New network client carries Beijing in on August 21 report (Yang Yu is strange) occupy the observatory central 20 days 18 when released rainstorm blue early-warning, in " Wenbiya " with cold air collective influence falls, today, many ground still will have northeast to arrive greatly rainstorm. In addition, in northwest, ministry of Gansu Province middle east, Ningxia, Inner Mongolia western slant south ministry and other places also has northwest of area, Shaanxi to arrive greatly rainstorm.
Suffer " Wenbiya " influence, dalian assaults waterlogging by rainstorm serious. Piao Feng is photographed
"Wen Biya " send northeast more violent storm
Suffer " Wenbiya " the collective influence with cold air, 20 days day, situation of northeast area rain is not decreased.
Among them, distant east occurrence rainstorm of and other places of sea of peninsula, Shandong power, big rainstorm of He Dandong of hill of mouth of Liaoning Dalian, battalion, saddle, inn of Dalian Pu Lan and tile-roofed house inn are especially big rainstorm (250 ～ 288 millimeter) , hours of afore-mentioned areas are the largest rainfall has 50 ～ 90 millimeter; Distant east peninsula of peninsula south, Shandong appears 8 class of 7 ～ flatus, afore-mentioned regions are coastal and around islands flatus amounts to 10 ～ 12 class.
"Wen Biya " on strong north later, might still is not decreased.
According to the forecast that central observatory issues, 20 days 20 when to 21 days 20 when, ministry of southeast of Liaoning the eastpart part, Jilin the eastpart part, Heilongjiang and northwest ministry and other places still have arrive greatly rainstorm, bureau ground can appear even the strong convection weather such as thunderstorm gale. Arrive 20 days nightly, yellow Sea north and mid maritime space will have 8 class strong wind, among them the wind-force of maritime space of part of Yellow Sea north can amount to 9 class, flatus 11 class of 10 ～ .
On August 20, suffer this year the 18th typhoon " Wenbiya " influence, general of city of Liaoning province Dalian falls to arrive greatly rainstorm, bring about the many place inside city to appear serious seeper. Piao Feng is photographed
"Wen Biya " why to change cyclone of body temperate zone?
This year the 18th typhoon " Wenbiya " after be being landed 17 days all the way on north, and at 18 days abate afternoon for tropical depression, after this transforms again for temperate zone cyclone, but the harships weather that its bring about still is affected intense.
Does He Weiwen take cyclone? Central observatory is presiding Sun Jun explains the member that forecast, temperate zone cyclone is system of a weather, common Yu Zhonggao is latitudinal, its wind-force can amount to strong temperate zone cyclone typhonic level.
So, be what reason was brought about " Wenbiya " change personally?
Sun Jun analyses: "Wen Biya " it is temperate zone cyclone by intertropical cyclone denaturation, it is a typhoon on one hand " Wenbiya " go up into north on the west all the way, with tropics from Shandong north low-pressure form enters Bohai Sea bay, low pressure is circumfluent still keep more complete; It is on the other hand " Wenbiya " low pressure and northward cold air are united in wedlock, intensity gets strengthening, wind-force achieved 10 ～ 11 class, be equivalent to level of strong tropical storm.
Sun Jun expresses, the harships influence that temperate zone cyclone brings will end at tending 21 days night.
Data chart. Yang wave is photographed
More than and northeast, northwest also encounters rainstorm more
Be in besides northeast area " Wenbiya " the rainwater below the influence again and again, northwest area suffers headroom chamfer and effect of low layer shear, also will suffer strong rainfall weather.
According to the information that central observatory releases, predict 20 days 20 when to 21 days 20 when, ministry of Gansu Province middle east, Ningxia, Inner Mongolia western slant south ministry and other places has northwest of area, Shaanxi to arrive greatly rainstorm.
Among them, the local district of and other places of ministry of northwest of mid, Shaanxi has Ningxia big rainstorm (100 ～ 180 millimeter) . Afore-mentioned partial area companion have short when strong precipitation (hour rainfall 20 ～ 40 millimeter, can amount to) of 50 millimeter above most, bureau ground has the strong convection weather such as thunderstorm gale.
Frequency of northeast, northwest encounters strong rainfall, does the reason where?
In the light of northwest the area will receive the situation of strong rainfall, sun Jun analysis says, because northwest area suffers headroom chamfer and effect of low layer shear, northwest area on the west cold air of side, north side and the wet warm air current to are handed in collect, form northwest vortex. Because cold central heating sheds both intensity all stronger, it is better that lunt carries a condition, will fashion strong rainfall process in ministry of northwest area middle east so.
As to two ground the reason of general rainfall, sun Jun looks, basically be to suffer subtropic high-pressured influence.
He is analysed, this year before August 5, subtropic high-pressured position is unusual slant north slants on the west, controlling and other places of area of the south in Chinese northeast area, China north, its the warm wet air current that side carries ceaselessly on the west and boreal side cold air are handed in collect, form a rain belt, the rainfall that is afore-mentioned areas offerred good condition. Later, as subtropic of high pressure south remove, rain belt position also subsequently south move, south of area of northwest area the eastpart part, China north, northeast area appeared for many times process sex rainfall. (Be over)
