last update
07:05 UTC
SFI: 73 | Ap index:  6  | Kp index:  1  ( n\a @--:--,  n\a @--:--)| X-ray flux:  n\a 
SW: Density= 2.2 p/cm3 | Speed= 362.4 km/s | Temp=43(x1000)K
IMF: Bx=1.3nT | By=-6.2nT | Bz= -0.9 nT | Bt= 6.4 nT | Lat= -8.4 ° | Lon=281.4°
Sunspots: 0 | Area: 0 10-6/Hemi | New regions: 0
[i]X-ray flares: C=0 M=0 X=0 | Optical flares: M1=0 M2=0 M3=0 | Sub-flares=0
After a 21 hours of constant southward orientation, the Bz and Theta (Latitude) IMF components have finally returned to normal values near 0nT and 0° respectively. The southward orientation brought a strong G3 geomagnetic storm. The peak Kp index value reached 7 (strong geomagnetic disturbance). Currently the index is fluctuating between 5 and 6.

This level of activity is associated with the following effects:

Power systems: voltage corrections may be required, false alarms triggered on some protection devices.

Spacecraft operations: surface charging may occur on satellite components, drag may increase on low-Earth-orbit satellites, and corrections may be needed for orientation problems.

Other systems: intermittent satellite navigation and low-frequency radio navigation problems may occur, HF radio may be intermittent, and aurora has been seen as low as Illinois and Oregon (typically 50° geomagnetic lat.)

IRIS is a NASA Small Explorer Mission to observe the characteristics of solar material as it moves through the little-understood interface region between the sun's photosphere and corona that powers the sun's million-degree atmosphere and drives the solar wind.

IRIS was air-launched on an Orbital Sciences Corporation Pegasus rocket.

After some extensive tests the new mobile page is now active. It has a very light design and its overal size is less than 7KB which allows very fast load times on any type of device and mobile connection. The data compiler was also updated and now allows for much faster X-ray flux updates. The indices colour coding was also optimized sidewide and now includes a visual indication in the event of extreme levels.

A new feature on both the mobile and desktop pages is the storm statuses. It shows the current geomagnetic and radiation storm levels as well as the radio blackout level caused by significant x-ray events.

The ACE spacecraft detected an interplanetary shockwave generated by a slow moving coronal mass ejection on June 24th. A G1 geomagnetic storm is expected to start in the next 12 hours. The storm duration is estimated at 24 to 48 hours.

Live coverage of the IRIS launch will begin at 6 p.m. PDT / 9 p.m. EDT on June 27 (1 a.m UTC on June 28th).

UPDATE: Vandenberg Air Force Base officials have determined that due to a significant power outage on the base earlier this week, certain Western Range facilities will not be ready to support the scheduled launch of Orbital's Pegasus rocket, carrying NASA's IRIS observatory on Wed. June 26. Another assessment of the situation will occur at the Launch Readiness Review, now scheduled for Wednesday, June 26. The range officials believe they will be able to restore power to the affected facilities in time to support a launch Thursday, June 27 at 10:27 p.m. EDT (02:27 a.m. UTC June 28).

There will be live TV coverage of the L-1011 departure, as well as the deployment of the Pegasus XL from the L-1011 carrier aircraft. Spacecraft separation from the Pegasus vehicle occurs 13 minutes after launch.

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