116
FXXX10 KWNP 011231
DAYTDF

:Product: 3-Day Forecast
:Issued: 2025 Jul 01 1230 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# http://www.swpc.noaa.gov/wwire.html
#
#             3-Day Forecast
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Jul 01-Jul 03 2025 is 5.33 (NOAA Scale
G1).

NOAA Kp index breakdown Jul 01-Jul 03 2025

             Jul 01       Jul 02       Jul 03
00-03UT       3.33         5.00 (G1)    4.67 (G1)
03-06UT       2.33         5.33 (G1)    4.33
06-09UT       1.67         4.67 (G1)    3.33
09-12UT       1.00         4.00         2.67
12-15UT       1.67         3.00         2.33
15-18UT       2.00         2.67         2.67
18-21UT       3.33         3.67         3.00
21-00UT       3.67         4.67 (G1)    3.67

Rationale: G1 (Minor) geomagnetic storming is likely on 02-03 Jul due to
the arrival of the 28 Jun CME.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Jul 01-Jul 03 2025

              Jul 01  Jul 02  Jul 03
S1 or greater    5%      5%      5%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Jul 01-Jul 03 2025

              Jul 01        Jul 02        Jul 03
R1-R2           25%           25%           25%
R3 or greater    5%            5%            5%

Rationale: A chance for R1-R2 (Minor-Moderate) radio blackouts due to
isolated M-class flare activity will persist through 03 July.