Outbreaks of heavy rain will threaten to cause serious flooding across much of Southeast Asia and south China through at least the middle of next week.
Bolstered by a stream of water-laden tropical air from the eastern Indian Ocean, drenching thunderstorms will break out widely in a swath from southern Myanmar and northern Thailand eastward through northern Vietnam and a great deal of south China, even Taiwan.
Rainfall of 2 to 4 inches, enough to cause spotty flooding, will be common. However, localized falls of rain reaching 10 inches or more will happen, and it is these outbursts that could spark serious flooding.
May is the month during which rainfall normally rises steeply from its climatological winter minimum to its summer maximum across a wide swath of southeastern Asia to south China. Instances of flooding, even serious flooding, are not unusually beginning in May.
Early May flooding has already led to loss of life and displacement of many people in the south China provinces of Guangdong and Guangxi, it has been reported in the news media of China.
More clouds and cooler weather can be expected across the Bay Area through the holiday weekend and into the new week.
Cloudy skies and cooler weather will linger across the Los Angeles area through the holiday weekend and early in the new week.
It might feel more like late October rather than late May in the Northeast on Friday night as temperatures dip well below normal.
Memorial Day marks the unofficial start to summer and summer warmth will dominate the Northeast next week, but that does not mean an end to shots of cooler air.
Showers and thunderstorms threaten to interfere with Memorial Day festivities across roughly two-thirds of the United States.
Another round of downpours and thunderstorms will bring a renewed threat for flooding from Kansas to Texas over the Memorial Day Weekend.
Over $150,000 damage in Monroe and Pike counties from a thunderstorm downburst (originally thought to be tornadoes).
More rain in an already wet month. Monthly totals topped 11 inches at New York City, 9 inches at Bridgeport, CT and 8 inches at Baltimore (all three records for May).
International Falls, MN (1992)
Late season snow flurries.