Viewing archive of tisdag, 14 september 1999

Solaktivitetsrapport

Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Rapport för sol- och geofysisk aktivitet 1999 Sep 14 2200 UTC
Skapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com

USAF/NOAA rapport för sol- och geofysisk aktivitet

SDF Nummer 257 publicerat klockan 2200Z på 14 SEP 1999

IA. Analys av solfläcksgrupper och solaktivitet från 13-2100Z till 14-2100Z

SOLAR ACTIVITY WAS LOW. SEVERAL MINOR, MOSTLY OPTICALLY UNCORRELATED C-CLASS X-RAY EVENTS OCCURRED THROUGHOUT THE PERIOD. SMALL GROWTH WAS OBSERVED IN REGIONS 8690 (N15W34) AND 8699 (N21W11). NO SIGNIFICANT CHANGES WERE NOTED IN ANY OF THE REMAINING FOUR SUNSPOT REGIONS. AN IMPRESSIVE PROMINENCE ERUPTION/CME ON THE NW LIMB WAS OBSERVED FROM SPACE-BASED IMAGERY AT AROUND 14/0500UT.
IB. Prognos för solaktivitet
SOLAR ACTIVITY IS EXPECTED TO CONTINUE AT LOW LEVELS. REGIONS 8690, 8692 (S27W14), 8699 (N21W11), AND 8700 (N14E59), ALL HAVE POTENTIAL FOR C-CLASS X-RAY ACTIVITY AND A SMALL CHANCE FOR AN M-CLASS EVENT.
IIA. Sammanfattning av geofysisk aktivitet 13-2100Z till 14-2100Z
THE GEOMAGNETIC FIELD RANGED FROM QUIET TO MINOR STORMING. THIS ONGOING DISTURBANCE, ASSOCIATED WITH A HIGH-SPEED CORONAL HOLE WIND STREAM, CONTINUES TO PRODUCE PERIODS OF MINOR STORMING DURING LOCAL NIGHTTIME HOURS,
IIB. Prognos för geofysisk aktivitet
THE GEOMAGNETIC FIELD WILL CONTINUE AT QUIET TO ACTIVE LEVELS DURING LOCAL DAYLIGHT HOURS AND UNSETTLED TO MINOR STORM DURING LOCAL NIGHTTIME. EFFECTS FROM THE HIGH-SPEED CORONAL HOLE WIND STREAM WILL BEGIN TO DIMINISH TOMORROW; HOWEVER, WE MAY EXPERIENCE ACTIVE TO MINOR STORM CONDITIONS ON DAY TWO FROM CME'S OBSERVED DURING THE PAST TWO DAYS.
III. Chans för solutbrott från 15 SEP till 17 SEP
M-klass20%20%20%
X-klass05%05%05%
Proton05%05%05%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observerad       14 SEP 156
  Prognoserat   15 SEP-17 SEP  160/165/170
  90 Day Mean        14 SEP 164
V. Geomagnetiskt A-index
OBSERVED AFR/AP 13 SEP  023/038
ESTIMATED AFR/AP 14 SEP  022/025
PREDICTED AFR/AP 15 SEP-17 SEP  018/015-018/015-010/010
VI. Chanser för geomagnetisk aktivitet från 15 SEP till 17 SEP
A. Medelhöga breddgrader
Aktivt50%40%30%
Små stormförhållanden20%15%10%
Svåra stormförhållanden10%05%05%
B. Höga breddgrader
Aktivt60%50%40%
Små stormförhållanden30%25%20%
Svåra stormförhållanden10%10%05%

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