Viewing archive of Wednesday, 28 June 2000

Solar activity report

Report of Solar-Geophysical Activity 2000 Jun 28 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 180 Issued at 2200Z on 28 JUN 2000

IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z

SOLAR ACTIVITY WAS LOW. THE LARGEST X-RAY EVENT THIS PERIOD WAS A C6 FLARE, OBSERVED ON EIT IMAGERY NEAR THE SW LIMB AT 28/1219Z. A PROMINENCE ERUPTED ON THE NW LIMB NEAR NORTH 20, RESULTING IN A LARGE CME WITH TYPE II SWEEP (SHOCK SPEED 536 KM/S) AND A RATHER LONG DURATION C3 X-RAY BURST. BRIGHT SURGING WAS EVIDENT ON THE NW LIMB SEVERAL HOURS PRIOR TO THIS ERUPTION. REMAINING REGIONS WERE RELATIVELY QUIET.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW TO MODERATE. MOSTLY LOW LEVEL C-CLASS FLARES ARE LIKELY WITH AN ISOLATED CHANCE OF AN M-CLASS EVENT. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 27/2100Z TO 28/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO ACTIVE. WEAK CORONAL HOLE EFFECTS CONTINUED TODAY.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE MOSTLY QUIET TO UNSETTLED WITH ISOLATED ACTIVE PERIODS AT HIGH LATITUDES.
III. Event Probabilities 29 JUN to 01 JUL
Class M30%30%30%
Class X05%05%05%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       28 JUN 175
  Predicted   29 JUN-01 JUL  175/175/180
  90 Day Mean        28 JUN 184
V. Geomagnetic A Indices
OBSERVED AFR/AP 27 JUN  014/018
ESTIMATED AFR/AP 28 JUN  008/015
PREDICTED AFR/AP 29 JUN-01 JUL  010/010-010/010-010/008
VI. Geomagnetic Activity Probabilities 29 JUN to 01 JUL
A. Middle Latitudes
Active30%30%30%
Minor storm15%15%15%
Major-severe storm01%05%05%
B. High Latitudes
Active40%30%30%
Minor storm20%15%15%
Major-severe storm10%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!

100%

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/09/28Kp5 (G1)
Number of spotless days in 2019:214
Current stretch spotless days:16

This day in history*

Solar flares
11998M2.4
22014M1.6
32001C8.5
42013C8.4
52014C6.7
ApG
1199532G3
2199627G1
3200325G1
4201519G1
5201415
*since 1994

Social networks