12Z model run on time, 12 balloon reports flagged
Model status
NWS is producing the 12Z model run on schedule. Forecast model output should reach forecasters, apps and websites at the usual times.
“12Z” is the run’s start time in UTC. NWS runs its main models four times a day — 00Z, 06Z, 12Z and 18Z — and each run begins by digesting a global snapshot of current conditions taken at that hour.
124 weather balloon launches were available to feed this run (11 in Alaska, 25 in Canada, 59 in Lower 48, 13 in Mexico, 7 in Caribbean, 9 in Pacific). “Stations available for ingest” means balloon soundings that arrived in time to be folded into the model’s starting picture of the atmosphere. Twice a day, sites across North America release balloons that measure temperature, humidity, pressure and wind all the way up. More stations reporting means a better-anchored starting point.
Balloon reports 12Z NAM RAOB RECAP...
Twice a day, NWS and partner agencies release weather balloons that carry a radiosonde — a small instrument package that radios back temperature, humidity, pressure and wind as it climbs. Those soundings are one of the main ingredients in a forecast model’s starting conditions. This section is the roll call of stations that had a problem for the 12Z run of the NAM.
12 stations were flagged: 6 sent no usable sounding at all, 3 reported a numeric status code, 1 had a balloon burst early, 1 was missing part of the transmission, 1 had bad data removed by quality control. A handful of gaps is normal and is not by itself a sign of a forecast problem — the models are built to work with an incomplete picture.
| Station | Where | What happened | As printed |
|---|---|---|---|
| GYM 76256 | Empalme, Mexico · Mexico | Quality control removed part of this sounding before it reached the models: temps/moisture 752-742mb...wet bulb effect. The rest of the sounding was still used. | Purged temps/moisture 752-742mb...wet bulb effect |
| ANN 70398 | Annette Island, AK | No weather balloon data from this station reached the model for this cycle — either no launch happened or the data did not arrive in time. | No report |
| SYA 70414 | Shemya AFB, AK | No weather balloon data from this station reached the model for this cycle — either no launch happened or the data did not arrive in time. | No report |
| LZK 72340 | Little Rock/Adams Field, AR | No weather balloon data from this station reached the model for this cycle — either no launch happened or the data did not arrive in time. | No report |
| LWX 72403 | Washington/Dulles Intl, VA | No weather balloon data from this station reached the model for this cycle — either no launch happened or the data did not arrive in time. | No report |
| DDC 72451 | Dodge City/Municipal, KS | No weather balloon data from this station reached the model for this cycle — either no launch happened or the data did not arrive in time. | No report |
| OAX 72558 | Valley, NE | No weather balloon data from this station reached the model for this cycle — either no launch happened or the data did not arrive in time. | No report |
| SNP 70308 | St. Paul Islands, AK | The station reported status code 10159. NWS does not publish a public legend for these codes, so we will not guess at what it means — it signals some problem with the launch or the data. unrecognised status code 10159 | 10159 |
| TWC 72274 | Tucson, AZ | The station reported status code 10159. NWS does not publish a public legend for these codes, so we will not guess at what it means — it signals some problem with the launch or the data. unrecognised status code 10159 | 10159 |
| NKX 72293 | San Diego/Miramar, NAS, CA | Ground equipment failure — the station’s tracking/receiving equipment was down, so no usable sounding was produced. | 10142...Ground equipment failure |
| MZL 76654 | Manzanillo, Col · Mexico | The balloon burst early. It stopped reporting at 667 mb, so this sounding only covers the lower part of the atmosphere — forecasters and models got no data above roughly 3.4 km (11,000 ft). (667 mb ≈ 3.4 km (11,000 ft)) | Short to 667mb |
| BDA 78016 | L F Wade Intl · Bermuda | The station reported, but part of the sounding transmission was missing — specifically TTBB, the "significant levels" section that carries the extra detail between the standard pressure levels. | Missing Part TTBB |
Show the original message
Exactly as NWS transmitted it. Everything above is our plain-English reading of this text — if the two ever disagree, this is the authoritative version.
000
NOUS42 KWNO 021334
ADMSDM
SENIOR DUTY METEOROLOGIST NWS ADMINISTRATIVE MESSAGE
NWS CENTRAL OPERATIONS COLLEGE PARK MD
1334Z MON NOV 02 2026
12Z NWS model production started on time with 11 Alaskan...
25 Canadian...59 CONUS...13 Mexican...7 Caribbean...and 9
Pacific stations available for ingest.
12Z NAM RAOB RECAP...
76256/GYM - Purged temps/moisture 752-742mb...wet bulb
effect
70398/ANN - No report
70414/SYA - No report
72340/LZK - No report
72403/LWX - No report
72451/DDC - No report
72558/OAX - No report
70308/SNP - 10159
72274/TWC - 10159
72293/NKX - 10142...Ground equipment failure
76654/MZL - Short to 667mb
78016/BDA - Missing Part TTBB
Kempisty/SDM/NCO