Daily update- Friday, May 27, 2016

NWPAC outlook, 27 MAY

It will be another wild temperature ride across parts of the north region as the central region gets in on the tropical weather action. The south clears out just a bit as 90W takes over the moisture in the region and the tropics remain silent, but building. 

NORTH

Residents and visitors of Mongolia should keep their coats, and cold remedies, handy for one more wild temperature swing this weekend Highs will reach the low 20’s (low 70’s F) this afternoon, before plummeting 27C (49F) tonight as another shot of cold, Siberian air clips the area. This will be followed by a chilly high of 11C (52F) on Saturday, a full 16C (27F) colder than today’s high, with another rebound into the low 20’s (low 70’s F) on Sunday. The rest of the region will see a much more stable temperature scenario, as drier air behind a couple of frontal systems settles into the northeastern reaches of the region. Japan and eastern China will see a good chance for showers as a front sweeps through today. To the west and south, tropical moisture from the south is combining with energy associated with the méiyǔ front to help keep clouds and showers in the outlook as well.

CENTRAL

Tropical moisture in the form of TD 90W is moving into the region from the south, as the weak system slowly drifts to the north-northeast, in the general direction of Hong Kong. The system is nothing more than a rain-maker, with a few gusty squalls possible as it moves into the region. The system is already helping add moisture to the energy associated with the East Asian monsoon, or méiyǔ, so showers and scattered thunderstorms will be possible for much of the region. Okinawa will see another nice day as they continue to get a break from the action, and parts of southwestern China will see a drier scenario today as well.

SOUTH

90W takes over the moisture in the region, dragging it northward as it moves out of the region, leaving behind a warmer and drier set up for today. Let’s get to the main story, however:

TD 90W 

90W, 27 MAY

At 0630PST, the N.R.L. (Naval Research Laboratory) placed the center of tropical disturbance 90W INVEST near 19.6N, 113.3E, approximately 309km (192mi) south-southwest of Hong Kong, China.

90W INVEST was described as a minimal tropical depression by J.M.A. (Japan Meteorological Agency) yesterday, and a T.C.F.A. (Tropical Cyclone Formation Alert) was issued by JTWC (Joint Typhoon Warning Center) in the afternoon as well. Due to land interaction and the system’s proximity to the mainland, the T.C.F.A. is likely to be rescinded very soon. This system is not expected to develop into a significant tropical system, and is forecast to drift to the north-northeast and move inland over southeastern China.

Scattered pockets of residual moisture remain in some spots across the south region as the monsoonal shift continues. Most locations can expect a chance of showers or thunderstorms this afternoon as the warm daytime sun heats up the air. The Philippines will likely see less chance for rainfall as energy from 90W pulls out of the area, leaving a rather stable atmosphere behind.

 TROPICS 

The tropics have dished up the first system of the season, and it represented what the season has been so far…weak, and unremarkable. That trend looks to continue as the I.T.C.Z. (Inter-Tropical Convergence Zone) settles down just a bit more. Two weak easterly waves are drifting along with the westerly flow of the I.T.C.Z., with one in the western islands of Micronesia, and another pulling out of the Marshall Islands and into eastern Micronesia. Afternoon showers and thunderstorms will be prevalent across the region, the usual by-product of warm sunshine and a soupy atmosphere.

Have a fun Friday!

Courtesy: CIMSS, Tropical Tidbits, Intellicast, WUnderground.com

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