:Product: Geophysical Alert Message wwv.txt :Issued: 2026 May 18 1805 UTC # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # # Geophysical Alert Message # 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.