Chicago and Milwaukee hit 103°; relief coming by Sunday

By: Dr. Jeff Masters , 2:34 PM GMT on July 06, 2012

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It was another day of triple-digit heat across the Midwest Thursday, as the nation continued to bake in the intense heat of the record-breaking summer of 2012. Chicago hit 103° on Thursday, just 2° below the city's all-time hottest temperature of 105°, set on July 24, 1934. The Windy City might have exceeded their all-time heat record, but for the fortuitous formation of a small but intense thunderstorm that hit the airport at 2:45 pm. The storm brought a wind gust of 52 mph to the airport and cooled the temperature by 20°. A wind gust of 92 mph was recorded 4 miles offshore over Lake Michigan. Thursday was the hottest day in Chicago since a 104° reading on July 13, 1995. Milwaukee, WI also hit 103° Thursday, which tied for the 3rd hottest temperature in city history. Madison's 104° was their hottest day since 1988, and also tied for the 3rd warmest temperature ever measured in the city. Madison's all-time high is 107°, set July 14, 1936. St. Louis hit 105°, the eighth consecutive day the city has hit triple digits. This streak is now the 3rd longest such streak in city history; the only longer streaks occurred during the Dust Bowl summer of 1936 (streaks of 13 and 9 days.) The current forecast for St. Louis calls for highs of 107 - 108° Friday and Saturday, which will likely bring the city's streak of 100°+ days to ten by week's end. St. Louis' all-time hottest temperature is 115°, set in 1954.


Figure 1. The severe weather map for Friday, July 6, 2012, showed that advisories for extreme heat (pink colors) were posted for portions of 25 states.

The forecast: record heat Friday and Saturday, then relief
More record-breaking triple-digit heat is expected Friday and Saturday across much of the Midwest and Tennessee Valley, but a cold front will move southwards out of Canada on Saturday and Sunday, putting an end to this phase of the great heat wave of 2012. By early next week, temperatures will be near average for most of the eastern 2/3 of the U.S.

Quiet in the Atlantic
There are no threat areas to discuss in the Atlantic, and none of the reliable computer models are developing a tropical cyclone over the next seven days.

Jeff Masters

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227. wxmod
Quoting BobWallace:




I always wonder about the people who comment here who don't understand this graph.
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Worst cell in LA and MS.

Headed WSW i.e. from ENE.

F0 61 dBZ 40,000 ft. 35 kg/m² 40% chance 100% chance 1.25 in. 25 knots ENE (58)
Member Since: January 25, 2012 Posts: 33 Comments: 1520
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Member Since: September 18, 2010 Posts: 0 Comments: 5248
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15

Quoting KEEPEROFTHEGATE:
i need ya all to pick a number 1 to 49 i need 14 people to pick a number
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From the look on the satellite,Wannabe Emilia appears to have Northeasterly Shear? and at the same time ventilation from a Anti-Cyclone?
Member Since: September 18, 2010 Posts: 0 Comments: 5248
Quoting KEEPEROFTHEGATE:
i need ya all to pick a number 1 to 49 i need 14 people to pick a number


6
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Quoting KEEPEROFTHEGATE:
i need ya all to pick a number 1 to 49 i need 14 people to pick a number


21
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219. MTWX
Quoting KEEPEROFTHEGATE:
i need ya all to pick a number 1 to 49 i need 14 people to pick a number

21
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Quoting nigel20:

23
33
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Quoting KEEPEROFTHEGATE:
i need ya all to pick a number 1 to 49 i need 14 people to pick a number
33
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Quoting KEEPEROFTHEGATE:
i need ya all to pick a number 1 to 49 i need 14 people to pick a number

23
Member Since: November 6, 2010 Posts: 12 Comments: 8465
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212. MTWX
Storm that came through last night rendering our NEXRAD useless. Trees were down everywhere and it took me forever to get to the site trying to navigate blocked roads. (if this streaches the blog, I do appologize and will remove it promptly)

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We've seen quite a few extreme heat waves over the past decade or so, especially the 2003 European heat wave and the 2010 Russian heat wave.
Member Since: November 6, 2010 Posts: 12 Comments: 8465
Not a lot of wind going on, except when a new cell is approaching.

They are mostly stationary right now.

Getting a lot of heavy rains though. Much appreciated.

We'll probably get several inches today before it's over, which is very good thing, since the grass is dying from drought near the base of the trees, even with some watering...
Member Since: January 25, 2012 Posts: 33 Comments: 1520
57

Quoting KEEPEROFTHEGATE:
i need ya all to pick a number 1 to 49 i need 14 people to pick a number
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Quoting KEEPEROFTHEGATE:
i need ya all to pick a number 1 to 49 i need 14 people to pick a number


13
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At least we'll get back to the mid 80s by Monday. That'll be a welcome relief from the 11 day heat wave!
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Quoting WxGeekVA:


No need to rub it in. :P
This summer has been miserable.I'm so happy to see 80's in the forecast after 11 days of this awful heat.
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i need ya all to pick a number 1 to 49 i need 14 people to pick a number
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Quoting VINNY04:
... Heat advisory remains in effect until 8 PM EDT this evening...
... Excessive heat warning in effect from 11 am to 10 PM EDT
Saturday...

The National Weather Service in Baltimore MD/Washington has
issued an excessive heat warning... in effect from 11 am to 10 PM
EDT Saturday. The excessive heat watch is no longer in effect.

* Heat indices... around 105 this afternoon. Around 110 Saturday
afternoon.

* Maximum temperatures... around 100 this afternoon. 100 to 105
Saturday afternoon.

* Impact... high risk of heat exhaustion or other heat-related
illness for those without air-conditioning or those spending
time outdoors for an extended period.

Precautionary/preparedness actions...

A heat advisory and an excessive heat warning mean that a period
of hot temperatures is expected. The combination of hot
temperatures and high humidity will create a situation in which
heat illnesses are possible. Drink plenty of fluids... stay in an
air-conditioned room... stay out of the sun... and check in on
relatives and neighbors.

Take extra precautions if you work or spend time outside. When
possible... reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose-fitting clothing when possible
and drink plenty of water.

To reduce risk during outdoor work... the occupational safety and
health administration recommends scheduling frequent rest breaks
in shaded or air-conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency - call 9 1 1.


Im Thankful im in Florida right now.


No need to rub it in. :P
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Quoting WxGeekVA:


Yeah, LWX is saying 104 for my zone forecast and the BestForecast is saying 105.... Heat index values could hit 115 and that's just dangerous. Gonna stay inside all day tomorrow, cause this is gonna be a hot one!
I'm not going out either.The kids are happy though because it's to hot to cook.So we'll likely be ordering out.
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... Heat advisory remains in effect until 8 PM EDT this evening...
... Excessive heat warning in effect from 11 am to 10 PM EDT
Saturday...

The National Weather Service in Baltimore MD/Washington has
issued an excessive heat warning... in effect from 11 am to 10 PM
EDT Saturday. The excessive heat watch is no longer in effect.

* Heat indices... around 105 this afternoon. Around 110 Saturday
afternoon.

* Maximum temperatures... around 100 this afternoon. 100 to 105
Saturday afternoon.

* Impact... high risk of heat exhaustion or other heat-related
illness for those without air-conditioning or those spending
time outdoors for an extended period.

Precautionary/preparedness actions...

A heat advisory and an excessive heat warning mean that a period
of hot temperatures is expected. The combination of hot
temperatures and high humidity will create a situation in which
heat illnesses are possible. Drink plenty of fluids... stay in an
air-conditioned room... stay out of the sun... and check in on
relatives and neighbors.

Take extra precautions if you work or spend time outside. When
possible... reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose-fitting clothing when possible
and drink plenty of water.

To reduce risk during outdoor work... the occupational safety and
health administration recommends scheduling frequent rest breaks
in shaded or air-conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency - call 9 1 1.


Im Thankful im in Florida right now.
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200. CJ5
Quoting weatherh98:
Joe when something refers to drugs on a weather blog and its hurricane season, youre asking for a ban, no offense


Really?? Jeez, that is a bit of a stretch.
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I still expect one storm this month.....Also the pattern in the Atlantic represents that of La nina(for now all though soon to change) with that huge miserable ridge causing all this heat...
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Quoting VINNY04:
I agree with you. Thats a good point. If it can destroy as muc as it does now with modern buildings then just think of what it can do to buildings that old and people who never understood what a hurricane was or how to prepare for it.


Actually, the stone temples were left; it's the people that were probably blown or washed away......
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Quoting weathermanwannabe:


I do not follow the E-Pac climatology so don't know of any "loop de loop" E-Pac storms that have come back inland but there may have been a few. Their big problem down there (Central America) are the Atlantic side CV storms that plow through there from time to time like Hurricane Mitch several years ago (I lost a friend in Honduras down there in a mudslide from all the rain).

Lot's of "new age" folks attribute the sudden disappearance of the ancient Mayan civilization on "aliens". I have a more down to earth theory....A couple a strategically placed Cat 5's in a bad steering pattern year towards Central America will do that.........
I agree with you. Thats a good point. If it can destroy as muc as it does now with modern buildings then just think of what it can do to buildings that old and people who never understood what a hurricane was or how to prepare for it.
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Quoting washingtonian115:
Tomorrow it'll be 103.We could reach our all time high here in D.C.Today we're gonna hit 102.The Atlantic is dead...for now.The east pacific is pumping out storms left and right luckily they're going out to sea.


Yeah, LWX is saying 104 for my zone forecast and the BestForecast is saying 105.... Heat index values could hit 115 and that's just dangerous. Gonna stay inside all day tomorrow, cause this is gonna be a hot one!
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Thunderstorms parked over Livingston and the Northshore area.

I see we have a big squall line coming soon from Mississippi.

So far only very heavy rain and some strong gusts with variable directions.

Probably get the worst weather in a few hours when the squall gets here.

Supposedly these storms have half inch to 3/4 inch max hail size, so maybe see some of that too..
Member Since: January 25, 2012 Posts: 33 Comments: 1520
Quoting ClimateChange:
Climate science skeptic Dr. Roy Spencer reports the global lower tropospheric temperature for June was 0.37C above the 1981-2010 mean value. This is the third highest reading on record for the month, behind June 1998 at 0.51C and June 2010 at 0.39C. What makes this month unique is both of those years were coming off substantial El Ninos. Of course, 1997-98 was the year of the super Nino and 2009-10 was a high-end moderate Nino. This year, we are coming off a modest La Nina and equatorial Pacific readings are just now entering into El Nino levels. This supports continued warmth over the next 12 to 13 months, especially since some models take El Nino to moderate or strong levels by December.

We also had a moderate to strong la nina 2010-2011...2010 was also one of the hottest and wettest year in recorded history.
Member Since: November 6, 2010 Posts: 12 Comments: 8465
Quoting nigel20:

It's never gone over 97F here in Kingston...I'm not sure if i could deal with the temps mentioned above.
Lucky you! No one can ever get used to heat that high. I have lived in Florida all my life and never have gotten used to heat over 100 degrees.
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Quoting VINNY04:
Yah i noticed that. not many Hit Centeral America. Is there a specific reason for that or is it just that they never go there?


I do not follow the E-Pac climatology so don't know of any "loop de loop" E-Pac storms that have come back inland but there may have been a few. Their big problem down there (Central America) are the Atlantic side CV storms that plow through there from time to time like Hurricane Mitch several years ago (I lost a friend in Honduras down there in a mudslide from all the rain).

Lot's of "new age" folks attribute the sudden disappearance of the ancient Mayan civilization on "aliens". I have a more down to earth theory....A couple a strategically placed Cat 5's in a bad steering pattern year towards Central America will do that.........
Member Since: Posts: Comments:
Quoting nigel20:

It's never gone over 97F here in Kingston...I'm not sure if i could deal with the temps mentioned above.
Add humidity as well it's just miserable.It's like a blanket outside.It's really dangerous to be out there for long periods of time.
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Quoting dabirds:
Okie from Muskogee - first line We don't smoke...
Oh ok
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Quoting VINNY04:
Im with joe. i dont get it Either.
Okie from Muskogee - first line We don't smoke...
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Quoting washingtonian115:
Tomorrow it'll be 103.We could reach our all time high here in D.C.Today we're gonna hit 102.The Atlantic is dead...for now.The east pacific is pumping out storms left and right luckily they're going out to sea.

It's never gone over 97F here in Kingston...I'm not sure if i could deal with the temps mentioned above.
Member Since: November 6, 2010 Posts: 12 Comments: 8465
Quoting nigel20:

There have been quite a few...Felix, Richard, Dean, Gilbert..etc. The most notable being hurricane Mitch which caused 19000+ casualties.
Oh. Maybe its that im not very observant with what happends outside of the States weather wise. I joined this website not too long ago so im still learning.
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Climate science skeptic Dr. Roy Spencer reports the global lower tropospheric temperature for June was 0.37C above the 1981-2010 mean value. This is the third highest reading on record for the month, behind June 1998 at 0.51C and June 2010 at 0.39C. What makes this month unique is both of those years were coming off substantial El Ninos. Of course, 1997-98 was the year of the super Nino and 2009-10 was a high-end moderate Nino. This year, we are coming off a modest La Nina and equatorial Pacific readings are just now entering into El Nino levels. This supports continued warmth over the next 12 to 13 months, especially since some models take El Nino to moderate or strong levels by December.
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Quoting nigel20:

There have been quite a few...Felix, Richard, Dean, Gilbert..etc. The most notable being hurricane Mitch which caused 19000+ casualties.

Edit..my bad...you're talking about the E pacific side.
Member Since: November 6, 2010 Posts: 12 Comments: 8465
.
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Quoting VINNY04:
Yah i noticed that. not many Hit Centeral America. Is there a specific reason for that or is it just that they never go there?

There have been quite a few...Felix, Richard, Dean, Gilbert..etc. The most notable being hurricane Mitch which caused 19000+ casualties.
Member Since: November 6, 2010 Posts: 12 Comments: 8465
Kick em north up 55 Pat! Maybe Sunday night, oh well. Afraid it's going to be too late most of the corn already tasseled and ears on. Looked good with that early start, not so much now.
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180. MTWX
Love how SPC has started putting "chances of a Watch being issued" on their Mesoscale Discussions!

MESOSCALE DISCUSSION 1417
NWS STORM PREDICTION CENTER NORMAN OK
1242 PM CDT FRI JUL 06 2012

AREAS AFFECTED...SERN MO...SRN IL...SWRN IND...WRN KY...WRN
TN...NERN AR

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 061742Z - 061915Z

PROBABILITY OF WATCH ISSUANCE...5 PERCENT
SUMMARY...ISOLATED TO SCATTERED THUNDERSTORM DEVELOPMENT IS POSSIBLE
THIS AFTERNOON ACROSS PORTIONS OF SERN MO...SRN IL...SWRN IND...WRN
KY/TN...AND NERN AR. A HOT BOUNDARY LAYER AIRMASS WILL PROMOTE THE
OCCURRENCE OF A FEW DAMAGING WIND GUSTS. HOWEVER...THREAT WILL BE
TOO LIMITED FOR A WW.

DISCUSSION...SURFACE OBSERVATIONS AT 17Z SHOW TEMPERATURES WARMING
TO AROUND 100F ACROSS THE MID SOUTH...WHILE DEWPOINTS HAVE LOCALLY
MIXED DOWN INTO THE LOW 60S OVER SRN IL. STRONG BOUNDARY LAYER
DESTABILIZATION IS AIDING IN THE DEVELOPMENT OF TOWERING CUMULUS
FROM SERN MO/SRN IL INTO PORTIONS OF WRN KY AND SWRN IND. THESE
OBSERVED TRENDS...AS WELL AS SHORT TERM GUIDANCE FROM THE
HRRR...SUGGEST ISOLATED TO SCATTERED THUNDERSTORMS MAY INITIATE
DURING THE NEXT FEW HRS...AND THEN MOVE S-SWWD AROUND A MIDLEVEL
ANTICYCLONE. GIVEN THE LARGE TEMPERATURE-DEWPOINT SPREADS IN THE
BOUNDARY LAYER...A FEW STORMS MAY BE CAPABLE OF PRODUCING DAMAGING
DOWNBURST WINDS.

..GARNER/WEISS.. 07/06/2012
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Quoting hydrus:
I down loaded from my camera to my computer, so there is no url for me to copy and paste. That is where I am lost.


Open a free account at PhotoBucket (or another hosting site).

Upload your pictures to there.

Resize them to fit the page. (450 pixels wide is the max?)

Right click on the resized image and you'll have the the URL to past into the Image box.


I just copied a .png from the web, resized it and saved it as a jpeg in Photobucket so that I could use it to show what is happening to the Arctic sea ice.

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Quoting stormwatcherCI:
You are joking , right ? Ice Cube is the black guy in Friday, Are We There Yet and Anaconda.

I made my comment lamenting that people did not know who ice cube was... it makes me feel old, as he was a big feature of pop culture when I was a teenager. (and I'm speaking more of his musical career, and who he collaborated with)
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Tomorrow it'll be 103.We could reach our all time high here in D.C.Today we're gonna hit 102.The Atlantic is dead...for now.The east pacific is pumping out storms left and right luckily they're going out to sea.
Member Since: Posts: Comments:

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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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