Station ID: KOAK Lat: 37.71 Long: 122.23 GFS Model Run: 12Z 21MAY 2026 Clouds Bases and Tops are now agl HR Valid 2m Tmp 2m Dpt 10m Dir 10m Spd TPrcp CPrcp 1000-500 500mb 850mb 500mb MSLP TCC PRS WX Low Middle High Max Min Sfc Snowfall PWAT 925mb Deg F Deg F deg kt in. in. Thk GPH Tmp Tmp mb % TEXT Clouds Clouds Clouds Tmp Tmp Vis in in Tmp 0 05/21 12Z 52 48 305 4 0.00 0.00 567 577 16.8 -9.7 1011.7 6 000FEW000 CLR 000FEW000 **** **** 13.2 0.0 0.566 21.4 3 05/21 15Z 57 49 276 2 0.00 0.00 568 578 16.7 -9.8 1012.4 30 CLR CLR 321SCT387 58 51 13.3 0.0 0.577 20.9 6 05/21 18Z 67 50 295 6 0.00 0.00 568 578 16.7 -10.2 1012.1 29 CLR CLR 362SCT414 67 51 13.3 0.0 0.594 20.8 9 05/21 21Z 69 49 292 8 0.00 0.00 569 578 16.8 -10.5 1011.4 38 CLR CLR 417SCT449 70 67 13.4 0.0 0.572 21.6 12 05/22 00Z 62 49 294 10 0.00 0.00 569 578 17.5 -10.5 1010.4 31 CLR CLR 418SCT457 71 62 13.3 0.0 0.536 22.0 15 05/22 03Z 56 49 291 5 0.00 0.00 568 577 17.6 -10.9 1010.3 3 CLR CLR 431FEW455 62 56 13.4 0.0 0.533 21.4 18 05/22 06Z 52 49 272 3 0.00 0.00 568 577 17.8 -11.3 1010.7 1 CLR CLR 431FEW455 62 52 15.0 0.0 0.520 20.3 21 05/22 09Z 51 48 266 3 0.00 0.00 567 575 18.0 -11.0 1009.5 0 CLR CLR CLR 52 51 14.7 0.0 0.525 19.0 24 05/22 12Z 50 48 284 2 0.00 0.00 566 574 17.8 -10.8 1009.4 0 CLR CLR CLR 52 50 14.7 0.0 0.534 18.0 27 05/22 15Z 55 49 256 2 0.00 0.00 566 574 17.0 -11.6 1010.2 4 CLR CLR 412FEW447 55 50 15.0 0.0 0.536 18.0 30 05/22 18Z 65 50 299 5 0.00 0.00 566 575 16.6 -11.6 1009.9 3 CLR CLR 425FEW451 65 50 15.0 0.0 0.525 17.6 33 05/22 21Z 67 50 299 10 0.00 0.00 567 575 16.9 -11.1 1009.3 0 CLR CLR FEW 69 64 15.0 0.0 0.499 19.4 36 05/23 00Z 63 50 299 11 0.00 0.00 567 575 17.2 -10.8 1008.7 0 CLR CLR CLR 69 61 15.0 0.0 0.488 19.1 39 05/23 03Z 56 50 298 7 0.00 0.00 567 575 16.9 -10.2 1009.7 1 CLR CLR FEW 63 56 15.0 0.0 0.496 18.5 42 05/23 06Z 53 50 307 3 0.00 0.00 566 575 16.9 -9.9 1010.8 2 CLR CLR 444FEW456 63 53 13.4 0.0 0.535 16.8 45 05/23 09Z 52 50 312 2 0.00 0.00 566 575 16.7 -10.1 1010.6 1 FEW CLR CLR 53 52 15.0 0.0 0.535 14.8 48 05/23 12Z 51 49 223 1 0.00 0.00 565 574 16.3 -10.4 1011.4 0 CLR CLR 443FEW444 53 51 15.1 0.0 0.535 13.4 51 05/23 15Z 56 50 200 1 0.00 0.00 564 575 15.7 -10.3 1012.9 0 CLR CLR 444FEW456 56 51 15.0 0.0 0.521 13.2 54 05/23 18Z 65 50 292 3 0.00 0.00 565 576 15.5 -10.5 1013.2 1 CLR CLR 444FEW456 65 51 15.0 0.0 0.506 12.1 57 05/23 21Z 67 50 290 9 0.00 0.00 565 577 15.7 -10.4 1013.2 2 CLR CLR 444FEW456 68 65 15.0 0.0 0.553 14.3 60 05/24 00Z 65 49 287 10 0.00 0.00 566 577 15.8 -10.2 1012.9 3 CLR CLR 438FEW450 68 63 15.0 0.0 0.516 15.8 63 05/24 03Z 57 50 297 7 0.00 0.00 565 577 16.6 -10.3 1013.9 0 CLR CLR CLR 65 57 15.0 0.0 0.507 15.6 66 05/24 06Z 53 50 300 3 0.00 0.00 565 578 16.1 -10.6 1015.6 0 CLR CLR CLR 65 53 13.5 0.0 0.493 13.3 69 05/24 09Z 52 49 274 2 0.00 0.00 564 577 15.6 -11.1 1015.3 3 CLR CLR 340FEW365 53 52 15.1 0.0 0.446 12.5 72 05/24 12Z 50 47 187 0 0.00 0.00 563 576 15.1 -11.5 1015.6 4 CLR CLR 342FEW368 53 50 15.1 0.0 0.425 11.5 75 05/24 15Z 55 47 264 1 0.00 0.00 563 577 14.8 -11.7 1016.5 30 CLR CLR 342SCT367 55 50 15.0 0.0 0.456 10.3 78 05/24 18Z 62 47 281 6 0.00 0.00 563 577 14.8 -11.5 1016.5 22 CLR CLR 345FEW370 62 50 15.0 0.0 0.491 10.3 81 05/24 21Z 64 48 283 11 0.00 0.00 564 577 15.3 -11.6 1016.0 7 CLR CLR 371FEW399 64 62 15.0 0.0 0.511 11.3 84 05/25 00Z 60 47 284 11 0.00 0.00 565 577 15.4 -11.6 1015.0 7 CLR CLR 376FEW402 64 60 15.0 0.0 0.458 13.1 87 05/25 03Z 55 48 286 8 0.00 0.00 564 577 15.2 -11.7 1015.4 6 CLR CLR 384FEW407 60 55 15.0 0.0 0.438 12.8 90 05/25 06Z 52 48 278 3 0.00 0.00 564 577 15.2 -12.2 1015.8 6 CLR CLR 385FEW407 60 52 15.0 0.0 0.512 12.9 93 05/25 09Z 51 47 265 3 0.00 0.00 564 576 15.3 -12.1 1014.6 4 CLR CLR 395FEW406 52 51 15.0 0.0 0.501 11.6 96 05/25 12Z 50 48 260 3 0.00 0.00 563 575 14.9 -12.3 1014.4 7 010FEW019 CLR 377FEW392 52 50 15.1 0.0 0.479 9.1 99 05/25 15Z 54 48 222 3 0.00 0.00 562 575 13.9 -12.6 1014.8 40 010SCT022 CLR 366FEW377 54 50 15.0 0.0 0.496 10.8 102 05/25 18Z 60 47 283 9 0.00 0.00 563 575 13.6 -12.1 1014.6 34 012SCT022 CLR 355FEW370 60 50 15.0 0.0 0.505 9.0 105 05/25 21Z 62 48 279 11 0.00 0.00 564 575 14.0 -11.3 1013.6 16 CLR CLR 341FEW372 62 60 15.0 0.0 0.487 10.9 108 05/26 00Z 58 48 270 12 0.00 0.00 564 575 13.4 -9.7 1012.9 54 CLR CLR 304BKN359 62 58 15.0 0.0 0.509 10.7 111 05/26 03Z 54 48 264 7 0.00 0.00 565 576 13.0 -9.3 1012.7 98 CLR CLR 335BKN427 58 54 15.0 0.0 0.462 12.2 114 05/26 06Z 51 48 256 7 0.00 0.00 565 576 11.8 -8.1 1013.3 68 CLR CLR 342BKN426 58 51 15.0 0.0 0.462 12.5 117 05/26 09Z 52 50 259 6 0.00 0.00 564 575 9.8 -8.4 1012.8 100 009FEW011 CLR 367OVC436 52 51 15.0 0.0 0.841 10.4 120 05/26 12Z 53 50 262 9 0.00 0.00 564 574 9.7 -8.8 1012.2 100 000SCT017 CLR 384BKN444 53 51 15.1 0.0 0.552 9.2 123 05/26 15Z 54 46 263 8 0.00 0.00 563 574 8.9 -8.8 1013.0 52 008BKN018 CLR 431FEW451 55 52 15.0 0.0 0.447 7.3 126 05/26 18Z 59 48 255 8 0.00 0.00 564 575 9.2 -8.8 1012.9 32 008SCT019 CLR 374FEW402 59 52 15.0 0.0 0.484 8.2 129 05/26 21Z 64 47 259 7 0.00 0.00 564 574 10.1 -9.3 1011.9 89 CLR CLR 334BKN420 64 59 15.0 0.0 0.518 11.0 132 05/27 00Z 61 47 264 8 0.00 0.00 565 574 10.6 -9.0 1010.9 73 CLR CLR 350BKN419 64 59 15.0 0.0 0.596 12.6 135 05/27 03Z 55 48 222 4 0.00 0.00 565 574 12.7 -9.9 1010.7 92 CLR CLR 383BKN428 61 55 15.0 0.0 0.540 14.2 138 05/27 06Z 52 48 204 5 0.00 0.00 565 574 13.7 -9.0 1010.4 67 CLR CLR 380BKN430 61 52 15.0 0.0 0.572 16.2 141 05/27 09Z 51 48 171 4 0.00 0.00 566 574 14.0 -8.8 1010.0 17 CLR CLR 401FEW428 52 51 14.9 0.0 0.562 17.3 144 05/27 12Z 50 47 162 2 0.00 0.00 566 574 14.3 -7.9 1009.8 20 CLR CLR 406FEW433 52 50 15.0 0.0 0.553 18.0 147 05/27 15Z 57 48 266 2 0.00 0.00 567 576 14.9 -7.6 1011.0 24 CLR CLR 409FEW445 57 50 15.0 0.0 0.505 17.5 150 05/27 18Z 66 49 291 5 0.00 0.00 569 578 15.7 -8.1 1010.9 18 CLR CLR 415FEW445 67 50 15.0 0.0 0.479 16.2 153 05/27 21Z 71 48 293 9 0.00 0.00 571 580 15.6 -7.9 1010.1 3 CLR CLR 403FEW421 70 66 15.2 0.0 0.466 19.7 156 05/28 00Z 67 48 282 7 0.00 0.00 573 581 17.4 -7.9 1009.5 2 CLR CLR 413FEW429 71 65 15.0 0.0 0.471 20.8 159 05/28 03Z 59 48 233 4 0.00 0.00 574 582 19.2 -7.9 1009.8 3 CLR CLR 435FEW454 67 59 15.0 0.0 0.465 21.7 162 05/28 06Z 53 47 191 4 0.00 0.00 574 583 19.8 -8.3 1010.4 2 CLR CLR 435FEW454 67 53 15.0 0.0 0.484 22.6 165 05/28 09Z 53 46 174 4 0.00 0.00 574 583 19.8 -8.4 1010.1 0 CLR CLR CLR 54 53 15.0 0.0 0.487 23.8 168 05/28 12Z 54 45 139 1 0.00 0.00 574 583 18.9 -8.4 1010.7 0 CLR CLR CLR 54 53 15.0 0.0 0.529 22.4