Viewing archive of Tuesday, 16 January 2001

Solar activity 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.
Report of Solar-Geophysical Activity 2001 Jan 16 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 016 Issued at 2200Z on 16 Jan 2001

IA. Analysis of Solar Active Regions and Activity from 15-2100Z to 16-2100Z

Solar activity was low. Region 9306 (N11W53) produced a C2/Sf X-ray event at 16/0611Z. Otherwise, only a few minor optically uncorrelated events occurred. While Region 9306 is now classified as an Fki beta-gamma sunpot group, an overall decrease in white light area and the number of spots was observed since yesterday. New Region 9312 (N08E60) was numbered.
IB. Solar Activity Forecast
Solar activity is expected to be predominately low. Region 9306 continues to have the capability to produce an isolated M-class event.
IIA. Geophysical Activity Summary 15-2100Z to 16-2100Z
The geomagnetic field was quiet to unsettled.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be quiet to unsettled.
III. Event Probabilities 17 Jan to 19 Jan
Class M50%50%30%
Class X05%05%01%
Proton05%05%05%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       16 Jan 162
  Predicted   17 Jan-19 Jan  160/155/150
  90 Day Mean        16 Jan 175
V. Geomagnetic A Indices
  Observed Afr/Ap 15 Jan  007/007
  Estimated     Afr/Ap 16 Jan  006/008
  Predicted    Afr/Ap 17 Jan-19 Jan  008/010-005/010-005/007
VI. Geomagnetic Activity Probabilities 17 Jan to 19 Jan
A. Middle Latitudes
Active25%20%20%
Minor storm05%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active30%25%25%
Minor storm10%10%10%
Major-severe storm01%01%01%

All times in UTC

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

Gillam, MB, Yellowknife, NT
The Disturbance Storm Time index predicts moderate storm conditions right now (-51nT)
A transequatorial coronal hole was detected in an earth-facing position on Monday, 24 March 2025

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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. 

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13:55 UTC - Coronal hole

A transequatorial coronal hole is facing Earth. Enhanced solar wind could arrive in ~3 days

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02:45 UTC - Geomagnetic activity

Active geomagnetic conditions (Kp4) Threshold Reached: 02:33 UTC

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