Massive haboob duststorm sweeps through Phoenix

By: Dr. Jeff Masters , 3:15 PM GMT on July 06, 2011

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A massive desert sandstorm roared through Phoenix, Arizona last night, dropping visibilities to near zero and coating surfaces with a gritty later of dust and sand. The phenomenon, known as a haboob, occurs when the outflow from a thunderstorm kicks up desert dust. Last night's haboob was due to a large complex of thunderstorms known as a mesoscale convective system (MCS) that developed to the east of Phoenix. As the outflow from the MCS hit the ground, large quantities of sand and dust became suspended in the air by 50 - 60 mph winds. The amount of dust was much greater than is usual for one of these storms, due to the large size of the thunderstorm complex, and the extreme drought conditions the region has been experiencing. As the haboob hit Phoenix, winds gusted to 53 mph at Sky Harbor International Airport, and the airport was forced to shut down for 45 minutes due to visibilities that fell as low as 1/8 mile. The airport received only 0.04" of rain from the storm, but large regions of Southern Arizona got 1 - 2 inches of rain overnight due to the monsoon thunderstorms. The Southwest U.S.'s annual monsoon season has kicked into gear this week, aided by moisture from Tropical Storm Arlene. The welcome rains the monsoon's thunderstorms will bring to the region should greatly aid the efforts of firefighters attempting to control the fires of the Southwest's worst fire season in recorded history. The latest 5-day precipitation forecast from NOAA's Hydrometeorological Prediction Center is calling for widespread areas of 1/2 - 1 inch of rain over Arizona and western New Mexico this week.


Figure 1. Radar-estimated rainfall from last night's monsoon season thunderstorms that swept through Southern Arizona.


Video 1. Helicopter video of the impressive haboob sandstorm from July 5, 2011, as it swept through downtown Phoenix. Here is a time lapse video of what it was like to drive into the sandstorm.

The Atlantic is quiet
The Atlantic is quiet, with no threat areas to discuss. None of the reliable computer model is predicting tropical cyclone formation over the next seven days.

Jeff Masters

Monsoon Dust Storm (nukegm)
Crazy storm came through tonight!!
Monsoon Dust Storm
Los Alamos Wildfire 1 (suedoku)
The Los Alamos fire as seen from mountaintop in Santa Fe, NM
Los Alamos Wildfire 1
The Phoenix Haboob (ChandlerMike)
Wanted to post a color version, even if I much prefer the B&W :)
The Phoenix Haboob
Chandler AZ 1st dust storm 2011 (JerryValentine)
Chandler Arizona's 1st dust storm of 2011
Chandler AZ 1st dust storm 2011

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647. Buhdog
2:25 PM GMT on July 07, 2011
Quoting ProgressivePulse:


not sure about 10 but, 5 days from now the pattern flattens out with no weakness.

I've been here in FL for almost 10 years now and have come to realize that the first wave of the year that reaches the peninsula tends to kick off the ATL development wise. No science to that just observation.



+1 very good observation, that is prob true in retrospect.

Member Since: July 30, 2005 Posts: 1 Comments: 960
646. ILwthrfan
2:05 PM GMT on July 07, 2011
NEW BLOG!
Member Since: February 2, 2010 Posts: 0 Comments: 1539
645. stillwaiting
2:04 PM GMT on July 07, 2011
Quoting StormHype:
just looked at buoys around the Dry Tortugas and lower keys. surface pressures are rising. don't get the NHC's 'invest' status other than to cover butts due to close proximity to FL.
...wait until tonight,i bet we get a sheered TD2 with landfall just north of tpa friday night!!
Member Since: October 5, 2007 Posts: 20 Comments: 4970
644. islander101010
2:02 PM GMT on July 07, 2011
Quoting bluheelrtx:


I just wish there was a way to minimize the posts with very large images and animations that devour my bandwidth and data limits. Without having to minus or ignore them, that is.
yes devour simpson
Member Since: September 11, 2010 Posts: 1 Comments: 4987
643. bluheelrtx
1:59 PM GMT on July 07, 2011
Quoting DestinJeff:
The minus and re()port buttons were the worst thing to happen to the blog. Too much school-yard bullying associated with those.


I just wish there was a way to minimize the posts with very large images and animations that devour my bandwidth and data limits. Without having to minus or ignore them, that is.
Member Since: November 8, 2006 Posts: 5 Comments: 228
642. muddertracker
1:57 PM GMT on July 07, 2011
Quoting DestinJeff:


Or a morning Shocker.


Hey, how ya doin'?

Doing well, DJ...just kickin' back this summer like all overpaid Texas teachers who still have jobs (sigh)...Hawaii with the family in a few weeks should be fun..you?
Member Since: August 16, 2007 Posts: 1 Comments: 2351
641. IceCoast
1:56 PM GMT on July 07, 2011
Quoting DestinJeff:
The minus and re()port buttons were the worst thing to happen to the blog. Too much school-yard bullying associated with those.

+100
They are definitely overused. Some people seem to not be able to take a joke, or get offended to easily. They just need to relax and take a deep breath and realize as great as this blog is, we are still using the internet. If you are offended easily, you probably shouldn't be on the internet in the first place.

On the other hand it helps us get rid of trolls since there seems to be a lack of live administration.
Member Since: October 17, 2010 Posts: 0 Comments: 1267
640. Micktooth
1:55 PM GMT on July 07, 2011
I have a family reunion starting Sunday 7/10 in Destin,Fl. Can any of you give me a time frame on when this disturbance will effect the Fl panhandle? Thanks so much.
Member Since: June 29, 2011 Posts: 0 Comments: 5
639. MrstormX
1:54 PM GMT on July 07, 2011
CMC develops 96L into a 1007mb Depression/Storm, after hitting the panhandle it tracks Northeast into the ATL where it strengthens. But then again it is the CMC :)
Member Since: May 27, 2009 Posts: 0 Comments: 4438
637. Levi32
1:53 PM GMT on July 07, 2011
Quoting CybrTeddy:
If the NHC thinks 96L is not expected to develop, why are they sending in a recon?


It's prudent to check such things when they are close to our coastline, which is the NHC's priority area of responsibility. They also will not send the recon if it is clear that it is not needed.
Member Since: November 24, 2005 Posts: 635 Comments: 26695
636. nrtiwlnvragn
1:53 PM GMT on July 07, 2011
OLD BLOG
Member Since: September 23, 2005 Posts: 14 Comments: 11301
634. RukusBoondocks
1:53 PM GMT on July 07, 2011
Quoting CybrTeddy:
If the NHC thinks 96L is not expected to develop, why are they sending in a recon?



so they wont get sued
Member Since: February 13, 2011 Posts: 0 Comments: 294
633. JRRP
1:52 PM GMT on July 07, 2011
Member Since: August 16, 2007 Posts: 0 Comments: 6209
632. ShenValleyFlyFish
1:51 PM GMT on July 07, 2011
Quoting FLdewey:


Well... you were supposed to reply "under wear?"

Hilarity would have ensued.
Times are hard, all the good stright men are at the front.
Member Since: September 9, 2007 Posts: 36 Comments: 4687
631. CybrTeddy
1:51 PM GMT on July 07, 2011
If the NHC thinks 96L is not expected to develop, why are they sending in a recon?
Member Since: July 8, 2005 Posts: 259 Comments: 24546
630. RukusBoondocks
1:51 PM GMT on July 07, 2011
i think it will steer more to the east and hit west fl
Member Since: February 13, 2011 Posts: 0 Comments: 294
629. MrstormX
1:51 PM GMT on July 07, 2011
Member Since: May 27, 2009 Posts: 0 Comments: 4438
628. aspectre
1:49 PM GMT on July 07, 2011
Invest96L ( _ATCF_ )

Last 24hours
23.7n82.8w, 20knots, 1011millibars, Disturbance
24.0n83.1w, 20knots, 1011millibars, Disturbance
24.2n83.3w, 20knots, 1011millibars, Disturbance
24.5n83.5w, 20knots, 1011millibars, Disturbance
24.9n83.7w, 25knots, 1011millibars, Disturbance
Member Since: August 21, 2007 Posts: 0 Comments: 4860
627. Orcasystems
1:49 PM GMT on July 07, 2011
Complete Update

Still waiting for GE to show the models for 96L

TS BUSTED FORECAST ALIBI





Member Since: October 1, 2007 Posts: 81 Comments: 26512
626. muddertracker
1:49 PM GMT on July 07, 2011
I see we've got a little action this morning. Nothing like a morning surprise to start the day off right...lol
Member Since: August 16, 2007 Posts: 1 Comments: 2351
624. ShenValleyFlyFish
1:48 PM GMT on July 07, 2011
Quoting pottery:
Good Morning all.
Yeah, that wave east of NE South America will be overhead here by Friday evening.
I remember Alma.
Gusty winds but more damaging were the rains.
Any Torrential rain here will be a problem right now as everything is completely saturated.
Fortunately, the Authorities have been clearing rivers and waterways all over the Island for the past few months.
They were completely silted up and ignored for many years....

In the city of Port-of-Spain it was recently found that new high-rise construction along the waterfront entirely blocked the outflow of several of the main drains under the City.
The new foundations were built through the underground drains.

So it goes......


I'd say drop a torpedo in there and open em back up. LoL
Member Since: September 9, 2007 Posts: 36 Comments: 4687
623. FLdewey
1:46 PM GMT on July 07, 2011
Quoting DestinJeff:


Wachoo talkin' bout, Dewey?


Well... you were supposed to reply "under wear?"

Hilarity would have ensued.
Member Since: August 19, 2008 Posts: 42 Comments: 6269
622. Neapolitan
1:46 PM GMT on July 07, 2011
Quoting scooster67:
Is that better for you "WU karma"

Well, it would have been better to have done it in the first place--or even if you'd gone back and edited that first entry. But it's a little too late now, much as I appreciate

Regardless of where one stands on the issue of AGWT, anyone who believes in both free speech and honest scientific debate should probably avoid mashing the minus/report buttons because they disagree with what someone says. If you're not one of those who engage in such childish attempts at silencing dissent, I applaud you. If, on the other hand, you are, this especially applies to you.

Thanks for listening.
Member Since: November 8, 2009 Posts: 4 Comments: 13724
621. CybrTeddy
1:44 PM GMT on July 07, 2011
Quoting DestinJeff:
I'm not sure if I should get back in the Wunderwater or not.

Everything ok around here?


The water is wunderful.
Member Since: July 8, 2005 Posts: 259 Comments: 24546
619. islander101010
1:42 PM GMT on July 07, 2011
Quoting TampaFLUSA:
This will really almost end the drought on peninsula Florida.
yep and another tropical wave after that. then cape verde season. better have lots of bug spray
Member Since: September 11, 2010 Posts: 1 Comments: 4987
618. HCW
1:42 PM GMT on July 07, 2011
96L model runs from the NHC :) Have a great day

Member Since: August 10, 2002 Posts: 0 Comments: 1409
617. galvestonhurricane
1:41 PM GMT on July 07, 2011
THIS SYSTEM IS EXPECTED TO DRIFT NORTHWARD OR NORTHWESTWARD WITH NO SIGNIFICANT DEVELOPMENT
Member Since: June 18, 2010 Posts: 0 Comments: 543
616. PTXer
1:38 PM GMT on July 07, 2011
Quoting KeysieLife:
Sheesh...anyone up for a boil?



Yes! Heading down to St.Pete Beach in a couple weeks for vacation. Warm water great, hurricanes none please.
Member Since: January 18, 2011 Posts: 0 Comments: 82
615. Levi32
1:37 PM GMT on July 07, 2011
Good morning.

Blog update:

Tropical Tidbit for Thursday, July 7th, with Video
Member Since: November 24, 2005 Posts: 635 Comments: 26695
614. TampaFLUSA
1:37 PM GMT on July 07, 2011
Quoting nrtiwlnvragn:
This will really almost end the drought on peninsula Florida.
Member Since: June 21, 2007 Posts: 10 Comments: 1657
613. FLdewey
1:33 PM GMT on July 07, 2011
Quoting DestinJeff:
I'm not sure if I should get back in the Wunderwater or not.

Everything ok around here?

Did you see that under there?
Member Since: August 19, 2008 Posts: 42 Comments: 6269
612. MrstormX
1:32 PM GMT on July 07, 2011
Pre-Claudette Wind Shear



vs

96L Shear

Member Since: May 27, 2009 Posts: 0 Comments: 4438
611. Tropicsweatherpr
1:31 PM GMT on July 07, 2011
Recon for tommorow to check 96L.

WEATHER RECONNAISSANCE FLIGHTS
CARCAH, NATIONAL HURRICANE CENTER, MIAMI, FL.
0915 AM EDT THU 07 JULY 2011
SUBJECT: TROPICAL CYCLONE PLAN OF THE DAY (TCPOD)
VALID 08/1100Z TO 09/1100Z JULY 2011
TCPOD NUMBER.....11-037

I. ATLANTIC REQUIREMENTS
1. SUSPECT AREA (GULF OF MEXICO)
FLIGHT ONE -- TEAL 70
A. 08/1700Z
B. AFXXX 01BBA INVEST
C. 08/1530Z
D. 28.2N 85.0W
E. 08/1630Z TO 08/2200Z
F. SFC TO 10,000 FT

FLIGHT TWO -- TEAL 71
A. 09/0600,1200Z
B. AFXXX 0202A CYCLONE
C. 09/0430Z
D. 29.4N 84.8W
E. 09/0530Z TO 09/1200Z
F. SFC TO 10,000 FT

2. OUTLOOK FOR SUCCEEDING DAY.....NEGATIVE.





Member Since: April 29, 2009 Posts: 75 Comments: 14752
610. JRRP
1:30 PM GMT on July 07, 2011
Link
Member Since: August 16, 2007 Posts: 0 Comments: 6209
609. BahaHurican
1:28 PM GMT on July 07, 2011
Quoting CaicosRetiredSailor:
I'm waiting for Baha to get in and find out that Nassau is under their first yellow circle for 2011...
Yah, I knew I shoulda done that blog entry... lol We actually got some decent rain last night from that. Rain seems pretty much done for us, though it's still overcast out there.

And the Doc's topic explains why I heard "haboob" on the TV so much last night as I came in the door. Which reminds me.... anybody seen haboobsrus lately?

I gotta run - though if I get internet access later today I'll check in. To my FL friends, ENJOY!
Member Since: October 25, 2005 Posts: 19 Comments: 22682
608. CybrTeddy
1:26 PM GMT on July 07, 2011
Quoting MrstormX:


Claudette?


Correct.
Member Since: July 8, 2005 Posts: 259 Comments: 24546
606. CybrTeddy
1:26 PM GMT on July 07, 2011
Divergence looks excellent over the CATL disturbance.


Convergence looks decent.
Member Since: July 8, 2005 Posts: 259 Comments: 24546
605. MrstormX
1:25 PM GMT on July 07, 2011
Quoting CybrTeddy:
From August 15th, 2009. Just south of the GOMEX, predicted to enter the GOMEX just off Florida.
A TROPICAL WAVE INTERACTING WITH AN UPPER-LEVEL LOW IS PRODUCING
DISORGANIZED CLOUDINESS AND SHOWERS FROM THE WESTERN CARIBBEAN SEA
NORTHWARD ACROSS CUBA AND THE BAHAMAS TO SOUTH FLORIDA. THIS
ACTIVITY IS EXPECTED TO SPREAD WEST-NORTHWESTWARD OVER THE
SOUTHEASTERN GULF OF MEXICO DURING THE NEXT COUPLE OF DAYS.
THERE IS A LOW CHANCE...LESS THAN 30 PERCENT...OF THIS SYSTEM
BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS.


Claudette?
Member Since: May 27, 2009 Posts: 0 Comments: 4438
604. MrstormX
1:24 PM GMT on July 07, 2011
Quoting Patrap:
NRL declares a invest First usually and that's about 90% of the time.



I'm just surprised with the ULL that they would make this an invest at all.
Member Since: May 27, 2009 Posts: 0 Comments: 4438
603. CybrTeddy
1:24 PM GMT on July 07, 2011
From August 15th, 2009. Just south of the GOMEX, predicted to enter the GOMEX just off Florida.
A TROPICAL WAVE INTERACTING WITH AN UPPER-LEVEL LOW IS PRODUCING
DISORGANIZED CLOUDINESS AND SHOWERS FROM THE WESTERN CARIBBEAN SEA
NORTHWARD ACROSS CUBA AND THE BAHAMAS TO SOUTH FLORIDA. THIS
ACTIVITY IS EXPECTED TO SPREAD WEST-NORTHWESTWARD OVER THE
SOUTHEASTERN GULF OF MEXICO DURING THE NEXT COUPLE OF DAYS.
THERE IS A LOW CHANCE...LESS THAN 30 PERCENT...OF THIS SYSTEM
BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS.
Member Since: July 8, 2005 Posts: 259 Comments: 24546
602. WeatherfanPR
1:24 PM GMT on July 07, 2011
907

WHXX01 KWBC 071224

CHGHUR

TROPICAL CYCLONE GUIDANCE MESSAGE

NWS NATIONAL HURRICANE CENTER MIAMI FL

1224 UTC THU JUL 7 2011



DISCLAIMER...NUMERICAL MODELS ARE SUBJECT TO LARGE ERRORS.

PLEASE REFER TO NHC OFFICIAL FORECASTS FOR TROPICAL CYCLONE

AND SUBTROPICAL CYCLONE INFORMATION.



ATLANTIC OBJECTIVE AIDS FOR



DISTURBANCE INVEST (AL962011) 20110707 1200 UTC



...00 HRS... ...12 HRS... ...24 HRS. .. ...36 HRS...

110707 1200 110708 0000 110708 1200 110709 0000



LAT LON LAT LON LAT LON LAT LON

BAMS 24.9N 83.7W 26.0N 84.6W 27.1N 85.7W 28.2N 86.0W

BAMD 24.9N 83.7W 26.5N 84.3W 28.2N 84.8W 30.1N 85.0W

BAMM 24.9N 83.7W 26.2N 84.6W 27.3N 85.5W 28.7N 85.8W

LBAR 24.9N 83.7W 25.9N 84.2W 27.3N 84.8W 28.9N 84.8W

SHIP 25KTS 32KTS 38KTS 42KTS

DSHP 25KTS 32KTS 38KTS 42KTS



...48 HRS... ...72 HRS... ...96 HRS. .. ..120 HRS...

110709 1200 110710 1200 110711 1200 110712 1200



LAT LON LAT LON LAT LON LAT LON

BAMS 29.3N 86.4W 31.1N 86.9W 32.4N 87.4W 32.4N 87.7W

BAMD 31.8N 84.5W 33.6N 84.1W 34.0N 84.3W 33.2N 85.0W

BAMM 29.8N 85.9W 31.9N 86.6W 33.2N 87.5W 33.3N 88.0W

LBAR 30.5N 84.1W 33.9N 81.5W 37.0N 79.9W 37.8N 74.8W

SHIP 44KTS 49KTS 51KTS 49KTS

DSHP 44KTS 30KTS 27KTS 27KTS



...INITIAL CONDITIONS...

LATCUR = 24.9N LONCUR = 83.7W DIRCUR = 330DEG SPDCUR = 4KT

LATM12 = 24.2N LONM12 = 83.3W DIRM12 = 324DEG SPDM12 = 3KT

LATM24 = 23.7N LONM24 = 82.8W

WNDCUR = 25KT RMAXWD = 75NM WNDM12 = 20KT

CENPRS = 1011MB OUTPRS = 1013MB OUTRAD = 120NM SDEPTH = S

RD34NE = 0NM RD34SE = 0NM RD34SW = 0NM RD34NW = 0NM



$$

NNNN
Member Since: August 23, 2006 Posts: 0 Comments: 1592
601. ProgressivePulse
1:23 PM GMT on July 07, 2011
Quoting MrstormX:
Interesting NRL declared 96L, maybe they are seeing something the nhc is not? Or perhaps it is just the systems proximity to land which caused the invest status.


The invest is sitting in 10-20kts of shear


And Decreasing


Convergence is really good and obviously vented well.
Member Since: August 19, 2005 Posts: 5 Comments: 5452
600. Patrap
1:22 PM GMT on July 07, 2011
NRL declares a invest First usually and that's about 90% of the time.

Member Since: July 3, 2005 Posts: 427 Comments: 129400
599. WxLogic
1:21 PM GMT on July 07, 2011
Good Morning... 96L could potentially cause the STS-135 Mission to be scrubbed tomorrow AM and may be moved to Sunday.
Member Since: August 14, 2008 Posts: 4 Comments: 5038
598. scooster67
1:21 PM GMT on July 07, 2011
Quoting Neapolitan:
Adjustment:

BEGIN
NHC_ATCF
invest_al962011.invest
FSTDA
R
U
040
010
0000
201107071222
NONE
NOTIFY=ATRP
END
INVEST, AL, L, , , , , 96, 2011, DB, O, 2011070706, 9999999999, , , , , , METWATCH, , AL962011
AL, 96, 2011070612, , BEST, 0, 237N, 828W, 20, 1011, DB, 0, , 0, 0, 0, 0,
AL, 96, 2011070618, , BEST, 0, 240N, 831W, 20, 1011, DB, 0, , 0, 0, 0, 0,
AL, 96, 2011070700, , BEST, 0, 242N, 833W, 20, 1011, DB, 0, , 0, 0, 0, 0,
AL, 96, 2011070706, , BEST, 0, 245N, 835W, 20, 1011, DB, 0, , 0, 0, 0, 0, 1013, 120, 60, 0, 0, L, 0, , 0, 0, INVEST, S,
AL, 96, 2011070712, , BEST, 0, 249N, 837W, 25, 1011, DB, 34, NEQ, 0, 0, 0, 0, 1013, 120, 75, 0, 0, L, 0, , 0, 0, INVEST, S,

(And, yes, I'm aware my comments are hidden again; that's why nobody saw when I posted about 96L twenty minutes before posting this ATCF update. An immature group of anti-science types here has succeeded--again--in minusing my comments en masse to the point that my karma is--again--at a minimal level. [This same group would doubtless minus Dr. Masters, too, if they could.] What they fail to realize are these two things: a) each time they minus a comment, their own "WU karma" gets driven down; and b) even if they silence me and every other person telling them about AGW, the planet is still going to continue to warm. Silly people... ;-)
Is that better for you "WU karma"
Member Since: September 26, 2010 Posts: 0 Comments: 638
597. Patrap
1:21 PM GMT on July 07, 2011
Sen. Inhofe has a wu account?
Member Since: July 3, 2005 Posts: 427 Comments: 129400

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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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