时间:2025-07-19 09:08:21 来源:网络整理编辑:時尚
UPDATE: Aug. 18, 2023, 11:28 a.m. EDT This story has been updated with new information about Hurrica
UPDATE: Aug. 18, 2023, 11:28 a.m. EDT This story has been updated with new information about Hurricane Hilary's track toward the U.S. and its expected impacts, particularly intense rainfall in certain regions.
Here's a map you've probably never seen before.
A rare storm will make landfall in California. During the entire 20th Century, just one tropical storm — a cyclone from the tropics with sustained winds of at least 39 mph — hit the Golden State in 1939. Now, as of August 18, the National Weather Service reports that Hilary will make landfall early Monday morning, perhaps somewhere along the U.S.-Mexico border. Hilary has strengthened into a hurricane over the warmer waters of the tropical Pacific, but its winds will significantly weaken to tropical storm levels as it approaches the U.S.
Crucially, the storm's behavior, track, and regional impacts will change in the coming days. But the big picture is clear: Parts of Southern California and the Southwest will experience heavy rainfall and flash fooding risk.
"People should prepare for heavy rainfall," Zack Taylor, a meteorologist with the National Weather Service, told Mashable. "Regardless of the strength of the system, there is potential to bring significant impacts to the Southwestern U.S."
SEE ALSO:Intense gov't footage shows what triggered glacial outburst in AlaskaIn other words, just because the storm's greatest risk isn't wind and it will no longer be a hurricane (technically meaning sustained winds over 74 mph), the system still carries bounties of moisture.
Storms around the U.S., and world, are steered around by large areas of high and low pressure in the atmosphere. In this case, a trough (low pressure) over the Western U.S. and ridge (high pressure) over the central U.S. will steer Hilary on a path northward through Baja California.
A note about the storm track prediction:The predicted track you see below is shown by a cone, because the storm's exact trajectory is based on evolving winds, ocean temperature, and beyond. The cone "represents the probable track of the center of a tropical cyclone," the National Hurricane Center explains.
Here's the predicted track as of 9 a.m. MDT on Aug. 18:
Tweet may have been deleted
Tweet may have been deleted
Intense rain and freshwater flooding will be the major impact in parts of Southern California, particularly flood-prone areas. "Heavy rain with the potential for flash flooding and debris flows remains the primary concern for So Cal Sun-Mon," San Diego's National Weather Service office wrote online.
The rains will peak Sunday and Monday in Southern California, Taylor said. But, importantly, rainfall estimates will be updated by the Weather Service over the coming days, he underscored.
Here is the rainfall prediction as of August 18. As of then, regions east of Los Angeles and San Diego will get the most rain, with some 10 inches at highest — though this can change.
Want more scienceand tech news delivered straight to your inbox? Sign up for Mashable's Light Speed newslettertoday.
Tweet may have been deleted
Tweet may have been deleted
Strong winds will be a factor, too, in some regions — but certainly not anything approaching hurricane winds. There's a "20-30% chance tropical storm-force winds, beginning as early as Sun evening," the National Weather Service said.
Fortunately, the Pacific waters off of Baja California are significantly cooler than the bathtub-like temperatures in the Gulf of Mexico and Caribbean — which act as "hurricane fuel" for intensifying tropical storms. Still, the impacts from Hilary can be serious, including not just rainfall and some high winds but dangerous coastal swells.
Stay tuned to your local National Weather Service Office.
"People should monitor the latest forecast as we hone in the latest details," Taylor said.
Climate change is impacting hurricanes. Some of these impacts are clear, particularly more serious rainfall and historic flooding, along with higher storm surges. Other impacts, like how the relentless warming oceans are affecting how strong these storms grow, are an intensive and ongoing area of research.
TopicsNature
Samsung Galaxy Note7 teardown reveals the magic behind the phone's iris scanner2025-07-19 08:58
朗尼克:希望曼聯球員更職業 不可能讓所有人滿意2025-07-19 08:56
6日賠率:尤文對陣那不勒斯不敗 米蘭羅馬握手言和2025-07-19 08:27
曝C羅對朗尼克非常不滿 若正式主帥不合心意將離隊2025-07-19 08:13
Despite IOC ban, Rio crowds get their political messages across2025-07-19 07:39
國足52人集訓名單 :鄭智孫繼海等任助教 歸化5將均在列2025-07-19 07:18
巴坎布不避諱為錢踢中超 稱得到巴薩關注受寵若驚2025-07-19 07:16
曝深足外援金特羅已決定離開球隊 重返老東家河床隊2025-07-19 07:02
Florida hurricane forecast remains uncertain, but trends in state's favor2025-07-19 06:54
足協公布2022年國際級裁判員名單:馬寧 、傅明在列2025-07-19 06:23
Fiji wins first2025-07-19 09:01
一盤散沙!C羅11月曾組織曼聯聚餐 有球員拒絕出席2025-07-19 08:49
紐卡斯爾官宣簽下特裏皮爾 轉會費1200萬英鎊2025-07-19 08:45
曝廣州隊球員將看股改結果定去留 有俱樂部已進行接洽2025-07-19 08:37
Cat gets stuck in the most awkward position ever2025-07-19 08:13
李金羽繼續出任武漢隊主教練 球員們普遍認可執教表現2025-07-19 08:07
活久見!第四官員拒絕正確佩戴口罩 被主裁紅牌罰下2025-07-19 08:02
阿瓦伊官方宣布穆裏奇加盟 將於未來幾天接受體檢2025-07-19 07:45
Old lady swatting at a cat ends up in Photoshop battle2025-07-19 07:38
西甲最朝氣蓬勃的球隊如何打造 瓦倫西亞告訴你答案2025-07-19 07:21