Space Weather Observations, Alerts, and Forecast

 Space Weather Observations, Alerts, and Forecast


( Latest Alert ) - Issue Time: 2020 Mar 31 1755 UTC - Read More
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Geomagnetic Field 24-hr max Current Geomagnetic Field
Kp=3 - Quiet
Kp=2 - Quiet
Solar X-rays Alert 24-hr max Solar X-rays Alert 2-hr max
A8.43 - Normal
A7.72 - Normal
Solar X-rays Last Event max Current Solar X-rays Alert
Standby - New Event
A0.10 - Normal
Current Solar Wind Density Current Solar Wind Speed
6.77 protons/cm3
449km/s Slightly Elevated
Strength of the IMF (Bt) PRI >10MeV Solar P. 24hr max
3.35 (Bt) - Normal
Missing Data




  Solar activity report




There's something on the wing Solar Flares, Sun spots
Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 91 Issued at 2200Z on 31 Mar 2020
IA. Analysis of Solar Active Regions and Activity from 30/2100Z to 31/2100Z:
Solar activity has been at very low levels for the past 24 hours. There are currently 1 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low on days one, two, and three (01 Apr, 02 Apr, 03 Apr).
IIA. Geophysical Activity Summary 30/2100Z to 31/2100Z
The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed reached a peak of 534 km/s at 31/1355Z. Total IMF reached 7 nT at 31/0548Z. The maximum southward component of Bz reached -6 nT at 31/0525Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 391 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to active levels on day one (01 Apr) and quiet to unsettled levels on days two and three (02 Apr, 03 Apr).

3-day Solar-Geophysical Forecast


Product: 3-Day Forecast - Issued: 2020 Apr 01 0030 UTC
Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center.

CURRENT TIME
(based on your computer's time):   UTC..
Local

Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 4 (below NOAA Scale levels). The greatest expected 3 hr Kp for Apr 01-Apr 03 2020 is 4 (below NOAA Scale levels).

NOAA Kp index breakdown Apr 01 to Apr 03 2020
Apr 01 Apr 02 Apr 03
Forecast High  
4
3
3
00-03UT 4 3 2
03-06UT 3 2 3
06-09UT 3 2 2
09-12UT 2 2 2
12-15UT 2 1 1
15-18UT 3 2 2
18-21UT 3 2 3
21-00UT 2 3 2
Past 24 Hour Planetary Kp Now
3
2
2
2
2
3
2
1
Geomagnetic Activity Probabilities For - Apr 1 to Apr 03
Middle Latitudes 0-24 hr 24-48 hr 48-72 hr
Active 30% 20% 15%
Minor Storm 10% 5% 5%
Major-severe storm 1% 1% 1%
High Latitudes 0-24 hr 24-48 hr 48-72 hr
Active 15% 15% 20%
Minor Storm 30% 25% 25%
Major-severe storm 40% 30% 20%

Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No significant transient or recurrent solar wind features are forecast.

Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-16 over the past 24 hours, was below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Apr 01 to Apr 03 2020
Apr 01 Apr 02 Apr 03
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.

Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Apr 01 to Apr 03 2020
Apr 01 Apr 02 Apr 03
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.



3-day Solar-Geophysical Forecast


Product: 27 day Space Weather Outlook - Issued: 2020 Mar 30 0104 UTC

Radio Flux
10.7 cm
Planetary
A Index
Largest
Kp Index
2020 Mar 30 68 12 4
2020 Mar 31 68 12 4
2020 Apr 01 68 8 3
2020 Apr 02 68 8 3
2020 Apr 03 68 5 2
2020 Apr 04 68 5 2
2020 Apr 05 68 5 2
2020 Apr 06 68 5 2
2020 Apr 07 68 5 2
2020 Apr 08 68 5 2
2020 Apr 09 68 5 2
2020 Apr 10 68 5 2
2020 Apr 11 70 5 2
2020 Apr 12 70 5 2
2020 Apr 13 70 5 2
2020 Apr 14 70 5 2
2020 Apr 15 70 10 3
2020 Apr 16 70 8 3
2020 Apr 17 70 8 3
2020 Apr 18 70 8 3
2020 Apr 19 70 8 3
2020 Apr 20 70 5 2
2020 Apr 21 70 5 2
2020 Apr 22 70 5 2
2020 Apr 23 68 5 2
2020 Apr 24 68 5 2



Real Time Solar X-ray and Solar Wind


Solar X-rays Flux 10.7 cm A Index Kp Index
Current A0.10 70 14 2

Solar X-ray Flux
Satellite Environment Plot
Graph showing Real-Time Solar X-ray Flux Graph showing Real-Time Satellite Environment Plot
This plot shows 3-days of 5-minute solar x-ray flux values measured on the SWPC primary and secondary GOES satellites. The Satellite Environment Plot combines satellite and ground-based data to provide an overview of the current geosynchronous satellite environment.

SolarWind Speed Density Bt Bz
Current 449 km/sec 6.77 p/cm3 Bt 3.35 nT Bz 0.10 nT

Graph - Solar Wind Speed & Temp - Past 24hrs Graph - Solar Wind Density - Past 24hrs
Graph - Strength of the IMF (Bt) Past 24hrs Graph - Direction of the IMF (Bz) Past 24hrs

Graph - Solar Wind, (Bz), (Bt) - Past 12hrs

Latest LASCO Solar Corona
Real-Time Solar Wind
Graph showing current solar cycle progression (click to enlarge) Graph showing Real-Time Solar Wind
Large Angle and Spectrometric Coronagraph (LASCO). Real-Time Solar Wind data broadcast from NASA's ACE satellite.

Auroral Activity Extrapolated from NOAA POES


Northern Hemi Auroral Map
Southern Hemi Auroral Map
Current Northern hemispheric power input map (click to enlarge) Current Southern hemispheric power input map

Instruments on board the NOAA Polar-orbiting Operational Environmental Satellite (POES) continually monitor the power flux carried by the protons and electrons that produce aurora in the atmosphere. SWPC has developed a technique that uses the power flux observations obtained during a single pass of the satellite over a polar region (which takes about 25 minutes) to estimate the total power deposited in an entire polar region by these auroral particles. The power input estimate is converted to an auroral activity index that ranges from 1 to 10.


Real Time Images of the Sun


SDO AIA 0171
SDO AIA 0193
SDO MDI Sun Spots
Latest SDO AIA 0171 Latest SDO AIA 0193 Latest SDO HMI Sun Spots
SDO AIA 304
SDO AIA 304 211 171
SDO AIA 211
Latest SDO AIA 304 Latest SDO AIA 304 211 171 image of the sun Latest SDO AIA 211

The sun is constantly monitored for sun spots and coronal mass ejections. EIT (Extreme ultraviolet Imaging Telescope) images the solar atmosphere at several wavelengths, and therefore, shows solar material at different temperatures. In the images taken at 304 Angstrom the bright material is at 60,000 to 80,000 degrees Kelvin. In those taken at 171 Angstrom, at 1 million degrees. 195 Angstrom images correspond to about 1.5 million Kelvin, 284 Angstrom to 2 million degrees. The hotter the temperature, the higher you look in the solar atmosphere.

Solar Data - Issued: 0825 UTC - 01 Apr 2020 - Yesterday's Sun Spots (12)
Sunspots last 30 days

Radio Frequency Propagation


VHF and HF Band Conditions

Current HF Propagation Conditions (click to enlarge)
Optimum HF Frequencies for Distant Communications Ionopheric Propagation


Solar Cycle


Sun Spot Number Progression
F10.7cm Radio Flux Progression
Graph showing Sun Spot Number Progression Graph showing F10.7cm Radio Flux Progression
This plot shows the Solar Cycle Sun Spot Number Progression. This plot shows the F10.7cm Radio Flux Progression.

Ap Progression
Sunspot Cycle 22, 23, and 24
This plot shows the Solar Cycle Ap Progression Sunspot Cycle 22, 23, and 24
This plot shows the Solar Cycle Ap Progression. Sunspot Cycle 22, 23, and 24

The Solar Cycle is observed by counting the frequency and placement of sunspots visible on the Sun. Solar minimum occurred in December, 2008.
Solar maximum was expected to occur in May, 2013.



 Astronomy Picture of the Day


Asteroid or Potato?
Asteroid or Potato?
2020 April 1

Explanation: Is this asteroid Arrokoth or a potato? Perhaps, after all the data was beamed back to Earth from NASA's robotic New Horizons spacecraft, the featured high resolution image of asteroid Arrokoth was constructed. Perhaps, alternatively, the featured image is of a potato. Let's consider some facts. Arrokoth is the most distant asteroid ever visited and a surviving remnant of the early years of our Solar System. A potato is a root vegetable that you can eat. Happy April Fool's Day from the folks at APOD! Although asteroid Arrokoth may look like a potato, in fact very much like the featured potato, Arrokoth (formerly known as Ultima Thule) is about 200,000 times wider and much harder to eat.

  High Resolution Image
Tomorrow’s Image: tubers in space
Credit : Jack Sutton
 Courtesy of Astronomy Picture of the Day Index - Main Page & Astronomy Picture of the Day

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