Viewing archive of Friday, 20 January 2012
Geophysical report
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 020 Issued at 0245Z on 20 Jan 2012 This report is compiled from data received at SWO on 19 JanA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0034 0034 0034 160 0041 0042 0042 370 0215 0216 0216 190 0319 0319 0319 180 0336 0336 0336 160 0405 0405 0405 140 1154 1154 1154 120 1200 1200 1200 130 1241 1250 1300 1396 N24W55 C3.2 Sf II 1344 1605 1750 1402 N32E22 M3.2 Sf 1440 1441 1446 81 100 IV 1457 1459 1516 210 1746 2359 IV 1933 1945 II 2213 2359 IV
B. Proton Events
C. Geomagnetic Activity Summary
D. Stratwarm
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 157 SSN 117 Afr/Ap 001/003 X-ray Background B5.9 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 3.4e+05 GT 10 MeV 1.4e+04 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W74 degrees) Daily Electron Fluence GT 2 MeV 1.90e+06 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W74 degrees) 3 Hour K-indices Boulder 0 1 0 1 0 2 1 1 Planetary 1 1 0 1 1 1 0 1
F. Comments
None
All times in UTC
Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future
Gillam, MB, Whitehorse, YT, Yellowknife, NTFairbanks, AK, Juneau, AK, Utqiagvik, AK
Latest news
Coronal hole faces Earth
Strong G3 geomagnetic storm watch for 23 March
Coronal hole faces Earth
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Latest alerts
Monday, 24 March 2025
Coronal hole faces Earth
The anticipated strong G3 geomagnetic storm watch never materialized as the coronal mass ejection that was supposed to arrive early yesterday didn't arrive until today just past midnight UTC. The impact was very lackluster with the Bt (total strength of the IMF) increasing to a moderate 15nT at best and the solar wind speed reaching just 420km/s. A far cry from the anticipated 700 to 800km/s. That once again goes to show how hard it is to forecast space weather events and any resulting geomagnetic conditions. We remain under the influence of the CME and high latitude sky watchers should remain alert for some nice aurora displays but middle latitude sky watchers will probably have to wait for the next opportunity.
13:55 UTC - Coronal hole
A transequatorial coronal hole is facing Earth. Enhanced solar wind could arrive in ~3 days
02:45 UTC - Geomagnetic activity
Active geomagnetic conditions (Kp4) Threshold Reached: 02:33 UTC
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