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Post by yypc on Aug 21, 2023 17:01:00 GMT -6
You dont normally see dewpoints like this outside of the persian gulf/red sea area. Pretty impressive.
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Post by REB on Aug 21, 2023 17:40:12 GMT -6
Disgusting……
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Post by Snowman99 on Aug 21, 2023 18:18:52 GMT -6
RADAR has showers moving west/sw along the MO river in franklin county into stl county. What the hell is happening? lol
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Post by mosue56 on Aug 21, 2023 18:26:07 GMT -6
Whoever said putrid earlier was right on! It’s also a steam sauna!
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Post by tedrick65 on Aug 21, 2023 18:47:58 GMT -6
Has the heat index calculation evolved or changed like wind chill over the years?
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Post by BRTNWXMAN on Aug 21, 2023 18:54:41 GMT -6
Has the heat index calculation evolved or changed like wind chill over the years? Seems like they tweaked it about 10 years ago...could be wrong |
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Post by ajd446 on Aug 21, 2023 19:00:19 GMT -6
Snowman99 I think the radar cant even figure out this kind of sauna in our region. I think that may be the washed out front beginning to retreat causing some echos.
But who knows this may be bout the most hot humid combo I have ever witnessed in my 30 years on earth lol.
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Post by tedrick65 on Aug 21, 2023 19:12:36 GMT -6
Snowman99 I think the radar cant even figure out this kind of sauna in our region. I think that may be the washed out front beginning to retreat causing some echos. But who knows this may be bout the most hot humid combo I have ever witnessed in my 30 years on earth lol. A good chunk of the summer of 1980 was like this but not as extreme as the last couple days. A heat wave hit right about the same time as now in 1983, but things were kind of droughty. Late August early September 1984, there was a brief but intense heat wave with the Southwest flow. 1988 was hot all summer but droughty. 2012 was completely different. At 58 I'm having a tough time remembering more than 24 to 48 hours of this level of humidity with heat. |
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Post by bdgwx on Aug 21, 2023 19:48:32 GMT -6
Also I'm pretty sure 5-minute obs showed a couple 119s yesterday at KSTL. It did. However, the 5 minute METAR observations have an annoying rounding problem. The web page takes the raw value in F and converts it to C then rounds and stores that value to the nearest integer behind the scenes. Whenever you have "US Units" selected it takes the integer C value and converts it F again. This means the 97/81 value could have actually only been 96/80 yielding HI=116. Note that the hourly reports at 51 minutes contain the real values and do not suffer from this conversion bug. Yes, this is maddening. Anyway, here is the list of mappings from 70 to 115 F. Actual => Reported
70 => 70
71 => 72
72 => 72
73 => 73
74 => 73
75 => 75
76 => 75
77 => 77
78 => 79
79 => 79
80 => 81
81 => 81
82 => 82
83 => 82
84 => 84
85 => 84
86 => 86
87 => 88
88 => 88
89 => 90
90 => 90
91 => 91
92 => 91
93 => 93
94 => 93
95 => 95
96 => 97
97 => 97
98 => 99
99 => 99
100 => 100
101 => 100
102 => 102
103 => 102
104 => 104
105 => 106
106 => 106
107 => 108
108 => 108
109 => 109
110 => 109
111 => 111
112 => 111
113 => 113
114 => 115
115 => 115
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Post by tedrick65 on Aug 21, 2023 20:08:19 GMT -6
9:05pm
Temp: 82.4°
DP 81.1°
HI "only" 94.7°
FWIW...walking the pups wasn't nearly as bad as last night.
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Post by bdgwx on Aug 21, 2023 20:24:24 GMT -6
From the 0Z soundings this evening at 500mb we have TOP at 603, ILX at 602, and SGF at 602.
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Post by amstilost on Aug 21, 2023 20:29:47 GMT -6
I was praising them clouds today while mowing. Spent about 3.5hrs on the 0-turn. I really wasn't cutting much grass as much as I was re-dispersing all the brown clumps/trails of grass from last mowing on Friday. I do not recall having to mow on a 4-5 day schedule for this many weeks in August before. But, like others have mentioned on here, my memory is also nothing like it use be. I remember the Super El Nino in CA the winter of 82-83 but only because there were SO MANY storms coming in off the Pacific with lots of thunderstorms with them.
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Post by tedrick65 on Aug 21, 2023 22:10:52 GMT -6
11:08 pm
Temp: 80.6°
DP: 80.3°
HI: 89.1 °
Icky
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Post by Snowstorm920 on Aug 22, 2023 6:49:21 GMT -6
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Post by amstilost on Aug 22, 2023 7:03:40 GMT -6
Noooooooooo, the sun is ALREADY poking through the fog/clouds this morn.
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Post by ajd446 on Aug 22, 2023 7:48:37 GMT -6
Im not sure I have ever seen such a large exessive heat warning map in my life.
All of mo, il, iowa, and arkansas are in a warning, plus large chunks of the states surrounding
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Post by yypc on Aug 22, 2023 7:56:47 GMT -6
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Post by Snowman99 on Aug 22, 2023 8:03:48 GMT -6
I saw where there were 9 locations with >=600 heights yesterday in the midwest..never been more than 2 east of the plains before |
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Post by bdgwx on Aug 22, 2023 8:07:53 GMT -6
NWS Des Moines is saying the dewpoint readings in Denison and Atlantic are not correct.
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Post by yypc on Aug 22, 2023 8:16:28 GMT -6
NWS Des Moines is saying the dewpoint readings in Denison and Atlantic are not correct. Makes sense, bad sensors I guess. |
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Post by bdgwx on Aug 22, 2023 8:18:17 GMT -6
The Aug. 5, 2022 sounding from ILX is saying 605 DM for 500 mb heights. That has to be incorrect since Davenport is only saying 590 DM for the same day. |
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Post by Snowman99 on Aug 22, 2023 8:19:13 GMT -6
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Post by bdgwx on Aug 22, 2023 8:24:00 GMT -6
500 mb height records are even more limited, but according to the SPC sounding climatology which is generally only back to 1995 or so the highest values are 600 at SGF, 605 at ILX, and 608 at TOP. And now the 608 DM value the SPC was showing for TOP has been removed. I wonder if they are going through the observations and removing the bad ones. Anyway, the SPC is now saying 600 DM on 8/16/2003 was the highest since 1955 at TOP. This means the current ridge has produced 500 mb heights that are likely higher than any other observed at TOP, ILX, and SGF. |
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Post by ajd446 on Aug 22, 2023 10:13:16 GMT -6
Now we are Persian Gulf Territory, dew point currently 88 in Washington MO with temp of 88, heat index 121.
WOW!!!!
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Post by cardsnweather on Aug 22, 2023 10:30:50 GMT -6
A 91* DP would set a record.
NOAA shows 86 as the highest in Missouri right now. Washington sitting at 91/86/121. Unreal.
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Post by Labrat-O'Fallon IL on Aug 22, 2023 11:45:23 GMT -6
Woke up at 0430 to use the bathroom, fog was heavy and the outside of the windows looked like cooler doors. Whoever had the picture of that lady saying moist, that is exactly how it feels outside. Gross.
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Post by Snowman99 on Aug 22, 2023 11:59:20 GMT -6
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Post by bdgwx on Aug 22, 2023 13:00:05 GMT -6
Official observation at the airport is 99/78 at 2pm. That is a HI of 117 F.
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Post by Jeffmw on Aug 22, 2023 13:00:51 GMT -6
So how do things look after this stretch of heat in long range models?
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Post by yypc on Aug 22, 2023 13:02:14 GMT -6
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