La i-squall bar Laqhuma kakhulu futhi lashaya inhlonhlo ngo-December 2021. Kwakuyi-squall enamandla eyadala umonakalo omkhulu engxenyeni yokugcina yebhuloho likaDisemba. Uma kubhekwa ukungabaza kokuthi kungani lesi siphepho senzeka nokuthi kungani besishube kangaka, sizofuna izimpendulo.
Kulesi sihloko sizokutshela ukuthi kungani kwenzeka isiphepho saseBarra, yiziphi izici zaso kanye nesizathu sokuthi kungani sasishube kangaka.
Ibha ye-Squall
Isiphepho esiqhumayo i-Barra, esabangela ukuguguleka kweqhwa, sabangela umonakalo wangempela kwezinye izingxenye zenhlonhlo. Eqinisweni, i-DGT kwadingeka icele abashayeli ukuthi basheshe bagoduke ngoba kwakungenzeka ukuthi kuzoba neziqhwaga enyakatho yezwe. INational Meteorological Service (AEMET) ixwayise ngezimvula ezinamandla, umoya onamandla, amakhaza kanye neqhwa elinamandla enyakatho, kanye Iqhwa bekulindeleke ukuthi lehle lifinyelele ku-500 m ngesikhathi sokugcina sempelasonto ende kaDisemba.
Ngokusho komkhulumeli we-AEMET, uRubén del Campo, indawo ebandayo yaqala ukuhamba ngaphesheya kwenhlonhlo isuka enyakatho-ntshonalanga iya eningizimu-mpumalanga, ehambisana nesiphepho esijulile esibizwa ngokuthi i-Barra, esasibhekene nenqubo yokuqhuma kwe-cyclonic nesikhungo sayo.
ESpain, nokho, imithelela yayingeyona ingozi kangako, ngoba yayibangela ukudlula kwemingcele futhi yakha iziphepho ezinamandla zasolwandle e-Bay of Biscay, namagagasi afinyelela ukuphakama okungamamitha ayisi-6 kuye kwayisi-8.
Isiphepho sase-Barra saba nezimvula eziningi nezivamile eGalicia, i-Bay of Biscay kanye ne-Pyrenees, ezodlulela ohlelweni lwe-Iberian ne-Central kanye nezinye izindawo zaseNyakatho-ntshonalanga, kuyilapho eningizimu isibhakabhaka esiguqubele kancane sanqoba okwesithathu kanye iMedithera. Isembozo seqhwa sasiphezulu ekuqaleni, sase sehla saba ngamamitha angaba ngu-1.000 kuya kwangu-1.200 usuku lonke, futhi yaze yehla yaba ngamamitha angaba ngu-700 ezintabeni zaseCantabrian emahoreni ambalwa adlule.
Izici ze-squall yaseBarra
Ngokusho kukaDel Campo, okunye okumele kubhekwe wumoya ovunguza ngamandla ogwini nasezintabeni, ikakhulukazi engxenyeni esenyakatho. Imimoya ebandayo eqhamuka enyakatho-ntshonalanga, eyabangela ukwehla okukhulu kwamazinga okushisa, ikakhulukazi enyakatho ngokwedlulele, okwaqhubeka nokuna kakhulu ngenxa yayo, kodwa kwakukhona nenani elikhulu lamaPyrenees, iziNtaba zaseCantabrian kanye nokukhithika kweqhwa enkabeni naseduze neNhlonhlo Yase-Iberia.
Ngalo mqondo, lezi zinhlelo zezintaba zazingathola iqhwa elingaphezu kwamasentimitha ayi-10 kuya kwangu-15 ngamahora angu-24 kuphela, futhi iqhwa nalo laliphansi, cishe amamitha angama-500 kuye kwangama-700 enyakatho ekude namamitha angama-600 kuye kwangama-800 kuyo yonke inyakatho nasenyakatho.. Izingxenye ezimaphakathi zenhlonhlo nazo zazineqhwa, nakuba lalibuthakathaka, ezindaweni ezingazodwa zethafa nasemaxhaphozini ezindaweni ezimaphakathi.
Ngenxa yalesi sizathu, u-del Campo ucele zonke izakhamuzi ezishiya ibhuloho ukuba "ziqaphe kakhulu" ngenxa yokunyakaza phakathi kwengxenye esenyakatho nendawo ephakathi.
NgoLwesithathu noLwesine lwesiphepho
Uma kuqhathaniswa noLwesithathu, izimvula zazincane kuzo zonke ezinye izinkangala ezimbili nasezintabeni ezimaphakathi nenhlonhlo. Kwakukhona nezihlambi eziqhingini zaseBalearic. Ngalolu suku kwakudingeka sinake umoya futhi, ngezikhathi ezithile kunemimoya enamandla engaphezu kuka-80 km / h oLwandle lwaseCantabrian, inhlonhlo esempumalanga kanye neziQhingi zaseBalearic. Iziphepho olwandle zaqhubeka nendima ebalulekile, namagagasi afinyelela ku-8 wamamitha e-Bay of Biscay namamitha angu-4 eMedithera.
I-Galicia, imiphakathi yaseCantabrian kanye nePyrenees izoqhubeka nokuthola imvula enkulu ngoLwesine nangoLwesihlanu, kodwa izinga lokushisa elifudumele lizobona ama-snowpacks anda kakhulu, ngokuvamile adlula amamitha angu-1.500. Ngakho-ke, kwakukhona ukuncibilika kweqhwa ngalezo zinsuku, ukwanda okukhulu kokugeleza kwemifula kulezi zindawo, futhi inhlabathi yalezi zindawo nayo yayicwile ngenxa yemvula enamandla neqhwa cishe amasonto amabili.
Eqinisweni, emadolobheni ase-Asturias, eCantabria, eBasque Country nasenyakatho yeNavarra, ngaphezu kuka-10 l/m² aqoqwe ezinsukwini eziyi-300 ezedlule, eqokomisa indawo yokulondoloza i-Urkiola e-Vizcaya, eqoqa u-10 L/m378 ngosuku. La manani emvula asuka eNyakatho Ekude ngokuvamile angaphezu kokuphindwe kathathu kokujwayelekile kulesi sikhathi esiyizinsuku eziyi-10 ezedlule.
Izimvula zangoLwesine nangoLwesihlanu zabhebhetheka kakhudlwana enyakatho nasenkabeni nakwezinye izingxenye zesistimu yePenibético, kuyilapho eMedithera kwakukhona izihlambi ezilula eziqhingini zaseBalearic. NgoLwesine amazinga okushisa enyuka kulezi zindawo, nezimo ezipholile kule sizini, ezinothwathwa omncane namazinga okushisa amazinga okushisa emini angaphezu kuka-20ºC ogwini lweMedithera eduze nomfula i-Guadalquivir.
Kungani kwavela isiphepho saseBarra?
Isiphepho sase-Barra sakhiwa ngenxa yokujula kwenqubo yokukhiqiza iziphepho eziqhumayo. Ikakhulukazi, izivunguvungu ezifana ne-Barra zishuba ngokushesha uma kukhona ukusebenzisana okusebenzayo phakathi kwalezi zandulela ezimbili:
- Izandulela ze-oda eliphezulu ezisebenza kakhulu akhiwe amajethi e-polar groove achazwe kahle.
- Ukucindezeleka kwendawo noma isandulela sengcindezi ephansi.
Ngenxa yalesi simo, okwenzekayo ukuthi isiphepho saseBarra sabhekana nakho "ukuqina okumangalisayo", ngesivinini esisondele ku-50 hPa emahoreni angama-24. Lokhu kwaziwa ngokuthi "ibhomu lesimo sezulu," umphumela wokucindezeleka okujulile noma isiphepho ngesikhathi esifushane kakhulu.
Ngenxa yokushintsha kwesimo sezulu, sibona iphethini yokwandisa kokubili imvamisa namandla eziphepho ezinamandla kakhulu. Ngamanye amazwi, phakathi nenkathi yasekwindla, okuyilapho ngokuvamile kuba nokungaqini kahle komkhathi, lezi ziphepho zivame ukuba khona. Izindimbane zomoya zihamba nokushintshwa kwezingcindezi ezikhuphukayo futhi zehle kakhulu ngenxa yokushintsha kwezinga lokushisa elimaphakathi lomhlaba.
Ngokushintsha ngokuphelele sonke isimo sokushisa kwesilinganiso somhlaba wonke ngenxa yokukhiqizwa kwamagesi abamba ukushisa ku ukweqisa kubangela izinguquko emaphethini okwakheka kweziphepho.
Ngithemba ukuthi ngalolu lwazi ungafunda kabanzi mayelana nesiphepho saseBarra nezici zaso.