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

()
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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298. TEXASYANKEE43
9:28 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?
297. Drakoen
9:27 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? Just out of curiosity.

Surface divergence which can be associated with dry air or shear.
Member Since: October 28, 2006 Posts: 57 Comments: 30814
296. cchsweatherman
9:23 PM GMT on April 22, 2008
Good evening all. Great pictures there Dr. Masters. They truly do show the beauty of the atmosphere.

I see many people continue to debate about whether or not any of the three lows out there will develop. Well, here is what I have to say. You cannot discount possible subtropical development, but there are very few signs that would point towards such development taking place. Time will have to tell the story.

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.


On May 1st, I will finally have my 2008 Hurricane Season Predictions published with full explanations (of course in laymen's terms so all can understand) and the numbers so many people stupidly focus on.

Have a nice evening all and I hope to talk with you again sometime this evening. I can't wait to read what Dr. Masters will have to report on the latest La Nina conditions so that we can all finally stop bickering over it.
Member Since: April 14, 2007 Posts: 8 Comments: 5169
295. Cavin Rawlins
9:21 PM GMT on April 22, 2008
Good afternoon,

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.

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 indicators that the system will aquire sufficient tropical characteristics.
Member Since: July 24, 2005 Posts: 407 Comments: 19076
294. Thundercloud01221991
9:21 PM GMT on April 22, 2008
his image stretches the blog
Member Since: August 1, 2006 Posts: 28 Comments: 3716
293. TEXASYANKEE43
9:20 PM GMT on April 22, 2008
292. Thundercloud01221991 9:15 PM GMT on April 22, 2008

Draken will you please remove your image



what is the problem?
292. Thundercloud01221991
9:15 PM GMT on April 22, 2008
287. Drakoen 8:59 PM GMT on April 22, 2008
282. Thundercloud01221991 8:46 PM GMT on April 22, 2008
Draken will you please remove your image

I'm not able to and its probably better for you to use a different browser such as fire fox in this thread.


I am unable to because I am at work
Member Since: August 1, 2006 Posts: 28 Comments: 3716
291. TEXASYANKEE43
9:11 PM GMT on April 22, 2008
Whats wrong with Drak's image?
290. Drakoen
9:06 PM GMT on April 22, 2008
288. Levi32 9:03 PM GMT on April 22, 2008
287. Drakoen 12:59 PM AKDT on April 22, 2008 Hide this comment.
282. Thundercloud01221991 8:46 PM GMT on April 22, 2008
Draken will you please remove your image

I'm not able to and its probably better for you to use a different browser such as fire fox in this thread.

You can by modifying comment and deleting the image code. It isn't that bad of an image......might be a hassle for dial-up users I dunno....I just try to link most everything except the imageshack thumbnails which are really small.


Modify option doesn't work for me.
Member Since: October 28, 2006 Posts: 57 Comments: 30814
289. hahaguy
9:06 PM GMT on April 22, 2008
ya firefox works best on the blog
Member Since: August 12, 2007 Posts: 2 Comments: 2838
288. Levi32
9:03 PM GMT on April 22, 2008
287. Drakoen 12:59 PM AKDT on April 22, 2008 Hide this comment.
282. Thundercloud01221991 8:46 PM GMT on April 22, 2008
Draken will you please remove your image

I'm not able to and its probably better for you to use a different browser such as fire fox in this thread.


You can by modifying comment and deleting the image code. It isn't that bad of an image......might be a hassle for dial-up users I dunno....I just try to link most everything except the imageshack thumbnails which are really small.
Member Since: November 24, 2005 Posts: 635 Comments: 26700
287. Drakoen
8:59 PM GMT on April 22, 2008
282. Thundercloud01221991 8:46 PM GMT on April 22, 2008
Draken will you please remove your image


I'm not able to and its probably better for you to use a different browser such as fire fox in this thread.
Member Since: October 28, 2006 Posts: 57 Comments: 30814
286. weatherfromFlorida
8:54 PM GMT on April 22, 2008
looking back on last year, i would have to say this situation with the low to the NNE of Florida looks a lot like Andrea. Dry air, SST's are good enough, ULL devolping into a sub-tropical system.
20-30kt shear is minute compared to what Barry went through.
Member Since: March 22, 2008 Posts: 0 Comments: 77
285. extreme236
8:53 PM GMT on April 22, 2008
If it were June and these lows were out there, there would be a much better chance for development.
Member Since: August 2, 2007 Posts: 19 Comments: 19234
284. extreme236
8:51 PM GMT on April 22, 2008
Lots of dry air being entrained into the big low off Georgia/Carolinas. The one low NE of
Bermuda doesn't have much dry air effecting it but its over waters that are quite cool.
Member Since: August 2, 2007 Posts: 19 Comments: 19234
283. CaneAddict
8:50 PM GMT on April 22, 2008
281. weatherfromFlorida 8:44 PM GMT on April 22, 2008
2008's version of Andrea?


Possibly...
Member Since: October 5, 2007 Posts: 3 Comments: 2151
282. Thundercloud01221991
8:46 PM GMT on April 22, 2008
Draken will you please remove your image
Member Since: August 1, 2006 Posts: 28 Comments: 3716
281. weatherfromFlorida
8:44 PM GMT on April 22, 2008
2008's version of Andrea?
Member Since: March 22, 2008 Posts: 0 Comments: 77
280. CaneAddict
8:42 PM GMT on April 22, 2008
the shear over the one off the Carolina coast has about 20-30 knot shear over it at this time.

Shear is rapidly dropping also over that area, I still don't see any development occuring though.

MID/UPPER LOW JUST EAST OF THE CAROLINAS/GEORGIA WILL SUPPORT A
BROAD TROUGH ACROSS THE GREATER ANTILLES TO THE NORTHERN
CARIBBEAN. THROUGH 48 HRS THE TROUGH WILL AMPLIFY TO THE
SOUTH-SOUTHWEST ACROSS CUBA/JAMAICA TO THE WESTERN/CENTRAL
CARIBBEAN.
THIS IS FARTHER EAST THAN PREVIOUSLY ANTICIPATED. AT
250 HPA THE SUBTROPICAL JET ROUNDS THE BASE OF THE TROUGH...AND IT
IS TO GENERALLY MEANDER OVER THE GREATER ANTILLES. AT LOW LEVELS
THIS WILL SUSTAIN A BROAD TROUGH OFF THE SOUTHEAST COAST OF THE
USA WITH BASE NORTH OF THE ISLANDS. THE MEAN AXIS SHIFTS SLIGHTLY
EASTWARD BY 48 HRS...WHILE THE ASSOCIATED LOW STARTS TO EJECT TO
THE EAST-NORTHEAST. BY 72 HRS THE TROUGH WILL BECOME NARROW AND
ELONGATED AS IT EXTENDS ALONG 33N 50W TO THE BAHAMAS-CUBA.
FURTHERMORE...IN RESPONSE TO THE BROAD TROUGH PATTERN NORTH OF THE
ISLANDS...AN 850 HPA INVERTED TROUGH IS TO GRADUALLY DEVELOP OVER
THE EASTERN CARIBBEAN ALONG 67W BY 24 HRS. THE TROUGH WILL THEN
MOVE JUST WEST OF 70W BY 48 HRS... AND BY 72-84 HRS IT WILL START
TO DAMPEN.


Although it has happened yet, When a trough gets to the Caribbean that would be where we could see some kind of development, If however shear was to be favorable...Not saying anything would just saying the Caribbean is indeed a main early-development area.
Member Since: October 5, 2007 Posts: 3 Comments: 2151
279. Ivansrvivr
8:09 PM GMT on April 22, 2008
There just isn't warm water to support major tropical development under that upper low. It would have to do a "Noel" move from last season southward into Caribbean to fund sufficient heat energy to go tropical on us. In previous seasons the waters off Florida and Carolinas was much warmer going into May. The main threats from these type systems whether they be sub-tropical or not is coastal beach erosion and for shipping.

Adding to StormWs comment, the Bermuda High was so strong and so far west last season, it squashed developing systems and pumped dry "CONUS" continental air and cold upper lows into tropics through the entire season. Normally the Bermuda high does the opposite drawing tropical moisture northward into the S.E US. The result was drought/heatwave for much of the Southern States. I don't think that will happen again this season.
278. hurricane23
8:02 PM GMT on April 22, 2008
westerly QBO phase appears to affect genesis of tropical systems in the central and eastern Atlantic 2005 had little activity in that area along with 95.
Member Since: May 14, 2006 Posts: 8 Comments: 13841
277. HadesGodWyvern (Mod)
7:58 PM GMT on April 22, 2008
Tropical Cyclone Warning Center Jakarta
Tropical Cyclone Advisory #2
18:00 UTC April 22, 2008


At 1:00 AM WIB, Tropical Depression (996 hPa)located near 9.5S 95.1E has 10 minute sustained winds of 30 knots with gusts up to 45 knots and was estimated as 1010 kilometres southwest of Bengkulu and 1330 kilometres west southwest of Jakarta. The depression is reported moving east southeast at 66 kilometres per hour.

The depression is expected to develop into a TROPICAL CYCLONE within the next six to twelve hours.

Extreme weather is expected to develop caused by this tropical depression.

Probability of moderate into heavy rain and strong wind in West Sumatera, Weastern of South Sumatera, Western and Southern of West Java


Cyclone Alerts
==================
A CYCLONE WARNING for a Tropical Depression has been declared continues for areas Lebak, Pandeglang, Serang, Bengkulu Selatan, Bengkulu Utara, Rejang Lebong, Bandung, Ciamis, Cianjur, Garut, Kodya Bandung, Kodya Bogor, Kodya Sukabumi, Sukabumi, Tasikmalaya, Cilacap, Kodya Bandar Lampung, Lampung Barat, Lampung Selatan, Kodya Padang, Kodya Solok, Padang Pariaman, Pesisir Selatan, Sawahlunto-Sijunjung, Solok, Tanah Datar, Lahat and Musi Rawas.

---
moving east-southeast at 35 knots.. wonder if that is a mistake on TCWC Jakarta part.
Member Since: May 24, 2006 Posts: 52 Comments: 46907
276. TerraNova
7:56 PM GMT on April 22, 2008
Thanks StormW! I think Klotzbach's feedback regarding a possible favorable shift in the QBO is very significant indeed...
Member Since: July 30, 2007 Posts: 76 Comments: 4063
275. weathermanwannabe
7:55 PM GMT on April 22, 2008
272. StormW 3:51 PM EDT on April 22, 2008

I'd say you are probably in the Ballpark.....
Member Since: August 8, 2006 Posts: 0 Comments: 9402
274. Thundercloud01221991
7:52 PM GMT on April 22, 2008
get rid of that image
Member Since: August 1, 2006 Posts: 28 Comments: 3716
273. TerraNova
7:52 PM GMT on April 22, 2008
So would this just take an Andrea course if it were to form or would it be more threatening and does the other low stand a chance of forming?

Regardless of whether this forms or not, yes, it will not impact land, but it is not out of the question that Bermuda may get a few showers and storms from this. It would follow a course to the east, away from the course, then gradually turn northeast.

A havn't really looked at the other two troughs in the Atlantic, but I doubt they've got anything in the way of development.
Member Since: July 30, 2007 Posts: 76 Comments: 4063
271. weathermanwannabe
7:51 PM GMT on April 22, 2008
Don't know about sub-tropical systems, but, generally, two low pressure systems do not each develop significantly when in relatively close proximity; the dominant low will win the race and the Carolina's system has the best chance of development right now, if at all......Still looks like a pretty naked, but well organized, swirl to me right now........
Member Since: August 8, 2006 Posts: 0 Comments: 9402
270. extreme236
7:51 PM GMT on April 22, 2008
the shear over the one off the Carolina coast has about 20-30 knot shear over it at this time.
Member Since: August 2, 2007 Posts: 19 Comments: 19234
269. Levi32
7:49 PM GMT on April 22, 2008
The other low is going to be absorbed into the northern one.......and if this develops into anything, which is unlikely, then it would just head out east and eventually be picked up out to sea by a trough in 3 days and become extratropical. No threat to land really.
Member Since: November 24, 2005 Posts: 635 Comments: 26700
268. hurricane23
7:47 PM GMT on April 22, 2008
TerraNova its an upper level low with slim chances at becoming anything close to tropical or even sub-tropical.Models have somewhat backed away from there earlier solution.Oh cmc please stop that!I can just imagine folks here when the cmc and gfs start putting out three phantom cat'5 rolling through south florida.The area is pretty much covered with pockets of 30-50kts of windshear.
Member Since: May 14, 2006 Posts: 8 Comments: 13841
267. all4hurricanes
7:45 PM GMT on April 22, 2008
So would this just take an Andrea course if it were to form or would it be more threatening and does the other low stand a chance of forming?
Member Since: March 29, 2008 Posts: 0 Comments: 2375
266. Drakoen
7:45 PM GMT on April 22, 2008
Member Since: October 28, 2006 Posts: 57 Comments: 30814
265. Levi32
7:43 PM GMT on April 22, 2008
Levi, you have to consider the models anyhow, nomatter what type of storm you're looking for. Also you must consider the environment this is in; and that it will absorb another cold core system in a day or so. Sea surface temperatures are not conductive for any sort of adavanced development except for the narrow slip that is the Gulf stream, and this system would have to nearly stall there for a prolonged period of time to gain enough energy to warm. All of the models, supported by the current pattern (and you don't need computer models to show that), forecast this system to be pulled to the southeast, then east, then north, in the wake of the easternmost through. This won't give it enough time to collect enough energy to warm it's core.

It does look nice though, you have to admit.


2 things lots of people know about me......one I always get mistaken for hyping development when I'm not lol, two....I love models but I use them as tools not my guide leading my blind self lol. I just hate sub-tropical situations.........yes conditions are pretty horrid for any kind of development, but again sub-tropical systems don't need much, and this is going to be a nasty rogue storm at the very least.
Member Since: November 24, 2005 Posts: 635 Comments: 26700
264. TerraNova
7:41 PM GMT on April 22, 2008
H23, whats your opinion on this system?
Member Since: July 30, 2007 Posts: 76 Comments: 4063
263. extreme236
7:41 PM GMT on April 22, 2008
Remember though, subtropical systems do not need warm cores, but its an important tropical characteristic and often times the NHC is reluctant to classify systems without a warm core.
Member Since: August 2, 2007 Posts: 19 Comments: 19234
262. hurricane23
7:40 PM GMT on April 22, 2008


CLICK HERE for larger view!
Member Since: May 14, 2006 Posts: 8 Comments: 13841
261. TerraNova
7:38 PM GMT on April 22, 2008
Folks after doing some real looking at some models and looking at whats present the most likely outcome for this season in my personal opinion is neutral or weak la nina.It will likely maintain itself but futher intensification is not in the making from what i see.

Afternoon H23; I agree with your assessment.
Member Since: July 30, 2007 Posts: 76 Comments: 4063
260. TerraNova
7:37 PM GMT on April 22, 2008
I don't really care for the models when it comes to sub-tropical systems. These kinds of situations are such a mess as it is, and the computers usually don't make much sense of the data either. To me the sub-tropical category(wherever the boundaries of that are) is a whole different realm, that can produce order out of chaos when you would least expect it, or can just remain chaotic lol. I'm just looking forward to seeing how this system evolves.....it already has a well-defined circulation from top to bottom including at the surface......and the 850mb vort max is extremely impressive. This system packs quite a punch, we'll see where all that energy goes.

Levi, you have to consider the models anyhow, nomatter what type of storm you're looking for. Also you must consider the environment this is in; and that it will absorb another cold core system in a day or so. Sea surface temperatures are not conductive for any sort of adavanced development except for the narrow slip that is the Gulf stream, and this system would have to nearly stall there for a prolonged period of time to gain enough energy to warm. All of the models, supported by the current pattern (and you don't need computer models to show that), forecast this system to be pulled to the southeast, then east, then north, in the wake of the easternmost through. This won't give it enough time to collect enough energy to warm it's core.

It does look nice though, you have to admit.
Member Since: July 30, 2007 Posts: 76 Comments: 4063
259. extreme236
7:37 PM GMT on April 22, 2008
That area near the Bahamas looks interesting...nothing likely to happen but in this off-season its better than nothing I guess.

I agree with your assessment on ENSO 23...I noticed the SOI isn't dropping much right now and neutral looks likely.
Member Since: August 2, 2007 Posts: 19 Comments: 19234
258. hurricane23
7:34 PM GMT on April 22, 2008
Folks after doing some real looking at some models and looking at whats present the most likely outcome for this season in my personal opinion is neutral or weak la nina.It will likely maintain itself but futher intensification is not in the making from what i see.
Member Since: May 14, 2006 Posts: 8 Comments: 13841
256. hurricane23
7:33 PM GMT on April 22, 2008
.
Member Since: May 14, 2006 Posts: 8 Comments: 13841
255. Drakoen
7:31 PM GMT on April 22, 2008
251. moonlightcowboy 7:26 PM GMT on April 22, 2008
Ok, Drak! lol, could you please elaborate there, too - in layman Engrish? lol

Nice big look around, Vort!

I'm out, too, for a bit!


Lower pressure= more instability, adiabatic convection, deeper areas of low pressure.
Member Since: October 28, 2006 Posts: 57 Comments: 30814
254. TerraNova
7:30 PM GMT on April 22, 2008
Ok, Drak! lol, could you please elaborate there, too - in layman Engrish? lol

Negative MSLP I think gives organizing thunderstorms an "edge"; and it makes it easier for a center of low pressure to establish itself...this wouldn't be great news for those praying for a calm CV season.

See ya, MLC, there's been so much great discussion around lately I'm practically taken notes down on a notepad so I can use it to make my own predictions!
Member Since: July 30, 2007 Posts: 76 Comments: 4063
253. Levi32
7:30 PM GMT on April 22, 2008
I don't really care for the models when it comes to sub-tropical systems. These kinds of situations are such a mess as it is, and the computers usually don't make much sense of the data either. To me the sub-tropical category(wherever the boundaries of that are) is a whole different realm, that can produce order out of chaos when you would least expect it, or can just remain chaotic lol. I'm just looking forward to seeing how this system evolves.....it already has a well-defined circulation from top to bottom including at the surface......and the 850mb vort max is extremely impressive. This system packs quite a punch, we'll see where all that energy goes.
Member Since: November 24, 2005 Posts: 635 Comments: 26700
252. TerraNova
7:27 PM GMT on April 22, 2008
218. StormW 5:11 PM GMT on April 22, 2008
Just looking at the CFS model (Accuweather Pro Site)...it's calling for MSLP anomaly departures in most of the CATL during the Cape Verde season on the order of -1.5 to -2.5 mb

BBL.


Thats significant...


That would give emerging tropical waves an edge if I understand correctly...
Member Since: July 30, 2007 Posts: 76 Comments: 4063
251. moonlightcowboy
7:26 PM GMT on April 22, 2008
Ok, Drak! lol, could you please elaborate there, too - in layman Engrish? lol

Nice big look around, Vort!

I'm out, too, for a bit!
Member Since: July 9, 2006 Posts: 184 Comments: 29610
250. KEEPEROFTHEGATE (Mod)
7:12 PM GMT on April 22, 2008
track mark 77.1w/32.9n ull
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249. Starwoman
9:19 PM CEST on April 22, 2008
re: 245

oh.. that's wunderfull... nice to see everything at once *s*
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248. Drakoen
7:21 PM GMT on April 22, 2008
218. StormW 5:11 PM GMT on April 22, 2008
Just looking at the CFS model (Accuweather Pro Site)...it's calling for MSLP anomaly departures in most of the CATL during the Cape Verde season on the order of -1.5 to -2.5 mb

BBL.



Thats significant...
Member Since: October 28, 2006 Posts: 57 Comments: 30814

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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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