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Ramon pummels northern Luzon; another storm, Sarah, looms @ 2019-11-20T16: 返回 熱門新聞
關鍵詞:tropical storm into tropical
概念:
MANILA, PHILIPPINES – RAMON (KALMAEGI) BECAME DOWNGRADED FROM A TROPICAL STORM TO A TROPICAL DEPRESSION LATE WEDNESDAY MORNING, NOVEMBER 20, WHILE SARAH INTENSIFIED FROM A TROPICAL DEPRESSION INTO A TROPICAL STORM.
NOVEMBER CYCLONES AREN』T AS UNUSUAL AS ONE MAY THINK. IN FACT, SINCE 2000, MORE THAN HALF OF ALL NOVEMBERS HAVE FEATURED AT LEAST ONE TROPICAL CYCLONE IN THE ATLANTIC. SOME HAVE HAD MULTIPLE. ONLY EIGHT OUT OF THE PAST 20 YEARS HAVE GONE WITHOUT A TROPICAL CYCLONE IN NOVEMBER. (ONE OF THE YEARS — 2003 — SKIPPED THROUGH NOVEMBER WITHOUT A TROPICAL STORM BUT ENDED UP WITH A TROPICAL STORM IN DECEMBER. ODETTE FORMED ON DEC. 4 AND MADE A DEADLY LANDFALL IN THE DOMINICAN REPUBLIC ON DEC. 6.)
CONDITIONS IN THE WESTERN ATLANTIC OCEAN ARE FAR FROM THE TROPICAL SOUPINESS THAT WOULD TYPICALLY FOSTER A NAMED STORM, BUT THE ENVIRONMENT WAS FAVORABLE ENOUGH FOR A TROPICAL DISTURBANCE TO GROW ORGANIZED. WATER TEMPERATURES BENEATH SEBASTIEN ARE AROUND 80°F, WHICH IS SUITABLE TO SUSTAIN THE THUNDERSTORM ACTIVITY NEEDED TO FUEL THE DEVELOPMENT OF A TROPICAL STORM. THE TROPICAL STORM IS LOPSIDED AS A RESULT OF WESTERLY WIND SHEAR BLOWING THUNDERSTORMS AWAY FROM THE CENTER OF CIRCULATION. A BRIEF WINDOW OF FAVORABLE WINDS ON WEDNESDAY COULD ALLOW SEBASTIEN TO STRENGTHEN A BIT BEFORE THE COLD FRONT HAS A CHANCE TO CATCH UP.
AT THE MOMENT, IT HAS MAXIMUM WINDS OF 55 KM/H AND GUSTINESS OF UP TO 70 KM/H. IT COULD INTENSIFY INTO A TROPICAL STORM WITHIN 24 HOURS, AND POSSIBLY INTO A SEVERE TROPICAL STORM AFTERWARDS.
ON NOV. 14, THE MODIS OR MODERATE RESOLUTION IMAGING SPECTRORADIOMETER INSTRUMENT THAT FLIES ABOARD NASA"S TERRA SATELLITE PROVIDED A VISIBLE IMAGE OF THEN TROPICAL DEPRESSION 20 (TD20) IN THE EASTERN PACIFIC. THE IMAGE SHOWED THAT THE STORM WAS BEING AFFECTED BY OUTSIDE WINDS, PUSHING MUCH OF THE CLOUDS AND SHOWERS TO THE EAST OF THE CENTER. DESPITE THAT WIND SHEAR, TD20 CONTINUED ORGANIZING AND BECAME TROPICAL STORM RAYMOND ON NOV. 15.
(CNN)A STORM SYSTEM STRENGTHENED INTO TROPICAL STORM OLGA ON FRIDAY AFTERNOON, WITH FORECASTERS SAYING IT WILL BRING 2-4 INCHES OF RAIN TO THE CENTRAL GULF COAST AND INTO THE MISSISSIPPI VALLEY THROUGH SATURDAY MORNING.
SEVERAL TROPICAL STORMS AND HURRICANES PROVIDE MOISTURE FOR MEXICO AND THE SOUTHWESTERN U.S., BUT THAT USUALLY OCCURS DURING THE MONSOON. THIS BURST OF MOISTURE WILL BE LATER THAN USUAL COMING FROM THE TROPICS, BUT AN UPTICK IN RAIN CHANCES ACROSS THE SOUTHWEST THIS TIME OF YEAR IS RIGHT ON TIME AS THE RAINY SEASON BEGINS.
THIS STORM IS TAPPING INTO SOME REMNANT TROPICAL MOISTURE FROM WHAT WAS ONCE TROPICAL STORM RAYMOND, SO WATCH OUT FOR SHOWERS AND THUNDERSTORMS WITH THIS ONE.
AT 10 A.M. EDT (1500 UTC) ON NOV. 12 (1 A.M. CHST, NOV. 13) THE NATIONAL WEATHER SERVICE IN TIYAN, GUAM SAID THE CENTER OF TROPICAL STORM FENGSHEN WAS LOCATED NEAR LATITUDE 16.3 DEGREES NORTH AND LONGITUDE 158.6 DEGREES EAST. FENGSHEN IS MOVING WEST-NORTHWEST AT 16 MPH AND IS EXPECTED TO MAINTAIN THIS GENERAL COURSE AND SPEED THROUGH THURSDAY, THEN TURN SLIGHTLY TO THE NORTHWEST ON FRIDAY THE 15TH WHERE IT IS FORECAST TO PASS JUST NORTH OF AGRIHAN. MAXIMUM SUSTAINED WINDS HAVE INCREASED TO 40 MPH AND FENGSHEN IS FORECAST TO GRADUALLY INTENSIFY THROUGH FRIDAY. TROPICAL STORM FORCE WINDS EXTEND OUTWARD FROM THE CENTER UP TO 15 MILES.
AN AREA OF DISTURBED WEATHER THAT HAS BEEN BREWING OVER THE EASTERN PACIFIC OCEAN SOUTHWEST OF MEXICO BECAME TROPICAL DEPRESSION TWENTY LATE THURSDAY AND THEN WAS UPGRADED TO TROPICAL STORM RAYMOND DURING FRIDAY MORNING. SINCE THEN, RAYMOND HAS LOST IT"S WIND INTENSITY AND HAS BEEN DOWNGRADED TO A POST-TROPICAL CYCLONE.
HALONG』S PATH TO METASTASIZING INTO A MONSTROSITY STEMMED FROM SEEMINGLY INNOCUOUS ORIGINS SATURDAY, AS AN AREA OF LOW PRESSURE BLOSSOMED INTO A TROPICAL DEPRESSION SEVERAL HUNDRED MILES EAST OF THE NORTHERN MARIANA ISLANDS. HOURS LATER, IT BLOOMED INTO TROPICAL STORM HALONG.
BASED ON RAMON"S LATEST FORECAST TRACK, IT COULD MAKE LANDFALL IN CAGAYAN ON SUNDAY, NOVEMBER 17. IT IS EXPECTED TO WEAKEN INTO A TROPICAL DEPRESSION AFTER HITTING LAND, BUT MAY REINTENSIFY INTO A TROPICAL STORM AFTER IT LEAVES LANDMASS.
THE ONLY OTHER TROPICAL CYCLONES TO HAVE TRACKED THAT CLOSE TO SAGINAW SINCE THE MID-20TH CENTURY, ACCORDING TO NOAA, WERE TROPICAL DEPRESSIONS ARLENE AND DENNIS IN 2005, TROPICAL DEPRESSION CANDY IN 1968 AND TROPICAL STORM CONNIE IN AUGUST 1955.
THE GPM"S CORE SATELLITE PASSED OVER TROPICAL CYCLONE KYARR IN THE ARABIAN SEA, NORTHERN INDIAN OCEAN ON OCT. 31 AT 3:56 A.M. EDT (0756 UTC) AND FOUND THE HEAVIEST RAINFALL OCCURRING IN A VERY SMALL AREA AROUND THE CENTER OF CIRCULATION WHERE RAIN WAS FALLING AT 1.6 INCHES (40 MM) PER HOUR. MOST OF THE RAIN FALLING THROUGHOUT THE REST OF THE SYSTEM WAS OCCURRING AT A RATE OF OVER 25 MM (ABOUT 1 INCH) PER HOUR FORECASTERS INCORPORATE THE RAINFALL DATA INTO THEIR FORECASTS.
AN ADDITIONAL TROPICAL CYCLONE IS LIMPING ALONG IN THE ARABIAN SEA. CYCLONE MAHA, WHICH DEVELOPED NOV. 1, PEAKED AS A CATEGORY 3-EQUIVALENT 「EXTREMELY SEVERE CYCLONIC STORM EARLIER THIS WEEK. (WHAT IS DEEMED A 「HURRICANE」 IN THE ATLANTIC OR EAST PACIFIC IS CALLED A 「TYPHOON」 IN THE WEST PACIFIC, AND A 「CYCLONIC STORM」 IN THE INDIAN OCEAN. AUSTRALIA ALSO REFERS TO ITS STORMS AS 「CYCLONES.」) MAHA CAME ON THE HEELS OF CATEGORY 4-EQUIVALENT KYARR, WHICH PACKED 140 MPH WINDS LAST WEEK AS THE STRONGEST ARABIAN SEA STORM IN 12 YEARS.
AN EXTREMELY UNUSUAL TROPICAL CYCLONE OVER THE MEDITERRANEAN SEA IS HEADING FOR SOUTHERN ISRAEL AND EGYPT FROM CYPRUS. THE CYCLONE IS PREDICTED TO ARRIVE ON SATURDAY, BRINGING TROPICAL STORM-FORCE WINDS AND HEAVY RAINFALL. LOCAL SHOWERS AND THUNDERSTORMS ARE EXPECTED TO BEGIN FRIDAY AFTERNOON AND EVENING.

 

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