Viewing archive of Sunday, 13 February 2000

Geophysical report

Solar and Geophysical Activity Summary 2000 Feb 13 0245 UTC
Prepared 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 FEB
A. 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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