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18 UTC GFS Model (Northern Hemisphere)

Go to: 00 UTC 06 UTC 12 UTC

Updated through the
384 hour forecast at
23:51 UTC 08/22/2026
(06:51 PM CDT, Sat 08/22/2026)

Surface	00h	12h	1d	36h	2d	60h	3d	84h	4d
Loop	–	108h	5d	132h	6d	156h	7d	180h	8d
	–	204h	9d	228h	10d	252h	11d	276h	12d
	–	300h	13d	324h	14d	348h	15d	372h	16d

850 hPa	00h	12h	1d	36h	2d	60h	3d	84h	4d
Loop	–	108h	5d	132h	6d	156h	7d	180h	8d
	–	204h	9d	228h	10d	252h	11d	276h	12d
	–	300h	13d	324h	14d	348h	15d	372h	16d

700 hPa	00h	12h	1d	36h	2d	60h	3d	84h	4d
Loop	–	108h	5d	132h	6d	156h	7d	180h	8d
	–	204h	9d	228h	10d	252h	11d	276h	12d
	–	300h	13d	324h	14d	348h	15d	372h	16d

500 hPa	00h	12h	1d	36h	2d	60h	3d	84h	4d
Loop	–	108h	5d	132h	6d	156h	7d	180h	8d
	–	204h	9d	228h	10d	252h	11d	276h	12d
	–	300h	13d	324h	14d	348h	15d	372h	16d

300 hPa	00h	12h	1d	36h	2d	60h	3d	84h	4d
Loop	–	108h	5d	132h	6d	156h	7d	180h	8d
	–	204h	9d	228h	10d	252h	11d	276h	12d
	–	300h	13d	324h	14d	348h	15d	372h	16d

250 hPa	00h	12h	1d	36h	2d	60h	3d	84h	4d
Loop	–	108h	5d	132h	6d	156h	7d	180h	8d
	–	204h	9d	228h	10d	252h	11d	276h	12d
	–	300h	13d	324h	14d	348h	15d	372h	16d

200 hPa	00h	12h	1d	36h	2d	60h	3d	84h	4d
Loop	–	108h	5d	132h	6d	156h	7d	180h	8d
	–	204h	9d	228h	10d	252h	11d	276h	12d
	–	300h	13d	324h	14d	348h	15d	372h	16d

RH/LI	00h	12h	1d	36h	2d	60h	3d	84h	4d
Loop	–	108h	5d	132h	6d	156h	7d	180h	8d
	–	204h	9d	228h	10d	252h	11d	276h	12d
	–	300h	13d	324h	14d	348h	15d	372h	16d

Total Column Ozone	00h	12h	1d	36h	2d	60h	3d	84h	4d
Loop	–	108h	5d	132h	6d	156h	7d	180h	8d
	–	204h	9d	228h	10d	252h	11d	276h	12d
	–	300h	13d	324h	14d	348h	15d	372h	16d

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