Air Quality Alert issued August 20 at 6:10PM MDT by NWS Denver CO

Published: 20 August 2025
Categories: National Weather Service

RSS feed source: US National Weather Service

The Colorado Department of Public Health and Environment has issued the following… WHAT…Action Day for No Action Day. WHERE…Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN…400 PM Wednesday August 20 to 400 PM Thursday August 21 IMPACTS…Action Day for No Action Day is now in effect for the Front Range Urban Corridor. Hot, stagnant weather will allow ozone to reach the Unhealthy for Sensitive Groups category on Wednesday and Thursday. For Colorado air quality conditions, forecasts, and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx If possible, please help us reduce ozone pollution by limiting driving gas and diesel-powered vehicles until at least 4 p.m. Thursday, August 21, 2025. Colorado

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Moderate mag. 4.2 earthquake – Banda Sea, 47 km south of Pulau Damar Island, Maluku, Indonesia, on Thursday, Aug 21, 2025, at 08:35 am (Jayapura time)

Published: 20 August 2025
Categories: Global Earthquake Activity

RSS feed source: US National Weather Service

Date and TimeMag
DepthDistanceLocationDetailsMap Aug 16, 02:09 am (GMT +9)

4.5

121 km22 km (14 mi) to the W Banda Sea, 59 km southwest of Pulau Damar Island, Maluku, Indonesia  I FELT IT InfoAug 12, 11:12 am (Jayapura)

4.3

150 km97 km (60 mi) to the NE Banda Sea, 68 km northwest of Pulau Dai Island, Maluku, Indonesia  I FELT IT InfoAug 12, 06:33 am (GMT +9)

4.6

209 km50 km (31 mi) to the W Banda Sea, 53 km east of Pulau Maopora Island, Maluku, Indonesia InfoAug 11, 02:51 am (GMT +9)

4.6

145 km36 km (22 mi) to the W Banda Sea, 65 km east of Pulau Maopora Island, Maluku, Indonesia InfoAug 6, 06:33 pm (GMT +9)

4.9

50 km79 km (49 mi) to the W Banda Sea InfoNov 8, 2023 01:53 pm (GMT +9)

7.1

6 km170 km (106 mi) to the NE Banda Sea, 166 km north of Pulau Wetan Island, Maluku, Indonesia InfoOct 26, 2023 02:44 pm (Jayapura)

6.1

10 km97 km (60 mi) to the E Indonesia: Di Laut 176 Km Timur Laut Maluku Barat Daya 24 reportsInfoJan 10, 2023 02:47 am (Jayapura)

7.9

131 km188 km (117 mi) to the E Banda Sea, 101 km northeast of Pulau Wetan Island, Maluku, Indonesia 880 reportsInfoFeb 2, 2022 04:25 am (GMT +9)

6.0

119 km22 km (13 mi) to the W 184 km NE of Lospalos, Timor Leste 55 reportsInfoDec 30, 2021 03:25 am (Jayapura)

7.3

165 km102 km (63 mi) to the W Banda Sea, 19 km east of Pulau Romang Island, Maluku, Indonesia 1221 reportsInfoJun 24, 2019 11:53 am (Jayapura)

7.3

214 km146 km (90 mi) to the NE Banda Sea

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Lewotobi Volcano Volcanic Ash Advisory: VA TO FL080 MOV N OBS AT 20/2300Z OBS VA DTG: 20/2300Z to 8000 ft (2400 m)

Published: 20 August 2025
Categories: Global Volcano Activity

RSS feed source: US National Weather Service

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Light mag. 3.9 earthquake – Philippine Sea, 48 km northeast of Santa Monica, Philippines, on Thursday, Aug 21, 2025, at 07:29 am (GMT +8)

Published: 20 August 2025
Categories: Global Earthquake Activity

RSS feed source: US National Weather Service

Date and TimeMag
DepthDistanceLocationDetailsMap Aug 21, 07:23 am (GMT +8)

4.2

10 km5.5 km (3.4 mi) to the SE Philippine Sea, 45 km northeast of Santa Monica, Philippines  I FELT IT InfoAug 16, 02:34 am (Manila)

3.0

1 km80 km (50 mi) to the W Philippine Sea, 38 km north of Dinagat Island, Philippines  I FELT IT

Info

Aug 14, 06:35 pm (GMT +8)

3.3

2 km54 km (33 mi) to the E Philippine Sea, 92 km northeast of Siargao Island, Philippines  I FELT IT

Info

Aug 13, 08:39 pm (GMT +8)

3.5

3 km66 km (41 mi) to the E Philippine Sea, 104 km northeast of Siargao Island, Philippines

Info

Aug 12, 02:37 am (GMT +8)

3.0

11 km8.6 km (5.4 mi) to the SE Philippine Islands Region

Info

Jul 25, 04:07 am (GMT +8)

3.9

10 km53 km (33 mi) to the S Mindanao, Philippines

Info

Jul 23, 06:49 am (GMT +8)

4.4

35 km98 km (61 mi) to the S 44 km NE of Cortes, Philippines InfoJul 17, 10:29 pm (GMT +8)

3.9

10 km37 km (23 mi) to the S Philippine Islands Region 1 report

Info

Jul 13, 07:44 am (GMT +8)

4.1

8 km76 km (47 mi) to the N Philippine Sea, 58 km east of Guiuan, Philippines InfoDec 2, 2023 10:37 pm (Manila)

7.6

40 km211 km (131 mi) to the S Philippine Sea, 36 km north of Bislig, Philippines 565 reportsInfoMar 8, 2019 11:06 pm (GMT +8)

5.9

28 km16 km (9.8 mi) to the W Philippine Islands Region 229 reportsInfoFeb 8, 2019 07:55 pm (GMT +8)

5.8

8.9 km69 km (43 mi) to the S Mindanao, Philippines 212 reportsInfoMay 10, 2018 07:56 pm (Manila)

5.7

29 km69 km (43 mi) to the SW Dinagat Islands, 45 km

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