Viewing archive of Monday, 19 May 1997
Solar activity report
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.
Report of Solar-Geophysical Activity 1997 May 19 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 139 Issued at 2200Z on 19 MAY 1997IA. Analysis of Solar Active Regions and Activity from 18-2100Z to 19-2100Z SOLAR ACTIVITY WAS VERY LOW. THERE WAS NO SIGNIFICANT
ACTIVITY. NEW REGIONS 8043 (N28W40), A GROWING BXO SPOT GROUP, AND
8044 (S35E77), AN HAX SPOT JUST COMING ONTO THE VISIBLE DISK, WERE
NUMBERED TODAY. REGION 8040 (N05E13) CONTINUES TO EXHIBIT SLOW
GROWTH.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO REMAIN
VERY LOW FOR THE NEXT 24 HOURS. ISOLATED C-CLASS FLARE ACTIVITY IS
POSSIBLE FROM REGIONS 8040, 8043 AND 8044 AS THEY CONTINUE TO
DEVELOP.
IIA. Geophysical Activity Summary 18-2100Z to 19-2100Z
THE GEOMAGNETIC FIELD WAS QUIET.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO REMAIN QUIET FOR THE ENTIRE FORECAST PERIOD.
III. Event Probabilities 20 MAY to 22 MAY
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 19 MAY 074 Predicted 20 MAY-22 MAY 074/074/074 90 Day Mean 19 MAY 074
V. Geomagnetic A Indices
OBSERVED AFR/AP 18 MAY 007/006 ESTIMATED AFR/AP 19 MAY 004/008 PREDICTED AFR/AP 20 MAY-22 MAY 005/008-005/008-005/008
VI. Geomagnetic Activity Probabilities 20 MAY to 22 MAY
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 05% |
| Minor storm | 05% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
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