From: LARRY KLAES (ljk4@msn.com)
Date: Tue Jul 23 2002 - 21:32:35 PDT
----- Original Message -----
From: Space Environment Center
Sent: Tuesday, July 23, 2002 5:38 PM
To: advisory-list-send@dawn.sec.noaa.gov
Subject: Space-Weather-Outlook
Official Space Weather Advisory issued by NOAA Space Environment Center
Boulder, Colorado, USA
SPACE WEATHER ADVISORY OUTLOOK #02- 30
2002 July 23 at 03:09 p.m. MDT (2002 July 23 2109 UTC)
**** SPACE WEATHER OUTLOOK ****
Summary For July 15-21
Space weather increased to strong levels. Category R3 (strong) radio
blackouts occurred on July 15 at 2:08 p.m. MDT (2002 July 15 2008 UTC),
July 18 at 1:44 a.m. MDT (2002 July 18 0744 UTC), and July 20 at 3:30
p.m. MDT (2002 July 20 2130 UTC). A category R2 (moderate) radio
blackout occurred on July 17 at 1:13 a.m. MDT (2002 July 17 0713 UTC).
These blackouts were the result of major flares from two large, complex
sunspot groups. NOAA GOES satellites detected a category S2 (moderate)
solar radiation storm during July 16 - 18 following the major flare on
July 15. A brief category S1 (minor) solar radiation storm occurred on
July 19. Brief category G1 (minor) geomagnetic storm conditions
occurred during July 20 - 21 as multiple coronal mass ejections (CME)
passed Earth. For a list of adverse system effects related to space
weather, please refer to the NOAA Space Weather Scales.
Outlook For July 24-30
Space weather is expected to range from minor to strong levels. Isolated
category R1 (minor) to R3 (strong) radio blackouts are likely. Category
G1 - G2 geomagnetic storm conditions are possible during July 24 - 25
due to an expected CME passage. Category S1 (minor) solar radiation
storms are expected during the period.
Data used to provide space weather services are contributed by NOAA,
USAF, NASA, NSF, USGS, the International Space Environment Services
and other observatories, universities, and institutions. For more
information, including email services, see SEC's Space Weather
Advisories Web site http://sec.noaa.gov/advisories or (303) 497-5127.
The NOAA Public Affairs contact is Barbara McGehan at
Barbara.McGehan@noaa.gov or (303) 497-6288.
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