Earthquakes

Magnitude 5+ Earthquakes – Global

5.3 earthquake hits the Scotia Sea.

5.1 earthquake hits Alaska.

5.1 earthquake hits the South Sandwich Islands.

5.0 earthquake hits the Gulf go California.

Storms and Floods

Tropical Storms – Roundup of Tropical Storms:

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In the Atlantic Ocean: Post Tropical Cyclone Beta is located about 60 mi…100 km nne of Birmingham Alabama with maximum sustained winds…10 mph…20 km/h. Present movement…ne or 50 degrees at 10 mph…17 km/h.

In the Eastern Pacific Ocean: Tropical Storm 17e (Lowell), located approximately 820 nm southwest of San Diego, is tracking westward at 10 knots.

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NewsBytes:

Texas, USA – Record rainfall from Tropical Storm Beta caused flooding in parts of Texas, USA, from 22 September. Beta made landfall over Matagorda Bay along the coast of central Texas on 22 September, 2020 with maximum sustained winds of 75 km/h. Beta dumped more than 16 inches / 400 mm of rain as it made its way over Texas. Extensive flooding was reported across Houston and surrounding areas after heavy rainfall swamped roads and caused rivers and bayous to overflow, including the Buffalo Bayou which flooding streets in Downtown Houston.

India – Extremely heavy rainfall inundated wide areas of Mumbai, India, from 22 to 24 September. Local media report that Mumbai recorded nearly 400 mm in 48 hours. Roads of the city were swamped, stranding several vehicles and causing traffic chaos. Flooding on railway lines disrupted rail services. Media reported some residents in the Kranti Nagar area of the city were evacuated.

Global Warming

Scorching Summer

Scientists have calculated that this June, July and August were 2.2 degrees Fahrenheit warmer than the 20th-century average, making the season the hottest Northern Hemisphere summer on record. During the same period, the Southern Hemisphere experienced its third-warmest winter yet. NOAA predicts this abnormal warmth could lead to 2020 being one of the five hottest years on record.

Arctic Melt

Arctic sea ice melted to its second-smallest expanse on record on Sept. 15, covering only 1.44 million square miles around the North Pole, according to the U.S. National Snow and Ice Data Center. Only during the summer of 2012 did the polar ice cap shrink farther. And since the unprecedented drops in sea ice extent in 2007 and 2012, there have been fewer areas with thick, multiyear ice that has accumulated over countless winters. Experts believe this and global heating will keep the ice from recovering, and will soon lead to ice-free summers across the Arctic.

Environment

Global Temperature Extremes

The week’s hottest temperature was 118 degrees Fahrenheit (46.7 degrees Celsius) in Yanbu, Saudi Arabia.

The week’s coldest temperature was minus 101.0 degrees Fahrenheit (minus 73.9 degrees Celsius) at Vostok, Antarctica.

Temperatures were tabulated from the more than 10,000 worldwide synoptic weather stations. The United Nations World Meteorological Organization sets the standards for weather observations, and provides a global telecommunications circuit for data distribution.

Wildfires

Wildfires – California, USA

Creek Fire – As of 7 p.m. on September 24, this fire had burned 291,426 acres with 36% containment. Full containment is expected Oct. 15.

North Complex – As of 7 p.m. Sept. 24, these fires had burned 304,492 acres and 78% contained. The North Complex West (formerly the Bear Fire) makes up 84,583 acres the total and is 69% contained.

August Complex – As of 9:50 a.m. on Sept. 24, these fires had burned 862,733 acres and were 39% contained. This is now the largest recorded fire in California history.

LNU Lightning Complex – As of 11:55 a.m. on Sept. 22, these fires have burned 363,220 acres and were 98% contained.

SCU Lightning Complex – As of 8:41 a.m. on Sept. 19, these fires have burned 396,624 acres and were 98% contained.

Deadly Smoke from California Wildfires

The heavy smoke from wildfires that choked much of California in recent weeks was more than an inconvenience. It was deadly. And it almost certainly killed more people than the flames from the massive fires themselves, health experts say.

Between Aug. 1 and Sept. 10, the historically bad concentrations of wildfire smoke were responsible for at least 1,200 and possibly up to 3,000 deaths in California that otherwise would not have occurred, according to an estimate by researchers at Stanford University. Those fatalities were among people age 65 and over, most of whom were living with pre-existing medical conditions like heart disease, diabetes and respiratory ailments.

By comparison, through Wednesday, 26 people have died directly in wildfires this year statewide.

Disease

COVID-19

The countries with the 10 greatest number of Covid-19 cases:

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Chikungunya – Chad

From July through 20 September 2020, a total of 27 540 cases were reported in three provinces, distributed as follows: 24 302 cases in the health district of Abéché, 3237 cases in the health district of Biltine, and one case in the health district of Abdi. One death has been reported to date in district of Abéché.

Volcanos

Roundup of Global Volcanic Activity – Ongoing Activity for the Week 16 September 2020 – 22 September 2020

Aira | Kyushu (Japan) : JMA reported that very small eruptive events at Minamidake Crater (at Aira Caldera’s Sakurajima volcano) were occasionally recorded during 14-21 September. Crater incandescence was visible at night. An eruption at 0810 on 15 September generated an ash plume that rose 1 km above the crater rim. The Alert Level remained at 3 (on a 5-level scale).

Dukono | Halmahera (Indonesia) : Based on satellite and wind model data, and information from PVMBG, the Darwin VAAC reported that during 17-22 September ash plumes from Dukono rose 2.1 km (7,000 ft) a.s.l. and drifted SW, W, NW, and N. The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to remain outside of the 2-km exclusion zone.

Ebeko | Paramushir Island (Russia) : Volcanologists in Severo-Kurilsk (Paramushir Island), about 7 km E of Ebeko, observed explosions during 11 and 14-17 September that sent ash plumes up to 3 km (10,000 ft) a.s.l. and drifted SE, E, N, and NW. A thermal anomaly over the volcano was visible in satellite data on 13 and 15 September. Ash fell in Severo-Kurilsk during 14-15 September. The Aviation colour Code remained at Orange (the second highest level on a four-colour scale).

Etna | Sicily (Italy) : INGV reported that during 14-20 September activity at Etna’s New Southeast Crater (NSEC) was characterized by Strombolian activity and ash emissions. The ejection of incandescent material onto the crater rim and the S flank was occasionally visible during phases of increased activity. Minor ash emissions sporadically rose from Voragine Crater (VOR). Strombolian activity also occurred within Northeast Crater (NEC).

Fuego | Guatemala : INSIVUMEH reported that effusive activity at Fuego decreased as of 16 September; the lava flow that had descended the Ceniza drainage (SSW) was no longer active. There were 6-16 explosions per hour recorded during 16-22 September, generating ash plumes as high as 1.1 km above the crater rim that generally drifted 7-20 km in multiple directions. Shock waves rattled buildings within a 20-km radius. Sometimes incandescent material ejected 100-300 m high caused avalanches of blocks in the Ceniza, Seca (W), Trinidad (S), Taniluyá (SW), Las Lajas, and Honda drainages; avalanches sometimes reached vegetated areas. Ashfall was reported daily in several areas downwind including Morelia (9 km SW), Panimaché I and II (8 km SW), Finca Palo Verde, Santa Sofía (12 km SW), San Pedro Yepocapa (8 km NW), and Sangre de Cristo (8 km WSW). During 18-19 September lahars descended the Ceniza, Las Lajas, and Honda drainages, carrying tree branches, trunks, and blocks as large as 1.5 m in diameter. Additionally, lava flows traveled 200-350 m down the Seca and Ceniza drainages.

Ibu | Halmahera (Indonesia) : PVMBG reported that during 15-22 September white-and-gray ash plumes rose 200-800 m above Ibu’s summit and drifted in multiple directions. The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to stay at least 2 km away from the active crater, and 3.5 km away on the N side.

Kadovar | Papua New Guinea : Based on satellite data, the Darwin VAAC reported that during 21-22 September ash plumes from Kadovar rose to an altitude of 1.5 km (5,000 ft) a.s.l. and drifted NW.

Nevados de Chillan | Chile : On 22 September SERNAGEOMIN reported that lava continued to advance down Nevados de Chillán’s NNE flank. Gas emissions and occasional explosions were also recorded. The Alert Level remained at Yellow, the second lowest level on a four-colour scale, and residents were reminded not to approach the crater within 3 km. ONEMI stated that Alert Level Yellow (the middle level on a three-colour scale) remained in place for the communities of Pinto and Coihueco, noting that as of 16 June the public should stay at least 3 km away from the crater on the SW flank and 5 km away on the NE flank.

Popocatepetl | Mexico : CENAPRED reported that each day during 16-21 September there were 52-121 steam-and-gas emissions from Popocatépetl, most of which contained minor amounts of ash. Weather clouds often obscured views of the volcano. The Alert Level remained at Yellow, Phase Two (middle level on a three-colour scale).

Rincon de la Vieja | Costa Rica : OVSICORI-UNA reported that small, frequent eruptions at Rincón de la Vieja continued to be recorded, though sometimes not visually confirmed, during 16-22 September. A larger event, at 1053 on 22 September, ejected material out of the crater and into the drainages on the N flank.

Semeru | Eastern Java (Indonesia) : According to PVMBG ground-based observers noted ash plumes from Semeru rising 500 m above the summit and drifting SE on 17 September. An ash plume rose 200 m and drifted N the next day. The Alert Level remained at 2 (on a scale of 1-4).

Sheveluch | Central Kamchatka (Russia) : KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 11, 13-14, and 16-17 September; weather clouds prevented views on other days during 11-18 September. The Aviation colour Code remained at Orange (the second highest level on a four-colour scale).

Suwanosejima | Ryukyu Islands (Japan) : JMA reported nighttime incandescence at Suwanosejima’s Ontake Crater during 11-18 September. An explosion at 0155 on 15 September generated an ash plume that rose 1.5 km above the crater rim and ejected large rocks as far as 400 m from the crater. The Alert Level remained at 2 (on a 5-level scale).