Download exact MRMS products from the NOAA public S3 archive.
How it works: choose products, set local study dates and time centers, discover actual S3 objects, then download manageable ZIP chunks. The downloader never invents filenames when the bucket can be asked directly.
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Select productsDaily QPE, quality, lightning, more
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Set date/time12Z, Eastern midnight, custom
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Discover filesResolve real keys and sizes
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ZIP in chunks1, 3, 5, or 7 local days
1. Select products
0 product streams selected
2. Date, time, and ZIP settings
Two endpoints per local study day.
12:00 UTC each label date.
00:00 local at the end of each study day.
One local endpoint per study date.
Eastern midnight: the local date is treated as a precipitation day. For August 10, for example, the endpoint is 00:00 Eastern on August 11, converted to UTC with daylight-saving rules. If you literally mean fixed EST, check the UTC−5 override above. A DST-transition day is flagged because a fixed 24-hour rolling product cannot equal a 23- or 25-hour civil day.
RadarOnly_QPE_Since12Z: this field resets at 12Z. It is useful because you asked for it, but it is not equivalent to RadarOnly_QPE_24H. At Eastern midnight it represents only the accumulation since that day's 12Z.
Ready.
0requested targets
0resolved S3 files
0 Bcompressed total
Browser note: “Run ZIP queue” may trigger a one-time “allow multiple downloads” permission. If mobile Chrome objects to humanity having nice things, use the individual ZIP buttons. If browser CORS blocks discovery entirely, use the Python discovery fallback; it performs S3 listing and ZIP creation itself.