Dr. Jeff Masters' WunderBlog

95L fizzles; Sierras brace for 5-10 feet of snow
Posted by: Dr. Jeff Masters, 12:10 AM GMT on December 31, 2007 +2
A non-tropical low pressure system dubbed Invest 95L, near 27N 38W, way out in the middle of the Atlantic Ocean, has gotten less organized since yesterday. The storm cut off from the jet stream and acquired some subtropical characteristics yesterday, as it sat nearly stationary over waters of 22-23° C. However, satellite imagery shows fewer heavy thunderstorms than yesterday, and the storm has a more extratropical appearance as it interacts with a cold front to its north.

This evening's QuikSCAT pass showed winds up to 50 mph on the west side of 95L. Wind shear is about 30 knots over 95L, and this shear is expected to be 20-40 knots for the next two days. This is probably too high to allow 95L to develop into a subtropical storm, and wind shear is forecast to grow stronger as the storm begins moving west-southwest on Tuesday. By Thursday, a trough of low pressure is expected to recurve 95L northeastward, and the storm is not expected to affect any land areas.

Huge blizzard expected in the California Sierras
One of the most severe blizzards of the past 50 years is expected to affect California's Sierra Mountains beginning Thursday night, January 3. A powerful low pressure system will establish itself off the coast of Oregon, and bring a series of heavy snow events with blizzard conditions to the Sierras through Monday. Five to ten feet of snow are possible in the high mountains. Travel will be nearly impossible in the high country next weekend, with white-out conditions and wind gusts near hurricane strength. This is going to be a great storm for filling the reservoirs that supply the northern half of the state with its water. Reservoirs should be at full capacity next summer, easing fears of a significant water shortage. Last winter's snows failed to fill the reservoirs to even 50% of capacity.


Figure 1. Estimated rainfall for December 30 for Georgia. Atlanta got one of its heaviest rains of the year today.

Happy New Year! I'll be back January 2 to talk about the Georgia drought. Heavy rains that fell today may have been just enough to keep Atlanta from setting a record for its driest year since record keeping began in 1930.

Jeff Masters
Categories: Winter Weather
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1. extreme236 12:13 AM GMT on December 31, 2007    
Thanks for the update
Member Since: August 2, 2007 Posts: 19 Comments: 19234
2. sngalla 12:14 AM GMT on December 31, 2007    
Happy New Year Dr Masters!!
Member Since: February 18, 2003 Posts: 57 Comments: 5363
3. Tazmanian 12:16 AM GMT on December 31, 2007    
thanks doc
Member Since: May 21, 2006 Posts: 5088 Comments: 111327
4. LakeShadow 12:20 AM GMT on December 31, 2007    
Thanks Dr. M.
Happy New Year to you and your staff.
Member Since: August 10, 2007 Posts: 3 Comments: 2134
5. Tazmanian 12:21 AM GMT on December 31, 2007    
wow wow and wow! 5 to 10ft of snow this is going to to be a evere now and then 50 year storm
Member Since: May 21, 2006 Posts: 5088 Comments: 111327
6. KEEPEROFTHEGATE (Mod) 12:23 AM GMT on December 31, 2007    
happy new year doc
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7. KEEPEROFTHEGATE (Mod) 12:26 AM GMT on December 31, 2007    
for some reason i gonna give this another night
before a long winter nap
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8. bbreaker 12:27 AM GMT on December 31, 2007    
Happy New Years to Dr. Masters and his entire Staff and to all who read this !!!!
9. LakeShadow 12:28 AM GMT on December 31, 2007    
Thats a whole bunch of snow. Thats snow up to the roof...can you imagine what drifts will be like? wow... I've seen 7ft snowfalls...its incredible.
Member Since: August 10, 2007 Posts: 3 Comments: 2134
11. extreme236 12:31 AM GMT on December 31, 2007    
IDK...for some reason I feel like 95L still has potential...not as much as before, but still some left.
Member Since: August 2, 2007 Posts: 19 Comments: 19234
13. mermaidlaw 12:32 AM GMT on December 31, 2007    
Happy New Year DR. Masters!!!

Thank you and staff, for what you do here! It truely means alot to many here!!
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14. KEEPEROFTHEGATE (Mod) 12:33 AM GMT on December 31, 2007    
have fun trackin snow taz
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15. HadesGodWyvern 12:33 AM GMT on December 31, 2007    
Tropical Cyclone Warning #2
=============================================
At 0:00 AM UTC, Tropical Disturbance [1000 hPa] located near 18.3S 42.0E or 1420 kms west-northwest of the coast of Reunion had 10 minute sustained winds of 25 knots with gusts up to 35 knots. The disturbance is reported as quasi-stationary

Dvorak Intensity: T2.0

Forecast and Intensity
======================
24 HRS: 19.2S 41.9E 40 knots (Tempête Tropicale Moderée)
48 HRS: 20.3S 41.7E 70 knots (CYCLONE Tropicale)

Additional Information
========================
Environment is still favorable, so intensification is forecast. During Jan 01, 2008, an upper level trough is forecast to build southwestward of the system. This should enhance poleward outflow and consequently improve the upper level divergence. That is why intensification rate is a little stronger than climatology. This system could be close to Intense Tropical Cyclone stage (90 knots) at the end of the forecast period.

The track should progressively take a more southerly motion still at low speed today before accelerating. During Jan 2nd 2008 a subtropical ridge is moving away in the southern Mozambique Channel.

NWP model run has slightly moved thier tracks eastward so that is the case of the presen guidance that is close to the ECMWF solution.
Member Since: May 24, 2006 Posts: 43 Comments: 36686
16. Tazmanian 12:34 AM GMT on December 31, 2007    
for got to post this look at the T # it no longet has a STS with the T #

30/2330 UTC 26.9N 34.9W T1.5/1.5 95L -- Atlantic Ocean
Member Since: May 21, 2006 Posts: 5088 Comments: 111327
17. Tazmanian 12:35 AM GMT on December 31, 2007    
thanks keep



by the way how march is 10ft of snow in "
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19. CatastrophicDL 12:39 AM GMT on December 31, 2007    
Thanks Dr. Masters! My son is traveling to CA on Saturday, hopefully this storm won't affect him too much!
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20. KEEPEROFTHEGATE (Mod) 12:49 AM GMT on December 31, 2007    
over 100 after that dosent matter
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21. aquak9 12:51 AM GMT on December 31, 2007    
10 feet of snow is 120 inches, Taz.
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22. KEEPEROFTHEGATE (Mod) 12:50 AM GMT on December 31, 2007    
10 ft 120 inches
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23. HadesGodWyvern 12:53 AM GMT on December 31, 2007    
10x12 taz ;-)
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24. Tazmanian 12:56 AM GMT on December 31, 2007    
wow 120" of snow are mts wont take that march snow
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25. extreme236 12:58 AM GMT on December 31, 2007    
Wow...Meteo France forecasts 06R to become a Intense Tropical Cyclone (highest classification for cyclones there) in 72 hours...currently it is a Perturbation Tropicale
Member Since: August 2, 2007 Posts: 19 Comments: 19234
26. HadesGodWyvern 1:01 AM GMT on December 31, 2007    
actually Tres Intense Cyclone Tropicale is the highest rating for the sw indian ocean
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27. extreme236 1:02 AM GMT on December 31, 2007    
Oh it is? Hmm didnt know that lol
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28. extreme236 1:02 AM GMT on December 31, 2007    
As soon as dvorak ratings hit T2.5 we should see MF upgrade 06R to a moderate TS
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29. HadesGodWyvern 1:06 AM GMT on December 31, 2007    
either T2.5 or T3.0 is when Seychelles will name the system.
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30. HadesGodWyvern 1:14 AM GMT on December 31, 2007    
Western Australia Tropical Cyclone Advisory Number One
=============================================

At 0000 UTC Tropical Low [994 hPa] located near 8.0S 97.2E has 10 minute sustained winds of 30 knots with gusts up to 40 knots and is moving east at 8 knots.

AREA AFFECTED
Within 120 nautical miles in northern quadrants
Member Since: May 24, 2006 Posts: 43 Comments: 36686
31. HadesGodWyvern 1:16 AM GMT on December 31, 2007    
well here comes Nicholas...
Member Since: May 24, 2006 Posts: 43 Comments: 36686
32. hurricane23 1:18 AM GMT on December 31, 2007    
Went poof....Its not august folks tropical cyclones this time of year are rare.

Happy New Year to all!

Adrian's Hurricane Archives

More to come.
Member Since: May 14, 2006 Posts: 8 Comments: 13274
33. JLPR 1:30 AM GMT on December 31, 2007    
wow
I was just watching some satellites pics of Isabel in 2003 while it passed north of PR wow big system PR was lucky it didnt passed through here if it did it would have being one day landfall another sunny and calm(the eye) and the other one the second half lol
Member Since: September 4, 2007 Posts: 36 Comments: 5223
34. HadesGodWyvern 1:36 AM GMT on December 31, 2007    
As of 0:00 AM UTC, Tropical Cyclone Melanie [976 hPa] located near 18.7S 112.0E has 10 minute sustained winds of 50 knots with gusts up to 70 knots. The cyclone is moving west-northwest at 4 knots.

AREA AFFECTED
Within 120 nautical miles of the centre.

FORECAST
Maximum winds to 50 knots near the centre decreasing to 35 knots by 0000 UTC 01January.

Storm Force Winds within 35 nautical miles of centre until 0600 UTC 31December with very rough to high seas and moderate to heavy swell.

Gale Force Winds within 120 nautical miles of centre with rough to very rough seas and moderate swell.

Forecast and Intensity
====================
24 HRS - 18.8S 111.0E 35 knots [CAT 1]
48 HRS - 19.6S 109.4E 30 knots [Tropical Low]
Member Since: May 24, 2006 Posts: 43 Comments: 36686
35. Tazmanian 1:45 AM GMT on December 31, 2007    
if any one is going up to are mts for new years make sure you get back home be for wed night or it may be a few days or longer to get back down from the mts
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36. JLPR 1:56 AM GMT on December 31, 2007    


umm looks like the remains of 95L could clash with the cold front and generate some active weather around the islands
Member Since: September 4, 2007 Posts: 36 Comments: 5223
37. hydrus 2:01 AM GMT on December 31, 2007    
JLPR-
the mets said the eye was 60 n.m.in cat-5-isabel,and they said the low that became isabel came from the red sea region.
Member Since: September 27, 2007 Posts: 1 Comments: 14248
38. JLPR 2:01 AM GMT on December 31, 2007    
looks like 95l is starting to move west
Member Since: September 4, 2007 Posts: 36 Comments: 5223
39. JLPR 2:08 AM GMT on December 31, 2007    
wow hydrus PR is only 110(length) X 40(width) so the eye would had almost over us completely amazing =P
Member Since: September 4, 2007 Posts: 36 Comments: 5223
41. JLPR 2:09 AM GMT on December 31, 2007    
sad that i started tracking tropical systems on 2004 i would had loved to track Isabel =(
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42. hydrus 2:11 AM GMT on December 31, 2007    
JLPR-how can you tell its moving west?
Member Since: September 27, 2007 Posts: 1 Comments: 14248
43. hydrus 2:14 AM GMT on December 31, 2007    
JLPR-they have the entire sat loop of that storm,if you can find it,it is worth seeing.
Member Since: September 27, 2007 Posts: 1 Comments: 14248
44. hydrus 2:18 AM GMT on December 31, 2007    
JLPR-was the last cat 5 to hit p.r.in 1928?
Member Since: September 27, 2007 Posts: 1 Comments: 14248
45. BahaHurican 2:30 AM GMT on December 31, 2007    
18. StSimonsIslandGAGuy 7:36 PM EST on December 30, 2007
And as for 95L and the 2007 hurricane season---nothing more to say than this :)

Link


The only thing missing from this skit is a crow . . . lol
Member Since: October 25, 2005 Posts: 19 Comments: 17610
46. KEEPEROFTHEGATE (Mod) 2:41 AM GMT on December 31, 2007    
invest 95l
track mark
35w/27.5n
36w/26.9n
37w/26.7n
38w/26.3n
39w/26.1n
40w/25.9n
41w/25.8n 01/01/08 GMT
....stop....
Member Since: July 15, 2006 Posts: 143 Comments: 40436
47. extreme236 2:44 AM GMT on December 31, 2007    
95L really doesnt look to bad right now...the system has a rather baroclinic appearance but there is more convection than earlier near the center...guess we wil have to see what happens with it.
Member Since: August 2, 2007 Posts: 19 Comments: 19234
48. extreme236 2:44 AM GMT on December 31, 2007    
Good night all
Member Since: August 2, 2007 Posts: 19 Comments: 19234
49. JLPR 2:47 AM GMT on December 31, 2007    
hydrus thats correct hurricane San Felipe in 1928 with 160 mph

yep here is the isabel loop Link

and how can i tell that is moving west well I think I saw a little turn in sat imagery

sorry for not answering sooner was busy doing other stuff =P
Member Since: September 4, 2007 Posts: 36 Comments: 5223
50. BahaHurican 2:53 AM GMT on December 31, 2007    
33. JLPR 8:30 PM EST on December 30, 2007
wow
I was just watching some satellites pics of Isabel in 2003 while it passed north of PR wow big system PR was lucky it didnt passed through here if it did it would have being one day landfall another sunny and calm(the eye) and the other one the second half lol


My avatar is Hurricane Isabel on Sept. 12. 2003. I think this is one of the most beautiful hurricanes imaged since we started the satellite era. If u click on my avatar, you will be able to see the clarity and regularity of Isabel's eye. This is an astounding sight.
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51. Tazmanian 2:55 AM GMT on December 31, 2007    
99W now where is 99W oh 98W is gone

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About JeffMasters
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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