Space Weather Outlook #00- 24
SEC Space Weather Advisory
Official Space Weather Advisory issued by NOAA Space Environment Center Boulder, Colorado, USA
SPACE WEATHER OUTLOOK #00- 24
2000 June 06 at 7:30 a.m. MDT (2000 June 06 1330 UT)
**** SPACE WEATHER OUTLOOK ****
Summary For May 29-June 4 Category R2 (moderate) radio blackouts occurred at 1:38 p.m. MDT on June 2 (2000 June 2
1938 UTC) and 1:24 p.m. MDT on June 3 (2000 June 3 1924 UTC). R2 radio blackouts typically cause some or all effects on
the following on the sunlit portion of earth: limited blackout of HF (high frequency) radio communication signals resulting in
loss of radio contact for tens of minutes for mariners and en route aviators, and degradation of low-frequency navigation signals
for tens of minutes affecting maritime and general aviation positioning. Category G1 (minor) geomagnetic storm levels occurred
on May 29. G1 storm levels typically cause some or all effects on the following: weak power grid fluctuations, minor impacts
on satellite operations, and the aurora seen at high latitudes (60 degrees).
Outlook For June 7-13 Strong geomagnetic storm levels (Category G3 on the NOAA Space Weather Scale) are expected
during June 8 – 9. These storm levels may cause some or all effects on the following: power system grids may require voltage
corrections, false alarms may be triggered on protection devices, and high “gas-in-oil” transformer readings may occur;
spacecraft may experience surface charging, increased drag, and orientation problems may need correction; HF radio
propagation may be intermittent; intermittent low-frequency radio navigation and satellite navigation problems may occur; and
the aurora may be seen as low as 50 degrees. Isolated category R2 – R3 (moderate – strong) radio blackouts are expected during
the period with effects similar to those mentioned in the summary.