Viewing archive of Friday, 9 June 2000
Geophysical report
Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Solar and Geophysical Activity Summary 2000 Jun 09 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 161 Issued at 0245Z on 09 JUN 2000 This report is compiled from data received at SWO on 08 JUNA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0052 0104 0122 C4.7 950 26 0810 0811 0818 200 0855 0856 0856 120 1739 1739 1740 170 1903 1904 1905 450
B. Proton Events
THE GREATER THAN 10 MEV PROTON FLUX AT
GEOSYNCHRONOUS ORBIT REMAINED ABOVE THRESHOLD VALUES THROUGHOUT THE
PERIOD. FLUX PEAKED AT 84 PFU'S AT 08/0940Z, AND DECREASED TO ABOUT
14 PFU BY END PERIOD.
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS AT
UNSETTLED TO SEVERE STORM LEVELS. A SUDDEN IMPULSE OCCURRED AT
08/0909Z (77 NT, AS MEASURED BY THE BOULDER USGS MAGNETOMETER) AS A
RESULT OF SHOCK ARRIVAL MEASUED AT THE ACE SPACECRAFT, WHERE SOLAR
WIND VELOCITY JUMPED FROM 520 TO OVER 800 KM/S AT 08/0841Z AND BZ
DROPPED TO ABOUT -20NT. MINOR TO SEVERE STORM LEVELS WERE OBSERVED
FOLLOWING THE SHOCK ARRIVAL. THIS SHOCK IS PRESUMED TO BE RELATED
TO THE X2/3B EVENT ON 06 JUNE.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 175 SSN 203 AFR/AP 034/053 X-RAY BACKGROUND C1.3 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 3.1E+08 GT 10 MEV 3.5E+06 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 1.00E+07 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 3 3 3 5 5 5 4 3 PLANETARY 3 4 4 7 7 6 5 4
F. Comments
A MODERATE (7.4 PERCENT) FORBUSH DECREASE PEAKED NEAR 08/1449Z. A MAGNETOPAUSE CROSSING WAS OBSERVED ON GOES-8 (W075) BEGAN AT 08/1510Z AND CONTINUED UNTIL APPROXIMATELY 08/1615Z.
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