Tropical Storm Danas, known in the Philippines as Tropical Storm Falcon, was a tropical cyclone that caused minimal damages throughout its path originating as a low-pressure area near the

Mariana Islands The Mariana Islands (; also the Marianas; in Chamorro: ''Manislan Mariånas'') are a crescent-shaped archipelago comprising the summits of fifteen longitudinally oriented, mostly dormant volcanic mountains in the northwestern Pacific Ocean, betw ...

. It is the fifth named tropical cyclone and the sixth named storm by the

PAGASA Pagasa may refer to: * ''Pagasa'' (genus), an insect genus in the family Nabidae *PAGASA, an acronym for the Philippine Atmospheric, Geophysical and Astronomical Services Administration *"May Pagasa", a pen-name of José Rizal *Pagasa, alternate s ...

of the

2019 Pacific typhoon season The 2019 Pacific typhoon season was the costliest Pacific typhoon season on record, just ahead of the previous year. The season featured fairly above-average tropical cyclone activity for the second consecutive year, producing 29 named storms, ...

Meteorological history

On July 11, a low-pressure zone formed near the

, and the United States Naval Research Laboratory began tracking the system. On the morning of July 14, the Japan Meteorological Agency (JMA) upgraded it to a tropical depression. At this point the system moved westward. At 8 pm, the Joint Typhoon Warning Center gave the system a low chance for tropical cyclogenesis. On the morning of July 15, the JMA issued a gale warning, and the Central Weather Bureau (CWB) of Taiwan upgraded it to a tropical depression. On the same day, the Hong Kong Observatory upgraded the storm to a tropical depression. At 6:30 am on July 16, the Joint Typhoon Warning Center upgraded the rating to "High" and issued a tropical cyclone warning. The Joint Typhoon Warning Center raised the system to a tropical depression at 2:40 pm, giving the number 06W. At 3 pm on the same day, the Japan Meteorological Agency upgraded it to a tropical storm, naming it ''Danas'', followed by the China Meteorological Center, the CWB, and

also upgraded it to a tropical storm. The Joint Typhoon Warning Center was upgraded to a tropical storm late that night. On July 19, the JMA reported that Danas had reached its peak wind speeds with maximum 10-minute

sustained wind The maximum sustained wind associated with a tropical cyclone is a common indicator of the intensity of the storm. Within a mature tropical cyclone, it is found within the eyewall at a distance defined as the radius of maximum wind, or RMW. Unl ...

s of 85 km/h (50 mph). Later that day, Danas began to weaken. On July 20, around 13:00 UTC, Danas made landfall in South Korea as a minimal tropical storm, before weakening into a tropical depression soon afterward. The weakening trend also accelerated on July 20 due to the drop in sea surface temperatures to near landfall. The Republic of Korea Meteorological Administration downgraded Danas to a tropical depression at 11 am and stopped issuing announcements. At 12:45 UTC on July 21, Danas transitioned into an extratropical low in the Sea of Japan, and the JMA issued their final advisory on the storm.

Impact

Philippines

In the Philippines, four people were killed after Danas triggered flooding in the country. Agricultural damage in Negros Occidental were calculated at

₱ The Philippine peso sign (₱) is the currency symbol used for the Philippine peso, the official currency of the Philippines. The symbol resembles a Roman letter P with two horizontal strokes. It differs from the currency symbol used for the pe ...

19 million (US$372,000), while agricultural damage in Lanao Norte reached

277.8 million (US$5.44 million).

South Korea

Danas caused stormy weather across South Korea; however, its effects were relatively minor. Heavy rains amounted to in Geomun-do. A man died after being swept away by strong waves in

Geochang County Geochang County (''Geochang-gun,'' ) is a county in South Gyeongsang Province, South Korea. The Geochang International Festival of Theater, which was started in 1989, is renowned as the best play festival in Korea. The District Office is lo ...

. Damage in South Jeolla Province were at W395 million (US$336,000), while damage in Jeju Island up to W322 million (US$274,000). Additionally, Danas also triggered flash flooding in Kyushu. An 11-year-old boy was killed.

Japan

Danas brought heavy rainfall to many western parts of Japan including nearly all of

Kyushu is the third-largest island of Japan's five main islands and the most southerly of the four largest islands ( i.e. excluding Okinawa). In the past, it has been known as , and . The historical regional name referred to Kyushu and its surroun ...

. In addition, the amount of rain that fell in the last 24 hours exceeded 350 mm in various places in Goto, and reaches the rainfall for July 1 month in normal years, and it has become the largest since July.

References