Viewing archive of Tuesday, 21 December 2021

Geophysical report

Solar and Geophysical Activity Summary 2021 Dec 21 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 355 Issued at 0245Z on 21 Dec 2021 This report is compiled from data received at SWO on 20 Dec
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 1112 1136 1155  2908 S22W05 M1.8  1n 240           II              
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was quiet to active
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 123  SSN 115  Afr/Ap 013/011   X-ray Background B6.8
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 2.0e+05   GT 10 MeV 4.4e+04 p/(cm2-ster-day)
(GOES-16 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 1.80e+06 e/(cm2-ster-day)
(GOES-16 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 4 3 2 4 3 3 2 3 Planetary 3 3 2 3 2 3 1 2 
F. Comments
  None

All times in UTC

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Active geomagnetic conditions

Observed Kp: 4
Threshold reached: 17:46 UTC

Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Oulu, Rovaniemi, Kuopio
Arkhangelsk, Vorkuta
Luleå, Sundsvall, Umeå
The Disturbance Storm Time index predicts moderate storm conditions right now (-51nT)
The maximum X-ray flux of the past two hours is:
C5.56

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Latest alerts

18:00 UTC - Geomagnetic activity

Active geomagnetic conditions (Kp4) Threshold Reached: 17:46 UTC

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15:30 UTC - Solar flare

Moderate M1.36 flare

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15:15 UTC - Radio Blackout

Minor R1 radio blackout in progress (≥M1 - current: M1.36)


13:00 UTC - Solar flare

Moderate M2.36 flare

alert


12:39 UTC - Radio Blackout

Minor R1 radio blackout in progress (≥M1 - current: M1.18)


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