Remnants of Emily could redevelop; Muifa batters Okinawa; Central U.S. roasts

By: Dr. Jeff Masters , 4:54 PM GMT on August 05, 2011

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Tropical Storm Emily degraded into an open tropical wave yesterday afternoon, after Hurricane Hunters could no longer locate a center of circulation at the surface. Through the morning yesterday, the storm appeared to lose most of its strong thunderstorm activity on the north side, and mid-level circulation was broad (tropical cyclones need a tight, coherent circulation to maintain themselves). Soon after the Hurricane Hunters took a pass through the storm, the National Hurricane Center demoted Emily from a tropical storm to a remnant low, while continuing to stress the rainfall threat to Hispaniola and eastern Cuba. Today it appears the center of the remnants are located just north of eastern Cuba in the southern Bahamas, although thunderstorm activity continues across eastern Cuba. Hispaniola probably saw rain and thunderstorms again early this morning, the strongest of which were on the eastern side of the island. New thunderstorm activity is starting to develop in the southeast Bahamas. Given Wednesday's rain gauge analysis from CPC, Hispaniola probably saw at least an additional 5 inches of rain yesterday.

Environmental conditions remain pretty much the same as yesterday, but are expected to become more favorable for Emily's remnants, and redevelopment of the storm is possible. Circulation from the low to mid-levels is still broad and tilting to the east with height due to the lingering moderate westerly wind shear. However, this shear is expected to dissipate some over the next 24 hours, and signs of this are already present to the west of the remnants. The dry air that has been following the storm since its inception has dissipated, as well.


Figure 1. Satellite imagery of the remnants of Tropical Storm Emily as they move northwest away from Cuba and Hispaniola and into the Bahamas.

Forecast for Emily's Remnants
Interestingly, the models have come into better agreement on the forecast for former Emily now that it has lost its surface circulation and degenerated into a tropical wave. The ECMWF, which has come out ahead in this forecasting game so far, is optimistic today that Emily will redevelop. Other global models—GFS, CMC, and FIM—also redevelop the storm. Consensus on timing of redevelopment seems to be when the wave reaches the northern Bahamas in 24 to 48 hours. At 12Z (8am EDT), the high-resolution HWRF model run forecasted a track that was furthest to the west of all the models, scraping eastern Florida as it travels northwest. The most probable track and intensity forecast that I see at this point is north-northwest movement over the next 24 to 36 hours, at which point the system will take a fairly sharp turn to the northeast and out to sea. Without an already established, coherent circulation, it appears unlikely that if Emily is reborn it will intensify into anything more than a moderate tropical storm. However, there is some potential as the system moves out to see that it could gain some strength and develop hurricane-force winds before it transitions into an extra-tropical cyclone.

Typhoon Muifa passes to the south of Okinawa, heads into East China Sea

The center of Typhoon Muifa passed to the south of Okinawa earlier this morning (Eastern time) and it continues to batter the islands with high winds and torrential rain. Local radar estimate rainfall rates as high as 80 mm/hour (approx. 3 inches/hour) in the strongest rain bands. Kadena Air Force Base near the city of Okinawa has been reporting sustained winds of 47 mph with gusts up to 72 mph. Muifa is expected to turn northwest today as it enters the East China Sea as a category 1 on the Saffir-Simpson scale, and then intensify into a category 2 as it passes close to eastern China. This morning, the forecast is that Muifa will probably not make landfall anywhere as a typhoon.


Figure 2. Radar imagery from the Japan Meteorological Agency around 1am JST. Scale is in millimeters. Highest rainfall rates appear to be approximately 3 inches/hour.

South-Central U.S. continues to bake

The extreme heat continues again today after 269 high maximum and 250 high minimum temperature records were set yesterday, 19 and 29 of which were all-time records, respectively. 206 of yesterday's records were 110°F or higher. Yesterday, Reuters was reporting that Texas was one power plant shutdown away from rolling blackouts. The forecast today doesn't look any better. Heat index values up to 125° are forecast in eastern Texas and the Lower Mississippi Valley.

Particularly toasty heat index values from yesterday:

• Mobile, Alabama: 120°
• Arkadelphia, Arkansas: 121°
• Bay St. Louis, Mississippi: 121°
• Memphis, Tennessee: 122°


Figure 3. Heat index forecast from the ECMWF for today. Scale is in degrees Fahrenheit. You can plot model forecasts using Wundermap by choosing the "Model Data" layer.

Angela

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Quoting NICycloneChaser:


You left out Hurricane Emily.

Lol.


You think we'll get that far right now?
Member Since: August 3, 2011 Posts: 0 Comments: 29
Quoting weathermanwannabe:
I don't know how to post images but a tiny little "feature" can be seen in cloud tops SE of Andros in the last few vis loop frames. Let me pre-empt some of the newer folks on here. That is NOT a pinhole eye...... :)


Last Image of visible floater... is that the one?
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If Emilys center doesnt touch Fl.... I will eat a whole yard full of crows!!!
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looks like east of eluthera is going to be the one
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clearly shows the circulation pulling a thunderstorm north across the cuban landmass?? pretty apparent to me. are my eyes deceiving me?
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Quoting FromMy11YearOldSon:
Fine, be picky :)

800 PM UPDATE POLL


A: 60%- Chance Of Development
B: 60/80% Chance Of Development
C: 80%-100% Chance of Development
D: Tropical Depression Emily
E: Tropical Storm Emily


You left out Hurricane Emily.

Lol.
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Quoting Levi32:
There is a competing surface center northeast of Harbour Island. The main center is SW of Andros Island.
I was just in Harbour Island 2 weeks ago. Its a fantastic island.
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The official center is marked by NOAA on the floaters.

http://www.ssd.noaa.gov/goes/flt/t2/loop-vis.html
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Quoting HurricaneHunterJoe:
even on slow radar,looks to be going west or wnw.
Its moving WNW
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I don't know how to post images but a tiny little "feature" can be seen in cloud tops SE of Andros in the last few vis loop frames. Let me pre-empt some of the newer folks on here. That is NOT a pinhole eye...... :)
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even on slow radar,looks to be going west or wnw.
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Quoting HurricaneHunterJoe:


eye forming LMFAO........DOOM is here.....LOL


EVERYONE PANIC!! lol
Member Since: June 1, 2007 Posts: 0 Comments: 888
Convection continues to build and a possible center continues to form SSE of Andros Island.

20 minutes ago:

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LLC or MID-LEVEL or Eye forming to cast DOOM to all non-believers!
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eye forming LMFAO........DOOM is here.....LOL
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Quoting angiest:


But for the second two you need a special advisory. ;)

Just messing with you at this point.


That's mean.

Anyways I see it going 80%-100% development chance.
Member Since: August 3, 2011 Posts: 0 Comments: 29
Quoting angiest:

We had a bunch of red flag warnings in the spring months, with winds 25-35mph and humidity below 15% (in Houston!!).
Someone's modeled fire potential:

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The COC is 23N 78W moving WNW.
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The COC of Wave Emily is SW of Little Creek Bahamas.
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Quoting Tropicsweatherpr:
Levi,I think is this big wave in Central Africa that GFS and other models develop right?



Well the GFS actually does try to devleop that one, but that's the 2nd one. The GFS and ECMWF both develop the one that's near the west African coast right now, a bit west of where your image.

Back later.
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Quoting Gearsts:
Building Ridge north.
lol i quoted myself sorry
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Quoting Levi32:
The steering philosophy is exactly the same as it was when Emily still had a name. She has essentially stayed on the course she would have taken, and just as forecasted, it is passing within 100 miles of the Florida coastline, very close, and then curving up and out eventually through a weakness between the Texas ridge and the Atlantic ridge, which is currently over Georgia.


Will the fact that she would be weaker... and it's later in the game... possibly mean a closer pass along the FL coast heading into late weekend?
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Quoting Gearsts:
Building Ridge north.
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Quoting FromMy11YearOldSon:
Fine, be picky :)

800 PM UPDATE POLL


A: 60%- Chance Of Development
B: 60/80% Chance Of Development
C: 80%-100% Chance of Development
D: Tropical Depression Emily
E: Tropical Storm Emily


But for the second two you need a special advisory. ;)

Just messing with you at this point.
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The steering philosophy is exactly the same as it was when Emily still had a name. She has essentially stayed on the course she would have taken, and just as forecasted, it is passing within 100 miles of the Florida coastline, very close, and then curving up and out eventually through a weakness between the Texas ridge and the Atlantic ridge, which is currently over Georgia.
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hmmmmmmmmmmmmmmmmmmmm
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Fine, be picky :)

800 PM UPDATE POLL


A: 60%- Chance Of Development
B: 60/80% Chance Of Development
C: 80%-100% Chance of Development
D: Tropical Depression Emily
E: Tropical Storm Emily
Member Since: August 3, 2011 Posts: 0 Comments: 29
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Quoting atmoaggie:
One would think.

Assuming she can get out of her house (as in actually sell it), mom is out of there ASAP. Tired of the weather extremes of the plains...and I don't blame her.

Minus 20F to 110F in six months...and back again in the next 6 months.

We had a bunch of red flag warnings in the spring months, with winds 25-35mph and humidity below 15% (in Houston!!).
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Quoting Levi32:


Was I magically summoned without my knowledge? Lol.


The weirdest thing... someone mentioned that they were looking forward to your take... and then I refreshed the page... and you were back on.

Not running multiple handles are you?

j/k
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Levi,I think is this big wave in Central Africa that GFS and other models develop right?

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Quoting FromMy11YearOldSon:
500 UPDATE POLL

A: 60%- Chance Of Development
B: 60/80% Chance Of Development
C: 80%-100% Chance of Development
D: Tropical Depression Emily
E: Tropical Storm Emily


The first three almost certainly won't happen at 5:00. That would require a special TWOAT.
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Quoting Gearsts:
Levy is that the first wave off the cost of africa or the second wave?240 hours


First one, actually. The ECMWF gets it stuck in the ITCZ without moving for a few days before developing it. With the ECMWF and GFS both trying to develop it, it is worth watching closely.
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Quoting angiest:


That should warrant a fire weather watch or a red flag warning, I think.
One would think.

Assuming she can get out of her house (as in actually sell it), mom is out of there ASAP. Tired of the weather extremes of the plains...and I don't blame her.

Minus 20F to 110F in six months...and back again in the next 6 months.
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Quoting HurricaneHunterJoe:


hmmmmmmmmmmmmmmmmmmmmm


The pressures that are significantly lower are either at a higher elevation or are not correct.
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TS Emily Update with Video
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Quoting Seflhurricane:
where is harbour island


Around 25N 76W... About 90 miles NE of Andros Town on Andros Island.
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500 UPDATE POLL

A: 60%- Chance Of Development
B: 60/80% Chance Of Development
C: 80%-100% Chance of Development
D: Tropical Depression Emily
E: Tropical Storm Emily
Member Since: August 3, 2011 Posts: 0 Comments: 29
999.7 hmmmmmmmmmmmmmmmmmmm
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Quoting Levi32:


Was I magically summoned without my knowledge? Lol.
Levy is that the first wave off the cost of africa or the second wave?240 hours
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hmmmmmmmmmmmmmmmmmmmmm
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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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