1. Alberta:

UNUSUALLY WET WEATHER ABATES

Fewer than 25 mm of precipitation fell on Alberta and adjacent provinces. Eight-week moisture surpluses were generally less than 100 mm [WET - Ending at 7 weeks].

2. Northwestern United States and Southwestern Canada:

STILL ABNORMALLY COOL

Temperatures were 2°C to 4°C below normal last week, with highs in the twenties (°C). Subfreezing lows were generally limited to higher elevations of the interior [COLD - Up to 5 weeks].

3. West-Central United States:

FAVORABLY DRY WEATHER PREVAILS

Little or no precipitation fell on northern California and southwestern Oregon during the past week. During the past 13 weeks, 150 to 600 mm of precipitation was reported, resulting in moisture excesses of 60 to 205 mm [WET - Ending at 12 weeks].

4. Central United States:

FAVORABLY DRY ACROSS NORTH AS STORM TRACK DRIFTS SOUTHWARD

The jet stream, a high-altitude steering current, directed storms across the southern United States, with 50 to 200 mm of rain soaking a swath from eastern Oklahoma and southern Kansas eastward to northeastern Georgia and eastern Tennessee. Between 200 and 500 mm of rain accumulated since March 23, resulting in short-term moisture excesses of 50 to 270 mm [WET - Up to 9 weeks].

5. Northeastern United States and Southeastern Canada:

UNSEASONABLY COOL WEATHER DOMINATES

Weekly departures of -2°C to -4°C prevailed across New England and the St. Lawrence River Valley. Although highs were generally in the twenties (°C), the mercury dropped below freezing at most locations [COLD - Up to 3 weeks].

6. Southern United States and Caribbean Basin:

WARM ANOMALY DEVELOPS

Temperatures averaged 2°C to 5°C above normal during the past week. Highs were generally in the thirties (°C), but exceeded 40°C in parts of Texas, Arizona, and Mexico [WARM - Up to 3 weeks].

7. Texas and Mexico:

STILL VERY DRY

Little or no rain was reported during the last week as unusually dry conditions persisted. Generally less than 100 mm of rain has accumulated during the last 8 weeks, yielding precipitation shortfalls of 50 to 160 mm [DRY - Up to 10 weeks].

8. Bolivia:

UNUSUALLY DRY CONDITIONS EVOLVE

Generally less than 10 mm of precipitation fell during the past week. During the last 28 days, fewer than 20 mm of rain was reported, with totals among the lowest 10% of the climatological distribution [DRY - Up to 6 weeks].

9. Chile and Western Argentina:

DRY ANOMALY DEVELOPS

Little or no rain fell on much of Chile and adjacent western Argentina. Although as much as 275 mm of precipitation accumulated during the last 8 weeks, short-term moisture deficits ranged from 50 to 225 mm [DRY - Up to 7 weeks].

10. East-Central South America:

MOISTURE SURPLUSES REMAIN

Moderate to heavy rains (25 to 200 mm) fell on west-central Uruguay and adjacent Argentina while totals of 10 to 50 mm were reported elsewhere. Eight-week precipitation totals ranged from 100 to 550 mm, yielding short-term moisture excesses of 50 to 360 mm [WET - Up to 10 weeks].

11. Ireland and Great Britain:

UNUSUALLY WET WEATHER REPORTED

Between 10 and 50 mm of rain fell on western Great Britain and eastern Ireland during the past week. During the past 4 weeks, the accumulations of 90 to 160 mm of rain were among the highest 10% of the climatological distribution [WET - Up to 5 weeks].

12. Europe:

PRECIPITATION LIMITED TO THE ALPS AND ADJACENT AREAS

Precipitation totaled 10 to 100 mm across the Alps and adjacent parts of central Europe, but the remainder of the Continent received little or none. Eight-week precipitation totals were generally less than 250 mm, with higher amounts restricted to the higher elevations of the Alps. Highly variable moisture deficits for the last 13 weeks ranged from 50 to 400 mm [DRY - Up to 16 weeks].

13. Southern Europe, Southwestern Asia, and Northern Africa:

STILL UNUSUALLY WARM

Temperatures averaged 2°C to 5°C above normal across most of the region, with larger departures (up to +8°C) in southwestern European Russia. Highs generally ranged from 25°C to 35°C while lows were generally above the freezing mark [WARM - Up to 7 weeks].

14. Western Sahel:

ABOVE-NORMAL TEMPERATURES PERSIST

Weekly temperature departures of +2°C to +4°C covered much of the region, with highs in the forties (°C) and lows in the twenties (°C) [WARM - Up to 3 weeks].

15. Interior Portions of Kenya and Tanzania:

MODERATE TO HEAVY RAINS CONTINUE

Between 50 and 200 mm of rain fell on the southwestern portion of Kenya while up to 100 mm were reported elsewhere. Since March 23, precipitation totaled 100 to 600 mm, allowing short-term moisture excesses to range from 50 to 305 mm [WET - Up to 7 weeks].

16. Sri Lanka:

HEAVY THUNDERSTORMS DRENCH SRI LANKA

Torrential rains (100 to 200 mm) soaked the western portions of Sri Lanka while lesser amounts (up to 100 mm) were reported elsewhere. Precipitation totals of 175 to 310 mm during the past 4 weeks were among the highest 10% of the climatological distribution [WET - Up to 5 weeks].

17. Central Asia:

COLD AIR DRIFTS EASTWARD AND MODERATES

Weekly departures of -2°C to -5°C covered much of the region, with the largest negative departures in northwestern China and western Mongolia. The mercury failed to reach 30°C at most locations while readings dropped below freezing in western China [COLD - Up to 10 weeks].

18. Eastern China:

HEAVY RAINS SHIFT SOUTHWARD

Heavy showers and thunderstorms dumped 50 to 200 mm of rain (with locally higher amounts) on much of China from northeastern Guangxi and eastern Guizhou northeastward to Shanghai while favorably dry weather (fewer than 50 mm of rain) prevailed further north. Eight-week precipitation totaled 100 to 600 mm, yielding short-term moisture surpluses of 50 to 200 mm [WET - Up to 8 weeks].

19. Southern China and Western Pacific:

TEMPERATURES MODERATE

Temperatures were generally within 3°C of normal, with highs in the thirties (°C) and lows in the twenties (°C) [WARM - Ending at 9 weeks].

20. Southwestern China and Northern Indochina:

UNUSUALLY DRY WEATHER PREVAILS

Fewer than 50 mm of rain fell on much of Yunnan in southwestern China and the northern portions of Vietnam and Laos. Four-week precipitation totals (less than 60 mm) were among the lowest 10% of the climatological distribution [DRY - Up to 5 weeks].

21. Western Australia:

WARM ANOMALY DEVELOPS

Temperatures averaged 2°C to 4°C above normal, with highs in the thirties (°C) north of 30°S and in the twenties (°C) elsewhere. Lows were generally below 20°C [WARM - Up to 3 weeks].