July 22, 2011: A day of records

By: Dr. Jeff Masters , 4:56 PM GMT on July 23, 2011

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The crest of the extreme heat wave of July 2011 has passed, although temperatures are still going to be dangerously hot in the Mid-Atlantic and Northeast today. New York City (Central Park) will reach 100° again, as well as Philadelphia and possibly Washington Dulles. Heat index values could surpass the 110° mark today, and excessive heat warnings are in effect from New York City to South Carolina, as well as a large portion of the Central United States. Yesterday, the heat index soared past 120° in Wilmington, DE (124), Easton, MD (125), Annapolis, MD (120) and Atlantic City, NJ (122), among others. A more complete list of Friday's heat index extremes can be found here.

Numerous records fell yesterday as far north as Maine. There were plenty of daily records to talk about, but here are some of the noteworthy all-time record high temperatures:

Newark, NJ: 108° (old record was 105° set in 2001)
Washington Dulles, DC: 105° (old record was 104° on multiple dates)
Bridgeport, CT: 103° (ties the old record set in 1957)
Hartford, CT: 103° (old record was 102° set on multiple dates)
New Haven, CT: 102° (old record was 101° set in 1926)

Baltimore hit 106°, one degree shy of their all-time high record which was set in 1936. New York City (Central Park) set a daily record of 104°, which was 2 degrees shy of their 106° all-time high record, which was also set in 1936. More on the record-setting year of 1936 in yesterday's blog from Jeff. Two notable all-time record high minimums were also set yesterday: 84° in New York (Central Park) and 86° in Newark, NJ.

Our weather historian, Christopher C. Burt, keeps track of 303 select stations in the U.S. with long standing record histories. So far this summer, seven of these have broken or tied their all-time maximum temperature records. Some of these were long-standing:

• Amarillo, TX 111° (1892)
• Dodge City, KS 110° (1874 tied)
• Newark, NJ 108° (1893)
• D.C. Dulles 105° (1962)
• Tallahassee, Fl 105° (1883)
• Hartford, CT 103° (1885)
• New Haven, CT 102° (1780)

The last summer to have more all-time high records than this year was 2002, which set 9. Christopher C. Burt estimates that yesterday probably rates in the top five hottest days on record for the mid-Atlantic states (Washington D.C. to Boston).

Invest 90L


Satellite imagery of NHC Invest 90L this morning.

Invest 90L is looking ragged on satellite as it makes its way across the Caribbean islands. While this wave looked ripe for eventual development earlier this week, it has really taken a turn for the worse as it moved across the Main Development Region of the North Atlantic. Today, low level circulation is could favorably be described as less than moderate, and almost nonexistent at higher levels. Today, not one of the global models I've looked at (ECMWF, NOGAPS, CMC, UKMET, or GFS) develop 90L, but they are coming into better agreement that the wave's track will be across the Caribbean islands and into the Gulf of Mexico, rather than up the east coast of Florida. This could be one of the reasons the models are not suggesting development—too much land interaction, not enough time over open warm waters. However, its hard to say that this wave will not show some signs of improvement when it reaches the Gulf. Water will be toasty, moisture will be relatively high, and wind shear will remain incredibly low. Today the National Hurricane Center is giving this wave a 20% chance of development over the next 48 hours. My forecast has been the same for the past two days, right around 20% chance of development over the lifetime of the wave.

Thanks to our weather historian Christopher C. Burt for some useful information on heat waves and yesterday's records. I'll have another blog on Monday.

Angela

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I have whatever circulation there is just off to the SW of the Haitian pennisula around 18/75
Member Since: April 29, 2007 Posts: 0 Comments: 7506
1760. KEEPEROFTHEGATE (Mod)
revised location
XX/INV/90L
MARK
19.11N/74.61W
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That convection around 75w, 19n looks like it developed as soon as it left the SW coast of Haiti, although it looks to be headed into Cuba. 90L wants to get going but the land is getting in the way. We'll have to see what happens when it hits Cuba.
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small bit of yellow just above Jamaica!
Member Since: April 29, 2007 Posts: 0 Comments: 7506
Quoting TropicalAnalystwx13:
75W, 19.2N?



Interesting.
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Quoting MrCowan:


JP, please do not complain, cause lack of SAL is a very good thing, my friend. Keep in mind that SAL retards TC formation and growth!


are you crazy... we dont want tropical storms we want to have a record season... record low that is
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Evening Baha,
windy this evening,
but so far only one small shower earlier today.
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1753. KEEPEROFTHEGATE (Mod)
Quoting JrWeathermanFL:
Is 90L that big tropical wave that came off the coast of Africa? Everyone said LOOK AT THIS!! That one?
ya she be from 8 28 last sunday had a nice spin

XX/INV/90L
MARK
18.81N/73.73W
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1752. JLPR2
Tropical Depression 10 on the Western Pacific is the only tropical cyclone in the world at the moment.

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1751. JLPR2
Quoting Dakster:
Is that an uptick in thunderstorm activity for 90L I see in your post JLPR2?


90L is not dead, but it isn't doing that well either.
But yeah, went from nude to some cover. XD
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Tropical Waves lovers strike again.Let's the things going on.
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1748. Dakster
Is that an uptick in thunderstorm activity for 90L I see in your post JLPR2?
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Hey, Chick... hoping for some soothing rains and not much in the way of winds and spinning with this one...
Member Since: October 25, 2005 Posts: 19 Comments: 20742
1746. JLPR2
Jeez we'are not only low on SAL but on dry-air in general.



I miss the SAL outbreaks of past years. :\
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75W, 19.2N?


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1742. Dakster
Quoting floodzonenc:


The NWS wants public input on a new scale for measuring the size of hailstones.  Under the new proposed scale, the hailstones formerly referred to as "softball" sized would now be referred to as "baby-head" sized.  Your input is greatly valued.


OMG, that hail is huge! I would hate to have that hit me or anything I owned...

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Quoting JrWeathermanFL:
Storm2K.org shows a TD in the Carribian. 30 mph.


No...

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1740. rod2635
Quoting JLPR2:
This is what the Nogaps develops.


Also JRRP, seems the GFS is back onboard with a Cave verde system, interesting.


Next named storm on 7/31
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SCATTERED SHOWER/THUNDERSTORMS...SOME STRONG...ARE MOVING N FROM HISPANIOLA TOWARDS TURKS AND CAICOS ASSOCIATED WITH A TROPICAL WAVE ACROSS HAITI WHICH EXTENDS NWD TO 24N71W. SHOWER ACTIVITY WILL CONTINUE TO IMPACT THE WATERS AND ISLANDS N OF THE CENTRAL CARIBBEAN AS THE WAVE MOVES WNW.

No biggie.
It's rain without a lot of wind.
Good stuff until it starts causing mudslides due to deforestation.
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LOL, premie, baby and toddler...
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Storm2K.org shows a TD in the Carribian. 30 mph.
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rofl flood zone.
baby-faced-sized hail.
good one.
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Quoting floodzonenc:


The NWS wants public input on a new scale for measuring the size of hailstones.  Under the new proposed scale, the hailstones formerly referred to as "softball" sized would now be referred to as "baby-head" sized.  Your input is greatly valued.


LOL, I saw the picture and thought Dewey was posting something.
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Quoting floodzonenc:


The NWS wants public input on a new scale for measuring the size of hailstones.  Under the new proposed scale, the hailstones formerly referred to as "softball" sized would now be referred to as "baby-head" sized.  Your input is greatly valued.
+1
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Well, it sounds like the only thing thats keeping 90L from strengthening is land. Is that all?
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may 90L is now starting too feel some lower wind shear
Member Since: May 21, 2006 Posts: 5089 Comments: 114072
Good evening, the NHC never put a floater on 90L.
At 8 p.m. they said TROPICAL WAVE CONTINUES TO PUSH ACROSS THE N CENTRAL CARIBBEAN
CURRENTLY OVER HAITI FROM 24N72W TO 16N72W MOVING WNW NEAR 20
KT. VERY BROAD SURFACE CYCLONIC FLOW CAN BE SEEN IN VISIBLE
SATELLITE IMAGERY WITH MORE EVIDENT CYCLONIC FLOW IN THE LOW-MID
LEVEL CLOUDS. TOTAL PRECIPITABLE WATER IMAGERY INDICATES HIGH
MOISTURE VALUES SURROUND THE WAVE FROM 15N-25N BETWEEN 65W-77W.

NUMEROUS STRONG CONVECTION IS FROM 19N-21N BETWEEN 69W-71W...AND FROM 20N-21N BETWEEN 72W-74W WITH MODERATE CONVECTION COVERING THE REMAINDER OF THE AREA FROM 18N-21N BETWEEN 66W-76W. SCATTERED MODERATE CONVECTION IS FROM 18N-21N BETWEEN 76W-80W.
MUCH OF THIS ACTIVITY IS ACROSS HISPANIOLA WHICH HAS ALREADY RECEIVED HIGH RAINFALL AMOUNTS. WITH SATURATED GROUNDS IN HIGH TERRAIN...FLOODING AND MUDSLIDES ARE POSSIBLE AS THE WAVE CONTINUES TO MOVE WNW. AS THE WAVE AND MOISTURE CONTINUE TOWARDS CUBA...SHOWER ACTIVITY WILL INCREASE ACROSS THE ISLAND.

And I have to go back to work tomorrow...wow. What an adjustment! Good night.
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Texas' drought is bad. They need another Edouard.
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BBS
Member Since: October 25, 2005 Posts: 19 Comments: 20742
Quoting JrWeathermanFL:
Is 90L that big tropical wave that came off the coast of Africa? Everyone said LOOK AT THIS!! That one?


Yes, the very same.
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1722. JLPR2
This is what the Nogaps develops.


Also JRRP, seems the GFS is back onboard with a Cave verde system, interesting.
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Quoting JrWeathermanFL:
Is 90L that big tropical wave that came off the coast of Africa? Everyone said LOOK AT THIS!! That one?
Yep.
Member Since: October 25, 2005 Posts: 19 Comments: 20742
Quoting Goldenblack:
Yeah Baha, I can see where that might have dampened your spirits. Is this a hobby of yours?

I may be in Florida, but I am equally wary of all systems for all people in the Atlantic Basin. They are fascinating, deadly spectacles of nature.....

It's something I enjoy doing when and as time permits... haven't done any training since '09. The two times I've been to Tampa have been on the Silver Star.... lol... one of my fave "back-in stations"...

I agree with you on the worry and fascination of TCs...
Member Since: October 25, 2005 Posts: 19 Comments: 20742
Is 90L that big tropical wave that came off the coast of Africa? Everyone said LOOK AT THIS!! That one?
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1717. rod2635
Quoting rod2635:


B


Once again correct.
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Bob Show

Link
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Quoting Tropicsweatherpr:


Baha, notice the ITCZ at 10N. Is getting close to CV time.
I also notice the TAFB pressure forecasts are suggesting some slight Nward moderation of the high over the next few days... nothing permanent, but about as far north as I've seen it so far this season. [I mean the equaterward edge, not so much the overall location.]
Member Since: October 25, 2005 Posts: 19 Comments: 20742
Awesome, thanks. I always appreciate a new link to info!



Quoting BahaHurican:
Yeah. They update them every six hours. If you go to the OPC website they have most of the Nrn Hemisphere in the Unified Analysis.

http://www.opc.ncep.noaa.gov/
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Quoting Goldenblack:
Interesting positioning....time stamp was from just 4-5 hours ago (its 00:17 UTC right now)...

Yeah. They update them every six hours. If you go to the OPC website they have most of the Nrn Hemisphere in the Unified Analysis.

http://www.opc.ncep.noaa.gov/
Member Since: October 25, 2005 Posts: 19 Comments: 20742

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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.