Просмотр архива за четверг, 6 августа 1998
Отчет о солнечной активности
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.
Отчет о солнечно-геофизической активности 1998 Aug 06 2200 UTCПодготовлено NOAA © SWPC и представлено SpaceWeatherLive.com
Совместный отчет USAF/NOAA о солнечной и геофизической активности
Количество SD 218 на уровне 2200Z 06 AUG 1998IA. Анализ активных солнечных регионов и активности от 05 - 2100Z до 06 - 2100Z SOLAR ACTIVITY WAS LOW. REGIONS 8293 (S22E22) AND 8296
(N17E58) PRODUCED MOST OF THE PERIOD'S FLARES, THE LARGEST BEING IN THE
LOW C-CLASS RANGE. THE DAY'S MOST SPECTACULAR ACTIVITY OCCURRED NEAR
N14 AT EAST LIMB WHERE A SPRAY WAS OBSERVED AT APPROXIMATELY 1605Z.
THIS EVENT MEASURED C-2 IN X-RAYS, AND INCLUDED TYPES II AND IV
SWEEP. ADDITIONAL SURGING WAS SEEN NEAR N26E90, MAKING PERHAPS TWO
NEW REGIONS COMING INTO VIEW. ONE NEW REGION, 8297 (N30E73) APPEARED
AS A SINGLE MATURE SPOT.
IB. Прогноз солнечной активности
SOLAR ACTIVITY IS EXPECTED TO BE LOW.
HOWEVER, CONTINUED DEVELOPMENT IN REGION 8293 MAY RESULT IN AN
ISOLATED M-CLASS EVENT IN THE NEXT 3 DAYS. THIS REGION NOW SHOWS A
BETA-GAMMA DELTA MAGNETIC CONFIGURATION AND MAY PRODUCE MAJOR FLARES
IF THESE GRADIENTS STRENGTHEN. IN ADDITION, EAST LIMB MAY PROVIDE
OCCASIONAL C-CLASS EVENTS.
IIA. Обзор геофизической активности от 05 - 2100Z до 06 - 2100Z
THE GEOMAGNETIC FIELD WAS AT QUIET TO STORM LEVELS THROUGHOUT THE
PERIOD. A TRANSIENT STRUCTURE WAS SEEN TO PASS ACE BEGINNING AT
APPROXIMATELY 0644Z. THE MASS EJECTION WAS CHARACTERIZED BY ENHANCED
SOUTHWARD BZ OF APPROXIMATELY -20 NT FOR A FEW HOURS TO FOLLOW. A
WEAK SUDDEN IMPULSE WAS OBSERVED IN THE EUROPEAN SECTOR AT 0736Z,
AND SEVERE STORM CONDITIONS FOLLOWED SHORTLY THEREAFTER. K INDICES
OF 8 AND 9 WERE REPORTED AT HIGH LATITUDES AND SLIGHTLY LESSER
VALUES WERE SEEN AT MIDDLE LATITUDES. THE MAIN DISTURBANCE WANED BY
1800Z TO QUIET CONDITIONS AT BOULDER. THIS CME MAY BE RELATED TO
SOLAR ACTIVITY WITH TYPES II AND IV SWEEP IN THE EARLY HOURS OF
AUGUST 1.
IIB. Прогноз геофизической активности
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE AT UNSETTLED TO MINOR STORM LEVELS FOR THE NEXT 24
HOURS AS THE CURRENT DISTURBANCE WEAKENS. EPISODES OF MINOR TO MAJOR
STORMING ARE POSSIBLE DURING LOCAL NIGHTTIME HOURS FOR THE NEXT DAY.
QUIET TO UNSETTLED CONDITIONS SHOULD END THE PERIOD.
III. Вероятность события от 07 - AUG до 09 - AUG
| M-класс | 25% | 25% | 25% |
| X-класс | 05% | 05% | 05% |
| Протон | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Радиоизлучение λ = 10,7см
Наблюдаемый 06 AUG 138 Прогнозируемый 07 AUG-09 AUG 145/150/150 среднее значение за последние 3 месяца 06 AUG 109
V. Геомагнитные индексы
OBSERVED AFR/AP 05 AUG 006/009 ESTIMATED AFR/AP 06 AUG 040/070 PREDICTED AFR/AP 07 AUG-09 AUG 015/030-005/018-005/010
VI. Вероятность геомагнитной активности с 07 - AUG до 09 - AUG
| A. Средние широты | |||
|---|---|---|---|
| Активно | 30% | 20% | 05% |
| Слабый шторм | 30% | 10% | 05% |
| Большой шторм | 10% | 01% | 01% |
| B. Высокие широты | |||
|---|---|---|---|
| Активно | 40% | 30% | 20% |
| Слабый шторм | 40% | 20% | 10% |
| Большой шторм | 15% | 05% | 01% |
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