Viewing archive of Tuesday, 16 October 2007

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 2007 Oct 16 2203 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 289 Issued at 2200Z on 16 Oct 2007

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

Solar activity was very low.
IB. Solar Activity Forecast
Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 15-2100Z to 16-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be quiet to unsettled with isolated periods of active conditions due to the effects from a recurrent coronal hole.
III. Event Probabilities 17 Oct to 19 Oct
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       16 Oct 067
  Predicted   17 Oct-19 Oct  067/067/067
  90 Day Mean        16 Oct 068
V. Geomagnetic A Indices
  Observed Afr/Ap 15 Oct  001/002
  Estimated     Afr/Ap 16 Oct  005/005
  Predicted    Afr/Ap 17 Oct-19 Oct  008/010-008/010-010/012
VI. Geomagnetic Activity Probabilities 17 Oct to 19 Oct
A. Middle Latitudes
Active10%10%15%
Minor storm05%05%10%
Major-severe storm01%01%05%
B. High Latitudes
Active15%15%20%
Minor storm10%10%15%
Major-severe storm05%05%10%

All times in UTC

<< Go to daily overview page

Active geomagnetic conditions

Observed Kp: 4
Threshold reached: 07:09 UTC

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

Whitehorse, YT

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

Edmonton, AB, Gillam, MB, Saskatoon, SK, Yellowknife, NT
Anchorage, AK, Juneau, AK
The strength of the interplanetary magnetic field is moderate (12.16nT), the direction is slightly South (-2.56nT).

Latest news

Support SpaceWeatherLive.com!

A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!

Donate SpaceWeatherLive Pro
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

07:27 UTC - Hemispheric Power Index

The OVATION model predicts the Hemispheric Power Index to reach 50GW at 08:15 UTC


07:15 UTC - Geomagnetic activity

Active geomagnetic conditions (Kp4) Threshold Reached: 07:03 UTC

alert


06:27 UTC - Coronal mass ejection arrival

CME impact detected - Current Solar Wind Speed 644km/sec - IMF: Bt (strength): 15nT & Bz: 0nT (South).

alert


Tuesday, 22 April 2025
11:09 UTC - Solar flare

Moderate M1.35 flare

alert


10:39 UTC - Radio Blackout

Minor R1 radio blackout in progress (≥M1 - current: M1.03)


Get instant alerts!

Space weather facts

Last X-flare2025/03/28X1.1
Last M-flare2025/04/22M1.3
Last geomagnetic storm2025/04/21Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
March 2025134.2 -20.4
April 2025121.5 -12.7
Last 30 days114.6 -22.2

This day in history*

Solar flares
12003M4.84
22001M4.48
32001M3.35
42001M3.06
52001M2.7
DstG
12023-213G4
21960-171G3
32012-120G3
41990-106G2
51959-92G1
*since 1994

Social networks