Viewing archive of Sunday, 13 February 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 Feb 13 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 044 Issued at 0245Z on 13 FEB 2000 This report is compiled from data received at SWO on 12 FEBA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0351 0410 0431 8858 N26W23 M1.7 1N 340 200 II/IV
B. Proton Events
None
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD VARIED FROM
UNSETTLED TO SEVERE STORM LEVELS. BOULDER MEASURED A SUDDEN
COMMENCEMENT OF 19 NT AT 11/2353Z. MINOR TO SEVERE STORM CONDITIONS
FOLLOWED OVER THE NEXT 15 HOURS. THIS ACTIVITY IS THOUGHT TO BE THE
RESULT OF THE PASSAGE OF A CME THAT LEFT THE SUN ON 09 FEBRUARY. THE
GREATER THAN 10 MEV PROTON FLUX AT GEOSYNCHRONOUS ORBIT WAS SLIGHTLY
ENHANCED, STARTING AROUND 0600Z. THE PEAK VALUE WAS 2 PFU AT 1120Z.
D. Stratwarm
STRATWARM ALERT/SATURDAY/STRATWARM EXISTS.
INTENSE WARMING, CERNTERED OVER HUDSON STREET AT 10 HPA, CONTINUES.
TEMPERATURE GRADIENT BETWEEN 60N AND THE POLE AT 5 HPA AND ABOVE.
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 163 SSN 157 AFR/AP 053/052 X-RAY BACKGROUND C1.3 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 9.7E+06 GT 10 MEV 5.2E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 1.50E+06 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 5 5 6 7 5 4 4 2 PLANETARY 5 4 5 7 6 5 4 2
F. Comments
None
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