Viewing archive of tisdag, 1 april 1997

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 1997 Apr 01 2200 UTC
Skapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com

USAF/NOAA rapport för sol- och geofysisk aktivitet

SDF Nummer 091 publicerat klockan 2200Z på 01 APR 1997

IA. Analys av solfläcksgrupper och solaktivitet från 31-2100Z till 01-2100Z

SOLAR ACTIVITY WAS MODERATE. REGION 8026 (S25E07), A 13 SPOT 'CAO' GROUP, GENERATED A SINGLE M1/1B FLARE AT 01/1348, WHICH WAS PRECEEDED BY THREE C-CLASS EVENTS. THE REGION HAD BEEN SURGING PRIOR TO, BUT HAD STOPPED BEFORE THE ONSET OF THE M1 EVENT. AN ASSOCIATED HIGH SPEED DARK SURGE ACCOMPANIED THE M1 FLARE. ALL FOUR FLARES OCCURRED NEAR THE SMALL OPPOSITE POLARITY FIELD EAST OF THE SOUTHERNMOST PENUMBRA, WHICH SUPPORTS THE MT. WILSON SOLAR OBSERVATORY'S MAGNETIC CLASSIFICATION OF THIS REGION AS A BETA-GAMMA-DELTA. NUMEROUS RADIO BURSTS AT VARIOUS FREQUENCIES WERE OBSERVED BEORE AND AFTER THE FLARE ACTIVITY. IN ADDITION, TWO FILAMENTS DISSAPPEARED OVERNIGHT FROM REGION 8026, WITH THE LARGER OF THE TWO (7 DEGREES) HAVING BECOME HIGHLY ACTIVE PRIOR TO DISAPPEARING.
IB. Prognos för solaktivitet
SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW TO LOW, WITH A CONTINUED CHANCE FOR ISOLATED M-CLASS EVENTS FOR THE NEXT THREE DAYS.
IIA. Sammanfattning av geofysisk aktivitet 31-2100Z till 01-2100Z
THE GEOMAGNETIC FIELD WAS MOSTLY UNSETTLED FOR THE FIRST HALF OF THE REPORTING PERIOD, WITH A SINGLE PERIOD OF ACTIVE CONDITIONS RECORDED AT FREDRICKSBURG DURING THE INTERVAL 01/0300-0600Z, AND THEN QUIET FOR THE SECOND HALF OF THE DAY. THE GREATER THAN 2 MEV ELECTRONS WERE IN THE MODERATE TO HIGH RANGE.
IIB. Prognos för geofysisk aktivitet
THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED FOR THE NEXT THREE DAYS, WITH A CHANCE FOR ISOLATED PERIODS OF ACTIVE CONDITIONS.
III. Chans för solutbrott från 02 APR till 04 APR
M-klass20%15%10%
X-klass01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observerad       01 APR 076
  Prognoserat   02 APR-04 APR  076/077/078
  90 Day Mean        01 APR 074
V. Geomagnetiskt A-index
OBSERVED AFR/AP 31 MAR  007/005
ESTIMATED AFR/AP 01 APR  012/010
PREDICTED AFR/AP 02 APR-04 APR  010/010-010/010-010/006
VI. Chanser för geomagnetisk aktivitet från 02 APR till 04 APR
A. Medelhöga breddgrader
Aktivt20%20%20%
Små stormförhållanden10%10%10%
Svåra stormförhållanden05%05%05%
B. Höga breddgrader
Aktivt25%25%25%
Små stormförhållanden15%15%15%
Svåra stormförhållanden05%05%05%

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