00Z model run on time, 17 balloon reports flagged
Model status
NWS is producing the 00Z model run on schedule. Forecast model output should reach forecasters, apps and websites at the usual times.
“00Z” 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 (10 in Alaska, 26 in Canada, 59 in Lower 48, 13 in Mexico, 6 in Caribbean, 10 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 for the GFS.
Balloon reports UPDATED 00Z GFS 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 00Z run of the GFS.
17 stations were flagged: 7 sent no usable sounding at all, 10 reported a numeric status code, 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 |
|---|---|---|---|
| SYA 70414 | Shemya AFB, AK | No weather balloon data from this station reached the NAM run. The GFS run did get a report from it. | No report for NAM..in for GFS |
| JAX 72206 | Jacksonville/Intl, FL | 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 for NAM/GFS |
| MAF 72265 | Midland/Midland Reg. Airterm, TX | Ground equipment failure — the receiving, tracking, processing, or other ground system failed. | No report for NAM..10142 for GFS |
| VEF 72388 | Las Vegas, NV | 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 for NAM/GFS |
| ALY 72518 | Albany County Airport, NY | No weather balloon data from this station reached the NAM run. The GFS run did get a report from it. | No report for NAM..in for GFS |
| GRB 72645 | Green Bay/A.-Straubel, WI | 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 for NAM/GFS |
| OTX 72786 | Spokane, WA | 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 for NAM/GFS |
| OTZ 70133 | Kotzebue, Ralph Wien, AK | Any reason not listed above — other or unspecified reason. “Unavailable” may appear as free text, but is not the formal definition. | 10159 |
| BET 70219 | Bethel/Bethel Airport, AK | Any reason not listed above — other or unspecified reason. “Unavailable” may appear as free text, but is not the formal definition. | 10159 |
| SNP 70308 | St. Paul Islands, AK | Any reason not listed above — other or unspecified reason. “Unavailable” may appear as free text, but is not the formal definition. | 10159 |
| AKN 70326 | King Salmon, AK | Any reason not listed above — other or unspecified reason. “Unavailable” may appear as free text, but is not the formal definition. | 10159 |
| TWC 72274 | Tucson, AZ | Any reason not listed above — other or unspecified reason. “Unavailable” may appear as free text, but is not the formal definition. | 10159 |
| LZK 72340 | Little Rock/Adams Field, AR | Ground equipment failure — the receiving, tracking, processing, or other ground system failed. | 10142 |
| TOP 72456 | Topeka/Municipal, KS | Any reason not listed above — other or unspecified reason. “Unavailable” may appear as free text, but is not the formal definition. | 10159 |
| GCM 78384 | Owen Roberts Airport Grand Cay · Cayman Islands | Ground equipment failure — the receiving, tracking, processing, or other ground system failed. | 10142 |
| MAJ 91376 | Majuro/Marshall Island Intl · Marshall Islands | Observation delayed — the observation was delayed. The GFS run still got a usable report from this station. | 10143 for NAM..full report in for GFS |
| ROR 91408 | Koror/Caroline Is · Palau | Quality control removed part of this sounding before it reached the models: wind sfc to 1000 mb..too fast. The rest of the sounding was still used. | Purged wind sfc to 1000 mb..too fast |
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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 070301 ADMSDM SENIOR DUTY METEOROLOGIST NWS ADMINISTRATIVE MESSAGE NWS CENTRAL OPERATIONS COLLEGE PARK MD 0300Z FRI AUG 07 2026 The 00Z NWS model production suite continues to run on time with 10 Alaskan..26 Canadian..59 CONUS..13 Mexican..6 Caribbean..and 10 Pacific stations available for ingest into the 00Z GFS. UPDATED 00Z GFS RAOB RECAP... 70414/SYA - No report for NAM..in for GFS 72206/JAX - No report for NAM/GFS 72265/MAF - No report for NAM..10142 for GFS 72388/VEF - No report for NAM/GFS 72518/ALY - No report for NAM..in for GFS 72645/GRB - No report for NAM/GFS 72786/OTX - No report for NAM/GFS 70133/OTZ - 10159 70219/BET - 10159 70308/SNP - 10159 70326/AKN - 10159 72274/TWC - 10159 72340/LZK - 10142 72456/TOP - 10159 78384/GCM - 10142 91376/MAJ - 10143 for NAM..full report in for GFS 91408/ROR - Purged wind sfc to 1000 mb..too fast Churchill/SDM/NCO