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.
123 weather balloon launches were available to feed this run (9 in Alaska, 26 in Canada, 61 in Lower 48, 13 in Mexico, 5 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 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, 9 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 model for this cycle — either no launch happened or the data did not arrive in time. | No report |
| 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 |
| LZK 72340 | Little Rock/Adams Field, AR | No weather balloon data from this station reached the NAM run. The GFS run did get a report from it. | No report for the NAM...Full report in for the 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 |
| 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 |
| 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 |
| PNI 91348 | Ponape/Caroline Is · Micronesia | No weather balloon data from this station reached the NAM run. The GFS run did get a report from it. | No report for the NAM...Full report in for the 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 |
| 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...Ground equipment failure |
| POS 78970 | Piarco Intl, Trinidad · Trinidad and Tobago | Any reason not listed above — other or unspecified reason. “Unavailable” may appear as free text, but is not the formal definition. | 10159 |
| KWA 91366 | Kwajalein/Bucholz Aaf, Marshal · Marshall Islands | Any reason not listed above — other or unspecified reason. “Unavailable” may appear as free text, but is not the formal definition. | 10159 |
| MID 76644 | Aeropuerto Intl Merida, Mexico · Mexico | Quality control removed part of this sounding before it reached the models: temps/moisture 765-763mb...wet bulb effect. The rest of the sounding was still used. | Purged temps/moisture 765-763mb...wet bulb effect |
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 190307
ADMSDM
SENIOR DUTY METEOROLOGIST NWS ADMINISTRATIVE MESSAGE
NWS CENTRAL OPERATIONS COLLEGE PARK MD
0307Z WED AUG 19 2026
00Z NWS model production is running on time with 9
Alaskan...26 Canadian...61 CONUS...13 Mexican...5
Caribbean...and 9 Pacific stations available for ingest.
UPDATED 00Z GFS RAOB RECAP...
70414/SYA - No report
72206/JAX - No report
72340/LZK - No report for the NAM...Full report in for the
GFS
72388/VEF - No report
72645/GRB - No report
72786/OTX - No report
91348/PNI - No report for the NAM...Full report in for the
GFS
70133/OTZ - 10159
70219/BET - 10159
70308/SNP - 10159
70326/AKN - 10159
72274/TWC - 10159
72456/TOP - 10159
78384/GCM - 10142...Ground equipment failure
78970/POS - 10159
91366/KWA - 10159
76644/MID - Purged temps/moisture 765-763mb...wet bulb
effect
Kempisty/SDM/NCO