Geomagnetic Storms G2 Warning Condition: Persistence

Space Weather Message Code: WARK04
Serial Number: 1746
Issue Time: 2011 Jun 05 1453 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1745
Valid From: 2011 Jun 04 2055 UTC
Now Valid Until: 2011 Jun 05 2359 UTC
Warning Condition: Persistence




Geomagnetic Storm G 2

Moderate

Power systems: high-latitude
power systems may experience voltage alarms, long-duration storms may
cause transformer damage.

Spacecraft
operations: corrective actions to orientation may be required by
ground control; possible changes in drag affect orbit predictions.

Other systems: HF radio propagation can fade at
higher latitudes, and aurora has been seen as low as New York and Idaho
(typically 55° geomagnetic lat.)**.

Kp = 6