Experimental parallel QMD feed for NBM v5. It mirrors the operational CONUS QMD product while surfacing the richer probability and quantile families already present in the public v5 parallel bucket.
The upstream bucket is noaa-nbm-para-pds. GribStream keeps the parallel feed under dedicated dataset codes so you can compare it to the operational NBM family instead of swapping existing archives underneath current workflows.
NBM v5 is more than a parameter refresh. NOAA's July 15, 2025 change notice highlights one especially visible change for API users: most hourly guidance extends from 36 hours to 48 hours, which matters if you use NBM as an hourly time series rather than just a daily summary.
NOAA also revised the blend itself, including more quantile-mapped processing for key temperature, moisture, and precipitation guidance, a percentile-picking approach for deterministic wind and gusts, higher-resolution ECMWF and Canadian inputs, and ECAIFS as a new input for several core fields. See PNS 25-45, winter configuration notes, and NBM Versions.
That matters even more in the QMD family. The CONUS v5 package ties the quantile and exceedance products to updated QM weighting for QPF and PoP, adds WPC MMEBC as a QPF input, and expands the calibrated snow and percentile-style guidance that many users query as thresholds rather than raw deterministic values.
Detail
Archive window: Last 5 days
Source: NOAA NBM parallel public bucket on AWS Open Data.
Coverage: CONUS.
Update cadence: Hourly cycles.
Lead time: 1-276 hours where published, with most hourly guidance extending through hour 48 in NBM v5.
Resolution: ~2.5 km.
Status: Public parallel feed currently serving NBM v5.
Experimental: This parallel dataset is experimental. Fields, cadence, and retention can change.
Accumulated precipitation represents the total water-equivalent amount of rain and snow during the output period. It is a primary field for hydrologic impacts and event totals.
Units: kg/m^2.
Use with the model time interval to interpret totals and compare to gauges.
Apparent temperature combines air temperature, humidity, and wind to estimate how hot or cold it feels to humans. It is useful for heat and cold stress assessments.
Units: K.
Level
Info
Horizon
Introduced
Selector
2 m above ground
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":""}
2 m above ground
0% level
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"0% level"}
2 m above ground
10% level
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"10% level"}
2 m above ground
100% level
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"100% level"}
2 m above ground
15% level
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"15% level"}
2 m above ground
20% level
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"20% level"}
2 m above ground
25% level
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"25% level"}
2 m above ground
30% level
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"30% level"}
2 m above ground
35% level
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"35% level"}
2 m above ground
40% level
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"40% level"}
2 m above ground
45% level
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"45% level"}
2 m above ground
5% level
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"5% level"}
2 m above ground
50% level
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"50% level"}
2 m above ground
55% level
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"55% level"}
2 m above ground
60% level
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"60% level"}
2 m above ground
65% level
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"65% level"}
2 m above ground
70% level
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"70% level"}
2 m above ground
75% level
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"75% level"}
2 m above ground
80% level
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"80% level"}
2 m above ground
85% level
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"85% level"}
2 m above ground
90% level
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"90% level"}
2 m above ground
95% level
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"95% level"}
2 m above ground
prob <244.261
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"prob <244.261"}
2 m above ground
prob <249.817
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"prob <249.817"}
2 m above ground
prob <255.372
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"prob <255.372"}
2 m above ground
prob >305.372
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"prob >305.372"}
2 m above ground
prob >308.14
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"prob >308.14"}
2 m above ground
prob >310.928
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"prob >310.928"}
2 m above ground
prob >313.706
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"prob >313.706"}
2 m above ground
prob >316.483
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"prob >316.483"}
2 m above ground
prob >322.039
1h-276h
2026-04-16
{"name":"APTMP","level":"2 m above ground","info":"prob >322.039"}
Joint fire weather probability expresses the chance that combined fire-weather criteria are met during the valid period. It is intended for elevated wildfire-spread and rapid-growth risk assessment.
Units: %.
Interpret this as a probability field rather than a categorical flag.