Massive African Dust Storm Cooling Atlantic Hurricane Odds for Early August

By: Dr. Jeff Masters , 3:10 PM GMT on July 31, 2013

Share this Blog
85
+

A massive dust storm that formed over the Sahara Desert early this week has now pushed out over the tropical Atlantic, and will sharply reduce the odds of tropical storm formation during the first week of August. The dust is accompanied by a large amount of dry air, which is making the Saharan Air Layer (SAL) much drier than usual this week. June and July are the peak months for dust storms in the Southwest Sahara, and this week's dust storm is a typical one for this time of year. Due in large part to all the dry and dusty air predicted to dominate the tropical Atlantic over the next seven days, none of the reliable computer models is predicting Atlantic tropical cyclone formation during the first week of August.


Figure 1. A massive dust storm moves off the coast of Africa in this MODIS image taken at 1:40 UTC July 30, 2013. Image credit: NASA.


Video 1. The predicted movement through August 3 of this week's Africam dust storm, using the NOAA NGAC aerosol model. Image credit: NOAA Visualization Laboratory.

How dust affects hurricanes
Saharan dust can affect hurricane activity in several ways:

1) Dust acts as a shield which keeps sunlight from reaching the surface. Thus, large amounts of dust can keep the sea surface temperatures up to 1°C cooler than average in the hurricane Main Development Region (MDR) from the coast of Africa to the Caribbean, providing hurricanes with less energy to form and grow. Ocean temperatures in the MDR are currently 0.7°F above average, and this anomaly should cool this week as the dust blocks sunlight.

2) The Saharan Air Layer (SAL) is a layer of dry, dusty Saharan air that rides up over the low-level moist air over the tropical Atlantic. At the boundary between the SAL and low-level moist air where the trade winds blow is the trade wind inversion--a region of the atmosphere where the temperature increases with height. Since atmospheric temperature normally decreases with height, this "inversion" acts to but the brakes on any thunderstorms that try to punch through it. This happens because the air in a thunderstorm's updraft suddenly encounters a region where the updraft air is cooler and less buoyant than the surrounding air, and thus will not be able to keep moving upward. The dust in the SAL absorbs solar radiation, which heats the air in the trade wind inversion. This makes the inversion stronger, which inhibits the thunderstorms that power a hurricane.

3) Dust may also act to produce more clouds, but this effect needs much more study. If the dust particles are of the right size to serve as "condensation nuclei"--centers around which raindrops can form and grow--the dust can act to make more clouds. Thus, dust could potentially aid in the formation and intensification of hurricanes. However, if the dust acts to make more low-level clouds over the tropical Atlantic, this will reduce the amount of sunlight reaching the ocean, cooling the sea surface temperatures and discouraging hurricane formation (Kaufman et al., 2005.)


Figure 2. Map of the mean summer dust optical thickness derived from satellite measurements between 1979 and 2000. Maximum dust amounts originate in the northern Sahel (15° to 18° N) and the Sahara (18° to 22° N). The Bodele depression in Chad is also an active dust source. Image credit: Evidence of the control of summer atmospheric transport of African dust over the Atlantic by Sahel sources from TOMS satellites (1979-2000), by C. Moulin and I. Chiapello, published in January 2004 in Geophysical Research Letters.

Dust in Africa's Sahel region and Atlantic hurricane activity
The summertime dust that affects Atlantic tropical storms originates over the southwestern Sahara (18° - 22° N) and the northwestern Sahel (15° - 18° N) (Figure 3.) The dust from the Southwest Sahara stays relatively constant from year to year, but the dust from the Northwest Sahel varies significantly, so understanding this variation may be a key factor in improving our forecasts of seasonal hurricane activity in the Atlantic. The amount of dust that gets transported over the Atlantic depends on a mix of three main factors: the large scale and local scale weather patterns (windy weather transports more dust), how wet the current rainy season is (wet weather will wash out dust before it gets transported over the Atlantic), and how dry and drought-damaged the soil is. The level of drought experienced in the northwestern Sahel during the previous year is the key factor of the three in determining how much dust gets transported over the Atlantic during hurricane season, according to a January 2004 study published in Geophysical Research Letters published by C. Moulin and I. Chiapello. In 2012 (Figure 3), precipitation across the northwestern Sahel was much above average, which should result in less dust than usual over the Atlantic this fall, increasing the odds of a busy 2013 hurricane season.


Figure 3. Rainfall over the Northwest Sahel region of Africa was about 200% of average during the 2012 rainy season. The heavy rains promoted vigorous vegetation growth in 2013, resulting in less bare ground capable of generating dust. Image credit: NOAA/Climate Prediction Center.

The future of African dust: highly uncertain
A September 2013 paper in the Bulletin of the American Meteorological Society by Joseph Prospero and Olga Mayol-Bracero, "Understanding the Transport and Impact of African Dust on the Caribbean Basin," discusses the large uncertainties on how African dust may change due to climate change. Over the past decade, there has been no clear relationship between African dust and climate indices such as rainfall in the Sahel or the El Niño/La Niña cycle, which "makes it difficult to predict how dust emissions and transport might change over the coming decades as climate changes. The problem is exacerbated by the inability of models (IPCC 2007) to agree on future rainfall trends over large areas of North Africa (including the Sahel) that are known to be major dust sources today and in the recent past."

Links
Saharan Air Layer Analysis from the University of Wisconsin

Atlantic dust forecast from the Tel-Aviv University Weather Research Center

The Saharan Air Layer (SAL) was first described in 1972, in this classic paper: Carlson, T. N., and J. M. Prospero (1972), The Large-Scale Movement of Saharan Air Outbreaks over the Northern Equatorial Atlantic, Journal of Applied Meteorology, 11(2), 283-297

Dr. Amato Evan published a study in Science magazine March 2009 showing that 69% of the increase in Atlantic sea surface temperatures over the past 26 years could be attributed to decreases in the amount of dust in the atmosphere.

Kaufman, Y. J., I. Koren, L. A. Remer, D. Rosenfeld, and Y. Rudich, 2005a: The effect of smoke, dust, and pollution aerosol on shallow cloud development over the Atlantic Ocean. Proc. Natl. Acad. Sci. USA, 102, 11 207–11 212.

Wang, Chunzai, Shenfu Dong, Amato T. Evan, Gregory R. Foltz, Sang-Ki Lee, 2012, Multidecadal Covariability of North Atlantic Sea Surface Temperature, African Dust, Sahel Rainfall, and Atlantic Hurricanes, J. Climate, 25, 5404–5415.
doi: http://dx.doi.org/10.1175/JCLI-D-11-00413.1

Jeff Masters

Reader Comments

Comments will take a few seconds to appear.

Post Your Comments

Please sign in to post comments.

Sign In or Register Sign In or Register

Not only will you be able to leave comments on this blog, but you'll also have the ability to upload and share your photos in our Wunder Photos section.

Display: 0, 50, 100, 200 Sort: Newest First - Order Posted

Viewing: 2426 - 2376

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77Blog Index

2426. LargoFl
ssued by The National Weather Service
Jacksonville, FL
4:24 pm EDT, Thu., Aug. 1, 2013

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR... EASTERN DUVAL COUNTY IN NORTHEAST FLORIDA

* UNTIL 515 PM EDT

* AT 425 PM EDT... NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR CRAIG FIELD... MOVING EAST AT 25 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO FORT CAROLINE... SAN PABLO... NEPTUNE BEACH... MAYPORT... LITTLE TALBOT ISLAND AND TALBOT ISLAND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT.
Member Since: August 6, 2011 Posts: 5 Comments: 50377
2425. KEEPEROFTHEGATE (Mod)
Member Since: Posts: Comments:
Quoting 2418. PalmBeachWeather:
No comparison to Wilma.Not even close

Um yeah I know that lol, I was being sarcastic because everyone says this is katrina lol.
Member Since: Posts: Comments:
2423. centex
Quoting 2398. bluewaterblues:
I agree with some of the others on here about the potential if 91L does not make the turn to the northeast that the NHC has referenced.If the northwest movement continues (unlikely) and she gets in the gulf all bets are off. Still has a lot of work to do and has not really improved much in the last hour but conditions are much more favorable for development than in the past.
(unlikey)? They said Friday and Saturday WNW/NW than N/NE. So why is WNW/NW unlikely for now?
Member Since: Posts: Comments:
Quoting 2411. GTstormChaserCaleb:
Looks like it is starting the turn more towards the north.
As it should
Member Since: Posts: Comments:
2421. nigel20
Quoting Tropicsweatherpr:


And this will retard the CV season to get going.

Hi Tropics! Maybe for or week or two. The current SAL outbreak should weaken by then.
Member Since: Posts: Comments:


Looks like an eye trying to peek out.
Member Since: Posts: Comments:
Quoting 2411. GTstormChaserCaleb:
Looks like it is starting the turn more towards the north.
fish storm
Member Since: Posts: Comments:
Quoting 2409. SuperStorm093:


you know what, that one little blog way out in the south atlantic reminds me of hurricane wilma too, GET READY FLORIDA lol
No comparison to Wilma.Not even close
Member Since: Posts: Comments:
2417. JLPR2
Quoting 2407. wunderkidcayman:

Yep eventually the front will thin out most should be gone within 4-5days from now


Not quick enough, it should arrive in my area late tomorrow into Saturday.
Member Since: Posts: Comments:
Quoting 2389. ProgressivePulse:
What's the talk about the gulf?

ZCZC MIATWOAT ALL
TTAA00 KNHC DDHHMM

TROPICAL WEATHER OUTLOOK
NWS NATIONAL HURRICANE CENTER MIAMI FL
200 PM EDT THU AUG 1 2013


THIS DISTURBANCE IS FORECAST TO MOVE TOWARD THE
NORTHWEST AND NORTH...BRINGING CLOUDINESS...SHOWERS...AND GUSTY
WINDS TO PORTIONS OF THE NORTHWESTERN BAHAMAS AND THE COASTAL
WATERS OF SOUTHEASTERN FLORIDA ON FRIDAY AND SATURDAY. AFTER
THAT...THE DISTURBANCE IS EXPECTED TO MOVE TOWARD THE
NORTH-NORTHEAST AND BECOME ASSOCIATED WITH A FRONTAL TROUGH.
With all respect,my eyes sees this system moving West-North West,and it's almost ready to hit the South Florida Coast in a very few hours,don't see how this will miss South Florida,it will have to make a 90 degree angle North not to transverse at least some of the South Florida Peninsula.
Member Since: Posts: Comments:
Member Since: Posts: Comments:

Grothar,  are you up for an all nighter? Ill take the night shift and  have coffee and deserts for the night crew.
Member Since: Posts: Comments:
Quoting 2397. Gearsts:
Really not looking so well.


Although outflow isn't too bad to the North and East
Member Since: Posts: Comments:
2412. LargoFl
FOLKS PAY ATTENTION TO YOUR LOCAL WARNINGS..WE HAVE REAL BAD STORMS IN FLORIDA RIGHT NOW OK..................................acksonville, FL
4:06 pm EDT, Thu., Aug. 1, 2013

... A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR NORTHWESTERN ST. JOHNS... EASTERN DUVAL AND EASTERN NASSAU COUNTIES FOR STRONG WINDS... SMALL HAIL AND EXCESSIVE LIGHTNING VALID UNTIL 445 PM EDT...

AT 406 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS CENTERED OVER NAS JAX... MOVING NORTHEAST AT 15 MPH. THESE STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND NAS JAX... ORTEGA... MANDARIN... FRUIT COVE... RIVERSIDE... SAN MARCO... DOWNTOWN JACKSONVILLE... BAYMEADOWS... BAYARD AND TALLYRAND THROUGH 445 PM EDT. HAIL UP TO THREE QUARTER INCH IN DIAMETER... EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE. HEAVY RAINFALL WILL PRODUCE PONDING OF WATER ON ROADWAYS AND MINOR FLOODING OF LOW-LYING AREAS.

REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT.
Member Since: August 6, 2011 Posts: 5 Comments: 50377
Quoting 2397. Gearsts:
Really not looking so well.
Looks like it is starting the turn more towards the north.
Member Since: Posts: Comments:
2410. Patrap
Member Since: Posts: Comments:
Quoting 2401. yankees440:
This kind of reminds me of Tropical Storm Katrina when she was just off the coast of South Florida before strengthening...


you know what, that one little blog way out in the south atlantic reminds me of hurricane wilma too, GET READY FLORIDA lol
Member Since: Posts: Comments:
Quoting 2383. sar2401:

Unless you know something I don't, the aircraft isn't scheduled to fly until 5:00 pm. tomorrow afternoon. The buoys and weather stations in and near the Bahamas are also rather sparse.


Thats is what I mean Recon will fly out in about 24 hours from now which is quite fast if this was out farther in the Atlantic it would have taken sometime to do so. Systems in the NW Caribbean/Gulf/SW Atlantic have more data available on them stations/buoy so nothing can sneak up on us thus its more convenient.
Member Since: Posts: Comments:
Quoting 2388. JLPR2:
Only the front of the SAL cloud has maintained its intensity, the back has thinned out.



Cue the allergies! XD

Yep eventually the front will thin out most should be gone within 4-5days from now
Member Since: Posts: Comments:
Quoting 2389. ProgressivePulse:
What's the talk about the gulf?

ZCZC MIATWOAT ALL
TTAA00 KNHC DDHHMM

TROPICAL WEATHER OUTLOOK
NWS NATIONAL HURRICANE CENTER MIAMI FL
200 PM EDT THU AUG 1 2013


THIS DISTURBANCE IS FORECAST TO MOVE TOWARD THE
NORTHWEST AND NORTH...BRINGING CLOUDINESS...SHOWERS...AND GUSTY
WINDS TO PORTIONS OF THE NORTHWESTERN BAHAMAS AND THE COASTAL
WATERS OF SOUTHEASTERN FLORIDA ON FRIDAY AND SATURDAY. AFTER
THAT...THE DISTURBANCE IS EXPECTED TO MOVE TOWARD THE
NORTH-NORTHEAST AND BECOME ASSOCIATED WITH A FRONTAL TROUGH.



BAMs move system in that direction, almost all global models are north.
Member Since: Posts: Comments:
2405. Mclem1
From what I can tell this storm has a pretty limited time to gain a LLC and increase convection. Im not saying it's impossible, but I would agree that 20% is a fair percentage for that possibility.
Member Since: Posts: Comments:
Lol.What a waste.....Mid August folks mid August.....
Member Since: Posts: Comments:
2403. SLU
Quoting 2384. Tropicsweatherpr:


And this will retard the CV season to get going.


At least for the next 3 - 5 days.

Quoting 2388. JLPR2:
Only the front of the SAL cloud has maintained its intensity, the back has thinned out.



Cue the allergies! XD


This is one of the most severe outbreaks I've seen in years. Reminiscent of July/August 2005.
Member Since: Posts: Comments:
2402. barbamz
Good evening, and wow, blog is very active .... ah, our good old invest is back! At present I'm not overly impressed, I must confess, but this doesn't mean anything, lol.

To watch it live, here two of my famous favourite harbour/beach-cams. The latter is just showing blue sky at the moment, the first one at Gro's place clouds moving in (at cam 2).

http://ftlauderdalewebcam.com/

http://portmiamiwebcam.com/



Member Since: Posts: Comments:
This kind of reminds me of Tropical Storm Katrina when she was just off the coast of South Florida before strengthening...

And I am only referring to her when she was off of Florida as x-Dorian is now
Member Since: Posts: Comments:
2400. Patrap
Member Since: Posts: Comments:
Quoting 2385. SuperStorm093:
yeah JLPR2, lots and lots of wishcasting going on right now, once they put that yellow circle on the NHC, people went crazy talking Katrina what not. Guys have to hit reality of this thing.


You honestly have no idea how much I hate the word *wischasting.* Its honestly gotten to the point where it's thrown around so much that people haven't the faintest idea what it means or in what context it's supposed to be in used in. The people comparing this to Katrina are the same people who compare everything to Katrina, they're simply not to be taken seriously. However, animated discussion is not wishcasting nor has it ever have been. People are just posting their predictions based off the conditions seen present.
Member Since: Posts: Comments:
I agree with some of the others on here about the potential if 91L does not make the turn to the northeast that the NHC has referenced.If the northwest movement continues (unlikely) and she gets in the gulf all bets are off. Still has a lot of work to do and has not really improved much in the last hour but conditions are much more favorable for development than in the past.
Member Since: Posts: Comments:
2397. Gearsts
Really not looking so well.
Member Since: Posts: Comments:
Quoting 2389. ProgressivePulse:
What's the talk about the gulf?

ZCZC MIATWOAT ALL
TTAA00 KNHC DDHHMM

TROPICAL WEATHER OUTLOOK
NWS NATIONAL HURRICANE CENTER MIAMI FL
200 PM EDT THU AUG 1 2013


THIS DISTURBANCE IS FORECAST TO MOVE TOWARD THE
NORTHWEST AND NORTH...BRINGING CLOUDINESS...SHOWERS...AND GUSTY
WINDS TO PORTIONS OF THE NORTHWESTERN BAHAMAS AND THE COASTAL
WATERS OF SOUTHEASTERN FLORIDA ON FRIDAY AND SATURDAY. AFTER
THAT...THE DISTURBANCE IS EXPECTED TO MOVE TOWARD THE
NORTH-NORTHEAST AND BECOME ASSOCIATED WITH A FRONTAL TROUGH.


people are hoping for a hurricane so thats why they talk about the GOM and the worst case scenario
Member Since: Posts: Comments:
2395. LargoFl
well now we wait..its early yet and the models need current info..nothing is saying this will be moving fast anytime soon..
Member Since: August 6, 2011 Posts: 5 Comments: 50377
Quoting 2391. centex:
The movie is on tonight, TMC.
Great movie.....Great actors
Member Since: Posts: Comments:
Quoting 2364. SLU:
Massive dust cloud about to overspread the Caribbean.


Here is a better view

Member Since: Posts: Comments:
I'm gone for my vacation,see ya'lnl soon.
Member Since: Posts: Comments:
2391. centex
Quoting 2367. Patrap:
If you Look closely here, the COC I believe is about 50 NM East of Key Largo.

Moving around 280 at 8mph

The movie is on tonight, TMC.
Member Since: Posts: Comments:
Quoting 2382. Patrap:


No ill wind here, I'm not built that way, but as always, we have to respect the authors place here.

Lets move on with what we do best, share here.
Pinky Truce
Member Since: Posts: Comments:
What's the talk about the gulf?

ZCZC MIATWOAT ALL
TTAA00 KNHC DDHHMM

TROPICAL WEATHER OUTLOOK
NWS NATIONAL HURRICANE CENTER MIAMI FL
200 PM EDT THU AUG 1 2013


THIS DISTURBANCE IS FORECAST TO MOVE TOWARD THE
NORTHWEST AND NORTH...BRINGING CLOUDINESS...SHOWERS...AND GUSTY
WINDS TO PORTIONS OF THE NORTHWESTERN BAHAMAS AND THE COASTAL
WATERS OF SOUTHEASTERN FLORIDA ON FRIDAY AND SATURDAY. AFTER
THAT...THE DISTURBANCE IS EXPECTED TO MOVE TOWARD THE
NORTH-NORTHEAST AND BECOME ASSOCIATED WITH A FRONTAL TROUGH.
Member Since: Posts: Comments:
2388. JLPR2
Only the front of the SAL cloud has maintained its intensity, the back has thinned out.



Cue the allergies! XD
Member Since: Posts: Comments:
Quoting 2069. sar2401:

It will be fighting the trough that's headed south. The water is not significantly warmer than it has been. The convection I see is not organized. The biggest threat I see from these remnants is if they get caught up in the trough and enhance the storms there. If so, it may have a chance to get into a lower pressure environment and move northeast. If it develops, I still think it goes out to sea, but there's a small chance it could ride the 1016 line closer to the Carolinas, depending on what the A-B high decides to do. At any rate, 20% over five days is still 20%.

Sar....you are bursting bubbles again :) folks will be reaching into the med trays.
Member Since: Posts: Comments:
2386. ncstorm
Station FWYF1
NDBC
Location: 25.591N 80.097W
Date: Thu, 01 Aug 2013 20:00:00 UTC
Winds: ENE (60°) at 12.0 kt gusting to 13.0 kt
Atmospheric Pressure: 29.96 in and falling
Air Temperature: 82.0 F
Water Temperature: 84.7 F
Member Since: Posts: Comments:
yeah JLPR2, lots and lots of wishcasting going on right now, once they put that yellow circle on the NHC, people went crazy talking Katrina what not. Guys have to hit reality of this thing.
Member Since: Posts: Comments:
Quoting 2380. SLU:


Yep. The oceans temps will cool for sure.


And this will retard the CV season to get going.
Member Since: Posts: Comments:
2383. sar2401
Quoting Hurricanes305:
One thing to like about this is the fact that there is Recon flying out there right away and there is plenty of weather stations and even radar imagery to give us plenty of data on whatever is brewing over the Bahamas.

Unless you know something I don't, the aircraft isn't scheduled to fly until 5:00 pm. tomorrow afternoon. The buoys and weather stations in and near the Bahamas are also rather sparse.
Member Since: Posts: Comments:
2382. Patrap
Quoting 2375. PalmBeachWeather:
Pat.....Getting very close to me as we speak...I guess things between us didn't go well last night...I do appreciate you and all you do....Hope things are OK. Guess we aren't perfect as a human race...


No ill wind here, I'm not built that way, but as always, we have to respect the authors place here.

Lets move on with what we do best, sharing here.
Member Since: Posts: Comments:
2381. whitewabit (Mod)
Quoting 2377. Hurricanes305:
One thing to like about this is the fact that there is Recon flying out there right away and there is plenty of weather stations and even radar imagery to give us plenty of data on whatever is brewing over the Bahamas.


WEATHER RECONNAISSANCE FLIGHTS
CARCAH, NATIONAL HURRICANE CENTER, MIAMI, FL.
0330 PM EDT THU 01 AUGUST 2013
SUBJECT: TROPICAL CYCLONE PLAN OF THE DAY (TCPOD)
VALID 02/1100Z TO 03/1100Z AUGUST 2013
TCPOD NUMBER.....13-062 AMENDMENT

I. ATLANTIC REQUIREMENTS
1. REMNANTS OF DORIAN
FLIGHT ONE -- TEAL 71 FLIGHT TWO -- TEAL 72
A. 02/1800Z A. 03/0600Z
B. AFXXX 0304A INVEST B. AFXXX 0404A DORAIN
C. 02/1530Z C. 03/0400Z
D. 27.0N 79.5W D. 28.5N 79.5W
E. 02/1730Z TO 02/2130Z E. 02/0530Z TO 03/0930Z
F. SFC TO 10,000 FT F. SFC TO 10,000 FT

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

II. PACIFIC REQUIREMENTS
1. NEGATIVE RECONNAISSANCE REQUIREMENTS.
2. SUCCEEDING DAY OUTLOOK.....NEGATIVE.

Member Since: Posts: Comments:
2380. SLU
Quoting 2376. Gearsts:
Having and effect for sure.


Yep. The oceans temps will cool for sure.
Member Since: Posts: Comments:
2379. JLPR2
Still 2hrs or more away from the D-min peak and its looking sickly, I would be more surprised if it didn't.

Member Since: Posts: Comments:
2378. sar2401
Quoting yankees440:


Rather rigorous for D-min

Note that cells are beginning to spread further apart rather than clump together. They are all storms in search of low pressure somewhere, and that's north, not west or south.
Member Since: Posts: Comments:
One thing to like about this is the fact that there is Recon flying out there right away and there is plenty of weather stations and even radar imagery to give us plenty of data on whatever is brewing over the Bahamas.
Member Since: Posts: Comments:
2376. Gearsts
Quoting 2364. SLU:
Massive dust cloud about to overspread the Caribbean.

Having and effect for sure.
Member Since: Posts: Comments:

Viewing: 2426 - 2376

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77Blog Index

Top of Page

About

Dr. Masters co-founded wunderground in 1995. He flew with the NOAA Hurricane Hunters from 1986-1990. Co-blogging with him: Bob Henson, @bhensonweather

Local Weather

Partly Cloudy
62 °F
Partly Cloudy

JeffMasters's Recent Photos

Dunham Lake Sunset
Carrot Nose in Danger
Deep Snow in Brookline, MA
Sunset at Fort DeSoto