WWV Solar Terrestrial Reports Solar Terrestrial Reports from NOAA Space Weather Prediction Center http://www.n2jtx.com/wwv.cgi en Tue, 19 May 2026 12:10:02 GMT robert@schaffrath.net (Robert G. Schaffrath) robert@schaffrath.net (Robert G. Schaffrath) wwv-update.js (Node.js v22.22.3) 2026-05-19@1200Z 2026-05-19 1200Z SFI=105, A=9, K=4.00, None;Minor/G1 Solar-terrestrial indices for 18 May follow.
Solar flux 105 and estimated planetary A-index 9.
The estimated planetary K-index at 1200 UTC on 19 May was 4.00.

No space weather storms were observed for the past 24 hours.

Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level are likely.


]]> https://services.swpc.noaa.gov/text/wwv.txt 2026-05-19@0900Z 2026-05-19 0900Z SFI=105, A=9, K=3.67, None;Minor/G1 Solar-terrestrial indices for 18 May follow.
Solar flux 105 and estimated planetary A-index 9.
The estimated planetary K-index at 0900 UTC on 19 May was 3.67.

No space weather storms were observed for the past 24 hours.

Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level are likely.


]]> ftp://ftp.swpc.noaa.gov/pub/forecasts/wwv/0519wwv.txt 2026-05-19@0600Z 2026-05-19 0600Z SFI=105, A=9, K=3.00, None;Minor/G1 Solar-terrestrial indices for 18 May follow.
Solar flux 105 and estimated planetary A-index 9.
The estimated planetary K-index at 0600 UTC on 19 May was 3.00.

No space weather storms were observed for the past 24 hours.

Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level are likely.


]]> ftp://ftp.swpc.noaa.gov/pub/forecasts/wwv/0519wwv.txt 2026-05-19@0300Z 2026-05-19 0300Z SFI=105, A=9, K=1.67, None;Minor/G1 Solar-terrestrial indices for 18 May follow.
Solar flux 105 and estimated planetary A-index 9.
The estimated planetary K-index at 0300 UTC on 19 May was 1.67.

No space weather storms were observed for the past 24 hours.

Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level are likely.


]]> ftp://ftp.swpc.noaa.gov/pub/forecasts/wwv/0519wwv.txt 2026-05-19@0000Z 2026-05-19 0000Z SFI=105, A=9, K=2.67, None;Minor Solar-terrestrial indices for 18 May follow.
Solar flux 105 and estimated planetary A-index 9.
The estimated planetary K-index at 0000 UTC on 19 May was 2.67.

No space weather storms were observed for the past 24 hours.

Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level .


]]> ftp://ftp.swpc.noaa.gov/pub/forecasts/wwv/0519wwv.txt 2026-05-18@2100Z 2026-05-18 2100Z SFI=105, A=13, K=2.33, None;Minor/G1 Solar-terrestrial indices for 18 May follow.
Solar flux 105 and estimated planetary A-index 13.
The estimated planetary K-index at 2100 UTC on 18 May was 2.33.

No space weather storms were observed for the past 24 hours.

Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level are likely.


]]> ftp://ftp.swpc.noaa.gov/pub/forecasts/wwv/0518wwv.txt 2026-05-18@1800Z 2026-05-18 1800Z SFI=104, A=8, K=2.00, None;Minor/G1 Solar-terrestrial indices for 17 May follow.
Solar flux 104 and estimated planetary A-index 8.
The estimated planetary K-index at 1800 UTC on 18 May was 2.00.

No space weather storms were observed for the past 24 hours.

Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level are likely.


]]> ftp://ftp.swpc.noaa.gov/pub/forecasts/wwv/0518wwv.txt 2026-05-18@1500Z 2026-05-18 1500Z SFI=104, A=8, K=2.67, None;Minor/G1 Solar-terrestrial indices for 17 May follow.
Solar flux 104 and estimated planetary A-index 8.
The estimated planetary K-index at 1500 UTC on 18 May was 2.67.

No space weather storms were observed for the past 24 hours.

Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level are likely.


]]> ftp://ftp.swpc.noaa.gov/pub/forecasts/wwv/0518wwv.txt 2026-05-18@1200Z 2026-05-18 1200Z SFI=104, A=8, K=2.00, None;Minor/G1 Solar-terrestrial indices for 17 May follow.
Solar flux 104 and estimated planetary A-index 8.
The estimated planetary K-index at 1200 UTC on 18 May was 2.00.

No space weather storms were observed for the past 24 hours.

Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level are likely.


]]> ftp://ftp.swpc.noaa.gov/pub/forecasts/wwv/0518wwv.txt 2026-05-18@0900Z 2026-05-18 0900Z SFI=104, A=8, K=2.33, None;Minor/G1 Solar-terrestrial indices for 17 May follow.
Solar flux 104 and estimated planetary A-index 8.
The estimated planetary K-index at 0900 UTC on 18 May was 2.33.

No space weather storms were observed for the past 24 hours.

Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level are likely.


]]> ftp://ftp.swpc.noaa.gov/pub/forecasts/wwv/0518wwv.txt 2026-05-18@0600Z 2026-05-18 0600Z SFI=104, A=8, K=2.33, None;Minor/G1 Solar-terrestrial indices for 17 May follow.
Solar flux 104 and estimated planetary A-index 8.
The estimated planetary K-index at 0600 UTC on 18 May was 2.33.

No space weather storms were observed for the past 24 hours.

Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level are likely.


]]> ftp://ftp.swpc.noaa.gov/pub/forecasts/wwv/0518wwv.txt 2026-05-18@0300Z 2026-05-18 0300Z SFI=104, A=8, K=2.33, Minor/R1;Minor/G1 Solar-terrestrial indices for 17 May follow.
Solar flux 104 and estimated planetary A-index 8.
The estimated planetary K-index at 0300 UTC on 18 May was 2.33.

Space weather for the past 24 hours has been minor.
Radio blackouts reaching the R1 level occurred.

Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level are likely.


]]> ftp://ftp.swpc.noaa.gov/pub/forecasts/wwv/0518wwv.txt 2026-05-18@0000Z 2026-05-18 0000Z SFI=104, A=8, K=2.00, Minor/R1;Minor/G1 Solar-terrestrial indices for 17 May follow.
Solar flux 104 and estimated planetary A-index 8.
The estimated planetary K-index at 0000 UTC on 18 May was 2.00.

Space weather for the past 24 hours has been minor.
Radio blackouts reaching the R1 level occurred.

Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level are likely.


]]> ftp://ftp.swpc.noaa.gov/pub/forecasts/wwv/0518wwv.txt 2026-05-17@2100Z 2026-05-17 2100Z SFI=104, A=12, K=2.33, Minor/R1;Minor/G1 Solar-terrestrial indices for 17 May follow.
Solar flux 104 and estimated planetary A-index 12.
The estimated planetary K-index at 2100 UTC on 17 May was 2.33.

Space weather for the past 24 hours has been minor.
Radio blackouts reaching the R1 level occurred.

Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level are likely.


]]> ftp://ftp.swpc.noaa.gov/pub/forecasts/wwv/0517wwv.txt 2026-05-17@1800Z 2026-05-17 1800Z SFI=109, A=34, K=2.00, Minor/R1;Minor/G1 Solar-terrestrial indices for 16 May follow.
Solar flux 109 and estimated planetary A-index 34.
The estimated planetary K-index at 1800 UTC on 17 May was 2.00.

Space weather for the past 24 hours has been minor.
Radio blackouts reaching the R1 level occurred.

Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level are likely.


]]> ftp://ftp.swpc.noaa.gov/pub/forecasts/wwv/0517wwv.txt 2026-05-17@1500Z 2026-05-17 1500Z SFI=109, A=34, K=2.33, Minor/G1/R1;Minor/G1 Solar-terrestrial indices for 16 May follow.
Solar flux 109 and estimated planetary A-index 34.
The estimated planetary K-index at 1500 UTC on 17 May was 2.33.

Space weather for the past 24 hours has been minor.
Geomagnetic storms reaching the G1 level occurred.
Radio blackouts reaching the R1 level occurred.

Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level are likely.


]]> ftp://ftp.swpc.noaa.gov/pub/forecasts/wwv/0517wwv.txt 2026-05-17@1200Z 2026-05-17 1200Z SFI=109, A=34, K=2.33, Minor/G1/R1;Minor/G1 Solar-terrestrial indices for 16 May follow.
Solar flux 109 and estimated planetary A-index 34.
The estimated planetary K-index at 1200 UTC on 17 May was 2.33.

Space weather for the past 24 hours has been minor.
Geomagnetic storms reaching the G1 level occurred.
Radio blackouts reaching the R1 level occurred.

Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level are likely.


]]> ftp://ftp.swpc.noaa.gov/pub/forecasts/wwv/0517wwv.txt