| Station | Observation |
| Alturas | KAAT |
| Arcata | KACV |
| Avalon, Catalina Island | KAVX |
| Auburn | KAUN |
| Bakersfield | KBFL |
| Beale AFB | KBAB |
| Bishop | KBIH |
| Blue Canyon | KBLU |
| Byron | KC83 |
| Concord | KCCR |
| Crescent City | KCEC |
| Davis University AP | KEDU |
| Davis Yolo County AP | KDWA |
| Fairfield Travis AFB | KSUU |
| Fort Ord | KOAR |
| Fresno | KFAT |
| Half Moon Bay | KHAF |
| Hanford | KHJO |
| Hayward | KHWD |
| Hollister | KCVH |
| Inyokern | KIYK |
| Klamath Falls, OR | KLMT |
| Lemoore NAS | KNLC |
| Lincoln | KLHM |
| Livermore | KLVK |
| Long Beach | KLGB |
| Los Angeles | KLAX |
| Mammoth Lakes | KMMH |
| Medford, OR | KMFR |
| Merced | KMCE |
| Modesto | KMOD |
| Montague-Siskiyou | KSIY |
| Monterey | KMRY |
| Morgan Hill South County AP | KE16 |
| Mount Shasta | KMHS |
| Mount Wilson | KMWS |
| Mountain View Moffett Field | KNUQ |
| Napa | KAPC |
| Needles | KEED |
| Oakland | KOAK |
| Oceanside | KOKB |
| Oroville | KOVE |
| Oxnard | KOXR |
| Palo Alto | KPAO |
| Palm Springs | KPSP |
| Paso Robles | KPRB |
| Petaluma | KO69 |
| Porterville | KPTV |
| Point Mugu | KNTD |
| Ramona | KRNM |
| Red Bluff | KRBL |
| Redding | KRDD |
| Reno, NV | KRNO |
| Riverside | KRIV |
| Sacramento Executive | KSAC |
| Sacramento International | KSMF |
| Sacramento Mather | KMHR |
| Sacramento McClellan | KMCC |
| Salinas | KSNS |
| San Clemente Island | KNUC |
| San Diego | KSAN |
| San Francisco | KSFO |
| San Carlos | KSQL |
| San Jose | KSJC |
| San Jose Reid-Hillview | KRHV |
| San Luis Obispo | KSBP |
| Santa Barbara | KSBA |
| Santa Maria | KSMX |
| Santa Rosa | KSTS |
| South Lake Tahoe | KTVL |
| Stockton | KSCK |
| Tracy | KTCY |
| Truckee | KTRK |
| Torrance | KTOA |
| Twentynine Palms | KNXP |
| Ukiah | KUKI |
| Vacaville | KVCB |
| Visalia | KVIS |
| Watsonville | KWVI |