The following sections have been updated in the past 7 days. ------------------------------------------------------------------------ -- SEVERE STORMS (2 updated events, 2 new images) -- LATE SPRING SNOW IN THE UPPER MIDWEST An April storm dropped record amounts of snow in some cities. * Late Spring Snow in the Upper Midwest (Image from Apr 19, 2018; Posted Apr 20, 2018) https://earthobservatory.nasa.gov/NaturalHazards/view.php?id=92043&src=nha HURRICANE IRMA * NASA Mapping Hurricane Damage to Everglades ( ...Continue Reading

The following sections have been updated in the past 3 days. ------------------------------------------------------------------------ -- SEVERE STORMS (1 updated event, 1 new image) -- LATE SPRING SNOW IN THE UPPER MIDWEST An April storm dropped record amounts of snow in some cities. * Late Spring Snow in the Upper Midwest (Image from Apr 19, 2018; Posted Apr 20, 2018) https://earthobservatory.nasa.gov/NaturalHazards/view.php?id=92043&src=nha -------------------------------------------------------------------- ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 2771 Issue Time: 2018 Apr 23 0901 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 2770 Begin Time: 2018 Apr 10 1830 UTC Yesterday Maximum 2MeV Flux: 22704 pfu NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.Thank you for using the Product Su ...Continue Reading

Official Space Weather Advisory issued by NOAA Space Weather Prediction Center Boulder, Colorado, USA SPACE WEATHER ADVISORY OUTLOOK #18-17 2018 April 22 at 7:56 p.m. MDT (2018 April 23 0156 UTC) **** SPACE WEATHER OUTLOOK **** Summary For April 16-22 G2 (Moderate) geomagnetic storm conditions were observed on 20 April due to coronal hole effects. No other significant space weather was observed. Outlook For April 23-29 No significant space weather is expected during the outlook period. Data use ...Continue Reading

:Product: Solar Region Summary :Issued: 2018 Apr 23 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 113 Issued at 0030Z on 23 Apr 2018 Report compiled from data received at SWO on 22 Apr I. Regions with Sunspots. Locations Valid at 22/2400Z Nmbr Location Lo Area Z LL NN Mag Type 2706 N03E29 281 0130 Dao 09 10 Beta IA. H-alpha Plages without Spots. Locations Valid at 22/ ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 2770 Issue Time: 2018 Apr 22 0900 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 2769 Begin Time: 2018 Apr 10 1830 UTC Yesterday Maximum 2MeV Flux: 24056 pfu NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.Thank you for using the Product Su ...Continue Reading

:Product: Solar Region Summary :Issued: 2018 Apr 22 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 112 Issued at 0030Z on 22 Apr 2018 Report compiled from data received at SWO on 21 Apr I. Regions with Sunspots. Locations Valid at 21/2400Z Nmbr Location Lo Area Z LL NN Mag Type 2706 N04E43 280 0110 Dao 08 13 Beta 2707 S10E29 294 0010 Axx 00 01 Alpha IA. H-alpha P ...Continue Reading

Space Weather News for April 21, 2018 http://spaceweather.com https://www.facebook.com/spaceweatherdotcom LYRID METEOR SHOWER: Earth is entering a stream of debris from Comet Thatcher, source of the annual Lyrid meteor shower. If forecasters are correct, the Lyrids will peak this weekend with as many as 20 meteors per hour--a minor display compared to greater showers like the Perseids and Geminids later in the year. However, dense clumps of dust in Thatcher's debris stream sometimes produce un ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 2769 Issue Time: 2018 Apr 21 1306 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 2768 Begin Time: 2018 Apr 10 1830 UTC Yesterday Maximum 2MeV Flux: 2622 pfu NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.Thank you for using the Product Sub ...Continue Reading

:Product: Solar Region Summary :Issued: 2018 Apr 21 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 111 Issued at 0030Z on 21 Apr 2018 Report compiled from data received at SWO on 20 Apr I. Regions with Sunspots. Locations Valid at 20/2400Z Nmbr Location Lo Area Z LL NN Mag Type 2706 N04E56 280 0040 Cao 07 04 Beta IA. H-alpha Plages without Spots. Locations Valid at 20/ ...Continue Reading