Solar Section        

August 25, 2011

NASA Science News for August 25, 2011

A new breakthrough in sunspot detection could provide days of extra early warning for strong solar storms.
FULL STORY at
“NASA Science News for August 25, 2011 “

Author: Dr. Tony Phillips | Credit: Science@NASA

August 6, 2011

Auroras Reported

Aurora’s have been reported across Canada , and images are available on Spaceweather.com .

Here is an image taken by Kim Hay on August 5, 2011 in Yarker, Canada

August 2, 2011

“The Weekly” Preliminary Report and Forecast

The latest version of “The Weekly” Preliminary Report and Forecast of Solar Geophysical Data is now posted on-line and available at http://www.swpc.noaa.gov/weekly/index.html

Kim

July 31, 2011

Daily Bulletin on Solar and Geomagnetic Activity from the SDIC

Issued: 2011 Jul 31 1250 UTC
roduct: documentation at http://www.sidc.be/products/meu
#——————————————————————–#
# DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC #
# (RWC Belgium) #
#——————————————————————–#
SIDC URSIGRAM 10731
SIDC SOLAR BULLETIN 31 Jul 2011, 1238UT
SIDC FORECAST (valid from 1230UT, 31 Jul 2011 until 02 Aug 2011)
SOLAR FLARES : Eruptive (C-class flares expected, probability >= 50%)
GEOMAGNETISM : Quiet (A<20 and K<4)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 31 Jul 2011 10CM FLUX: 113 / AP: 007
PREDICTIONS FOR 01 Aug 2011 10CM FLUX: 114 / AP: 007
PREDICTIONS FOR 02 Aug 2011 10CM FLUX: 115 / AP: 007
COMMENT: NOAA AR 1261 (Catania 44) is now showing a beta-gamma-delta
configuration and has potential for major flares. In the last 24 hours
the largest one was a C3.8 flare peaking at 02:54 UT (from AR 1261). ARs
1260 and 1263 remain capable of producing M class flares. Several narrow
CMEs were seen leaving the Sun during late 30th and early 31st of July,
most probably without any influence on the Earth. There was some
geomagnetic activity in the night of July 30, with a period of minor
storm levels. This occurred as a consequence of the arrival of a fast
speed stream from a coronal hole. Conditions are quieter now, but more
active periods could occur today and tomorrow.

TODAY’S ESTIMATED ISN : 063, BASED ON 11 STATIONS.

SOLAR INDICES FOR 30 Jul 2011
WOLF NUMBER CATANIA : ///
10CM SOLAR FLUX : 113
AK CHAMBON LA FORET : 023
AK WINGST : 018
ESTIMATED AP : 016
ESTIMATED ISN : 063, BASED ON 16 STATIONS.

NOTICEABLE EVENTS SUMMARY
DAY BEGIN MAX END LOC XRAY OP 10CM RADIO BURST TYPES Catania NOAA NOTE
NONE
END
BT

March 20, 2011

Four days of AR1161-AR1162 from Howard Eskildsen

Here is a composite of the past four days of AR 1161 and 1162. The latter did not even exist as a plage the day before the first image on this series. It exploded onto the scene rapidly, matured, and then began a slow decay, paralleling the slow decline of AR 1161.
Howard

February 7, 2011

NASA Science News for Feb. 6, 2011

On Super Sun-day, NASA’s STEREO spacecraft moved into position to photograph the entire sun–front and back. Researchers say this is a transforming moment in solar physics that could lead to big advances in space weather forecasting.

FULL STORY at

http://science.nasa.gov/science-news/science-at-nasa/2011/06feb_fullsun/

January 26, 2011

Sunspot Summary Carrington Rotation 2105 – Howard Eskildsen

Sunspot Summary Carrington Rotation 2105
Observations in Ca-K
Start date: 2010/12/24, 01:06 UT, End date: 2011/01/20, 09:10 UT,http:bass2000.obspm.fr/ephem.php?lang=en
per Howard Eskildsen

Notes:
The sun had been without spots for the last 5 days of CR 2104 and the next spots appeared on the second day of the rotation. Both dimuitive spots only lasted two days. Only two of the 13 spots of the rotation were large and persistent. The others were small and relatively short lived. The sun was totally blank for two days during the latter part of the rotation. It ended with the large spot group, AR 1147, showing some complexity, but little activity.

Dates expressed as yymmdd (Universal Date)
Sunspot Location Date Date
Number First Seen Appeared Last seen Comments
1136 SW Quad 101225 101226 I did not image. Dates from SWPC solar region summary data.
1137 NE Quad 101225 101226 I did not image. Dates from SWPC solar region summary data.
1138 N Hemisphere 101227 101230 Arose abuply just SW of AR 1137, enlarged, then faded from view.
1139 By SE Limb 101228 110102 Pore in tiny, new, compact plage on 101228, more prominent the next day, then faded. Spot was visible off and on in continuum, till finally fading for good on 110102.
1140 NE Limb 101230 110111 Large Hsx carried into view by solar rotation. Little activity, carried from view by solar rotation.
1141 N Hemisphere 101231 110105 Arose abruptly, enlarged the next day, then slowly faded as solar rotation carried if trom view.
1142 SE Quad 101231 110106 Arose abruptly, enlarged the next two days. Gradually faded.
1143 SE Quad 110107 110108 New spot in fresh, oval plage that had been visible the day before. Faded from view next day.
Pore SW Limb 110108 110108 In region of old AR1139.
1144 SW Quad 110108 110109 Small, short lived.
1145 NE Limb 110108 101011 Arose in new plage near limb. Gradually faded.
1146 NE Quad 110111 110112 I was not able to image the day it appeared. Faded from view.
1147 NE Limb 110115 ***** Large spot rotated into view. It had produced flares on the far side of of the sun, but calmed consideraby when it came into view.
1148 SW Quad 110118 ***** It arose abruptly, then faded quickly; barely visible at the end of the rotation.

January 21, 2011

Sun-Earth Day

Mark March 20th on your Calendar. NASA wants to celebrate Sun-Earth Day with everyone.

Here are the particulars

Image by Observer Gema Araujo- Spain

August 6, 2011

Sunspot Summary Carington Rotation 2103

Start date: 2010/10/30, 10:01 UT End date: 2010/11/26, 17:23 UT

Notes:
On the first day of the rotation large AR 1117 was preparing to exit the NW limb, while brand new AR 1120 appeared on the NE limb. This was followed by AR 1121, the return of prior AR 1112, and though it had small spots, it had a large, active plage. Other small spots followed, and on 101110, AR 1124 appeared in a new plage on the NE quadrant and gradually enlarged with prominent leading as well as following spots. The remainder of the rotation the sun had a few scattered spots withlittle magnetic activity.

Dates below expressed as yymmdd (Universal Date)
Sunspot Location Date Date
Number First Seen Appeared Last seen Comments

1117 NE Limb ***** 101101 Large spot group from prior rotation

1120 NE Limb 101030 101107 Spot in compact plage rotated into view. Small spots spread over large consolidated plage as it crossed the Sun. Spots faded from view on NW quadrant, but large, distinct plage remained.

1121 SE Limb 101105 101110 Return of AR 1112, still flaring per SpaceWeather.com. Gradually
decreased in size and faded from view, large plage persisted.

1122 N Hemisphere 101106 101110 New spot group appeared in new compact plage. Gradually faded.

1123 SE Quadrant 101110 101115 Appeared in new plage just east of AR 1121. Enlarged for at time and then faded away.

1124 NE Quadrant 101110 101119 Plage visible the day before. Gradually enlarged and developed large leading and following spots. Rotation carried from view

1125 NE Quadrant 101113 101115 Appeared in new plage that had been visible for the two prior days. just northeast of AR 1124. Was not visible in my image on 101113, but NOAA noted it later on 101113. Enlarged slightly, then faded from view.

1126 SE Limb 101112 101121 Rotated into view and was visible on my image before 1125, but it was. labeled AR 1126, presumably since both were visible later in the sameday. Gradually faded from view.

Pore NE Quadrant 101115 101115 Short lasting pore in plage NW of AR 1124.

1127 NE Limb 101116 ***** Carried into view by solar rotation.

1128 SE Limb 101124 ***** Small spot rotated into view.