Dewpoints in IA/MN

Joined
Sep 25, 2006
Messages
390
Location
Mason City IA
Anybody see the dewpoints surging northward through IA? Already hitting 78 and higher in some places and its only 11 am. LOL, nice 6500 Cape Values over me already here....definitely a muggy day out there.
 
Evaportranspiration. Its that time of the year, I hate to see so many of these days go to waste under muggy sunshine and a field of fail-cu that cant amount to anything. If only we could get these dews in April or May.
 
Yea it is always a shame to see these big moisture, extreme CAPE events go to waste but the once in a blue moon time they do happen can lead to some violent events. A few include August 28, 1990 Plainfield, IL F5 Tornado, where the dews were in the low 80s and CAPE soared to 8000+ j/kg, July 18, 1996 the Wisconsin F5, and Iowa has also had their share but I can't remember the name. I guess as long as you can get enough CAPE (at least 6500 j/kg) shear doesn't matter much.
 
A recent ob from the AWOS at Algona: 90/86 with a heat index of 126! Wow.

You can check obs over Iowa easily every hour at http://mesonet.agron.iastate.edu/data/mesonet.gif

Yeah, I was actually going to bring up KAXA but that station always reads way higher than surrounding stations so I just kind of dont pay any attention to it.

We already have 89/79 here for a heat index of 105.
 
Location: Newton, IA
Temp: ~91F
Dew Point: 80F
Heat Index: 110

It's like walking into a freaking wet sock...I don't even want to go out for lunch :)
 
Yea it is always a shame to see these big moisture, extreme CAPE events go to waste but the once in a blue moon time they do happen can lead to some violent events. A few include August 28, 1990 Plainfield, IL F5 Tornado, where the dews were in the low 80s and CAPE soared to 8000+ j/kg, July 18, 1996 the Wisconsin F5, and Iowa has also had their share but I can't remember the name. I guess as long as you can get enough CAPE (at least 6500 j/kg) shear doesn't matter much.

Both of those days were high shear events as well.
 
Last night at 10:00 here in Lincoln, NE it was 89/80, with all the windows on our house fogging up a bit on the outside. Not sure I've ever seen it quite this muggy here in NE!
 
Newton, IA 1:15pm CDT:

Temp: 93 F
Dewpoint: 84 F
Heat Index: 120 F

I seriously cannot imagine what that kind of oppressive humidity feels like. Wow.
 
Just keeps climbing:

Location: Newton, IA
Temp: ~93F
Dew Point: 86F
Heat Index: !125!

Thinking I'm going to skip watching the baseball game in town tonight...
 
2000 UTC METARS:
[FONT=lucida sans typewriter, lucida console, courier]CITY SKY/WX TMP DP RH WIND PRES REMARKS
ATLANTIC * SUNNY 95 81 63 SW9 29.87S HX 115
COUNCIL BLFS * N/A 95 82 66 S9 29.85F HX 119
CRESTON * SUNNY 95 79 59 S14 29.88R HX 112
HARLAN * MOSUNNY 91 75 59 S3 29.88F HX 102
LAMONI SUNNY 94 76 55 S12 29.87F HX 106
RED OAK * SUNNY 97 82 63 S10 29.85S HX 121
SHENANDOAH * N/A 97 86 71 SW8 29.86S HX 130 [/FONT]
[FONT=lucida sans typewriter, lucida console, courier]

Do some of these sites (like Shenandoah and Newton, which I've heard mentioned a few times as "wow, look at this ob") have a normal high bias? I know that some METAR sites in Oklahoma are biased high (e.g. Ardmore and Watonga come to mind right away). 97/85 is absolutely ridiculous if it's an accurate ob! Looking at nearby obs, though, I suspect it may be a few F high.
[/FONT]
 
The Shenandoah site is planted in the middle of a corn field. Its dewpoint always reads a few degrees too high.
 
Record Dew Point

Is there a record high dew point maintained for areas in the United States?
 
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