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Huge sunspot AR1476 is crackling with M-class solar flares and appears to be on the verge of producing even stronger blasts. The sunspot's 'beta-gamma-delta' magnetic field harbors energy for X-class flares, the most powerful kind. Eruptions in the days ahead will likely be geoeffective as the sunspot turns to face Earth.

spaceweather.com

Anything to worry about? Poate Europa nu si-o incaseaza si doar Americanii vor avea pene de curent.

E prima data pe anu asta cand vad 50% sanse pt producerea unei furtuni geomagnetice severe la latitudini inalte.

" After more than a week of solar storm warnings, sunspot AR1476 is turning away from Earth with a mostly unblemished record of quiet. The decaying behemoth never lived up to its potential as a source of X-class solar flares. It did, however, make a great target for astrophotographers. "

spaceweather.com

Deci nu ne mai explodeaza transfomatoarele. Sa vedem cum trecem de 2013 cand se spune ca nu stiu ce furtuna solara ar putea veni, ciclul asta solar pare mult mai linistit decat precedentele 2.

Less active hurriane season for Atlantic Canada:

http://ca.news.yahoo.com/blogs/dailybre ... 50469.html

"As expected, a double CME hit Earth's magnetic field on June 16th around 0900 UT. Intitially, the impact appeared to be weak, but now the effects are growing. Analysts at the Goddard Space Weather Lab say the impact strongly compressed Earth's magnetic field, directly exposing some geosynchronous satellites to solar wind plasma. Geomagnetic storms and auroras are possible in tthe hours ahead."

spaceweather.com

Astazi, soarele traversează ecuatorul ceresc spre sud. Momentul de trecere sau "solstiţiul" s-a produs la la 12:09 LT si marcheaza inceputul verii boreale. Aceasta este cea mai lunga zi si cea mai scurta noapte a anului, în emisfera nordica. Între timp, în emisfera sudică, incepe iarna.

Solstitiu fericit!

spaceweather.com

Pfuai, ma instristeaza putin trecerea solstitiului si inceperea regresului luminii. Cel mai mult imi place in mai-iunie cu toata vara inainte, din 22 iunie vara incepe sa se consume, sa-i curga clepsidra. Daca ar tine pana in octombrie ca in 2011 in toti anii ce bine ar fi, insa septembrie always sucks sau mai trist, august cu puseuri reci.

Masele de aer globale au un delay in racire incalzire, de asta recordurile de frig sunt in ianuarie-februarie si cele de caldura sunt in iulie-august in loc sa fie la solstitii. 24 iulie sau 10 august sunt date exemplu, iar gerurile adevarate mereu vin la final de Gerar.

Mersul temperaturii medii e determinat de bilantul radiativ, adica diferenta intre caldura primita de suprafata terestra de la soare ziua si cea cedata zi si noapte prin emisia de radiatie termica a suprafetei terestre; bilantul ramane pozitiv pana in iulie, dupa care devine progresiv negativ

Nu are neaparat legatura cu vremea, dar are cu fizica.
De ce apa fierbinte ingheata mai repede decat cea rece? Este o intrebare si un mister nedeslusit de catre cercetatori, desi se cauta un raspuns inca de pe vremea lui Aristotel (sec IV, I Hr) http://www.dailymail.co.uk/sciencetech/ ... -cold.html

G2 (Moderate) Geomagnetic Storm activity is now occurring as a result of the ongoing coronal mass ejection effects. No further significant activity has occured, and while Region 1520 has become less of a threat, it still has the potential for further activity.

Ultimele alerte: WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2012 Jul 15 1705 UTC
Valid To: 2012 Jul 15 2100 UTC
Warning Condition: Persistence
NOAA Scale: G2 - Moderate
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

Sobolan? Nu, fulger.

http://www.alabamawx.com/?p=62849

Suprafata inghetata a Groenlandei s-a topit in proportie de 97% in doar cateva zile. Un eveniment de acest gen are loc o data la 150 de ani. http://science.nasa.gov/science-news/sc ... greenland/
De alfel Groenlanda se confrunta cu valuri de caldura inca din mai, cand unele recorduri au cazut. Anomalia termica a suprafatei apelor din zona este destul de mare.