Recordings of weather reports, tropical cyclone warnings, and weather information for south China coastal waters regarding Peggy on Saturday July 12, 1986 (in Cantonese or English).
This new video includes GMS infrared images from Digital Typhoon. It replaces the previous version posted on May 21, 2009. Total views: 181, age: 25-34 7%, 35-44 93%, 100% male.
Previous comments:
leowongyl1237:
KY:
Do u think the main reason for hoist #8 for PEggy is
1) heavy rain
2) wide circualtion of Peggy
as HKO always ignore those storm that weaken/landfall even closer to HK
kykong: Peggy always reminds me about Hal, which also made landfall one year ago at about the same place near Shanwei to the east of Hong Kong while moving in a WNW/NW direction. I think that the reason HKO hoisted the No.8 for Peggy was that as Peggy made landfall east of HK while moving WNW, winds in HK would turn to the SW, and should strengthen because a SW wind should encounter little obstructions from the sea compared with a NW wind coming from the land. The area of circulation was wide also.
kykong: I remember that the winds during both Hal and Peggy were not very strong (it was stronger during Peggy). Hal had been moving WNW and seemed to be heading straight at HK. But at the last moment, it turned northward abruptly. HKO had been forecasting Hal to make a right turn and make landfall east of HK, and mentioned it during the No.3 advisories. But the expected turn did not happen until very late, when it got to 55nm to the ESE.
kykong: This is usually close enough for gale force wind to affect HK even for a T.S. HKO revised the expected landfall place from within 100nm in the 7:15pm advisory to 60nm in the 9:15pm No.3 advisory, and apparently kept it at 60nm to the east through the night even until the No.8 warning at 6:15am when Hal was 65nm to the ESE. HKO revised it closer to 40nm at the 7:15am when it got to 55nm to the ESE, then kept it vague for and after the 9:15am warning when Hal was making the hard right turn.
kykong: This is understandable given how abrupt the turn actually was. As a result, Hal moved slightly further away from HK after the turn and after landfall. But for Peggy, she was closest when it passed north of HK over land. So I think this is the reason winds over HK were stronger in Peggy than in Hal.
kykong: What I've learned from Hal and Peggy is that the NW winds are usually weak if a typhoon makes landfall to the east of HK. But after landfall, winds in HK will turn to SW and if the TC continues to move WNW, winds in HK should strengthen some more. But as that happens, the strongest winds closer to the center have already much weakened.
kykong: Under this scenario, HKO would hoist the No.8 only if the TC is close enough to cause the NW winds in HK to be generally strong before landfall; and if HKO expects the TC to pass north of HK after landfall, and believes that it will cause the winds to turn to the less obstructed SW direction and strengthen just enough to gale force. The TC should be at least typhoon strength to start with.
db065a17:
5am-TS
4pm-still TS
8pm-LPA
Did it really weaken so quickly from 4pm to 8pm?
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10:43
1986 颱風蓓姬 (Typhoon Peggy) 風暴消息 3/5by kykong255 views
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