Welcome to space weather, issued by XMDV radio at Thu the 18 Jun 2026 at 17:59:46

In the last 24 hours Solar activity was low with only C-class solar flare activity. Region 4465 underwent some decay and only produced alow-level C-class flare. Region 4469 decayed to plage andwas inactive. Region 4470 underwent some growth, but did not increase in magnetic complexity. The largest solar flare ofthe period, a C2.5 at 17 to 1506 utc, came from just beyond the west limbwith the likely source being recently rotated out of view Region 4464 . New Region 4471 was numbered and wasinactive. No Earth-directed coronal mass ejections were observed in coronagraph imagery. Solar activity is likely to continue at low levels 18 to 20 Jun, with aslight chance for M-class solar flares due primarily to thecombined flare probabilities of Regions 4465 and 4470.

In the last 24 hours The greater than 2 mega electron volt electron flux was at moderate levels and thegreater than 10 mega electron volt proton flux remained at background values. The greater than 2 mega electron volt electron flux is likely to continue reachingmoderate levels 18 to 20 Jun; while the greater than 10 mega electron volt proton flux isexpected to remain at background.

In the last 24 hours Solar wind parameters were at nominal levels. Total field strength wasmostly below 5 nano tesla while the Bz component was at benign levels. Solar winspeeds were between 400 to 450 kilometers per second. Phi switched to a negative orientationafter 17 to 2200 utc. Mild solar wind disturbance and enhancements are anticipated through 20Jun due to weak positive polarity coronal hole high speed stream effects.

In the last 24 hours The geomagnetic field was quiet. The geomagnetic field is likely to be quiet to unsettled on 18 june inresponse to weak coronal hole high speed stream influences. Slightly more response is forecast 19 to 20 june with unsettled to active conditions likely due to additionaland continuing coronal hole high speed stream effects.

This has been space weather, issued by XMDV radio at Thu the 18 Jun 2026 at 17:59:46

Space weather was created by William Greenwood with material from the N O double A