Viewing archive of Saturday, 12 February 2000

Geophysical report

Solar and Geophysical Activity Summary 2000 Feb 12 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 043 Issued at 0245Z on 12 FEB 2000 This report is compiled from data received at SWO on 11 FEB
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
None
B. Proton Events
None
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED UNTIL 11/0301UT WHEN A SUDDEN IMPULSE WAS OBSERVED ON THE BOULDER MAGNETOMETER. ACTIVE CONDITIONS FOLLOWED DURING THE 11/0300-0600UT PERIOD. QUIET TO UNSETTLED CONDITIONS PREVAILED FROM 11/0600Z UNTIL A SECOND SI WAS OBSERVED AT 11/2353Z. ACTIVE CONDITIONS FOLLOWED THE SECOND SHOCK. THE GREATER THAN 2 MEV ELECTRON FLUX AT GEOSYNCHRONOUS ORBIT WAS MODERATE TO HIGH.
D. Stratwarm
STRATWARM ALERT/FRIDAY/STRATWARM EXISTS. INTENSE WARMING, CENTRED OVER THE HUDSON BAY AT 10HPA, CONTINUES. TEMPERATURE GRADIENT REVERSED BETWEEN 60N AND THE POLE AT 5HPA AND ABOVE.
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 170  SSN 184  AFR/AP 013/013   X-RAY BACKGROUND B7.3
DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS)
GT 1 MEV 5.7E+06   GT 10 MEV 1.7E+04 P/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
DAILY ELECTRON FLUENCE
GT 2 MEV 4.70E+07 E/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
3 HOUR K-INDICES:
BOULDER 3 4 2 3 3 2 2 3 PLANETARY 3 4 2 3 3 3 3 3
F. Comments
  None


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