Daily weather brief – Friday, October 21, 2016

NWPAC outlook, 21 OCT

NORTH

Surges of cooler and drier air from the northwest continue to roll through the north region, bringing a definite feel of autumn into the region. The newest cold front is draped across Mongolia and northern China, and will usher in the coldest air of the season to arrive next week. And earlier cold front has exited the region to the east, but not before bringing significant snowfall to portions of Japan’s northernmost main island of Hokkaido. Most locations will see plenty of sunshine today, with very cool temperatures in the northernmost locales. Areas to the south will see warmer temperatures, with a few showers, with some heavier rain in spots, expected over central China, and tropical moisture from remnants of 24W SARIKA keeping things cloudy and moist over eastern China and the Korean peninsula.

CENTRAL

Typhoon 25W HAIMA is moving into the southeastern coast of China today, bringing all the hazards a tropical system presents. Hong Kong has issued a Tropical Cyclone Warning Signal T8, which effectively shuts the city down for the day. The good news is that Hong Kong is on the backside, or weak side, of the storm as it moves inland to the northeast, but heavy rain and gusty winds along with some flooding will be likely along the entire coast of southeastern China, with a landslide risk in the higher elevations. Some of HAIMA’s moisture will affect Taiwan and Okinawa as well, bringing a chance of showers and scattered thunderstorms this afternoon.

SOUTH

The weather has quieted down considerably across the south region, following the passages of typhoons 24W SARIKA and 25W HAIMA over the past 10 days. While the Philippines and southern China pick up the pieces, the weather will stabilize a bit, with the usual chances of afternoon showers and thunderstorms as the deep moisture gets a lift from the warm afternoon sun.

TROPICS

Following a very busy 10-day period of late, all we are left with now is typhoon 25W HAIMA, which is moving into southeastern China as I write this report.

TAAG, 21 OCT

Typhoon 25W HAIMA is moving into southeastern China, just to the northeast of Hong Kong, and is packing power equivalent to a category 1 system on the Saffir-Simpson scale. Hong Kong has issued T.C.W.S. (Tropical Cyclone Warning Signal) #8 for the city, effectively shutting down the town for the day. HAIMA is expected to move inland today, weaken, and eventually get caught up in the strong baroclinic zone to the north, where its remains will be jettisoned out to open ocean in the next two or three days.

25W full, 21 OCT

Elsewhere across the tropics, all is quiet, save for the usual daily dose of scattered showers and thunderstorms that are a product of the copious moisture teaming up with the very warm sunshine.

Have a fabulous Friday!

Courtesy: CIMSS, Tropical Tidbits, JMA, JTWC, Intellicast, WUnderground.com, N.R.L., RAMMB-NOAA

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