Viewing archive of måndag, 27 april 1998
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 1998 Apr 27 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 117 publicerat klockan 2200Z på 27 APR 1998IA. Analys av solfläcksgrupper och solaktivitet från 26-2100Z till 27-2100Z SOLAR ACTIVITY BECAME HIGH. REGION 8210 (S17E43)
PRODUCED AN X1/2B AT 27/0920Z WITH A STRONG TYPE IV AND 950 SFU
BURST AT 2695 MHZ. THIS MODERATE DURATION EVENT WAS ACCOMPANIED BY A
CORONAL MORETON WAVE AND HALO CORONAL MASS EJECTION. REGION 8210
REMAINED A SMALL-MODERATE SIZE C-CLASS GROUP. HOWEVER, A MAGNETIC
DELTA CONFIGURATION FORMED IN THE NORTHERN PORTION OF THE REGION AND
LOCALIZED MAGNETIC GRADIENTS WERE HIGH. SMALL REGIONS WERE VISIBLE
NEARING THE NORTHEAST AND SOUTHEAST LIMBS.
IB. Prognos för solaktivitet
SOLAR ACTIVITY SHOULD BE LOW TO
OCCASIONALLY MODERATE WITH REGION 8210 THE PROBABLE SOURCE REGION.
OBVIOUSLY, X-CLASS EVENTS ARE POSSIBLE BUT NOT CONSIDERED LIKELY DUE
TO THE SMALL AREAL COVERAGE OF THIS REGION IN WHITE LIGHT. CONTINUED
INCREASES IN MAGNETIC COMPLEXITY COULD MODIFY THIS FORECAST.
IIA. Sammanfattning av geofysisk aktivitet 26-2100Z till 27-2100Z
THE GEOMAGNETIC FIELD RANGED FROM UNSETTLED TO MINOR STORM LEVELS.
THE MOST DISTURBED PERIOD WAS FROM 27/0000-0300Z. THIS DISTURBANCE
APPEARS TO BE CAUSED BY AN EXTENSION OF THE SOUTHERN POLAR CORONAL
HOLE. ENERGETIC ELECTRON FLUXES AT GEOSYNCHRONOUS ORBIT WERE
PREDOMINANTLY HIGH.
IIB. Prognos för geofysisk aktivitet
THE GEOMAGNETIC FIELD SHOULD BE
UNSETTLED TO SLIGHTLY ACTIVE ON 28 APR AS THE END OF THE CORONAL
HOLE STREAM ROTATES PAST THE EARTH DURING THAT PERIOD. UNSETTLED TO
MINOR STORM CONDITIONS ARE PREDICTED FOR 29-30 APR IN RESPONSE TO
THE X1 FLARE AND HALO CME MENTIONED ABOVE. ISOLATED PERIODS OF MAJOR
STORMING ARE POSSIBLE AT HIGH LATITUDES. THE ARRIVAL TIME FOR THIS
DISTURBANCE IS SOMEWHAT ADVANCED FROM PREVIOUS HALO CMES DUE TO A
HIGH LAUNCH SPEED OBSERVED NEAR THE SUN.
III. Chans för solutbrott från 28 APR till 30 APR
| M-klass | 20% | 20% | 20% |
| X-klass | 15% | 15% | 15% |
| Proton | 10% | 15% | 15% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observerad 27 APR 091 Prognoserat 28 APR-30 APR 092/094/096 90 Day Mean 27 APR 104
V. Geomagnetiskt A-index
OBSERVED AFR/AP 26 APR 021/031 ESTIMATED AFR/AP 27 APR 015/020 PREDICTED AFR/AP 28 APR-30 APR 010/015-020/020-020/020
VI. Chanser för geomagnetisk aktivitet från 28 APR till 30 APR
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 20% | 30% | 35% |
| Små stormförhållanden | 10% | 20% | 25% |
| Svåra stormförhållanden | 05% | 10% | 10% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 25% | 35% | 35% |
| Små stormförhållanden | 15% | 25% | 30% |
| Svåra stormförhållanden | 05% | 15% | 15% |
Senaste nytt
måndag, 22 april 2024
Lot's of sunspots! Big chance for major flare activity?
lördag, 23 mars 2024
X1.1 solar flare with earth-directed CME
onsdag, 20 mars 2024
Sunspot region 3615, G1 watch
Senaste inläggen
Changelog/Featurelog 154What are these long and thin eruptions? 9Unspecified geomagnetic activity 947IMF - BT strength 8AR3654 1
Fler foruminläggStöd SpaceWeatherLive.com!
För att vara tillgängliga vid stora norrskensutbrott måsta vi ha kraftiga servrar som kan hantera alla besökare. Donera och stöd vårt projekt, så att vi kan finnas online även under stora stormar!
Rymdvädersfakta
| Senaste X-utbrottet | 2024/03/28 | X1.1 |
| Senaste M-utbrottet | 2024/04/25 | M1.3 |
| Senaste geomagnetiska stormen | 2024/04/26 | Kp5+ (G1) |
| Fläckfria dagar | |
|---|---|
| Senaste dag utan solfläckar | 2022/06/08 |
| Månadsvis faktiskt antal solfläckar | |
|---|---|
| mars 2024 | 104.9 -19.8 |
| Last 30 days | 136.8 +28.6 |