NOAA / Space Weather Prediction Center

SWPC Space Weather Alerts
Home Alerts Archive Help

Geomagnetic and Solar Indices -- Updated Sep 02 1853 UTC
Geomagnetic Indices
Station September 01
3-hour K-indices
A-index September 02
3-hour K-indices
Running
A-index
  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 3 3 3 3 3 2 2 2 12 2 3 3 2 3 2 * * 10
Boulder 3 4 3 4 3 3 2 3 17 2 3 3 2 3 4 * * 14
College 3 3 3 6 5 4 2 2 27 2 2 3 4 5 4 * * 18
Planetary 3 3 3 3 3 2 2 3 11 2 3 2 2 3 2 * * 10

Solar Radio Flux
Sep 02
Station / CMP
245 410 610 1415 2695 4995 8800 15400
Learmonth / 0500 UTC 37 45 66 157 126 166 287 545
San Vito / 1200 UTC * 39 * 107 129 146 208 571
Sagamore Hill / 1700 UTC 24 42 65 101 127 175 286 557
Palehua / 2300 UTC * * * * * * * *
Penticton 10.7cm (2800 MHz) Morning     133 Noon     * Afternoon     *

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
Sep 01 123 127 126 129 B4.5

  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
Sep 02 105 650 1 6 4/0/0 7/0/0/0/0 0 0/2
Sep 01 94 640 0 5 4/0/0 7/0/0/0/0 0 2/1

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    

This page updates automatically every 5 minutes.

Return to Space Weather Alerts