SpaceWeatherLive .com
Real-time auroral and solar activity

Viewing archive of Monday, 8 February 1999

Solar activity report

Previous rotation Previous day Calendar
Next day Next rotation
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 1999 Feb 08 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 039 Issued at 2200Z on 08 FEB 1999

IA. Analysis of Solar Active Regions and Activity from 07-2100Z to 08-2100Z

SOLAR ACTIVITY INCREASED TO LOW LEVELS. ISOLATED C-CLASS SUBFLARES OCCURRED. NEWLY NUMBERED REGIONS 8457 (N18E73) AND 8458 (S23E76) MARKED THE RESPECTIVE RETURNS OF OLD 8440 AND 8439. NEW REGION 8459 (S28E48) WAS ALSO ASSIGNED.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO REMAIN LOW THROUGHOUT THE PERIOD. THERE IS ALSO A SLIGHT CHANCE FOR AN ISOLATED M-CLASS FLARE.
IIA. Geophysical Activity Summary 07-2100Z to 08-2100Z
THE GEOMAGNETIC FIELD DECLINED TO MOSTLY QUIET LEVELS AT ALL LATITUDES. THE GREATER THAN 2 MEV ELECTRON FLUX AT GEO-SYNCHRONOUS ALTITUDE CONTINUED AN INCREASING TREND, BUT REMAINED AT MODERATE LEVELS.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE AT UNSETTLED TO ACTIVE LEVELS DURING 09 - 10 FEBRUARY, THEN DECLINE TO QUIET TO UNSETTLED LEVELS ON 11 FEBRUARY. THE GREATER THAN 2 MEV ELECTRON FLUX AT GEO-SYNCHRONOUS ALTITUDE IS EXPECTED TO BE AT MODERATE TO HIGH LEVELS.
III. Event Probabilities 09 FEB to 11 FEB
Class M10%10%10%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       08 FEB 125
  Predicted   09 FEB-11 FEB  135/145/150
  90 Day Mean        08 FEB 140
V. Geomagnetic A Indices
OBSERVED AFR/AP 07 FEB  009/012
ESTIMATED AFR/AP 08 FEB  005/006
PREDICTED AFR/AP 09 FEB-11 FEB  015/011-015/011-012/011
VI. Geomagnetic Activity Probabilities 09 FEB to 11 FEB
A. Middle Latitudes
Active30%30%25%
Minor storm10%10%05%
Major-severe storm01%01%01%
B. High Latitudes
Active35%35%30%
Minor storm15%15%10%
Major-severe storm01%01%01%

All times in UTC

Previous rotation Previous day Calendar
Next day Next rotation

<< Go to daily overview page

Back to top

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

Whitehorse, YT
Fairbanks, AK

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 solar wind speed is currently high (749.1 km/sec.)
The direction of the interplanetary magnetic field is slightly South (-6.07nT).
The Disturbance Storm Time index predicts moderate storm conditions right now (-51nT)

Latest news

Latest forum messages

Unspecified geomagnetic activity 2221Incoming & Unnumbered Active Regions 1660AR4048 114New satellites - Proba-3, PUNCH, SWFO-L1, GOES-U/19 36Filaments and prominences 750
More topics

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

04:15 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 04:05 UTC

alert

03:15 UTC - Geomagnetic activity

Moderate G2 geomagnetic storm (Kp6) Threshold Reached: 02:59 UTC

alert

01:00 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 00:51 UTC

alert

Friday, 4 April 2025
23:30 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 23:17 UTC

alert

21:03 UTC - Hemispheric Power Index

The OVATION model predicts the Hemispheric Power Index to reach 75GW at 21:49 UTC

Get instant alerts!

Space weather facts

Last X-flare2025/03/28X1.1
Last M-flare2025/04/01M2.5
Last geomagnetic storm2025/04/04Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
March 2025134.2 -20.4
April 2025148 +13.8
Last 30 days130.9 -15.2

This day in history*

Solar flares
12001X1.21
22001M7.3
32001M4.52
42013M3.28
52004M2.47
DstG
11993-165G3
21968-112G3
31978-109G1
41984-108G2
51989-101G2
*since 1994

Social networks