NOAA Logo

NWS Logo

Organizations

Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Friday, April 11, 2025 00:38:57 UTC

Main menu

NOAA Scales

minimize icon
Space Weather Conditions
on NOAA Scales
24-Hour Observed Maximums
R
none
S
none
G
none
Latest Observed
R
none
S
none
G
none
Predicted 2025-04-11 UTC
R1-R2 45%
R3-R5 5%
S1 or greater 1%
G1
minor
Predicted 2025-04-12 UTC
R1-R2 45%
R3-R5 5%
S1 or greater 1%
G
none
Predicted 2025-04-13 UTC
R1-R2 45%
R3-R5 5%
S1 or greater 1%
G
none
1
2
3
PrevNext
maximize icon
R
none
S
none
G
none
Current Space Weather Conditions
on NOAA Scales
R1 (Minor) Radio Blackout Impacts
close
HF Radio: Weak or minor degradation of HF radio communication on sunlit side, occasional loss of radio contact.
Navigation: Low-frequency navigation signals degraded for brief intervals.
More about the NOAA Space Weather Scales

Space Weather Summary

  • Solar Wind Speed: 416 km/sec
  • Solar Wind Magnetic Fields: Bt 7 nT, Bz -6 nT
  • Noon 10.7cm Radio Flux: 153 sfu

Electric Power Community Dashboard

Geoelectric Field Models - US CANADA 1D
GEOELECTRIC US-Canada 1D animation
Geoelectric Field Models - EMPIRICAL EMTF 3D MODEL
GEOELECTRIC EMPIRICAL EMTF - 3D MODEL animation
Created with Highcharts 8.0.4Universal TimeKp indexChart context menuEstimated Planetary K index (3 hour data)Apr 9Apr 1003:0006:0009:0012:0015:0018:0021:0003:0006:0009:0012:0015:0018:0021:00Apr 1103:0006:0009:0012:0015:0018:0021:00Apr 1201234567890123456789Space Weather Prediction CenterBegin: Wed, 09 Apr 2025 00:00:00 GMT
Updated Time: 2025-04-10T21:00:00.000Z
NOAA Scales Geomagnetic Storms
Kp < 5 Kp = 5 (G1) Kp = 6 (G2) Kp = 7 (G3) Kp = 8, 9- (G4) Kp = 9o (G5)

WSA-Enlil Solar Wind Prediction

ENLIL Image