Station ID: KOAK Lat: 37.71 Long: 122.23 GFS Model Run: 12Z 20APR 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 04/20 12Z 53 47 145 8 0.00 0.00 553 563 7.2 -17.2 1011.9 5 000FEW000 000FEW000 CLR **** **** 15.0 0.0 0.744 10.0 3 04/20 15Z 55 46 145 7 0.00 0.00 552 563 6.1 -16.7 1012.6 34 096FEW119 123SCT141 FEW 56 52 15.0 0.0 0.857 9.5 6 04/20 18Z 61 43 149 9 0.00 0.00 553 563 7.2 -17.0 1012.7 67 062BKN106 121SCT148 337FEW348 61 52 15.0 0.0 0.892 10.5 9 04/20 21Z 58 50 157 13 0.02 0.00 553 563 7.2 -17.1 1012.0 83 -RA 035BKN110 119BKN186 350SCT397 66 58 10.2 0.0 1.089 11.3 12 04/21 00Z 57 51 192 9 0.07 0.00 553 562 7.0 -17.2 1010.7 91 -RA 029BKN111 119BKN179 341SCT379 66 56 13.2 0.0 1.101 9.3 15 04/21 03Z 54 51 267 3 0.30 0.00 550 560 5.7 -17.7 1012.0 100 RA 000OVC118 118OVC200 353SCT397 57 54 15.0 0.0 0.961 8.2 18 04/21 06Z 54 50 208 5 0.01 0.00 548 559 3.8 -19.0 1012.7 100 RA 015OVC114 125OVC185 353FEW397 57 53 15.2 0.0 0.873 7.8 21 04/21 09Z 52 50 149 4 0.06 0.01 547 557 2.9 -17.9 1012.6 100 -RA 006OVC116 117OVC189 CLR 54 53 14.6 0.0 0.915 7.3 24 04/21 12Z 52 50 147 5 0.03 0.01 545 554 3.1 -20.3 1011.5 91 -RA 005BKN114 123BKN194 CLR 54 52 13.8 0.0 0.795 7.4 27 04/21 15Z 53 50 156 6 0.07 0.07 542 552 3.3 -24.0 1011.9 96 -TSRA 038BKN117 117SCT135 CLR 53 52 5.9 0.0 0.792 7.7 30 04/21 18Z 58 49 202 12 0.09 0.09 541 551 2.7 -25.1 1011.9 98 -TSRA 042BKN108 118BKN184 CLR 58 52 7.6 0.0 0.765 7.9 33 04/21 21Z 53 47 251 10 0.11 0.06 540 551 1.5 -25.0 1012.6 100 -TSRA 025OVC112 117OVC233 233OVC252 58 52 12.4 0.0 0.749 6.4 36 04/22 00Z 56 45 250 12 0.01 0.01 539 549 1.7 -26.2 1012.3 94 -TSRA 024BKN114 120BKN219 233BKN251 58 52 15.0 0.0 0.607 6.7 39 04/22 03Z 51 46 259 11 0.02 0.02 537 549 1.4 -27.8 1014.4 7 -TSRA 040FEW047 153FEW177 CLR 56 51 14.2 0.0 0.580 5.6 42 04/22 06Z 51 44 247 9 0.02 0.02 537 551 0.9 -28.1 1016.9 39 -TSRA 032FEW038 172SCT204 CLR 56 50 15.1 0.0 0.492 5.1 45 04/22 09Z 50 45 275 9 0.04 0.04 537 552 0.6 -26.5 1019.0 48 -TSRA 033SCT049 158FEW179 CLR 51 50 9.5 0.0 0.617 4.9 48 04/22 12Z 49 44 235 6 0.03 0.03 538 555 0.4 -23.6 1020.5 37 -TSRA 037SCT056 146FEW168 CLR 51 49 13.5 0.0 0.567 4.7 51 04/22 15Z 51 46 164 6 0.01 0.01 541 559 0.5 -19.1 1022.1 73 -RA 051BKN093 CLR CLR 52 48 14.1 0.0 0.560 4.8 54 04/22 18Z 54 46 224 5 0.02 0.02 544 563 1.1 -18.6 1023.4 79 -TSRA 036BKN080 CLR 296FEW327 55 48 14.6 0.0 0.586 5.4 57 04/22 21Z 59 46 270 9 0.01 0.01 546 565 1.5 -18.5 1023.2 100 -RA 029BKN074 CLR 288BKN321 59 54 15.0 0.0 0.549 6.7 60 04/23 00Z 58 46 273 11 0.00 0.00 547 565 2.5 -18.5 1022.4 96 -RA 029SCT074 CLR 289BKN330 59 54 15.0 0.0 0.514 6.8 63 04/23 03Z 52 45 280 8 0.00 0.00 547 566 3.0 -17.8 1022.2 0 CLR CLR CLR 58 52 15.0 0.0 0.508 6.1 66 04/23 06Z 50 45 291 5 0.00 0.00 547 566 2.9 -16.9 1022.3 3 CLR CLR 326FEW360 58 50 15.0 0.0 0.552 6.3 69 04/23 09Z 49 46 299 5 0.00 0.00 548 565 2.6 -16.0 1021.4 21 FEW CLR 295FEW343 50 49 15.0 0.0 0.539 6.2 72 04/23 12Z 48 45 328 4 0.00 0.00 549 566 2.5 -16.0 1020.2 20 085FEW093 CLR 288FEW329 50 48 15.0 0.0 0.557 6.1 75 04/23 15Z 50 45 12 3 0.00 0.00 550 566 2.7 -16.3 1020.1 12 FEW CLR 304FEW328 51 47 15.0 0.0 0.564 6.5 78 04/23 18Z 59 45 325 4 0.00 0.00 551 567 3.2 -16.4 1019.0 17 CLR CLR 327FEW354 59 47 15.0 0.0 0.570 7.6 81 04/23 21Z 63 46 299 10 0.00 0.00 553 567 4.2 -16.7 1016.8 40 058FEW061 CLR 340SCT373 63 59 15.0 0.0 0.602 10.4 84 04/24 00Z 59 46 288 11 0.00 0.00 554 566 5.8 -16.9 1015.0 69 059FEW063 CLR 310BKN383 64 57 15.0 0.0 0.631 10.6 87 04/24 03Z 54 46 279 7 0.00 0.00 553 566 6.8 -17.0 1014.9 99 CLR CLR 266OVC383 59 54 15.0 0.0 0.582 10.7 90 04/24 06Z 52 46 237 4 0.00 0.00 553 565 7.3 -17.3 1014.9 100 CLR CLR 261OVC381 59 52 15.0 0.0 0.554 10.3 93 04/24 09Z 51 46 203 4 0.00 0.00 552 564 7.4 -17.8 1013.9 100 CLR CLR 261OVC364 52 51 15.0 0.0 0.571 10.7 96 04/24 12Z 50 46 223 4 0.00 0.00 552 563 7.2 -18.3 1013.4 100 014FEW019 FEW 259OVC360 52 50 15.0 0.0 0.619 8.8 99 04/24 15Z 53 46 228 5 0.00 0.00 551 563 7.3 -18.5 1013.8 100 013BKN021 226SCT239 246OVC342 53 50 15.0 0.0 0.657 7.0 102 04/24 18Z 58 47 249 6 0.00 0.00 552 563 7.5 -18.6 1013.8 100 014BKN022 223SCT239 242OVC347 58 50 15.0 0.0 0.700 7.3 105 04/24 21Z 59 47 270 10 0.00 0.00 552 563 7.7 -18.3 1012.9 100 CLR 228FEW239 239OVC348 59 58 15.0 0.0 0.660 8.3 108 04/25 00Z 57 47 274 11 0.00 0.00 553 563 8.1 -18.3 1012.1 73 CLR 229FEW239 240BKN337 59 57 15.0 0.0 0.619 7.4 111 04/25 03Z 52 46 264 10 0.00 0.00 552 563 8.4 -18.3 1012.2 11 020FEW024 CLR 242FEW274 57 52 15.0 0.0 0.592 6.3 114 04/25 06Z 52 46 260 8 0.00 0.00 552 562 7.9 -18.4 1012.6 44 017SCT026 229FEW238 239SCT254 57 52 15.0 0.0 0.649 5.7 117 04/25 09Z 52 45 249 8 0.00 0.00 550 561 7.5 -18.8 1012.3 97 010BKN030 219BKN238 238SCT252 52 52 15.0 0.0 0.697 5.5 120 04/25 12Z 52 45 241 6 0.00 0.00 549 559 7.2 -19.7 1011.8 98 007BKN032 218BKN236 237FEW251 53 52 15.0 0.0 0.740 5.5 123 04/25 15Z 53 45 244 7 0.00 0.00 548 558 6.2 -20.6 1012.3 100 005OVC037 218BKN234 250BKN271 53 52 15.0 0.0 0.785 5.4 126 04/25 18Z 55 45 250 8 0.00 0.00 547 558 4.6 -20.7 1013.0 100 009OVC044 193BKN215 241BKN290 55 52 15.0 0.0 0.829 5.9 129 04/25 21Z 58 45 248 9 0.00 0.00 547 558 2.7 -20.5 1012.6 100 039BKN063 180OVC210 237OVC306 58 55 15.0 0.0 0.841 7.0 132 04/26 00Z 56 45 258 11 0.00 0.00 548 559 4.1 -19.7 1012.1 100 034BKN058 181BKN209 237BKN306 58 55 15.0 0.0 0.773 6.7 135 04/26 03Z 54 44 246 8 0.00 0.00 549 560 3.5 -19.5 1012.8 100 033BKN048 FEW 273OVC304 56 54 15.0 0.0 0.676 6.4 138 04/26 06Z 52 44 233 6 0.00 0.00 549 560 4.4 -19.3 1013.3 76 032BKN047 CLR 274BKN304 56 52 15.0 0.0 0.721 6.6 141 04/26 09Z 52 45 205 6 0.00 0.00 549 560 2.7 -19.7 1013.5 52 027SCT044 CLR 288FEW303 53 51 15.0 0.0 0.611 6.5 144 04/26 12Z 52 46 209 5 0.01 0.00 548 560 1.7 -19.9 1013.8 75 -RA 014BKN048 CLR 288FEW303 53 51 15.0 0.0 0.589 6.1 147 04/26 15Z 52 46 163 4 0.00 0.00 548 560 1.7 -20.3 1014.7 100 -RA 000OVC053 CLR 240FEW273 52 51 15.0 0.0 0.572 6.4 150 04/26 18Z 56 45 221 4 0.00 0.00 548 561 1.8 -20.4 1015.0 100 -RA 009OVC053 210FEW237 237FEW269 56 51 15.0 0.0 0.560 6.6 153 04/26 21Z 59 46 259 10 0.00 0.00 549 561 2.2 -20.2 1015.0 100 035BKN052 207SCT237 239SCT283 59 56 15.0 0.0 0.564 7.8 156 04/27 00Z 58 45 276 11 0.00 0.00 549 561 5.0 -19.9 1014.4 90 034BKN051 204BKN237 238SCT273 59 56 15.0 0.0 0.503 7.5 159 04/27 03Z 52 45 276 9 0.00 0.00 549 561 5.6 -19.3 1014.9 6 037FEW040 218FEW230 CLR 58 52 15.0 0.0 0.451 6.1 162 04/27 06Z 50 44 289 6 0.00 0.00 549 562 6.1 -19.3 1015.6 3 CLR 218FEW230 CLR 58 50 15.0 0.0 0.414 5.5 165 04/27 09Z 49 43 289 5 0.00 0.00 548 561 6.1 -19.4 1015.8 0 CLR CLR CLR 50 49 15.0 0.0 0.408 5.1 168 04/27 12Z 48 43 281 3 0.00 0.00 548 561 5.9 -19.5 1015.8 12 CLR CLR 316FEW339 50 48 15.0 0.0 0.427 4.8