[NASA REPORTS]

ALERT: Electron 2 MeV Integral Flux exceeded 1,000 pfu

2026-04-04T22:21:30Z

Space Weather Message Code: ALTEF3

Serial Number: 3666

Issue Time: 2026 Apr 05 0507 UTC



CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu

Continuation of Serial Number: 3665

Begin Time: 2026 Apr 03 0920 UTC

Yesterday Maximum 2MeV Flux: 2419 pfu






Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

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Solar Region Summary (SRS)

2026-04-04T17:35:58Z

:Product: Solar Region Summary

:Issued: 2026 Apr 05 0030 UTC

# Prepared jointly by the U.S. Dept. of Commerce, NOAA,

# Space Weather Prediction Center and the U.S. Air Force.

#

Joint USAF/NOAA Solar Region Summary

SRS Number 95 Issued at 0030Z on 05 Apr 2026
Report compiled from data received at SWO on 04 Apr

I.  Regions with Sunspots.  Locations Valid at 04/2400Z 

Nmbr Location  Lo  Area  Z   LL   NN Mag Type

4403 N15W66   207  0020 Hrx  05   01 Alpha

4404 N13W47   188  0040 Cso  04   03 Beta

4405 S28W33   174  0200 Fao  16   10 Beta

4406 N07W41   182  0050 Hsx  02   01 Alpha

4408 N08W15   156  0050 Hsx  02   01 Alpha

4409 N02W15   156  0170 Eai  11   26 Beta-Gamma

4411 S06E33   108  0010 Axx  01   01 Alpha

IA. H-alpha Plages without Spots.  Locations Valid at 04/2400Z Apr

Nmbr  Location  Lo

4407  N17W39   180

II. Regions Due to Return 05 Apr to 07 Apr

Nmbr Lat    Lo

4392 S18    033

ALERT: Electron 2 MeV Integral Flux exceeded 1,000 pfu

2026-04-04T05:07:29Z

Space Weather Message Code: ALTEF3

Serial Number: 3665

Issue Time: 2026 Apr 04 1158 UTC



CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu

Continuation of Serial Number: 3664

Begin Time: 2026 Apr 03 0920 UTC

Yesterday Maximum 2MeV Flux: 4465 pfu






Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Solar Region Summary (SRS)

2026-04-03T17:36:00Z

:Product: Solar Region Summary

:Issued: 2026 Apr 04 0030 UTC

# Prepared jointly by the U.S. Dept. of Commerce, NOAA,

# Space Weather Prediction Center and the U.S. Air Force.

#

Joint USAF/NOAA Solar Region Summary

SRS Number 94 Issued at 0030Z on 04 Apr 2026
Report compiled from data received at SWO on 03 Apr

I.  Regions with Sunspots.  Locations Valid at 03/2400Z 

Nmbr Location  Lo  Area  Z   LL   NN Mag Type

4399 S16W92   246  0050 Hsx  02   01 Alpha

4403 N15W53   207  0050 Cso  05   02 Beta

4404 N13W34   188  0040 Cso  02   03 Beta

4405 S27W20   174  0180 Eao  15   12 Beta

4406 N07W29   183  0060 Hsx  02   01 Alpha

4408 N08W02   156  0070 Hsx  02   01 Alpha

4409 N02W01   155  0140 Eai  11   16 Beta-Gamma

4411 S05E46   108  0010 Axx  01   02 Alpha

IA. H-alpha Plages without Spots.  Locations Valid at 03/2400Z Apr

Nmbr  Location  Lo

4402  N18W84   238

4407  N17W25   179

II. Regions Due to Return 04 Apr to 06 Apr

Nmbr Lat    Lo

4392 S18    033

NASA Sets Coverage for Northrop Grumman’s CRS-24 Resupply Launch

2026-04-03T15:24:22Z

NASA News

MEDIA ADVISORY M26-027

APRIL 3, 2026

MISSIONS

NASA Sets Coverage for Northrop Grumman’s CRS-24 Resupply Launch

Northrop Grumman’s Cygnus XL cargo spacecraft, carrying more than 11,000 pounds of new science investigations and supplies for the Expedition 73 crew, approaches the International Space Station on Sept. 18, 2025. Credit: NASA

NASA, Northrop Grumman, and SpaceX are targeting no earlier than 8:49 a.m. EDT on Wednesday, April 8, for the next launch delivering science investigations, supplies, and equipment to the International Space Station.

Filled with approximately 11,000 pounds of cargo, the Northrop Grumman Cygnus XL spacecraft, aboard a SpaceX Falcon 9 rocket, will launch from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida. The mission is known as NASA’s Northrop Grumman Commercial Resupply Services 24, or Northrop Grumman CRS-24.

Watch the agency’s launch and arrival coverage on NASA+, Amazon Prime, and the agency’s YouTube channel. Learn how to watch NASA content through a variety of online platforms, including social media.

Following launch, astronauts aboard the space station will use the Canadarm2 robotic arm to capture the Cygnus XL on Friday, April 10, before ground controllers install it to the Unity module’s Earth-facing port for cargo unloading.

Highlights of space station research and technology demonstrations being delivered aboard this Cygnus XL spacecraft include:

A new module for the Cold Atom Lab to advance quantum science that could improve computing technology and aid in the search for dark matter
Hardware to produce a greater number of therapeutic stem cells for blood diseases and cancer
Model organisms to study the gut microbiome
A receiver that could enhance space weather models that protect critical space infrastructure such as GPS and radar

Media interested in speaking to a science subject matter expert should contact Sandra Jones at sandra.p.jones@nasa.gov.

The spacecraft is scheduled to remain at the orbiting laboratory until October before departing with several thousand pounds of trash and burning up harmlessly during re-entry.

Northrop Grumman named the spacecraft the S.S. Steven R. Nagel in honor of the former NASA astronaut who flew four space shuttle missions, logging more than 720 hours in space.

NASA’s mission coverage is as follows (all times Eastern; subject to change based on real-time operations):

Wednesday, April 8

8:30 a.m.: Launch coverage begins on NASA+, Amazon Prime, and YouTube.

8:49 a.m.: Launch

Friday, April 10

12:30 a.m.: Arrival coverage begins on NASA+, Amazon Prime, and YouTube.

1:10 a.m.: Capture

NASA website launch coverage

Launch day coverage of the mission will be available on the NASA website. Coverage will include live streaming and blog updates beginning no earlier than 8:30 a.m. April 8 as the countdown milestones occur.

On-demand streaming video on NASA+ and photos of the launch will be available shortly after liftoff. For questions about countdown coverage, contact NASA’s Kennedy Space Center in Florida newsroom at 321-867-2468. Follow countdown coverage on our International Space Station blog for updates.

Attend launch virtually

Members of the public can register to attend this launch virtually. NASA’s virtual guest program for this mission also includes curated launch resources, notifications about related opportunities or changes, and a stamp for the NASA virtual guest passport following launch.

Watch, engage on social media

Let people know you’re watching the mission on X, Facebook, and Instagram by following and tagging these accounts:

X: @NASA, @NASASpaceOps, @NASAKennedy, @Space_Station, @ISS_CASIS

Facebook: NASA, NASAKennedy, ISS, ISS National Lab

Instagram: @NASA, @NASAKennedy, @ISS, @ISSNationalLab

Learn more about the mission at:

https://www.nasa.gov/event/nasas-northrop-grumman-crs-24/

-end-

Read on NASA.gov

Contact

Josh Finch

Headquarters, Washington

202-358-1100

joshua.a.finch@nasa.gov

Amanda Griffin

Kennedy Space Center, Fla.

321-876-2468

amanda.a.griffin@nasa.gov

Sandra Jones

Johnson Space Center, Houston

281-483-5111

sandra.p.jones@nasa.gov

National Aeronautics and Space Administration

NASA explores the unknown in air and space, innovates for the benefit of humanity, and inspires the world through discovery.

Visit nasa.gov

Follow NASA

Weekly Natural Event Updates April 3, 2026

2026-04-03T09:21:13Z

April 3, 2026

Natural Events

This Week's Natural Event Images

View the natural events archive

Réunion Island Lava Reaches the Sea

The February 2026 eruption at Piton de la Fournaise has lasted longer and produced a larger volume of lava than recent eruptions from this frequently active volcano.

March of the Harmattan

Strong winds in March 2026 carried Saharan dust across northwestern Africa and toward the Canary Islands, reducing visibility and prompting alerts.

Fires Tear Through Nebraska Grasslands

Dry, warm, and windy conditions across the U.S. Great Plains led to extreme fire activity in March 2026.

NASA Earth Observatory

Where every day is Earth day

Visit science.nasa.gov/earth/earth -observatory

Follow NASAEarth

NASA Earth Science Division

ALERT: Electron 2 MeV Integral Flux exceeded 1,000 pfu

2026-04-03T02:38:24Z

Space Weather Message Code: ALTEF3

Serial Number: 3664

Issue Time: 2026 Apr 03 0936 UTC



ALERT: Electron 2MeV Integral Flux exceeded 1000pfu

Threshold Reached: 2026 Apr 03 0920 UTC

Station: GOES19

 







Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

NASA’s Artemis II Mission Leaves Earth Orbit for Flight around Moon

2026-04-02T20:06:48Z

NASA News

RELEASE 26-027

APRIL 2, 2026

MISSIONS

NASA’s Artemis II Mission Leaves Earth Orbit for Flight around Moon

Earth's crescent is seen from a solar array camera on the Orion spacecraft on the first flight day of the Artemis II mission. Credit: NASA

For the first time in more than 50 years, astronauts on a NASA mission are bound to fly around the Moon after successfully completing a key burn of Orion’s main engine.

With the approximately six-minute firing of the spacecraft’s service module engine on Thursday, known as the translunar injection burn, Orion and its crew of NASA astronauts Reid Wiseman, Victor Glover, Christina Koch, and CSA (Canadian Space Agency) astronaut Jeremy Hansen accelerated to break free of Earth’s orbit and began the outbound trajectory toward Earth’s nearest neighbor.

“Today, for the first time since Apollo 17 in 1972, humans have departed Earth orbit. Reid, Victor, Christina, and Jeremy now are on a precise trajectory toward the Moon. Orion is operating with crew for the first time in space, and we are gathering critical data, and learning from each step," said Dr. Lori Glaze, acting associate administrator for the Exploration Systems Development Mission Directorate at NASA Headquarters in Washington. "Each milestone we reach marks meaningful progress on the path forward for the Artemis program. While we have eight intensive days of work ahead, this is a big moment, and we're proud to share it with the world."

NASA’s SLS (Space Launch System) rocket and Orion spacecraft lifted off from Launch Pad 39B at the agency’s Kennedy Space Center in Florida at 6:35 p.m. EDT on April 1, sending the four astronauts on a planned 10-day test flight around the Moon and back.

After reaching space, Orion deployed its four solar array wings, enabling the spacecraft to receive energy from the Sun, while the crew and engineers on the ground immediately began transitioning the spacecraft from launch to flight operations to start checking out key systems.

About 49 minutes into the test flight, the SLS rocket’s upper stage fired to put Orion into an elliptical orbit around Earth. A second planned burn by the stage propelled Orion, which the crew named “Integrity,” into a high Earth orbit extending about 46,000 miles above the Earth for about 24 hours of system checkouts. After the burn, Orion separated from the stage, flying free on its own.

The crew then conducted a manual piloting demonstration to test Orion’s handling qualities using the ICPS (interim cryogenic propulsion stage) as a docking target.

At the conclusion of the demonstration, Orion executed an automated departure burn to safely back away from the ICPS, after which the stage performed its own disposal burn and re-entered Earth’s atmosphere over a remote region of the Pacific Ocean.

Prior to its re-entry, four small CubeSats were deployed from SLS rocket’s Orion stage adapter.

Other tasks completed so far include a transition to the Deep Space Network for communications, the crew becoming acclimated to the space environment, completing their first rest periods, performing the first flywheel exercise, restoring the spacecraft’s toilet to normal operations, and configuring the spacecraft for the translunar injection burn.

During a planned lunar flyby on Monday, April 6, the astronauts will take high resolution photographs and provide their own observations of the lunar surface, including areas of the far side of the Moon never seen directly by humans. Although the lunar far side will only be partially illuminated during the flyby, the conditions should create shadows that stretch across the surface, enhancing relief and revealing depth, ridges, slopes, and crater rims that are often difficult to detect under full illumination.

Following a successful lunar flyby, the astronauts will return to Earth and splash down in the Pacific Ocean off the coast of San Diego.

As part of a Golden Age of innovation and exploration, NASA will send Artemis astronauts on increasingly challenging missions to explore more of the Moon for scientific discovery, economic benefits, and to build on our foundation for the first crewed missions to Mars.

Follow the latest mission progress, including more images from the test flight, at:

https://www.nasa.gov/artemis-ii

-end-

Read on NASA.gov

Contact

Cheryl Warner / Rachel Kraft

Headquarters, Washington

202-358-1600

cheryl.m.warner@nasa.gov / rachel.h.kraft@nasa.gov

National Aeronautics and Space Administration

NASA explores the unknown in air and space, innovates for the benefit of humanity, and inspires the world through discovery.

Visit nasa.gov

Follow NASA

Solar Region Summary (SRS)

2026-04-02T17:37:01Z

:Product: Solar Region Summary

:Issued: 2026 Apr 03 0030 UTC

# Prepared jointly by the U.S. Dept. of Commerce, NOAA,

# Space Weather Prediction Center and the U.S. Air Force.

#

Joint USAF/NOAA Solar Region Summary

SRS Number 93 Issued at 0030Z on 03 Apr 2026
Report compiled from data received at SWO on 02 Apr

I.  Regions with Sunspots.  Locations Valid at 02/2400Z 

Nmbr Location  Lo  Area  Z   LL   NN Mag Type

4399 S16W78   245  0050 Hsx  02   01 Alpha

4401 N25W83   250  0070 Hax  03   05 Alpha

4402 N18W70   237  0010 Axx  01   01 Alpha

4403 N15W39   206  0060 Hax  04   03 Alpha

4404 N13W21   188  0040 Cso  03   05 Beta

4405 S27W07   174  0220 Eai  14   15 Beta

4406 N07W15   182  0050 Hsx  02   01 Alpha

4408 N08E11   157  0040 Hsx  02   01 Alpha

4409 N02E13   155  0040 Dai  09   15 Beta-Gamma

4410 N10W88   256  0050 Cso  07   05 Beta

IA. H-alpha Plages without Spots.  Locations Valid at 02/2400Z Apr

Nmbr  Location  Lo

4407  N17W11   178

II. Regions Due to Return 03 Apr to 05 Apr

Nmbr Lat    Lo

None

Daily Natural Event Updates April 2, 2026

2026-04-02T09:20:54Z

April 2, 2026

Natural Events

Latest Natural Event Images

View the natural events archive

Réunion Island Lava Reaches the Sea

The February 2026 eruption at Piton de la Fournaise has lasted longer and produced a larger volume of lava than recent eruptions from this frequently active volcano.

March of the Harmattan

Strong winds in March 2026 carried Saharan dust across northwestern Africa and toward the Canary Islands, reducing visibility and prompting alerts.

NASA Earth Observatory

Where every day is Earth day

Visit science.nasa.gov/earth/earth -observatory

Follow NASAEarth

NASA Earth Science Division

Solar Region Summary (SRS)

2026-04-01T17:37:11Z

:Product: Solar Region Summary

:Issued: 2026 Apr 02 0030 UTC

# Prepared jointly by the U.S. Dept. of Commerce, NOAA,

# Space Weather Prediction Center and the U.S. Air Force.

#

Joint USAF/NOAA Solar Region Summary

SRS Number 92 Issued at 0030Z on 02 Apr 2026
Report compiled from data received at SWO on 01 Apr

I.  Regions with Sunspots.  Locations Valid at 01/2400Z 

Nmbr Location  Lo  Area  Z   LL   NN Mag Type

4399 S16W65   245  0050 Hsx  02   01 Alpha

4401 N25W70   250  0090 Hax  03   05 Alpha

4402 N19W57   237  0020 Hrx  02   03 Alpha

4403 N15W26   206  0070 Hsx  03   02 Alpha

4404 N15W07   187  0060 Csi  04   08 Beta

4405 S27E05   175  0210 Eac  12   11 Beta-Gamma

4406 N08W02   182  0050 Hsx  02   01 Alpha

4408 N08E24   156  0040 Hsx  02   01 Alpha

4409 N02E24   156  0030 Dri  04   08 Beta

IA. H-alpha Plages without Spots.  Locations Valid at 01/2400Z Apr

Nmbr  Location  Lo

4407  N17E03   177

II. Regions Due to Return 02 Apr to 04 Apr

Nmbr Lat    Lo

4391 N07    085