Viewing archive of Saturday, 12 August 2000

Solar activity report

Report of Solar-Geophysical Activity 2000 Aug 12 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 225 Issued at 2200Z on 12 AUG 2000

IA. Analysis of Solar Active Regions and Activity from 11-2100Z to 12-2100Z

SOLAR ACTIVITY WAS MODERATE. AN M1 XRAY FLARE AT 0956Z, SEEN BY SOHO EIT TO BE JUST BEYOND THE SOUTHWEST LIMB, WAS THE LARGEST EVENT OF THE DAY. NUMEROUS C-CLASS FLARES OCCURRED, WITH REGIONS 9114 (N10W58) AND 9125 (N25E42) CONTRIBUTING THE MAJORITY. TWO NEW REGIONS WERE NUMBERED: 9128 (N11E61) AND 9129 (S05E72). REGION 9125 GREW SUBSTANTIALLY DURING THE PERIOD AS IT PRODUCED FREQUENT FLARES.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW TO MODERATE. IIA. GEOPHYSICAL ACTIVITY SUMMARY 11/2100Z TO 12/2100Z: THE GEOMAGNETIC FIELD REMAINED AT ACTIVE TO SEVERE STORM LEVELS. THE STRONGEST DISTURBANCES OCCURRED DURING LOCAL NIGHTTIME HOURS, AS ENHANCED SOLAR WIND CONDITIONS CONTINUED TO DRIVE THE ACTIVITY. THE IMF IS STILL SOUTHWARD WITH A MAGNITUDE OF 10 NT.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE AT MINOR TO MAJOR STORM LEVELS FOR THE NEXT 24 HOURS. THE CURRENT STORM SHOULD SUBSIDE OVER TIME, YIELDING TO MORE NORMAL CONDITIONS BY THE PERIOD'S END. EXPECT LOCAL NIGHTTIME HOURS TO BE THE MOST AFFECTED.
III. Event Probabilities 13 AUG to 15 AUG
Class M30%30%30%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       12 AUG 189
  Predicted   13 AUG-15 AUG  195/200/205
  90 Day Mean        12 AUG 190
V. Geomagnetic A Indices
OBSERVED AFR/AP 11 AUG  039/060
ESTIMATED AFR/AP 12 AUG  050/120
PREDICTED AFR/AP 13 AUG-15 AUG  030/060-020/030-015/030
VI. Geomagnetic Activity Probabilities 13 AUG to 15 AUG
A. Middle Latitudes
Active20%30%50%
Minor storm30%50%20%
Major-severe storm40%15%10%
B. High Latitudes
Active10%20%40%
Minor storm20%30%30%
Major-severe storm60%40%20%

<< 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 2019:213
Current stretch spotless days:15

This day in history*

Solar flares
12015M1.5
22013M1.2
32001M1.1
42015M1.1
51998C9.1
ApG
1200332G2
2199921G1
3201620
4200514
5200213
*since 1994

Social networks