Viewing archive of Sunday, 23 August 1998
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 1998 Aug 23 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 235 Issued at 0245Z on 23 AUG 1998 This report is compiled from data received at SWO on 22 AUGA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0000 0010 0140 8307 N42E51 2B II/IV 1304 1307 1310 8307 N30E45 C1.4 SF 440 1414 1414 1414 100 1503 1506 1509 8307 N30E44 C1.9 SF 1100 17
B. Proton Events
None
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FILED WAS
PREDOMINANTLY QUIET EARLY IN THE PERIOD. A DISTURBANCE OCCURRED
BETWEEN 22/0600UT TO APPROXIMATELY 22/1300UT. ACTIVE TO MAJOR STORM
CONDITIONS WERE OBSERVED DURING THAT TIME. SOME HIGH LATITUDE
SENSORS RECORDED PERIODS OF SEVERE STORMING. THE FIELD WAS UNSETTLED
TO SLIGHTLY ACTIVE FOR THE REMAINDER OF THE PERIOD. SOLAR WIND DATA
DURING THE DISTURBANCE SHOWED A LOW SPEED. MODERATELY HIGH DENSITY
FLOW IN THE VICINITY OF THE EARTH. THESE SOLAR WIND CONDITIONS ARE
NOT CHARACTERISTIC OF CORONAL HOLE RELATED STREAMS. HOWEVER, AT THE
END OF THE PERIOD, SOLAR WIND VELOCITY WAS INCREASING AND DENSITY
DECREASING. THE GREATER THAT 10 MEV PROTON FLUXES HAVE BEEN SLIGHTLY
ELEVATED ABOVE BACKGROUND BUT BELOW THRESHOLD SINCE EARLY ON 20 AUG.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 133 SSN 102 AFR/AP 013/023 X-RAY BACKGROUND C1.6 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 1.3E+06 GT 10 MEV 5.6E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 2.70E+05 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 1 2 4 5 3 3 3 3 PLANETARY 2 2 4 6 4 3 3 3
F. Comments
None
All times in UTC
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