Earth Day photos

By: Dr. Jeff Masters , 7:02 PM GMT on April 21, 2008

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Tuesday, April 22, marks Earth Day. As has been my tradition, on Earth Day I share some of my favorite photos wunderground users have uploaded over the past year. The Earth's atmosphere is a fantastically beautiful and complicated creation, and I thank all of you who took the time to share the spectacular things you've seen with the rest of us!

I'll be back Wednesday to talk about the demise of this year's La NiƱa.

Jeff Masters

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sunset rainbow (canderelli)
beautiful evening on the North Dakota plains
sunset rainbow
Thunderstorm (CameraGuy)
Lightning, stars, and airplane. This lightning strike was quite a ways from the rain area! (Photo 6)
Thunderstorm
Tonight's Aurora (Glacierwolf)
Small aurora that started right at sunset tonight. Stayed just a stream for most of an hour. Hopefully we will see more in the next few days. You can see more Northern Lights photos in my folder here and at my web site www.northpolegallery.com
Tonight's Aurora

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348. GatorWX
11:43 PM GMT on April 22, 2008
No doubt, the low in question is drawing needed moisture off the other low to its se.
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347. Weather456
7:39 PM AST on April 22, 2008
Cane, if its any help:

a micron is simply a measure of wave lengths:

Visible light (Visible Imagery) have wave lengths between 0.56-0.88 microns

Water Vapor Imagery - 5.35-7.85 microns

Infrared Imagery - 8.3-14.4 microns

Visible light has the shortest wave lenghts while infraed has the longest wave lengths with water vapor imagery in between.
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346. extreme236
11:44 PM GMT on April 22, 2008
Average number trending upward for now...

Date Tahiti Darwin Daily** 30 day 90 day
Av.SOI Av.SOI
----------------------------------------------------------------
24-Mar-2008 1011.48 1008.60 -5.80 14.00 16.09
25-Mar-2008 1010.80 1008.70 -9.60 13.00 15.85
26-Mar-2008 1012.84 1007.50 5.80 12.20 15.73
27-Mar-2008 1014.65 1007.40 15.00 11.71 15.65
28-Mar-2008 1015.28 1009.00 10.30 11.49 15.40
29-Mar-2008 1013.91 1009.50 1.40 10.97 14.99
30-Mar-2008 1012.65 1009.20 -3.10 10.40 14.61
31-Mar-2008 1014.12 1009.10 4.30 10.21 14.40
1-Apr-2008 1013.94 1009.45 15.10 10.55 14.22
2-Apr-2008 1013.99 1010.00 11.50 10.44 13.92
3-Apr-2008 1014.54 1009.80 16.90 10.49 13.65
4-Apr-2008 1014.78 1009.50 20.80 10.78 13.42
5-Apr-2008 1015.89 1010.45 21.90 11.23 13.38
6-Apr-2008 1013.90 1011.85 -2.40 10.81 13.27
7-Apr-2008 1011.31 1010.80 -13.50 9.87 13.02
8-Apr-2008 1010.89 1010.25 -12.60 8.79 12.73
9-Apr-2008 1011.60 1009.80 -4.20 8.12 12.53
10-Apr-2008 1012.98 1009.25 9.60 7.88 12.41
11-Apr-2008 1013.72 1009.55 12.80 7.77 12.39
12-Apr-2008 1013.73 1009.15 15.70 7.84 12.41
13-Apr-2008 1012.30 1008.85 7.60 7.72 12.37
14-Apr-2008 1011.71 1008.65 4.80 7.67 12.38
15-Apr-2008 1011.05 1009.25 -4.20 7.14 12.43
16-Apr-2008 1011.05 1009.20 -3.90 6.52 12.48
17-Apr-2008 1010.04 1008.95 -9.30 5.68 12.32
18-Apr-2008 1010.80 1008.70 -2.00 5.01 12.23
19-Apr-2008 1012.44 1008.80 9.00 4.69 12.28
20-Apr-2008 1012.69 1008.60 12.20 4.63 12.41
21-Apr-2008 1012.23 1008.40 10.30 4.70 12.51
22-Apr-2008 1013.74 1009.15 15.80 5.02 12.70
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345. KEEPEROFTHEGATE (Mod)
11:39 PM GMT on April 22, 2008
by the way ca the ull will become and ocean gale with some possible investive properties but not yet full blown this is not the one current sat an regenial. observations. indicate se ward movement follow with n ne movement later in the week only threat is to shipping traffic at this time
Member Since: July 15, 2006 Posts: 178 Comments: 56141
344. GatorWX
11:31 PM GMT on April 22, 2008
I think all these ull's have too much shear and dry air and not enough warm water. We'll see! I wouldn't write anything off after what Vince did in '05.
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343. KEEPEROFTHEGATE (Mod)
11:37 PM GMT on April 22, 2008
coment 337 is in reference to 335
Member Since: July 15, 2006 Posts: 178 Comments: 56141
342. KEEPEROFTHEGATE (Mod)
11:35 PM GMT on April 22, 2008
cane addict i think cane rehab is just about ready for you
Member Since: July 15, 2006 Posts: 178 Comments: 56141
341. Weather456
7:28 PM AST on April 22, 2008
334. CaneAddict 7:16 PM AST on April 22, 2008
333. Weather456 11:12 PM GMT on April 22, 2008
I NEVER base my forecast's or predictions on my gut feeling, I just made an opinion based on my feelings.

ohok

I hope you did'nt mean that as a sarcastic remark. I really don't feel like getting in an agrument already.


No...I didnt mean it that way...I wasnt implying that ur basing it on guts. I saw ur point so I agreed with it.
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340. Drakoen
11:30 PM GMT on April 22, 2008
338. CaneAddict 11:24 PM GMT on April 22, 2008
337. KEEPEROFTHEGATE 11:20 PM GMT on April 22, 2008
info based upon wv enhance 6.5 micron imaged atlantic basin time stamped 701 edt

I and most likely others have no idea what your saying. It's like your put random words together and post them. Please try to post more understandable comments, Thanks.


LOL!!! Try to be a bit nicer....
Member Since: October 28, 2006 Posts: 57 Comments: 30833
339. CaneAddict
11:28 PM GMT on April 22, 2008
Dr. Masters may have more to his blog tomorrow if this low-pressure area doesent something tricky.
Member Since: October 5, 2007 Posts: 3 Comments: 2151
338. CaneAddict
11:21 PM GMT on April 22, 2008
337. KEEPEROFTHEGATE 11:20 PM GMT on April 22, 2008
info based upon wv enhance 6.5 micron imaged atlantic basin time stamped 701 edt


I and most likely others have no idea what your saying. It's like your put random words together and post them. Please try to post more understandable comments, Thanks.
Member Since: October 5, 2007 Posts: 3 Comments: 2151
337. KEEPEROFTHEGATE (Mod)
11:16 PM GMT on April 22, 2008
info based upon wv enhance 6.5 micron imaged atlantic basin time stamped 701 edt
Member Since: July 15, 2006 Posts: 178 Comments: 56141
336. CaneAddict
11:16 PM GMT on April 22, 2008
JFV, in the summer...

Heres a look at the low of the coast...
Andreas satellite presentation was much more impressive with the wrap-around convection and organized bands around the area of low pressure.


That low-pressure area is slowly attempting to organize, Banding features are becoming visible....Again let me make it clear that i am not anticpating development, I do however believe it has a chance. Compared to Andrea, That low doesent lack much except for more banding and a good amount of convection.
Member Since: October 5, 2007 Posts: 3 Comments: 2151
335. KEEPEROFTHEGATE (Mod)
11:02 PM GMT on April 22, 2008
mark 76.5w/31.9n ull
movement 1.0 s by 0.6 e
Member Since: July 15, 2006 Posts: 178 Comments: 56141
334. CaneAddict
11:15 PM GMT on April 22, 2008
333. Weather456 11:12 PM GMT on April 22, 2008
I NEVER base my forecast's or predictions on my gut feeling, I just made an opinion based on my feelings.

ohok


I hope you did'nt mean that as a sarcastic remark. I really don't feel like getting in an agrument already.
Member Since: October 5, 2007 Posts: 3 Comments: 2151
333. Weather456
7:11 PM AST on April 22, 2008
I NEVER base my forecast's or predictions on my gut feeling, I just made an opinion based on my feelings.

ohok
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331. Drakoen
10:58 PM GMT on April 22, 2008
JFV, in the summer...

Heres a look at the low of the coast...
Andreas satellite presentation was much more impressive with the wrap-around convection and organized bands around the area of low pressure.
Member Since: October 28, 2006 Posts: 57 Comments: 30833
330. hahaguy
6:44 PM EDT on April 22, 2008
can anyone see my comments
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328. Levi32
2:32 PM AKDT on April 22, 2008
324. Drakoen 2:24 PM AKDT on April 22, 2008 Hide this comment.
321. Levi32 10:20 PM GMT on April 22, 2008
319. Drakoen 2:16 PM AKDT on April 22, 2008 Hide this comment.
the vorticity max at 500mb is very strong compared to the 850mb. This double barrel low needs some more convection...

Naturally the 500mb is stronger......but the 850mb is very strong compared to what we usually see, I mean this thing doesn't even have to work its way to the surface, it's already there, and quite well established. Just some more convection and organization and it could be labeled an invest by the NHC sometime in the next 24 hours.

I'm not as sold as you are. I prefer a more conservative approach with these kind of systems.


No I totally agree....I like to play equalizer.....right now there's more evidence against this system than for it, so I'm taking on that point of view, but not hyping for development. This is good practice for the season. It definitely needs more persistent convection before it can be declared an invest, if the NHC even will have the sense to do so if it does get to that point. It does have a chance though.....sub-tropical systems don't need that much to get beastly, they really don't.
Member Since: November 24, 2005 Posts: 635 Comments: 26701
327. CaneAddict
10:31 PM GMT on April 22, 2008
Cane,

I can tell u we shouldnt make predictions on "gut" feelings but rather on actually data and scenarios. But ur correct, the one nearest the coast has the better chance and should be monitor for signs of increase convection.

the area nearest to the coast should be monitor for signs of development becuz enviromental conditions have somewhat improve over the past 24 hrs. Shear values have drop 30 knots and the system sits over the Gulf stream. Both the CMC and GFS indentifies this system but does not keep it after 24-48 hrs.


I NEVER base my forecast's or predictions on my gut feeling, I just made an opinion based on my feelings.
Member Since: October 5, 2007 Posts: 3 Comments: 2151
326. KoritheMan
10:24 PM GMT on April 22, 2008
I don't think this will become an invest. As Drak said, it needs more convection. It isn't nearly deep enough for it to be labeled an invest yet. In addition, if it were to gain the necessary convection to be classified as an invest, then said convection would need to persist in order for it to become a subtropical or tropical cyclone.
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325. Patrap
5:28 PM CDT on April 22, 2008
GOES-12 Low Cloud Product,Click to ENlarge Link
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324. Drakoen
10:21 PM GMT on April 22, 2008
321. Levi32 10:20 PM GMT on April 22, 2008
319. Drakoen 2:16 PM AKDT on April 22, 2008 Hide this comment.
the vorticity max at 500mb is very strong compared to the 850mb. This double barrel low needs some more convection...

Naturally the 500mb is stronger......but the 850mb is very strong compared to what we usually see, I mean this thing doesn't even have to work its way to the surface, it's already there, and quite well established. Just some more convection and organization and it could be labeled an invest by the NHC sometime in the next 24 hours.

I'm not as sold as you are. I prefer a more conservative approach with these kind of systems.
Member Since: October 28, 2006 Posts: 57 Comments: 30833
323. KEEPEROFTHEGATE (Mod)
10:21 PM GMT on April 22, 2008
it will possibly gain some investive charateristics later tonighg
Member Since: July 15, 2006 Posts: 178 Comments: 56141
322. KEEPEROFTHEGATE (Mod)
10:11 PM GMT on April 22, 2008
ull off se s caroliner drifing s se at the moment maintain coarse for 24 hrs afterwhich ull will absorb energy of second system beginning by midnight tonight and the day on wed thuis system will then form into a deep gale force system central pressures down to 976 by sat at which time it will have tracked n ne to lie off newfoundland southern southeastern grandbanks near flemish cap nw atlantic by sat
Member Since: July 15, 2006 Posts: 178 Comments: 56141
321. Levi32
2:17 PM AKDT on April 22, 2008
319. Drakoen 2:16 PM AKDT on April 22, 2008 Hide this comment.
the vorticity max at 500mb is very strong compared to the 850mb. This double barrel low needs some more convection...


Naturally the 500mb is stronger......but the 850mb is very strong compared to what we usually see, I mean this thing doesn't even have to work its way to the surface, it's already there, and quite well established. Just some more convection and organization and it could be labeled an invest by the NHC sometime in the next 24 hours.
Member Since: November 24, 2005 Posts: 635 Comments: 26701
320. Weather456
6:11 PM AST on April 22, 2008
Cane,

I can tell u we shouldnt make predictions on "gut" feelings but rather on actually data and scenarios. But ur correct, the one nearest the coast has the better chance and should be monitor for signs of increase convection.

the area nearest to the coast should be monitor for signs of development becuz enviromental conditions have somewhat improve over the past 24 hrs. Shear values have drop 30 knots and the system sits over the Gulf stream. Both the CMC and GFS indentifies this system but does not keep it after 24-48 hrs.
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319. Drakoen
10:14 PM GMT on April 22, 2008
the vorticity max at 500mb is very strong compared to the 850mb. This double barrel low needs some more convection...
Member Since: October 28, 2006 Posts: 57 Comments: 30833
318. Levi32
2:12 PM AKDT on April 22, 2008
Yeah Adrian that's a pretty similar look there. This one needs some more convective structural organization before it will be worth calling an invest.
Member Since: November 24, 2005 Posts: 635 Comments: 26701
317. Levi32
2:09 PM AKDT on April 22, 2008
18z Tropical Genesis maps are out. The area of 0.4% TC formation probability has increased in size off the SC coast. The 850mb circulation max also remains quite impressive for the low off the SC coast. Shear is down 10kts from 6 hours ago.
Member Since: November 24, 2005 Posts: 635 Comments: 26701
316. KEEPEROFTHEGATE (Mod)
8:10 PM GMT on April 22, 2008
outbreak nw ark ne oak
Member Since: July 15, 2006 Posts: 178 Comments: 56141
315. hurricane23
6:10 PM EDT on April 22, 2008
Somewhat close look wise but thats about it right now.

90L STS Andrea...



Current upper level low...

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314. Weather456
6:07 PM AST on April 22, 2008
308. FLWeatherFreak91 5:45 PM AST on April 22, 2008
Here's a question for you guys- If you had to compare the steering currents which are already in place this year with the currents of another year, tropically speaking, which year in the past 10 resembles this year the most?


2004 and 1999
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313. CaneAddict
9:55 PM GMT on April 22, 2008
Personally without basing this prediction on anything but merely my gut feeling and memories, I believe one of these lows will become a sub-tropical storm. I remember watching Andrea develop last year and this looks identical to how it all started out.

Usually i don't make predictions based on "gut" feelings but i feel rather confident within saying this.
Member Since: October 5, 2007 Posts: 3 Comments: 2151
312. hurricane23
5:53 PM EDT on April 22, 2008
Another strong cold-front into florida?Yes sir says some models ive looked at.Still early and a bit long range but lets see if the trends continues.
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311. TEXASYANKEE43
9:45 PM GMT on April 22, 2008
Go to NASA site on post 307 and zoom in @ 33.33n and72.33w. looks like a horse butting heads with a goat. My modify works ok
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309. Drakoen
9:46 PM GMT on April 22, 2008
308. FLWeatherFreak91 9:45 PM GMT on April 22, 2008
Here's a question for you guys- If you had to compare the steering currents which are already in place this year with the currents of another year, tropically speaking, which year in the past 10 resembles this year the most?


2004.
Member Since: October 28, 2006 Posts: 57 Comments: 30833
308. FLWeatherFreak91
5:43 PM EDT on April 22, 2008
Here's a question for you guys- If you had to compare the steering currents which are already in place this year with the currents of another year, tropically speaking, which year in the past 10 resembles this year the most?
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307. Levi32
1:36 PM AKDT on April 22, 2008
The 2nd low southeast of the ULL off the Carolinas now has a defined LLC on visible imagery (see image below). If it's hard to see then go to the NASA Satellite page and view the zoomed-in loop of the area and you'll see it. I have doubts that this low will be able to amount to much.....it's under high shear from the ULL to its northwest, and will probably end up being absorbed into one of the 2 lows to its north. If either of these lows has a chance to develop into a subtropical system, I think the Carolina one has the best chance at this point.

Free Image Hosting at www.ImageShack.us
Member Since: November 24, 2005 Posts: 635 Comments: 26701
306. Drakoen
9:36 PM GMT on April 22, 2008
The SSTs this year are really nothing compared to 2007. This time last year we already have TCHP of 80 or higher over most of the Caribbean.
Member Since: October 28, 2006 Posts: 57 Comments: 30833
304. Drakoen
9:35 PM GMT on April 22, 2008
303. Weather456 9:33 PM GMT on April 22, 2008
its becoming a pain not being able to modify my comments.


Yea it is.
Member Since: October 28, 2006 Posts: 57 Comments: 30833
303. Weather456
5:33 PM AST on April 22, 2008
its becoming a pain not being able to modify my comments.
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302. weatherfromFlorida
9:31 PM GMT on April 22, 2008
299. Weather456 9:28 PM GMT on April 22, 2008 Hide this comment.
the area further southeast has a bit more convection going for it but its future is uncertain. The short-wave trough that accompanies the first low near the East Coast is expected to dig towards the southeast and lift this feature towards the northeast, while merging with another low. During this porcess, there are no indicators that the system will aquire sufficient tropical characteristics.

Said that with Andrea
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301. Weather456
5:28 PM AST on April 22, 2008
Had a question for you all. How does a tropical cyclone end up with this satellite presentation where it appears to become two buttocks? Just out of curiosity.

dry air entrainment and sinking air as Drak pointed out
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300. hahaguy
5:29 PM EDT on April 22, 2008
from what the pics show that drak posted the sst's around cuba are starting to heat up
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299. Weather456
5:26 PM AST on April 22, 2008
the area further southeast has a bit more convection going for it but its future is uncertain. The short-wave trough that accompanies the first low near the East Coast is expected to dig towards the southeast and lift this feature towards the northeast, while merging with another low. During this porcess, there are no indicators that the system will aquire sufficient tropical characteristics.
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298. TEXASYANKEE43
9:24 PM GMT on April 22, 2008
296. cchsweatherman 9:23 PM GMT on April 22, 2008
Had a question for you all. How does a tropical cyclone end up with this satellite presentation where it appears to become two buttocks?



Is this a riddle?
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Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.

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