Dr. Jeff Masters' WunderBlog

More heat; Gulf of Mexico disturbance
Posted by: Dr. Jeff Masters, 4:32 PM GMT en Julio 23, 2006 +0
The heat was unrelenting yesterday across the Southwest U.S., where most of California and Arizona set new high temperature records. The 99 degrees in downtown Los Angeles beat the old record of 96 set in 1960, and the suburb of Woodland Hills hit a record 119. All the cities in California's Central Valley set records: 109 degrees in Sacramento, 111 in Redding, and 112 in Red Bluff, Stockton and Modesto. San Francisco's 87 degrees easily beat the record of 81 for the date, set back in 1917.

In Phoenix, this morning's low temperature was 97 degrees, which broke the all-time record for highest low temperature ever recorded in that city (96, set on Jul 15, 2003). Tucson's low of 89 Saturday morning was its highest low temperature in recorded history, as well. The temperature topped out at record 116 in Phoenix yesterday, and 121 in nearby Gila Bend.

Tropical update
An area of disturbed weather continues over the southwestern Gulf of Mexico. Wind shear is over 20 knots in this region, which is too high to allow development today. Both the GFS and NOGAPS models are forecasting this shear to be 15 knots or higher over the next few days, and usually one needs wind shear to fall to the 10-15 knot range for development. However, the NHC is playing it cautiously and has put a Hunter airplane on call for Monday, if needed. I'll be surprised if this flight happens.


Figure 1. Preliminary model forecast tracks for the area of disturbed weather in the Southwest Gulf of Mexico.

Enjoy another quiet weekend in the tropics, everyone!
Jeff Masters
Categories: Heat
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1. Tazmanian 4:34 PM GMT en Julio 23, 2006    
GOOD BOY DR M LOL
Member Since: Mayo 21, 2006 Posts: 5089 Comments: 111615
2. Tazmanian 4:35 PM GMT en Julio 23, 2006    
now i am happy with the update
Member Since: Mayo 21, 2006 Posts: 5089 Comments: 111615
3. Cavin Rawlins 4:37 PM GMT en Julio 23, 2006    
littlefish, I get what you are saying, but this is not 2005, its 2006, storms that develop from waves that came from africa, like any normal year, is for August and September.

June and July, is left for old cold fronts, upper level lows and disturbances from off central america, like any normal year.
Member Since: Julio 24, 2005 Posts: 407 Comments: 19076
4. Cavin Rawlins 4:38 PM GMT en Julio 23, 2006    
Posted By: SWLAStormFanatic at 12:29 PM AST on July 23, 2006.
When is the plane scheduled for BOC? Any thoughts on this disturbance?


Monday. And it as a chance to develop, if it stays over water and wind shear decreases.
Member Since: Julio 24, 2005 Posts: 407 Comments: 19076
5. SWLAStormFanatic 4:40 PM GMT en Julio 23, 2006    
I got you both times 456, thanks!
6. Cavin Rawlins 4:40 PM GMT en Julio 23, 2006    
However, the NHC is playing it cautiously and has put a Hunter airplane on call for Monday, if needed. I'll be surprised if this flight happens.

the tropics is full of suprises.
Member Since: Julio 24, 2005 Posts: 407 Comments: 19076
7. Raysfan70 4:41 PM GMT en Julio 23, 2006    
here it is from the Hurricane Hunter himself. Watch his blog for updates:

Posted By: LRandyB at 7:44 AM EDT on July 23, 2006.
Well, I got to work only to discover NHC canceled us for today and tonight. We still have possible tasking into the Bay of Campeche tomorrow.


You can get first hand from him. And check out his pictures from Beryl and others.

Member Since: Julio 28, 2005 Posts: 138 Comments: 57353
8. SAINTHURRIFAN 4:43 PM GMT en Julio 23, 2006    
dr masters you really need to adjust your wu shear map it shows light to moderate shear nothing in the 20 knot range is this link messed up by the way 456 this center could form further north or east in more favorable area 456 look at wu shear map bob said last night it was not accurate well why dont they fix it im more inclined to trust bob lol is the steering flow out of the sw seems this thing would have to move more n or e where shear is less any opinions
Member Since: Agosto 20, 2005 Posts: 5 Comments: 668
9. Cavin Rawlins 4:52 PM GMT en Julio 23, 2006    
right saint, the NHC wouldnt say that wind shear will become favourable if they knew it was to remain high.

Remember the NHC loves to say "Upper level Winds are not conducive for developemnt"

So i'm holding onto the NHC....but 98L cloud tops have warmed.

but still at 1009 mbar, 25knots (30mph)

Member Since: Julio 24, 2005 Posts: 407 Comments: 19076
10. Tazmanian 4:54 PM GMT en Julio 23, 2006    
cloud tops have warmed.

456 dos that mean it is geting stornger as wel talk?
Member Since: Mayo 21, 2006 Posts: 5089 Comments: 111615
11. Zaphod 4:56 PM GMT en Julio 23, 2006    
Cold cloud tops mean strengthening.
Member Since: Octubre 5, 2005 Posts: 15 Comments: 3239
12. WSI 4:57 PM GMT en Julio 23, 2006    
"WSI you need to check the Fermi labs SST charts, they are much more detailed than what you are looking at on that link. The temnps in the Gulf are warmer than they were last year at this time...."

So you are telling me NOAA is totally wrong? The maps I looked at showed the total opposite of what you an SJ are claiming. Detail or not, the conclusion can't be THAT far off. Sure, maybe in spots here and there it may be warmer. Then again in spots its cooler. Overall everything I have seen shows its cooler.

Even the anomalies show the water is right where it should be in the areas you describe. Heck, the east coast was even cooler than normal for a while. Yes, I know this doesn't compare them to last year alone, but the point is the SST's are not as hot as some are making them out to be. Turtle had a blog describing the warm water in the northern Atlantic. Pretty interesting.

Even in the maps that SJ has in his blog, the east coast looks cooler over all.

I just think too much is being made of SST's right now being "warmer".


14. Cavin Rawlins 4:59 PM GMT en Julio 23, 2006    
Cold cloud tops-strong storm
Warm Cloudtops-weak storm

In other words 98L has decrease in convection.

Member Since: Julio 24, 2005 Posts: 407 Comments: 19076
15. Tazmanian 5:00 PM GMT en Julio 23, 2006    
oh well bye bye 98L
Member Since: Mayo 21, 2006 Posts: 5089 Comments: 111615
16. putintang3 5:03 PM GMT en Julio 23, 2006    
hi, i am on the south cental La coast they say the high should be rebuiding over us again in the next couple of days, so that should keep away any thing coming this way.
Member Since: Agosto 29, 2005 Posts: 2 Comments: 300
17. Cavin Rawlins 5:03 PM GMT en Julio 23, 2006    
Taz, not so fast, 98L isnt over....convection just simply decrease......it could come back.

why are we comparing 2005 SST's to 2006 SST's, we all know 2006 will not repeat 2005.
Member Since: Julio 24, 2005 Posts: 407 Comments: 19076
18. Tazmanian 5:04 PM GMT en Julio 23, 2006    
ok 456
Member Since: Mayo 21, 2006 Posts: 5089 Comments: 111615
19. WSI 5:06 PM GMT en Julio 23, 2006    
"why are we comparing 2005 SST's to 2006 SST's, we all know 2006 will not repeat 2005."

Occured in the older blog before this one.

I agree with you about the comparisons. I just think too much is being made of the SST's. I don't see them as warm as others here.
20. Skyepony (Mod) 5:14 PM GMT en Julio 23, 2006    
I expected the cloud tops to warm up, it happens on a daily basis as the sun starts beating on them. In an unorganized storm like this invest it's normal. Looks like some convection is beginning to build in the west end of the BOC, but I expect it to really fire up again a well after sunset as long as Emilia keeps the blob shoved out over water.
Member Since: Agosto 10, 2005 Posts: 145 Comments: 29957
23. StormThug 5:45 PM GMT en Julio 23, 2006    
we'll eventually get a hurricane be patient
Member Since: Junio 15, 2006 Posts: 9 Comments: 480
24. Cavin Rawlins 5:47 PM GMT en Julio 23, 2006    
Posted By: TropicalTerror at 1:38 PM AST on July 23, 2006.
this sucks i want a damn hurricane, BOOO mother nature, BOOOO


there is one in the eastern pacfic
Member Since: Julio 24, 2005 Posts: 407 Comments: 19076
25. Cavin Rawlins 5:48 PM GMT en Julio 23, 2006    
if people are feeling so now, imagine how they was in 2004.
Member Since: Julio 24, 2005 Posts: 407 Comments: 19076
26. palmettobug53 5:49 PM GMT en Julio 23, 2006    
Terror, be careful what you wish for. It just might come back and bite you!

A tad off topic, but relevant to the build up on our coastal areas at risk for hurricanes:
Too Many People on the Shore
Member Since: Octubre 7, 2005 Posts: 208 Comments: 21684
27. HadesGodWyvern 5:51 PM GMT en Julio 23, 2006    
lol there has been several in the east pacific. Possibly one more to be added soon (EMILIA)
Member Since: Mayo 24, 2006 Posts: 43 Comments: 36926
28. StormThug 5:52 PM GMT en Julio 23, 2006    
the boc blob has a chance if it can survive until the shear dies down.
Member Since: Junio 15, 2006 Posts: 9 Comments: 480
29. observer12 5:53 PM GMT en Julio 23, 2006    
so, the story recently has been a lots o' Saharan dust over the Atlantic. this has probably shown up as a thread in a previous entry, but what does everyone think about global warming moderating its own impacts on tropical systems?

as rainfall becomes more variable, combined with the already expanding Saharan desert (as a result of overgrazing and other factors), will added dust prevent more storms from forming, even though water temperatures may be higher? Dr. Masters, have analyses of tropical storms (their frequency and their intensity) included Saharan dust coverage or density as a covariate?
30. SAINTHURRIFAN 5:53 PM GMT en Julio 23, 2006    
surface low forms at 21 and 94 slowly moving north from w/c and marine disscusion nhc
Member Since: Agosto 20, 2005 Posts: 5 Comments: 668
31. StormThug 5:58 PM GMT en Julio 23, 2006    
the conditions are setting up for a storm in the gulf this week
Member Since: Junio 15, 2006 Posts: 9 Comments: 480
32. nola70119 5:58 PM GMT en Julio 23, 2006    
http://fermi.jhuapl.edu/avhrr/gm/averages/06jul/gm_06jul22_2341_mult.png

This is the chart from yesterday.
Member Since: Junio 16, 2006 Posts: 0 Comments: 1535
33. nola70119 6:00 PM GMT en Julio 23, 2006    
http://srbdata.jhuapl.edu/d0043/avhrr/gm/averages/05jul/gm_05jul22_0335_mult.png

This is last years chart for the Gulf.
Member Since: Junio 16, 2006 Posts: 0 Comments: 1535
34. nola70119 6:02 PM GMT en Julio 23, 2006    
As you can see, the SST in the Gulf are higher than they were last year and the year before, when we had Cat 5 Ivan.
Member Since: Junio 16, 2006 Posts: 0 Comments: 1535
35. StormThug 6:03 PM GMT en Julio 23, 2006    
yeah thats not good
Member Since: Junio 15, 2006 Posts: 9 Comments: 480
36. caneman 6:06 PM GMT en Julio 23, 2006    
All tropical blobs must die!
Member Since: Mayo 27, 2003 Posts: 14 Comments: 98
38. HadesGodWyvern 6:10 PM GMT en Julio 23, 2006    


Think I saw a model run form this into a storm.
Member Since: Mayo 24, 2006 Posts: 43 Comments: 36926
40. lightning10 6:13 PM GMT en Julio 23, 2006    
I would like to report a very very heavy downpoor over the Whittier, CA area. Lots of lightning. A lor of rain fell in a few moments. I took a lot of pics of it and a video.
Member Since: Noviembre 24, 2005 Posts: 41 Comments: 629
41. C2News 6:15 PM GMT en Julio 23, 2006    
tropical downpours over northeast florida with 50 mph winds
Member Since: Julio 17, 2006 Posts: 73 Comments: 622
42. Skyepony (Mod) 6:16 PM GMT en Julio 23, 2006    
The 12Z cmc looks a bit scary for the Bahamas. The 12z GFS keeps that cape verde very weak, disipating in Fl. Also spits some lows out into the EP as the cmc. Nogaps is quiet, with nothing new forming. Ukmet is on board with NOGAPS. All 4 doesn't develope the GOM blob. (scroll right & click FWD on those links) GFDL doesn't have it's run out on this page though I noticed it up in Master's entry. GFDL normally preforms badly when 2 storms are close together as in this invest & Emilie. When you watch each storm's track & notice where the other storm is, it will almost always be differnrt depending on which storm run your looking at.
Member Since: Agosto 10, 2005 Posts: 145 Comments: 29957
43. earthlydragonfly 6:17 PM GMT en Julio 23, 2006    
I have changed my computer and did not copy all of my links. So does anyone have the links that show the pictures from space to show damage from all of the hurricanes like Rita Katrina etc?
Member Since: Julio 1, 2005 Posts: 10 Comments: 1653
44. Skyepony (Mod) 6:37 PM GMT en Julio 23, 2006    
earthlydragonfly~ NASA, GISc & here's the link I keep around it's NOAA's aerial photos.
Member Since: Agosto 10, 2005 Posts: 145 Comments: 29957
45. Skyepony (Mod) 6:38 PM GMT en Julio 23, 2006    
oops that last one for looking at all storms should be Link.
Member Since: Agosto 10, 2005 Posts: 145 Comments: 29957
46. littlefish 6:55 PM GMT en Julio 23, 2006    
Stormw, I think most scientists agree that the upper upper atmosphere may actually grow slightly COOLER with Global Warming because less heat would be allowed to escape that far up and would remain trapped nearer the surface, so the idea that very high level atmosphere would be warmer may not be accurate. The opposite may actually be true. I just rememebr hearing that from some guru, but don't recall where.
47. littlefish 7:00 PM GMT en Julio 23, 2006    
Wow, that wind shear is fierce in the Gulf, thought I remembered someone saying it was dying down?? Looks like it is full-force right now. Blowing the crap outta that Western Gulf stuff, making it look less like a white glod and more like a wispy gray streak getting combed back over as far as the yucatan. Amazing stuff, that wind shear. Storm killer.
48. bappit 7:04 PM GMT en Julio 23, 2006    
Interesting link prickly plant insect. :) Here's a quote.

The most alarming assault on our way of life comes at the hands of powerful interests in Washington and Columbia, who want to open S.C. coastal waters to oil and gas drilling and exploration.

But the crowds keep coming. Some 500,000 new residents will move to our coast in the next 30 years. More than 30,000 new homes are in some stage of planning, permitting, or construction in the tri-county area alone. Where will those people live, work, and recreate, and what impact will they have on this fragile coastal ecosystem?


The biggest effect would come from the people brought to the area by that "alarming attack" by the interests of the rest of the country.

If they changed the title of the article to "Too Many People" and left it at that I'd be happier. :(

LOL!
Member Since: Mayo 18, 2006 Posts: 5 Comments: 4423
49. WSI 7:05 PM GMT en Julio 23, 2006    
"As you can see, the SST in the Gulf are higher than they were last year and the year before, when we had Cat 5 Ivan."

Yeah, I saw your charts before you posted them. Mentioned I compared them in SJ's blog. Noticed you left the east coast out. :) Gulf looks slightly warmer according to your charts. East coast does not. Noticed a site with more updated anomaly info. Didn't realize the dating in the one I posted previously. Little warmer overall, but again these compare to the climate norms, not last year. Here you can find anomalies for both years. 2005 looked warmer over all.

Guess its a matter of perspective. Believe the sites you want, but I will stick with NOAA on this one.

Also, keep in mind that just because a CAT 5 crossed the waters with those temps before, DOES NOT mean it will happen this time. As said on here before, SST's are not the only factor in storm strength.
50. Cavin Rawlins 7:20 PM GMT en Julio 23, 2006    
Wind shear is strong over the bay of campeche not the gulf.
Member Since: Julio 24, 2005 Posts: 407 Comments: 19076
51. bappit 7:20 PM GMT en Julio 23, 2006    
Brownsville forecast discussion describes shear as "negligible".
Member Since: Mayo 18, 2006 Posts: 5 Comments: 4423

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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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