Station ID: KOAK Lat: 37.71 Long: 122.23 GFS Model Run: 12Z 20OCT 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 10/20 12Z 52 48 123 4 0.00 0.00 555 564 9.4 -16.2 1011.8 97 CLR 000FEW000 000BKN000 **** **** 15.0 0.0 0.685 8.6 3 10/20 15Z 53 48 100 3 0.00 0.00 554 565 9.7 -17.2 1012.4 59 CLR 213FEW227 265BKN314 53 52 15.0 0.0 0.701 9.0 6 10/20 18Z 63 48 9 2 0.00 0.00 555 566 10.6 -17.4 1012.8 43 CLR 221FEW233 266SCT314 63 52 15.0 0.0 0.670 10.2 9 10/20 21Z 67 47 277 5 0.00 0.00 557 566 10.9 -17.6 1011.0 100 CLR CLR 264OVC321 68 63 15.0 0.0 0.758 13.8 12 10/21 00Z 68 46 302 6 0.00 0.00 557 566 11.8 -17.4 1010.0 100 CLR 201FEW233 254OVC324 69 63 15.0 0.0 0.811 15.4 15 10/21 03Z 61 47 295 1 0.00 0.00 557 566 12.2 -18.0 1010.6 100 114FEW121 200OVC234 241OVC329 68 61 14.8 0.0 0.826 15.5 18 10/21 06Z 59 50 145 3 0.01 0.01 557 566 12.3 -17.7 1010.6 100 -RA 110FEW120 199OVC234 240OVC329 68 58 15.0 0.0 0.891 16.1 21 10/21 09Z 59 49 110 2 0.00 0.00 557 565 12.6 -18.3 1010.1 100 110FEW120 185BKN237 240OVC327 59 58 15.0 0.0 0.886 15.2 24 10/21 12Z 57 49 164 3 0.00 0.00 555 564 11.3 -19.6 1010.5 92 103FEW115 185BKN235 243BKN324 59 57 15.0 0.0 0.876 14.6 27 10/21 15Z 59 49 196 1 0.00 0.00 554 564 10.9 -18.7 1011.2 100 082BKN114 177BKN237 244OVC323 59 58 15.0 0.0 0.873 13.4 30 10/21 18Z 64 50 303 4 0.00 0.00 554 564 10.0 -18.5 1012.0 100 086BKN113 172BKN237 242OVC327 64 57 15.0 0.0 0.909 12.3 33 10/21 21Z 64 50 302 6 0.00 0.00 554 563 10.2 -18.8 1010.9 100 086FEW098 165OVC239 239OVC338 64 63 15.0 0.0 0.939 13.7 36 10/22 00Z 63 50 298 4 0.00 0.00 554 563 9.4 -18.1 1010.4 100 082SCT110 158BKN239 239OVC336 66 63 15.0 0.0 0.952 14.5 39 10/22 03Z 60 51 297 4 0.00 0.00 553 563 8.9 -18.3 1011.0 100 062BKN116 123OVC239 239OVC327 63 60 15.0 0.0 0.998 13.9 42 10/22 06Z 59 51 256 3 0.00 0.00 553 562 8.3 -18.1 1010.8 100 060BKN118 121OVC239 239OVC321 63 59 15.0 0.0 1.026 13.1 45 10/22 09Z 58 52 285 2 0.00 0.00 552 561 7.8 -18.5 1010.6 100 033BKN113 140BKN212 240SCT292 59 58 15.0 0.0 0.969 12.4 48 10/22 12Z 57 51 281 3 0.03 0.00 551 560 7.3 -19.3 1010.9 96 -RA 031BKN114 133BKN194 252SCT301 59 56 14.2 0.0 1.029 11.5 51 10/22 15Z 56 52 246 2 0.02 0.00 550 560 6.8 -19.5 1011.7 100 -RA 026OVC112 120BKN238 248OVC297 57 56 8.6 0.0 1.064 10.0 54 10/22 18Z 57 52 39 0 0.04 0.00 550 562 6.0 -19.3 1013.5 100 -RA 014OVC115 119BKN234 246BKN291 57 56 15.0 0.0 1.066 9.5 57 10/22 21Z 57 53 168 2 0.01 0.00 551 562 6.2 -18.2 1013.5 100 000OVC117 145SCT199 257BKN309 57 57 15.0 0.0 1.052 9.9 60 10/23 00Z 60 54 238 4 0.00 0.00 552 564 6.5 -17.8 1013.5 100 014BKN100 174BKN225 257BKN309 61 57 15.0 0.0 1.036 9.8 63 10/23 03Z 57 54 271 4 0.00 0.00 553 566 7.2 -17.2 1015.1 96 020SCT036 159BKN239 CLR 60 57 15.0 0.0 1.070 9.7 66 10/23 06Z 57 53 256 5 0.00 0.00 553 566 7.8 -17.3 1016.0 81 018SCT034 151BKN237 CLR 60 56 15.0 0.0 0.937 8.8 69 10/23 09Z 56 50 253 3 0.00 0.00 553 566 8.6 -18.1 1016.4 100 000OVC033 201FEW213 282FEW304 57 56 15.0 0.0 0.894 8.1 72 10/23 12Z 56 48 306 1 0.00 0.00 553 567 8.9 -18.0 1016.9 87 007BKN031 196FEW230 259FEW283 57 55 15.0 0.0 0.804 8.2 75 10/23 15Z 54 48 243 1 0.00 0.00 555 569 8.8 -16.3 1017.6 3 022FEW024 CLR CLR 55 53 15.0 0.0 0.652 10.7 78 10/23 18Z 61 49 316 4 0.00 0.00 557 572 8.4 -14.7 1018.5 1 023FEW024 CLR CLR 62 53 15.0 0.0 0.612 10.4 81 10/23 21Z 66 51 301 6 0.00 0.00 560 574 8.4 -13.7 1016.6 0 CLR CLR CLR 66 61 15.0 0.0 0.572 12.6 84 10/24 00Z 63 52 287 7 0.00 0.00 562 575 8.8 -12.8 1015.6 0 CLR CLR CLR 66 61 15.0 0.0 0.587 14.3 87 10/24 03Z 57 52 287 5 0.00 0.00 562 576 10.0 -12.8 1016.8 0 CLR CLR CLR 63 56 15.0 0.0 0.516 14.4 90 10/24 06Z 55 51 243 1 0.00 0.00 563 577 11.1 -12.2 1017.1 0 CLR CLR CLR 63 55 15.0 0.0 0.428 14.8 93 10/24 09Z 55 50 132 2 0.00 0.00 563 577 11.8 -11.7 1016.7 0 CLR CLR CLR 55 54 15.0 0.0 0.408 14.3 96 10/24 12Z 54 49 68 2 0.00 0.00 563 577 11.6 -11.7 1016.8 0 CLR CLR CLR 56 54 15.0 0.0 0.320 13.4 99 10/24 15Z 53 40 44 2 0.00 0.00 563 578 11.8 -12.0 1017.3 0 CLR CLR CLR 54 53 15.0 0.0 0.251 13.5 102 10/24 18Z 64 36 33 2 0.00 0.00 564 579 11.6 -12.1 1017.8 0 CLR CLR CLR 64 53 15.0 0.0 0.277 13.6 105 10/24 21Z 70 38 329 3 0.00 0.00 565 579 11.7 -12.3 1016.1 0 CLR CLR CLR 71 65 15.0 0.0 0.324 15.0 108 10/25 00Z 70 41 340 1 0.00 0.00 566 579 11.6 -12.3 1015.0 0 CLR CLR CLR 72 64 15.0 0.0 0.335 16.7 111 10/25 03Z 62 42 301 2 0.00 0.00 566 579 11.9 -12.1 1016.2 0 CLR CLR CLR 71 61 15.0 0.0 0.376 16.5 114 10/25 06Z 60 41 22 2 0.00 0.00 566 580 12.5 -12.0 1017.1 0 CLR CLR CLR 71 59 15.0 0.0 0.400 16.6 117 10/25 09Z 59 41 86 2 0.00 0.00 565 580 12.5 -12.0 1017.0 0 CLR CLR CLR 60 58 15.0 0.0 0.413 16.6 120 10/25 12Z 57 40 72 2 0.00 0.00 565 580 12.3 -12.0 1017.3 0 CLR CLR CLR 60 57 15.0 0.0 0.421 16.7 123 10/25 15Z 57 39 65 3 0.00 0.00 565 580 12.5 -12.1 1018.2 0 CLR CLR CLR 57 56 15.0 0.0 0.422 16.6 126 10/25 18Z 69 42 9 1 0.00 0.00 565 581 12.8 -12.1 1018.9 0 CLR CLR CLR 69 56 15.0 0.0 0.394 16.9 129 10/25 21Z 74 42 288 4 0.00 0.00 566 581 13.5 -12.0 1017.0 0 CLR CLR CLR 74 69 15.0 0.0 0.353 17.9 132 10/26 00Z 73 41 301 5 0.00 0.00 566 581 13.6 -12.1 1016.3 0 CLR CLR CLR 75 69 15.0 0.0 0.337 18.8 135 10/26 03Z 65 39 321 3 0.00 0.00 567 582 14.0 -12.2 1017.5 0 CLR CLR CLR 74 65 15.0 0.0 0.323 18.8 138 10/26 06Z 62 39 2 1 0.00 0.00 567 582 14.1 -12.2 1018.2 2 CLR CLR 407FEW419 74 62 15.0 0.0 0.322 18.6 141 10/26 09Z 60 39 60 1 0.00 0.00 567 582 14.0 -12.2 1018.3 5 CLR CLR 404FEW418 62 60 15.0 0.0 0.321 18.3 144 10/26 12Z 59 38 70 2 0.00 0.00 566 582 14.1 -12.3 1018.4 12 CLR CLR 397FEW423 62 59 15.0 0.0 0.315 18.3 147 10/26 15Z 58 37 76 2 0.00 0.00 566 582 14.3 -12.7 1018.6 7 CLR CLR 395FEW419 59 57 15.0 0.0 0.310 18.1 150 10/26 18Z 70 41 332 1 0.00 0.00 567 583 14.3 -12.4 1019.0 6 CLR CLR 394FEW413 70 57 15.0 0.0 0.312 18.1 153 10/26 21Z 73 41 285 5 0.00 0.00 568 582 14.5 -12.4 1016.8 58 CLR CLR 313BKN345 74 70 15.0 0.0 0.300 18.8 156 10/27 00Z 73 39 300 5 0.00 0.00 568 581 15.1 -12.1 1015.7 62 CLR CLR 327BKN386 75 70 15.0 0.0 0.286 19.6 159 10/27 03Z 64 41 309 4 0.00 0.00 568 582 15.1 -12.1 1016.3 100 CLR CLR 298OVC399 73 63 15.0 0.0 0.290 19.8 162 10/27 06Z 61 41 278 1 0.00 0.00 568 582 15.2 -12.4 1016.5 100 CLR CLR 292OVC377 73 61 15.0 0.0 0.298 19.3 165 10/27 09Z 60 40 96 2 0.00 0.00 568 581 15.3 -12.5 1015.6 100 CLR CLR 322OVC435 61 60 15.0 0.0 0.293 19.3 168 10/27 12Z 60 38 68 2 0.00 0.00 567 580 14.9 -12.6 1015.2 100 CLR CLR 299OVC425 61 60 15.0 0.0 0.305 19.0