Extreme Heat Warning issued September 21 at 9:27AM AST until September 21 at 4:00PM AST by NWS San Juan PR

Published: 21 September 2025
Categories: National Weather Service

RSS feed source: US National Weather Service

* WHAT…This level of heat affects anyone without effective cooling and/or adequate hydration. Impacts likely in some health systems, heat-sensitive industries and infrastructure. * WHERE…All urban and coastal areas, as well as the eastern interior of Puerto Rico. * WHEN…Until 4 PM AST this afternoon. * IMPACTS…Heat related illnesses increase significantly during extreme heat and high humidity events.

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Popocatépetl Volcano Volcanic Ash Advisory: CONS LGT VA EMS. to 22000 ft (6700 m)

Published: 21 September 2025
Categories: Global Volcano Activity

RSS feed source: US National Weather Service

Background:

Volcán Popocatépetl, whose name is the Aztec word for smoking mountain, towers to 5426 m 70 km SE of Mexico City to form North America’s 2nd-highest volcano.  The glacier-clad stratovolcano contains a steep-walled, 250-450 m deep crater.  The generally symmetrical volcano is modified by the sharp-peaked Ventorrillo on the NW, a remnant of an earlier volcano. 
At least three previous major cones were destroyed by gravitational failure during the Pleistocene, producing massive debris-avalanche deposits covering broad areas south of the volcano.  The modern volcano was constructed to the south of the late-Pleistocene to Holocene El Fraile cone.  Three major plinian eruptions, the most recent of which took place about 800 AD, have occurred from Popocatépetl since the mid Holocene, accompanied by pyroclastic flows and voluminous lahars that swept basins below the volcano.  Frequent historical eruptions, first recorded in Aztec codices, have occurred since precolumbian

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Moderate mag. 4.0 earthquake (unconfirmed) – Selangor, 27 km southwest of Kuala Lumpur, Kuala Lumpur, Malaysia, on Sunday, Sep 21, 2025, at 08:59 pm (GMT +8)

Published: 21 September 2025
Categories: Global Earthquake Activity

RSS feed source: US National Weather Service

2 km (1 mi)

S of epicenter

Eco Sanctuary

(pop: 5,830)

III: Weak

Kuala Langat, Selangor 7 km (4 mi)

NE of epicenter

Putra Heights

(pop: 60,000)

III: Weak

Petaling, Selangor 8 km (5 mi)

SW of epicenter

Teluk Panglima Garang

(pop: 49,200)

III: Weak

Kuala Langat, Selangor 10 km (6 mi)

SW of epicenter

Jenjarum

(pop: 24,900)

III: Weak

Kuala Langat, Selangor 14 km (8 mi)

NW of epicenter

Klang

(pop: 879,900)

III: Weak

Selangor 14 km (9 mi)

NW of epicenter

Pandamaran

(pop: 53,900)

III: Weak

Klang, Selangor 14 km (9 mi)

E of epicenter

Cyberjaya

(pop: 79,200)

III: Weak

Sepang, Selangor 15 km (9 mi)

N of epicenter

Shah Alam

(pop: 740,800)

III: Weak

Petaling, Selangor 15 km (10 mi)

S of epicenter

Banting

(pop: 48,200)

III: Weak

Kuala Langat, Selangor 17 km (10 mi)

NE of epicenter

Bandar Kinrara

(pop: 93,800)

III: Weak

Petaling, Selangor 19 km (12 mi)

NW of epicenter

Bandar Bukit Raja

(pop: 146,500)

III: Weak

Klang, Selangor 19 km (12 mi)

NW of epicenter

Setia Alam

(pop: 150,000)

III: Weak

Petaling, Selangor 19 km (12 mi)

NE of epicenter

Petaling Jaya

(pop: 902,100)

III: Weak

Petaling, Selangor 20 km (12 mi)

N of epicenter

Ara Damansara

(pop: 60,000)

III: Weak

Petaling, Selangor

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Moderate mag. 4.3 earthquake (unconfirmed) – Taiwan on Sunday, Sep 21, 2025, at 11:45 am (Universal Time)

Published: 21 September 2025
Categories: Global Earthquake Activity

RSS feed source: US National Weather Service

Date and TimeMag
DepthDistanceLocationDetailsMap Sep 21, 12:36 pm (Taipei)

4.5

26 km4 km (2.5 mi) to the NW Philippine Sea, 28 km northeast of Hualien City, Taiwan  I FELT IT InfoSep 19, 05:21 am (Taipei)

4.6

21 km24 km (15 mi) to the SW 7 km ESE of Hualien City, Taiwan  I FELT IT – 1 reportInfoSep 13, 01:46 pm (GMT +9)

4.6

40 km72 km (45 mi) to the E Philippine Sea, 72 km southwest of Kumi Island, Okinawa, Japan InfoSep 8, 02:50 pm (GMT +9)

4.8

10 km82 km (51 mi) to the SE Philippine Sea, 92 km southwest of Kumi Island, Okinawa, Japan InfoSep 7, 08:29 pm (GMT +9)

4.9

32 km72 km (45 mi) to the E 75 km SW of Yonakuni, Japan InfoApr 3, 2024 08:11 am (Taipei)

6.4

14 km16 km (10.1 mi) to the W Philippine Sea, 16 km northeast of Hualien City, Taiwan 32 reportsInfoApr 3, 2024 07:58 am (Taipei)

7.4

40 km40 km (25 mi) to the SW Philippine Sea, 16 km south of Hualien City, Taiwan 232 reportsInfoMar 23, 2022 01:41 am (Taipei)

6.7

24 km85 km (53 mi) to the S 65 km S of Hualien City, Taiwan 89 reportsInfoFeb 6, 2018 11:50 pm (Taipei)

6.4

17 km18 km (11 mi) to the W 18 km north of Hualien City, Taiwan 52 reportsInfoApr 20, 2015 10:42 am (GMT +9)

6.6

30 km61 km (38 mi) to the E Philippine Sea, 64 km southwest of Kumi Island, Okinawa, Japan 35 reportsInfoDec 19, 2009 09:02 pm (Taipei)

6.4

43 km43 km (27 mi) to the SW Philippine Sea, 20 km south of Hualien City, Taiwan InfoDec 26, 2006 08:26

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