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Weather Conditions Discussion / Re: Spring/Summer '18
« Last post by ValentineWeather on Today at 06:18:38 AM »
There is a huge thread about the Davis SHT31 humidity reliability primarily having a high bias 5-8% humidity especially when hot and humid. Davis is actually taking a serious look into what may be causing this issue.

FYI I've got a couple acurite sht31's that don't display the same high bias so it may very well be the way chip is molded into board or handling, shipping sensors and storing in bubble wrap. The handling procedure stresses to avoid any plastics made of polyethylene which is almost all plus sensor shouldn't be open air but stored in appropriate bags. None of this was being done.

https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/2_Humidity_Sensors/Sensirion_Humidity_Sensors_Handling_Instructions.pdf

These were the peak heat index readings at Tulsa and Stillwater yesterday at airports. Compare to the Davis stations if you own one.   

krvs-109 
ktul-114
KOWP -111
KSWO-113 Stillwater


2
Air Quality Sensors / Re: PM2.5 Air Quality Monitor
« Last post by mcrossley on Today at 04:22:50 AM »
No good.

I'm using 1.1.1.1 Clouldflare private DNS
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Air Quality Sensors / Re: PM2.5 Air Quality Monitor
« Last post by Lucy on Today at 04:10:51 AM »
Hi, mark

Sorry to hear that. How about this link: http://www.ecowitt.com/
Or you can try to search "ecowitt" on google and see whether you can find our website and open it. Maybe there's something wrong with the link I sent to you.

Lucy
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Air Quality Sensors / Re: PM2.5 Air Quality Monitor
« Last post by mcrossley on Today at 03:13:13 AM »
Still a DNS failure for me.
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Severe Weather / Re: SPC Enhanced Risk, 7/20; KY, TN, MS, AL, IN, IL
« Last post by snowlover2 on Today at 01:49:27 AM »
Moderate risk area now and enhanced expanded.

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Quote
DAY 1 CONVECTIVE OUTLOOK   
NWS STORM PREDICTION CENTER NORMAN OK 
1234 AM CDT FRI JUL 20 2018 
 
VALID 201200Z - 211200Z 
 
...THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS FROM WESTERN TN 
TO SOUTHERN IN... 
 
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM LOWER MI TO 
MS AND AL... 
   
..SUMMARY 
 
SEVERE THUNDERSTORMS WILL DEVELOP ACROSS THE OHIO AND TENNESSEE 
VALLEY REGION INTO THE MID-SOUTH FRIDAY. VERY LARGE HAIL, DAMAGING 
WINDS, AND A FEW TORNADOES CAN BE EXPECTED. ISOLATED SEVERE STORMS 
ARE POSSIBLE ACROSS THE CENTRAL HIGH PLAINS. 
   
..OH/TN VALLEYS INTO THE MID-SOUTH 
 
STRONG MID-LEVEL JET, IN EXCESS OF 60KT AT 500MB, IS FORECAST TO DIG 
SOUTHEAST ACROSS THE MID-MS VALLEY REGION FRIDAY AS PRIMARY 
MID-LEVEL CIRCULATION SETTLES INTO THE SOUTHERN LAKE MI AREA DURING 
THE LATTER HALF OF THE PERIOD. WITH 500MB HIGH CENTERED OVER THE 
SOUTHERN HIGH PLAINS, PRONOUNCED MID-LEVEL DIFFLUENCE WILL EXTEND 
ACROSS A GOOD PORTION OF THE OH VALLEY INTO THE CENTRAL GULF STATES. 
THIS LARGE-SCALE REGIME WILL PROVE FAVORABLE FOR ROBUST CONVECTION 
ALONG THE EASTERN PLUME OF SOUTHERN PLAINS HEAT DOME. 
 
EARLY THIS MORNING A SUBSTANTIAL RESERVOIR OF INSTABILITY EXISTS 
FROM THE CENTRAL PLAINS INTO THE LOWER MS VALLEY. SEVERAL POCKETS OF 
STRONG/SEVERE THUNDERSTORMS HAVE EVOLVED WITHIN A WARM ADVECTION 
CORRIDOR ACROSS SOUTHERN KS/NORTHERN OK AND AHEAD OF THE LARGER 
TROUGH OVER WI/IL. THIS ACTIVITY IS NOT CURRENTLY EXPECTED TO GROW 
UPSCALE PRIOR TO DAYBREAK. AS A RESULT, EXTREME BUOYANCY IS EXPECTED 
TO DEVELOP ACROSS THE MID-SOUTH INTO SOUTHERN IN WITHIN 
SOUTHWESTERLY LOW-LEVEL FLOW WHERE SURFACE TEMPERATURES ARE EXPECTED 
TO WARM RAPIDLY AHEAD OF SYNOPTIC FRONT. THE AFOREMENTIONED 
MID-LEVEL JET WILL DIG INTO THIS REGION DURING THE DAY ENHANCING 
SHEAR PROFILES AND VENTING ALOFT FOR ROBUST UPDRAFTS. 
 
CURRENT THINKING IS STRONGER FORCED REGIONS OF IN/LOWER MI WILL 
EASILY CONVECT BY EARLY AFTERNOON AND A POSSIBLE SQUALL LINE COULD 
EVOLVE AFTER 18Z WHERE MID-LEVEL BACKING AND HEIGHT FALLS ARE MORE 
EVIDENT. HOWEVER, MORE INTENSE THUNDERSTORMS ARE EXPECTED TO DEVELOP 
TOWARD 21Z FARTHER SOUTH ACROSS WESTERN KY, THEN INTO WESTERN TN BY 
LATE AFTERNOON. FORECAST SOUNDINGS ACROSS THE MDT RISK REGION ARE 
QUITE IMPRESSIVE REGARDING BUOYANCY WITH SBCAPE ON THE ORDER OF 
5000-6000 J/KG AND SFC-6KM SHEAR APPROACHING 60KT. ENVIRONMENTAL 
PARAMETERS STRONGLY FAVOR SUPERCELLS ACROSS THIS REGION AND VERY 
LARGE HAIL COULD ACCOMPANY THIS ACTIVITY. IN ADDITION, TORNADO 
THREAT WILL BE GREATEST WITH THESE DISCRETE STORMS THAT WILL 
PROPAGATE STRONGLY SOUTHEAST AROUND 25KT. IF THIS REGION IS NOT 
CONVECTIVELY CONTAMINATED PRIOR TO MID AFTERNOON THERE IS SOME 
CONCERN THAT A HIGHER TORNADO THREAT MAY BE EMBEDDED IN THIS REGION. 
WILL MONITOR MESOSCALE DETAILS AND ADDRESS THIS CONCERN IN LATER 
OUTLOOKS. OTHERWISE, MULTIPLE SEVERE THUNDERSTORM CLUSTERS SHOULD 
EVOLVE ACROSS THE MID-SOUTH DURING THE EVENING WHICH SHOULD 
PROPAGATE ACROSS NORTHERN MS/AL WITH AN ATTENDANT THREAT FOR LARGE 
HAIL/DAMAGING WINDS.
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WeatherUnderground / Re: WU - Let us know your issues
« Last post by bagocina on Today at 01:19:14 AM »
Woohoo, IBRATISL590 Curently Conditions updating now correctly too! Thanks guys!
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Weather Conditions Discussion / Re: Spring/Summer '18
« Last post by Bunty on Today at 12:58:35 AM »
WOW, Tulsa had even higher humidity to deal with.  Meanwhile, Oklahoma heatwave buckles Cimarron Turnpike pavement, lane closed on Stillwater spur:  http://www.stwnewspress.com/news/local_news/heat-buckles-cimarron-turnpike-pavement-lane-closed-on-stillwater-spur/article_1dd1fb57-0ca0-58ef-a6df-3992cef7991c.html
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Weather Photography / Sunset Mammatus
« Last post by kaymann on Today at 12:19:15 AM »


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Severe Weather / Re: 7/19/18 Midwest Tornado Outbreak
« Last post by WeatherMonger on Yesterday at 11:12:48 PM »
Decent rain falling, but no thunder or lightning.

#mothernaturehatesmeheretoo  :lol:

Heavy rain now, and mustered up a good strike somewhere nearby. Clap of thunder had some rattle with it.

Im getting LOTS of thunder and lightning. I think its just YOU that mother nature dont like lol.


Not quite, definitely getting some good fireworks here. Thunder and lightning happened after the front passed.

:lol: :D
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WeatherUnderground / Re: Calendar Takes me to Russia.
« Last post by Bushman on Yesterday at 11:09:37 PM »
Yet more Russian influence on the US!!  LOL  Or fake news.
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