Viewing archive of Friday, 1 September 2000

Solar activity report

Report of Solar-Geophysical Activity 2000 Sep 01 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 245 Issued at 2200Z on 01 SEP 2000

IA. Analysis of Solar Active Regions and Activity from 31-2100Z to 01-2100Z

SOLAR ACTIVITY WAS LOW. REGION 9140 (N11W67) PRODUCED TODAY'S LARGEST EVENT, A C9/1N AT 1820Z WHICH WAS ACCOMPANIED BY A TYPE II SWEEP. AN ASSOCIATED CME WAS OBSERVED OVER THE SOUTHWEST LIMB IN THE LASCO C2 FIELD OF VIEW, BEGINNING AT 1854Z. REGION 9140 APPEARS TO BE DECLINING. REGION 9143 (S18W32) ALSO SEEMS TO BE ON THE DECLINE, BUT DID MANAGE TO PRODUCE A C1/SF AT 0606Z. REGION 9149 (N14E18), THE LARGEST GROUP ON THE DISK, CONTINUES TO GROW SLOWLY, BUT REMAINS VERY STABLE. TWO NEW, SMALL ACTIVE REGIONS WERE ASSIGNED DURING THE PAST 24 HOURS: 9153 (S33E16) AND 9154 (S21E44).
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE MOSTLY LOW, BUT THERE CONTINUES TO BE A SLIGHT-TO-FAIR CHANCE FOR AN ISOLATED M-CLASS EVENT DURING THE NEXT THREE DAYS. IIA. GEOPHYSICAL ACTIVITY SUMMARY 31/2100Z TO 01/2100Z: THE GEOMAGNETIC FIELD WAS UNSETTLED TO ACTIVE. THE ENHANCED ACTIVITY LEVELS CONTINUE AS A CONSEQUENCE OF THE ONGOING, BUT WEAKENING HIGH-SPEED CORONAL HOLE SOLAR WIND STREAM. THE GREATER THAN 2 MEV ELECTRON FLUX LEVELS AT GEOSYNCHRONOUS ALTITUDE CONTINUE TO BE HIGH.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE MOSTLY UNSETTLED DURING THE NEXT 24 HOURS, ALTHOUGH THERE IS A CHANCE FOR AN ISOLATED ACTIVE PERIOD. MOSTLY UNSETTLED CONDITIONS SHOULD PREVAIL DURING THE SECOND AND THIRD DAYS OF THE FORECAST PERIOD.
III. Event Probabilities 02 SEP to 04 SEP
Class M30%30%30%
Class X05%05%05%
Proton05%05%05%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       01 SEP 158
  Predicted   02 SEP-04 SEP  155/155/155
  90 Day Mean        01 SEP 181
V. Geomagnetic A Indices
OBSERVED AFR/AP 31 AUG  012/015
ESTIMATED AFR/AP 01 SEP  015/018
PREDICTED AFR/AP 02 SEP-04 SEP  012/012-010/010-010/010
VI. Geomagnetic Activity Probabilities 02 SEP to 04 SEP
A. Middle Latitudes
Active35%30%25%
Minor storm15%15%10%
Major-severe storm05%05%05%
B. High Latitudes
Active40%30%20%
Minor storm15%15%10%
Major-severe storm05%05%05%

<< Go to daily overview page

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!

11%

Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2020/02/19Kp5 (G1)
Number of spotless days in 2020:39
Current stretch spotless days:25

This day in history*

Solar flares
12004X1.1
22004M5.7
32014M1.1
42000M1.0
52002C9.6
ApG
1200016
2199616
3200315
4199715
5199515
*since 1994

Social networks