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| Geomagnetic and Solar Indices -- Updated May 19 2358 UTC | ||||||||||||||||||
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| Geomagnetic Indices | ||||||||||||||||||
| Station | May 18 3-hour K-indices |
A-index | May 19 3-hour K-indices |
Running A-index |
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| 00-03 | 03-06 | 06-09 | 09-12 | 12-15 | 15-18 | 18-21 | 21-24 | 00-03 | 03-06 | 06-09 | 09-12 | 12-15 | 15-18 | 18-21 | 21-24 | |||
| Fredericksburg | 4 | 5 | 3 | 2 | 2 | 2 | 2 | 2 | 16 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | * | 8 |
| Boulder | 4 | 5 | 5 | 3 | 2 | 3 | 2 | 2 | 21 | 3 | 2 | 3 | 2 | 3 | 3 | 1 | * | 10 |
| College | 5 | 6 | 4 | 5 | 3 | 2 | 2 | 2 | 30 | 3 | 2 | 5 | 4 | 5 | 6 | 2 | * | 30 |
| Planetary | 5 | 5 | 4 | 3 | 2 | 2 | 3 | 2 | 21 | 4 | 2 | 3 | 2 | 2 | 3 | 2 | * | 11 |
| Solar Radio Flux | ||||||||
| May 19 Station / CMP |
245 | 410 | 610 | 1415 | 2695 | 4995 | 8800 | 15400 |
| Learmonth / 0500 UTC | 24 | 40 | 71 | 112 | 135 | 173 | 302 | 587 |
| San Vito / 1200 UTC | 21 | 56 | * | 121 | 134 | 186 | 280 | 552 |
| Sagamore Hill / 1700 UTC | 19 | 41 | 66 | 111 | 124 | 166 | 306 | 577 |
| Palehua / 2300 UTC | 21 | 43 | 61 | 113 | 136 | 179 | 297 | 586 |
| Penticton 10.7cm (2800 MHz) | Morning 133 | Noon 135 | Afternoon 136 |
CMP = Central Meridian Passage, time of measurement near local noon
| Daily Solar Indices | |||||
| Penticton 10.7cm Solar Radio Flux (2800 MHz) | GOES X-ray | ||||
| Morning 1800 UTC | Noon 2000 UTC | Afternoon 2200 UTC | 90 Day Mean | background flux | |
| May 18 | 132 | 132 | 133 | 121 | B4.8 |
| SWO Sunspot Number |
Sunspot Area 10E-6 Hemis. |
New Regions | Spotted Regions | X-ray Events C / M / X |
Optical Flares S / 1 / 2 / 3 / 4 |
Radio Bursts 10 cm tenflares |
Radio Sweeps Type II / IV |
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| May 19 | 113 | 590 | 0 | 6 | 9/0/0 | 12/1/0/0/0 | 0 | 0/0 |
| May 18 | 146 | 700 | 0 | 9 | 5/0/0 | 10/0/0/0/0 | 0 | 0/0 |
| Related online data | |||
| Daily Geomagnetic Indices | last 30 days | current quarter | since 1994 |
| Daily Solar Indices | last 30 days | current quarter | since 1994 |
| Available A and K indices | last 2 days | last 7 days | last 2 years |
| Noon Solar Radio Flux Values | last 2 days | last 7 days | last 45 days |
| Solar Event Reports | Today or Yesterday | last 60 days | last 3 years |
| Radio Burst Event Reports | last 45 days | ||
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