August 24 - 28 1998

---

Access to Data and Information:
• Near Real-Time WIND Data available from NOAA
  
• Near Real-Time ACE Data available from NOAA
  
• Near Real-Time SOHO Celias MTOF Data from UMD
  
• Current UVI Auroral Image from POLAR
  
• Current VIS Auroral Image from POLAR
  
• Current PIXIE Auroral Image from POLAR
  
• Near Real-Time Magnetometer Data from CANOPUS
  
• Provisional Dst Index from WDC-C2 Kyoto
  
• Near Real-Time Magnetometer Data from IMAGE
  
• Near Real-Time Global Convection Maps from SuperDARN
  
• Access to the latest Twenty-seven days: WIND/SWE SW Plasma Data
  
• Access to online ISTP Key Parameter data for the event via CDAWeb (available with ~2-3 days delay from observations)
  
• Links to additional data and information at investigator sites
  

Sun Signatures of the Event

• Combined Culgoora/Tasmania/Australia and ISTP WIND/WAVES Image of solar Type II radio bursts
  
• Five Minute GOES Xray Flux: Aug. 26, 1998
  
• Active Region 8307, during the declining phase of the X1-B3 solar flare
  
• Movie of the Moreton type blast wave associated with this solar event from the EIT instrument at Mauna Loa Solar Observatory (observations using the helio 1 line)
  
• A calibrated Helium I (chip) image of the flare at N35 E09 from the EIT instrument at Mauna Loa Solar Observatory
  

Interplanetary Response

• Seven day image of energetic ions (NRT ACE): EPAM experiment
  
• Seven day image of energetic ions (NRT ACE): SIS experiment
  
• Seven day image of SW parameters (NRT ACE)
  
• Four day image of SW parameters (ISTP WIND/SWE-MFI)
  
• Sun to Earth drifting Type II kilometric radio bursts, 1000 to 30 KHz (observed by ISTP WIND/WAVES)
  
• Ten days Observation of MeV particles by WIND/EPACT
  

Geomagnetic Response

• Satellite Environment Plot: Aug. 26, 1998
  
• Satellite Environment Plot: Aug. 28, 1998
  
• AURORAS over US (ISTP POLAR/VIS and UVI): VIS experiment
  
• AURORAS over US (ISTP POLAR/VIS and UVI): UVI experiment
  
• POLAR/UVI movies of the Auroras in ultraviolet light (Aug. 27 and 28)

---

August 24 - 28 EVENT SUMMARY From Daniel Berdichevsky (SPOF) Aug. 24, 22 UT, X1/3B SOLAR FLARE Aug. 26, 0620 UT (SHOCK at 250 RE from Earth) Aug. 26, 22 UT to Aug. 27, 2350 UT, One whole Day of IMF South Aug. 27, 00 to 12 UT, Severe Geomagnetic Disturbances Aug. 27, Morning, Images of Auroras at Mid-Latitudes Additionally during Aug. 27, from 10:22:15 to 10:27, the ionospheric night over the Pacific becomes day-like as a consequence of an Extremely Bright Burst from SGR 1900+14, interstellar hard photons event (Peak energies of ~ 34 keV) Detailed time line August 24-26, 1998: An exercise in "space weather" prediction USDG Press Release on Aug. 26

---

Other Links of Interest:

ISTP Program Homepage
SOHO Homepage
ISTP Public Outreach and Education Page
NOAA, Today's Space Weather

---

Author:

• Daniel Berdichevsky
  

Official NASA Contact: ISTP-Project
/ NASA Home / Goddard Space Flight Center Home /
Last Updated: 03/16/00