Viewing archive of Friday, 4 June 1999
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 1999 Jun 04 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 155 Issued at 0245Z on 04 JUN 1999 This report is compiled from data received at SWO on 03 JUNA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0601 0601 0601 160 0629 0631 0637 8557 S28W11 SF 140 0640 0644 0650 8562 S15W08 M1.0 SF 0738 0743 0754 8560 S23W07 C5.6 1N 270 0800 0804 0810 8562 S15W09 SF 120 0943 0949 0953 8562 S15W10 C2.3 SF 170 1044 1048 1054 8562 S15W11 C3.5 1F 110 1100 1100 1109 8554 N26W66 SF 1100 1104 1105 1110 8562 S17W10 SF 120 1221 1222 1222 100 1500 1501 1502 190 1651 1651 1654 110 2029 2029 2029 240 2058 2101 2106 8552 N19W69 C1.5 SF 1000 2237 2237 2249 8554 N24W73 SF 120
B. Proton Events
THE GREATER THAN 10 MEV PROTON EVENT ENDED: START
02/0245Z, MAXIMUM OF 42 PFU AT 02/1010Z, AND END 03/1410Z. THE FLUX
REMAINED ENHANCED AT THE END OF THE PERIOD AND WAS GRADUALLY
DECLINING TOWARDS BACKGROUND.
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS ACTIVE
DURING THE FIRST THREE HOURS OF THE PERIOD FOLLOWING THE PASSAGE OF
A WEAK INTERPLANETARY SHOCK OBSERVED AT L1 AT 02/2035Z. FIELD
ACTIVITY DECLINED TO MOSTLY QUIET LEVELS AFTER 03/0300Z. ANOTHER
WEAK SHOCK WAS OBSERVED AT L1 AT 03/2145Z FOLLOWED BY A WEAK SUDDEN
IMPULSE (SI) AT EARTH AT 03/2221Z (12 NT, AS MEASURED BY THE BOULDER
USGS MAGNETOMETER). THE FIELD WAS NOT SIGNIFICANTLY DISTURBED
FOLLOWING THE SI.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 174 SSN 176 AFR/AP 008/008 X-RAY BACKGROUND C1.3 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 6.2E+06 GT 10 MEV 9.9E+05 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 7.70E+05 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 4 2 2 2 2 1 1 2 PLANETARY 4 1 1 2 2 2 2 2
F. Comments
None
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