Viewing archive of Tuesday, 18 July 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 Jul 18 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 200 Issued at 0245Z on 18 JUL 2000 This report is compiled from data received at SWO on 17 JULA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0020 0020 0021 140 0031 0034 0038 9088 N19E03 C8.1 SF 350 0032 0033 0048 9087 S12E46 SN 420 31 1111 1112 1112 660 1335 1345 1348 9087 S08E31 M1.2 1F 2800 14 1438 1439 1444 9087 S08E33 SF 130 1806 1806 1830 9077 N19W47 1F 210 2014 2027 2032 9087 S11E36 M2.4 1N 7100 280 II 2337 0004 0015 9077 N17W38 M1.4 2F
B. Proton Events
THE GREATER THAN 10 MEV PROTON FLUX BEGAN THE
PERIOD AT APPROXIMATELY 180 PFU AND BY ISSUE TIME WERE NEAR 50 PFU.
THE POLAR CAP ABSORPTION EVENT ENDED AT 17/1943Z. THE FORBUSH
DECREASE REMAINED IN PROGRESS.
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS QUIET TO
UNSETTLED. SOLAR WIND VELOCITY DECLINED DURING THE PERIOD FROM
APPROXIMATELY 750 TO 600 KM/S.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 228 SSN 335 AFR/AP 008/009 X-RAY BACKGROUND C2.3 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 4.5E+07 GT 10 MEV 8.0E+06 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 1.70E+06 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 2 3 2 3 2 1 2 2 PLANETARY 3 3 2 3 2 2 2 2
F. Comments
None
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