Routine Space Environment Product (Daily)
Issued by NWS

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000
FXXX10 KWNP 240033
DAYTDF

:Product: 3-Day Forecast
:Issued: 2017 Apr 24 0031 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 6 (NOAA Scale
G2).
The greatest expected 3 hr Kp for Apr 24-Apr 26 2017 is 5 (NOAA Scale
G1).

NOAA Kp index breakdown Apr 24-Apr 26 2017

            Apr 24     Apr 25     Apr 26
00-03UT        5 (G1)     5 (G1)     5 (G1)
03-06UT        4          4          4
06-09UT        4          4          4
09-12UT        4          3          3
12-15UT        4          3          3
15-18UT        4          3          3
18-21UT        4          3          3
21-00UT        4          4          4

Rationale: G1 (Minor) geomagnetic storms are expected on 24 Apr and
likely on 25-26 Apr due to the continued influence of a coronal hole
high speed stream.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-13 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Apr 24-Apr 26 2017

              Apr 24  Apr 25  Apr 26
S1 or greater    1%      1%      1%

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 Apr 24-Apr 26 2017

              Apr 24        Apr 25        Apr 26
R1-R2            1%            1%            1%
R3 or greater    1%            1%            1%

Rationale: No R1 (Minor) or greater radio blackouts are expected.  No
significant active region flare activity is forecast.


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