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Late June/Early July Extreme Heat Episode


Hoosier

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OK OK Alek you win! I skimmed through quickly...didn't look close enough...I saw someone else mentioning that Detroit will not reach 100...Powerball!

The source of your information should have been a sign to ignore it.

As for the run itself, as hot as it will be here and Chicago, Memphis Paducah and St Louis are going to be scorched for at least a week.

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Not to get carried away, which in posting this I probably am, but if we're going to shoot for the stars...this would be the benchmark in Indiana I would think.

Bloomington (July 5-17, 1936): 103, 106, 108, 108, 103, 107, 106, 108, 108, 110, 110, 102, 100

Evansville (July 7-15, 1936): 106, 103, 104, 104, 103, 107, 108, 106, 106

Indianapolis (July 7-15, 1936): 101, 104, 103, 105, 104, 103, 103, 106, 103 (bookended by 99, 98 on the front and 96, 98 on the back)

Lafayette (July 5-17, 1936): 104, 103, 108, 109, 103, 107, 108, 110, 110, 111, 105, 101, 103

South Bend (July 7-15, 1936): 102, 106, 102, 106, 105, 105, 106, 108, 100

Terre Haute (July 5-17, 1936): 104, 106, 107, 107, 103, 107, 107, 108, 108, 110, 106, 101

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OK OK Alek you win! I skimmed through quickly...didn't look close enough...I saw someone else mentioning that Detroit will not reach 100...Powerball!

If you're going to cite my posts, don't take them out of context...

100*F+ is unlikely on Thursday for Detroit.

The potential for Cirrostratus (like last Saturday) is pretty high.

12z NAM is out to lunch.

Note all of the moisture around 500mb...

NAM_218_2012062612_F51_42.5000N_83.0000W.png

When there's that much moisture around 500mb, there's a good chance there will be plenty of cirrus debris around. Recall last Saturday when we were expected to reach the upper 80s/low 90s and were capped off in the low-mid 80s due to the cirrostratus.

DTX discussed this further in their morning discussion, which explains their conservatively forecasted highs for Thursday.

http://forecast.weat...on=4&glossary=1

[quote]REGARDING THE MUCH DRONED ABOUT THURSDAY PERIOD...THE MIDLEVEL RIDGE

IS EXPECTED TO FALL ACROSS SOUTHEASTERN MICHIGAN. THIS WILL ALLOW

THE MIDLEVEL RIDGE AXIS TO PASS OVERHEAD...HERALDING THE ARRIVAL OF

AN ULTRA IMPRESSIVE MIXED LAYER/AND WARM TEMPERATURES ALOFT. IT IS

THIS WARM AIR ALOFT THAT LEADS TO THE QUESTION MARKS CONCERNING

THURSDAY HIGHS. THE NEW TWIST OFFERED BY THIS FORECAST ISSUANCE IS

THE EXPECTATION THAT A COVERAGE OF CLOUDS (SEE ECMWF 500MB RH) WILL

SWEEP ACROSS ALL OF THE AREA DURING THE DAY ON THURSDAY. NOW HOW

OPAQUE THESE CLOUDS WILL BE IS ANYONES GUESS. HOWEVER...TYPICALLY

WITNESS SHORTWAVE MATERIAL AND MID TO HIGH CLOUD DEBRIS PILE UP ON

THE BACKSIDE OF THESE RIDGES. SO...PATTERN RECOGNITION SUGGESTS A

FAIR AMOUNT. STILL DON/T THINK IT WILL IMPACT TEMPERATURES MUCH

GIVEN A WELL MIXED PROFILE...BUT IT SHOULD LIMIT THE RUNAWAY

BEHAVIOR OF DAYTIME TEMPERATURES. SO THE APPROACH THIS ISSUANCE WAS

TO MASSAGE HIGH TEMPERATURES DOWNWARD A FEW DEGREES WITH A SOLID

LOWER TO MIDDLE 90S. WITH THE TANGIBLE INCREASE OF CYCLONIC

VORTICITY ALOFT AND INSTABILITY BUILDING IN THE MIDLEVELS DID ADD A

SLIGHT CHANCE POP DURING THE AFTERNOON FOR MUCH OF THE AREA. STILL

EXPECTING THE ATMOSPHERE TO BE WELL CAPPED...BUT THERE IS A CHANCE

NONETHELESS. DEGREE OF INSTABILITY...SBCAPES IN EXCESS OF 3000-3500

J/KG SIGNIFIES THIS THREAT NEEDS TO BE WATCHED CAREFULLY...AS ANY

CONVECTION THAT WILL FIRE WILL CARRY AN IMMEDIATE SEVERE RISK.[/quote]

That said, if full mixing is realized in combination with the dry grounds, I do think 100*F+ is possible locally. But given the above factors (with us being under the NW flow of the moderately strong upper jet, thus plenty of potential vorticity advection and the ridge flattening as it moves in), 100*F+ doesn't seem likely and low-mid 90s seems like a more reasonable forecast at this time.

To sum it all up, I'm looking beyond the 850mb and 2m temps.

Never mind how unusual 100*F+ weather is in Detroit from the get go.

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From LMK:

In light of the raw data and verydry ground, our forecast highs of 98-99 in the Bluegrass and 102-105

west of I-65 may even be a bit conservative

High temps have been running 2-3 degrees warmer than forecast for a couple of weeks. Would not be surprised at all if we get to 105+.

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12z Euro, straight through to the end of the run, is a nightmare.

Epic. The extreme heat never really leaves especially for areas to our south.

LAF is very close to 7 consecutive 100+ days on that run.

Chicago ends up with 9 consecutive 90+ days(run ends) and 3-4 100+ days.

STL with 9 consecutive 100+ days(run ends).

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Looks like some bad timing for the QCA as far as full potential with this heat wave. The best part of the heat dome passes overhead tomorrow night and early Thursday before settling south by afternoon. May still make a run at 100, but if the timing were a little slower we would have had a crack at 104+.

EDIT: The Euro has sped things up quite a bit regarding the max 850 temps over Iowa/northwest Illinois. It had been very consistent for several days so that sort of sucks.

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Looking forward to seeing the RAP when it comes in range. Given its tendencies I wouldn't be shocked if it has a large area of 110-115+. :guitar:

Man you guys are gonna roast down there Thursday. Looks like the maximum heat swath will run from northern/central MO through central IL, and into Indiana right through the LAF area. Looks like Quincy/Springfield/Bloomington have the greatest potential that day. I'd guess 105-108 in that area. I'll go with 104 for LAF.

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Man you guys are gonna roast down there Thursday.  Looks like the maximum heat swath will run from northern/central MO through central IL, and into Indiana right through the LAF area.  Looks like Quincy/Springfield/Bloomington have the greatest potential that day.  I'd guess 105-108 in that area.  I'll go with 104 for LAF.

Hottest wx I've ever experienced was in Phoenix but this has a chance to be about the hottest I've been in here.  A lot of our 100+ days are squeakers of the 100/101 variety...not this time in all likelihood.

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From the general discussion thread...

Just another look at the central plains...dew points in southern NE between 73-77 currently where the NAM only had a max of 70, GFS much closer.

As nice as higher dews would be for rain, the heat indices would be unbearable

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URGENT - FIRE WEATHER MESSAGE

NATIONAL WEATHER SERVICE NORTHERN INDIANA

643 PM EDT TUE JUN 26 2012

...INCREASED FIRE DANGER ON THURSDAY...

.VERY HOT TEMPERATURES OF 100 TO 105 COMBINED WITH LOW RELATIVE

HUMIDITY AROUND 25 PERCENT AND GUSTY WEST WINDS WILL LEAD TO AN

INCREASED FIRE DANGER RISK ON THURSDAY.

INZ005>009-012>018-020-022>027-032>034-OHZ001-002-004-005-015-016-

024-025-271000-

/O.NEW.KIWX.FW.A.0001.120628T1400Z-120629T0000Z/

ELKHART-LAGRANGE-STEUBEN-NOBLE-DE KALB-STARKE-PULASKI-MARSHALL-

FULTON IN-KOSCIUSKO-WHITLEY-ALLEN IN-WHITE-CASS IN-MIAMI-WABASH-

HUNTINGTON-WELLS-ADAMS-GRANT-BLACKFORD-JAY-WILLIAMS-FULTON OH-

DEFIANCE-HENRY-PAULDING-PUTNAM-VAN WERT-ALLEN OH-

643 PM EDT TUE JUN 26 2012 /543 PM CDT TUE JUN 26 2012/

...FIRE WEATHER WATCH IN EFFECT FROM THURSDAY MORNING THROUGH

THURSDAY EVENING FOR INCREASED FIRE DANGER FOR MOST OF NORTHERN

INDIANA AND NORTHWEST OHIO...

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

FIRE WEATHER WATCH FOR INCREASED FIRE DANGER...WHICH IS IN EFFECT FROM

THURSDAY MORNING THROUGH THURSDAY EVENING.

* AFFECTED AREA...FIRE WEATHER ZONE 001 WILLIAMS...FIRE WEATHER

ZONE 002 FULTON OH...FIRE WEATHER ZONE 004 DEFIANCE...FIRE

WEATHER ZONE 005 ELKHART...FIRE WEATHER ZONE 005 HENRY...FIRE

WEATHER ZONE 006 LAGRANGE...FIRE WEATHER ZONE 007 STEUBEN...

FIRE WEATHER ZONE 008 NOBLE...FIRE WEATHER ZONE 009 DE KALB...

FIRE WEATHER ZONE 012 STARKE...FIRE WEATHER ZONE 013 PULASKI...

FIRE WEATHER ZONE 014 MARSHALL...FIRE WEATHER ZONE 015 FULTON

IN... FIRE WEATHER ZONE 015 PAULDING...FIRE WEATHER ZONE 016

KOSCIUSKO...FIRE WEATHER ZONE 016 PUTNAM...FIRE WEATHER ZONE

017 WHITLEY...FIRE WEATHER ZONE 018 ALLEN IN...FIRE WEATHER

ZONE 020 WHITE...FIRE WEATHER ZONE 022 CASS IN...FIRE WEATHER

ZONE 023 MIAMI...FIRE WEATHER ZONE 024 WABASH...FIRE WEATHER

ZONE 024 VAN WERT...FIRE WEATHER ZONE 025 HUNTINGTON...FIRE

WEATHER ZONE 025 ALLEN OH...FIRE WEATHER ZONE 026 WELLS...FIRE

WEATHER ZONE 027 ADAMS...FIRE WEATHER ZONE 032 GRANT...FIRE

WEATHER ZONE 033 BLACKFORD AND FIRE WEATHER ZONE 034 JAY.

* WINDS...WEST 15 TO 20 MPH WITH GUSTS UP TO 25 MPH.

* TIMING...MID MORNING THROUGH EARLY EVENING THURSDAY.

* RELATIVE HUMIDITY...AS LOW AS 20 TO 25 PERCENT.

* TEMPERATURES...100 TO 105 DEGREES.

* LIGHTNING...NONE.

* IMPACTS...NEARLY ALL NORTHERN INDIANA COUNTIES REMAIN UNDER BURN

BANS DUE TO THE THREAT OF WILDFIRES.

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Looking forward to seeing the RAP when it comes in range. Given its tendencies I wouldn't be shocked if it has a large area of 110-115+. :guitar:

Are we at least keeping dews down? I haven't had time lately to look at anything. The desert like atmosphere is much easier to handle than the normal indiana tropics.

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Hill City Kansas reached 115, which broke their all-time June record which was just set the other day. Models look a touch warmer tomorrow so could envision them reaching 116 or 117. 117 is their all-time high temperature.

Setting and an all-time month record and then breaking it and sertting a new one the next day....and then breaking it again and setting a new one again the next ...:yikes:

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Hill City Kansas reached 115, which broke their all-time June record which was just set the other day. Models look a touch warmer tomorrow so could envision them reaching 116 or 117. 117 is their all-time high temperature.

Goodland KS (110) also broke their June monthly record. Also, a new all-time high at McCook, NE (115).

RECORD EVENT REPORT

NATIONAL WEATHER SERVICE GOODLAND KS

718 PM MDT TUE JUN 26 2012

...RECORDS BROKEN ACROSS THE TRI STATE AREA...

A RECORD HIGH TEMPERATURE OF 110 DEGREES WAS SET AT GOODLAND KANSAS

TODAY. THIS BREAKS THE OLD RECORD OF 107 DEGREES SET IN 1971. THIS

IS ALSO THE HIGHEST TEMPERATURE EVER RECORDED IN THE MONTH OF JUNE,

BREAKING THE OLD RECORD OF 109 DEGREES SET JUNE 18, 1936 AND TIED

JUNE 24, 2012.

A RECORD HIGH TEMPERATURE OF 115 DEGREES WAS SET AT HILL CITY KANSAS

TODAY. THIS BREAKS THE OLD RECORD OF 110 DEGREES SET IN 1980. THIS

IS ALSO THE HIGHEST TEMPERATURE EVER RECORDED IN THE MONTH OF JUNE,

BREAKING THE OLD RECORD OF 114 DEGREES SET JUNE 30, 1933 AND TIED

JUNE 24, 2012.

A RECORD HIGH TEMPERATURE OF 106 DEGREES WAS SET AT BURLINGTON

COLORADO TODAY. THIS BREAKS THE OLD RECORD OF 102 DEGREES SET IN

1990.

A RECORD HIGH TEMPERATURE OF 115 DEGREES WAS SET AT MCCOOK NEBRASKA

TODAY. THIS BREAKS THE OLD RECORD OF 103 DEGREES SET IN 1998. THIS

IS ALSO THE HIGHEST TEMPERATURE EVER RECORDED IN THE MONTH OF JUNE,

BREAKING THE OLD RECORD OF 112 DEGREES SET JUNE 5, 1933. IN

ADDITION THIS IS THE HIGHEST TEMPERATURE EVER RECORDED AT THIS

STATION. THE OLD RECORD WAS 114 DEGREES SET JULY 20, 1932.

AN UNOFFICIAL RECORD HIGH TEMPERATURE OF 109 DEGREES WAS SET AT YUMA

COLORADO TODAY. THIS BREAKS THE OLD RECORD OF 103 DEGREES SET IN

1971. THIS IS ALSO THE HIGHEST TEMPERATURE EVER RECORDED IN THE

MONTH OF JUNE, BREAKING THE OLD RECORD OF 108 DEGREES SET JUNE 19,

2012. THIS READING IS FROM AN UNOFFICIAL WEATHER STATION. OFFICIAL

DATA ARE REPORTED BY NATIONAL WEATHER SERVICE COOPERATIVE OBSERVERS

AT THE END OF THE MONTH.

AN UNOFFICIAL RECORD HIGH TEMPERATURE OF 109 DEGREES WAS SET AT

TRIBUNE KANSAS TODAY. THIS BREAKS THE OLD RECORD OF 105 DEGREES SET

IN 1936. THIS READING IS FROM AN UNOFFICIAL WEATHER STATION.

OFFICIAL DATA ARE REPORTED BY NATIONAL WEATHER SERVICE COOPERATIVE

OBSERVERS AT THE END OF THE MONTH.

AN UNOFFICIAL RECORD HIGH TEMPERATURE OF 112 DEGREES WAS SET AT

COLBY KANSAS TODAY. THIS BREAKS THE OLD RECORD OF 108 DEGREES SET

IN 1936. THIS IS ALSO THE HIGHEST TEMPERATURE EVER RECORDED IN THE

MONTH OF JUNE, BREAKING THE OLD RECORD OF 111 DEGREES SET JUNE 24,

2012. THIS READING IS FROM AN UNOFFICIAL WEATHER STATION. OFFICIAL

DATA ARE REPORTED BY NATIONAL WEATHER SERVICE COOPERATIVE OBSERVERS

AT THE END OF THE MONTH.

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