7 weeks].

2. Southwestern United States:

WARM ANOMALY ABATES Temperatures were generally within 2°C of normal during the past week, except for weekly departures of +2°C to +3°C in northern and central California and adjacent parts of western Nevada. Highs soared above 40°C in extreme southeastern California, western Arizona, and southern Nevada [WARM - Up to 6 weeks].

3. Central United States:

WESTERN SECTIONS REMAIN DRY WHILE SHOWERS DAMPEN EASTERN PORTIONS Moderate to heavy rains (25 to 100 mm) brought limited relief to eastern Nebraska and the eastern half of Kansas, but fewer than 25 mm of rain fell on the remainder of the region. Short-term (8-week) moisture deficits of up to 100 mm dominated Colorado, Nebraska, and Kansas, with precipitation shortfalls reaching 120 mm at Concordia, KS. Please see the U. S. Drought Assessment for additional information [DRY - Up to 7 weeks].

4. Southeastern United States:

SCATTERED HEAVY THUNDERSTORMS FAIL TO BRING RELIEF Locally heavy thundershowers (100 to 200 mm) drenched isolated parts of east-central and south-central Georgia while scattered moderate to heavy showers (25 to 100 mm) dampened parts of the region. Since the end of April, most locations received less than 200 mm of rain, resulting in precipitation shortfalls of 70 to 220 mm. Please see the U. S. Drought Assessment for additional information [DRY - Up to 11 weeks].

5. Northeastern United States and Adjacent Canada:

WET WEATHER PREVAILS Light to moderate rains (25 to 100 mm) fell on the lower Great Lakes and upper St. Lawrence Valley last week, with locally higher amounts approaching 150 mm. During the last 8 weeks, up to 500 mm of rain has fallen on the region, resulting in precipitation surpluses of 100 to 320 mm [WET - Up to 16 weeks].

6. Bolivia:

COLD ANOMALY DEVELOPS Weekly departures of -3°C to -7°C dominated western and central Bolivia. The mercury dropped below freezing in parts of western and southern Bolivia, and approached -15°C as far north as Charana (18°S) [COLD - Up to 3 weeks].

7. Central Chile and Adjacent Argentina:

HEAVY PRECIPITATION FALLS ON CHILE; FAVORABLY DRY CONDITIONS PREVAIL EAST OF THE ANDES Between 100 and 200 mm of precipitation inundated central Chile (around 35°S), particularly orographically-favored portions of the Andes. Weekly totals dropped sharply to the north (30°S) and south (40°S). Meanwhile, relatively dry weather (less than 25 mm) prevailed across Argentina and Uruguay. Short-term precipitation excesses of 100 to 800 mm still dominated the entire region [WET - Up to 15 weeks].

8. Europe and Northwestern Africa:

HEAT PERSISTS Hot weather continued over northern Morocco, the Iberian Peninsula, and from France eastward into Belarus, Ukraine, and the Black Sea. Temperatures averaged 2°C to 5°C above normal over the region with highs reaching 36°C as far north as Greifswald, Germany (54°N) and Zielona, Poland (52°N) [WARM - Up to 12 weeks].

9. Central Europe:

MORE DRY WEATHER Except for higher elevations in the Alps, little or no rain fell from southeastern France eastward into Romania and southwestern Ukraine. The dry conditions were exacerbated by the hot weather (see 8 above). Since the end of April, less than 100 mm has accumulated in the area, engendering moisture shortages of up to 270 mm [DRY - Up to 12 weeks].

10. Black Sea Region:

UNSEASONABLY COOL CONDITIONS REPORTED Temperatures were 2°C to 8°C below normal across portions of the Black Sea littoral and central Turkey last week, with the mercury dropping to 1°C at Ankara, Turkey (40°N) [COLD - 2 weeks].

11. East-Central Africa:

MORE DRY WEATHER Little or no precipitation was reported across southern Ethiopia and northern Kenya during the past week. Since the end of April, fewer than 70 mm of rain has fallen on the region, yielding moisture shortages of 80 to 115 mm [DRY - Up to 22 weeks].

12. Central and East-Central Asia:

WARM ANOMALY CONTINUES Temperatures again averaged well above normal (3°C to 10°C) across a large area from central Siberia southeastward to the Yellow Sea and the west coast of Japan. Temperatures in the low thirties were reported across much of south-central Siberia [WARM - Up to 3 weeks].

13. Northeastern China:

SCATTERED RAINS BRING SOME RELIEF Widely scattered thunderstorms brought locally heavy rain (up to 100 mm) and eased dryness over northeastern China from northern Manchuria southward to Hebei and Shandong. Less than 70 mm of rain, however, has fallen over much of the area since April 30, yielding moisture shortages of up to 100 mm [DRY - Up to 8 weeks].

14. East-Central and Southeastern China:

STORMS BRING HEAVY RAIN Rains of up to 200 mm and more inundated China from eastern Sichuan eastward to the East China Sea and southeastward to the South China Sea. According to press reports, the rain destroyed houses and triggered landslides in Fujian Province, killing a number of people. During the last 8 weeks, as much as 700 mm of rain have saturated the region, which yields moisture excesses of up to 350 mm [WET - Up to 7 weeks].

15. Southeastern Australia:

STILL UNUSUALLY DRY Little or no rain fell on coastal New South Wales and the eastern portions of Victoria and Tasmania while 10 to 50 mm of rain dampened the remainder of the region. Precipitation shortfalls during the last 8 weeks ranged from 50 to 100 mm, with higher moisture deficits (up to 220 mm) reported along the coast of New South Wales [DRY - Up to 12 weeks].