Station ID: KOAK Lat: 37.71 Long: 122.23 GFS Model Run: 0Z 17APR 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 04/17 00Z 67 27 352 11 0.00 0.00 555 568 6.9 -15.6 1016.0 18 CLR CLR 000FEW000 **** **** 15.0 0.0 0.146 13.4 3 04/17 03Z 58 37 322 9 0.00 0.00 554 568 7.0 -15.3 1016.9 19 CLR CLR 364FEW412 67 58 15.0 0.0 0.226 11.6 6 04/17 06Z 54 31 351 7 0.00 0.00 555 569 7.8 -15.3 1017.2 19 CLR CLR 351FEW401 67 54 15.0 0.0 0.206 11.3 9 04/17 09Z 52 26 1 6 0.00 0.00 555 569 8.8 -15.7 1016.7 8 CLR CLR 353FEW372 54 52 15.0 0.0 0.142 11.2 12 04/17 12Z 48 21 34 4 0.00 0.00 555 569 8.2 -15.9 1017.3 6 CLR CLR 348FEW373 54 48 15.0 0.0 0.138 9.4 15 04/17 15Z 50 21 44 3 0.00 0.00 555 570 7.5 -15.8 1018.9 6 CLR CLR 356FEW387 51 46 15.0 0.0 0.138 8.2 18 04/17 18Z 61 25 8 7 0.00 0.00 555 571 7.7 -15.3 1018.8 5 CLR CLR 359FEW383 61 46 15.0 0.0 0.163 8.7 21 04/17 21Z 66 30 310 8 0.00 0.00 557 572 7.2 -14.8 1017.6 7 CLR CLR 337FEW359 66 61 15.0 0.0 0.208 12.0 24 04/18 00Z 61 40 289 10 0.00 0.00 557 571 7.8 -14.5 1016.9 38 CLR CLR 302SCT394 67 60 15.0 0.0 0.288 12.7 27 04/18 03Z 54 41 295 5 0.00 0.00 557 572 9.6 -14.7 1017.1 100 CLR 232FEW242 261OVC376 61 54 15.0 0.0 0.299 13.1 30 04/18 06Z 52 42 245 2 0.00 0.00 557 572 9.7 -15.2 1017.7 100 CLR 218FEW242 251OVC385 61 52 15.0 0.0 0.328 12.7 33 04/18 09Z 51 42 190 2 0.00 0.00 557 571 9.5 -15.1 1017.4 100 CLR 202BKN242 252OVC339 52 51 15.0 0.0 0.357 12.5 36 04/18 12Z 49 42 135 3 0.00 0.00 557 570 9.5 -15.4 1016.3 96 CLR 203BKN241 262BKN357 52 49 15.0 0.0 0.383 13.0 39 04/18 15Z 52 39 93 2 0.00 0.00 557 571 9.7 -15.5 1016.5 100 CLR 183SCT242 256OVC398 53 49 15.0 0.0 0.398 12.6 42 04/18 18Z 63 39 300 1 0.00 0.00 557 571 9.8 -15.5 1016.0 100 CLR 175BKN242 249OVC397 63 49 15.0 0.0 0.401 12.1 45 04/18 21Z 64 38 272 4 0.00 0.00 558 571 9.9 -15.7 1014.8 100 CLR 196OVC241 241OVC391 66 63 15.0 0.0 0.383 14.0 48 04/19 00Z 66 41 296 5 0.00 0.00 558 569 9.9 -15.9 1013.2 100 CLR 210BKN241 241OVC397 68 63 15.0 0.0 0.411 14.7 51 04/19 03Z 57 44 298 6 0.00 0.00 558 569 10.4 -16.3 1012.9 100 CLR 222BKN241 241OVC402 66 57 15.0 0.0 0.456 15.2 54 04/19 06Z 54 45 302 3 0.00 0.00 557 568 10.1 -16.7 1013.4 100 CLR 211BKN241 241OVC400 66 54 15.0 0.0 0.536 14.1 57 04/19 09Z 54 44 283 1 0.00 0.00 557 567 10.2 -16.7 1012.3 100 CLR 196OVC240 244OVC380 54 54 15.0 0.0 0.486 13.6 60 04/19 12Z 53 45 283 2 0.00 0.00 555 565 9.9 -18.4 1011.6 100 CLR 196OVC240 243OVC371 54 53 15.0 0.0 0.407 12.7 63 04/19 15Z 55 45 273 1 0.00 0.00 554 564 9.4 -17.2 1012.1 100 CLR 178OVC240 240BKN353 56 53 15.0 0.0 0.445 11.8 66 04/19 18Z 63 43 242 1 0.00 0.00 555 565 9.4 -17.2 1012.0 99 CLR 166OVC238 246BKN334 63 53 15.0 0.0 0.441 11.0 69 04/19 21Z 65 43 277 10 0.00 0.00 555 565 8.0 -16.8 1011.5 99 CLR 168BKN206 257BKN386 66 63 15.0 0.0 0.557 12.3 72 04/20 00Z 62 41 272 9 0.00 0.00 555 564 9.2 -16.5 1010.8 100 CLR 169BKN207 247BKN387 66 61 15.0 0.0 0.469 11.3 75 04/20 03Z 56 43 304 5 0.00 0.00 555 564 9.7 -16.8 1011.1 100 CLR 216SCT234 243OVC388 62 55 15.0 0.0 0.438 12.4 78 04/20 06Z 53 43 48 1 0.00 0.00 554 564 9.5 -16.5 1012.1 100 CLR 212FEW230 250OVC379 62 53 15.0 0.0 0.438 11.1 81 04/20 09Z 53 40 139 6 0.00 0.00 554 564 8.3 -16.4 1012.3 100 CLR 221FEW240 240OVC366 54 53 15.0 0.0 0.453 10.0 84 04/20 12Z 51 43 131 7 0.00 0.00 552 563 7.7 -16.0 1012.8 94 CLR 213SCT231 239BKN341 54 51 15.0 0.0 0.622 9.5 87 04/20 15Z 54 42 129 8 0.00 0.00 552 563 7.4 -16.2 1013.3 38 087SCT119 129FEW143 248FEW274 54 51 15.0 0.0 0.753 11.2 90 04/20 18Z 64 40 153 5 0.00 0.00 553 564 7.1 -16.0 1013.6 58 083BKN117 133FEW147 249FEW275 63 51 15.0 0.0 0.778 11.4 93 04/20 21Z 66 42 292 8 0.00 0.00 555 564 8.5 -15.3 1011.5 74 075BKN110 119SCT137 404FEW427 69 63 15.0 0.0 0.792 13.7 96 04/21 00Z 63 46 220 13 0.00 0.00 555 564 9.4 -15.7 1010.6 87 077BKN115 119BKN139 399FEW421 69 62 15.0 0.0 0.795 13.4 99 04/21 03Z 60 48 187 10 0.00 0.00 554 563 9.0 -16.8 1011.2 99 082OVC119 120FEW127 349FEW397 63 59 15.0 0.0 0.966 11.4 102 04/21 06Z 57 49 170 7 0.00 0.00 553 562 7.0 -18.0 1011.7 90 076BKN119 126SCT169 337SCT397 63 57 15.0 0.0 1.051 10.5 105 04/21 09Z 55 51 202 4 0.14 0.01 551 560 6.1 -17.7 1010.3 99 -RA 010OVC111 132BKN228 CLR 58 55 3.7 0.0 1.093 9.7 108 04/21 12Z 54 52 119 11 0.54 0.00 549 558 5.4 -18.2 1010.5 100 RA 006OVC114 124BKN231 237SCT248 58 53 3.5 0.0 1.016 7.9 111 04/21 15Z 53 49 121 10 0.08 0.00 545 555 4.1 -20.3 1012.0 99 -RA 012BKN106 150BKN220 236BKN272 54 52 15.1 0.0 0.770 8.4 114 04/21 18Z 58 51 162 8 0.03 0.03 544 554 3.4 -22.5 1011.5 98 -TSRA 018BKN089 154BKN222 236BKN277 58 52 6.8 0.0 0.739 8.4 117 04/21 21Z 61 47 199 13 0.09 0.09 543 552 3.3 -24.6 1011.7 94 -TSRA 041SCT065 177BKN230 234BKN260 61 59 13.3 0.0 0.738 9.5 120 04/22 00Z 58 48 198 15 0.03 0.03 542 551 2.9 -25.0 1011.2 97 -TSRA 051BKN094 145BKN232 233BKN255 61 57 10.9 0.0 0.667 8.5 123 04/22 03Z 53 48 208 11 0.01 0.01 541 551 2.8 -26.3 1012.0 54 -RA CLR 136BKN233 233FEW243 58 53 12.2 0.0 0.603 6.9 126 04/22 06Z 51 47 194 8 0.02 0.02 539 551 2.0 -26.8 1014.5 50 -TSRA 098FEW107 130SCT220 233FEW243 58 51 14.8 0.0 0.641 6.2 129 04/22 09Z 50 47 154 7 0.04 0.04 539 551 1.5 -26.4 1014.8 100 -TSRA 076SCT115 117OVC214 CLR 52 50 14.2 0.0 0.701 6.6 132 04/22 12Z 50 46 126 7 0.01 0.01 539 551 1.5 -26.2 1014.5 100 -TSRA 071SCT115 117OVC217 CLR 52 50 13.1 0.0 0.735 6.6 135 04/22 15Z 50 48 125 9 0.11 0.02 540 552 0.6 -25.7 1015.3 100 -TSRA 013BKN116 117OVC233 233BKN243 51 49 4.7 0.0 0.764 5.9 138 04/22 18Z 50 47 150 8 0.12 0.00 540 553 1.0 -24.9 1016.2 100 -RA 008OVC117 117OVC234 234BKN249 52 48 10.7 0.0 0.719 5.5 141 04/22 21Z 52 46 188 3 0.06 0.01 541 554 1.7 -24.4 1016.4 100 -RA 013BKN103 122OVC234 234BKN252 53 50 15.0 0.0 0.739 5.8 144 04/23 00Z 54 45 300 2 0.00 0.00 543 556 2.5 -23.7 1015.4 97 -RA 020BKN084 139BKN234 235SCT253 55 50 14.9 0.0 0.654 6.7 147 04/23 03Z 54 47 284 5 0.00 0.00 545 558 3.2 -20.2 1015.7 92 037BKN054 CLR 252SCT321 55 53 15.0 0.0 0.712 7.4 150 04/23 06Z 51 46 279 6 0.00 0.00 547 561 3.6 -18.1 1016.9 81 036BKN052 179FEW232 245BKN322 55 50 15.0 0.0 0.648 7.8 153 04/23 09Z 50 45 264 6 0.00 0.00 550 563 4.6 -17.1 1016.1 5 CLR 146FEW158 338FEW349 51 50 15.0 0.0 0.592 8.0 156 04/23 12Z 50 47 280 8 0.00 0.00 550 564 4.1 -17.4 1016.7 4 FEW CLR 339FEW350 51 49 15.0 0.0 0.581 7.3 159 04/23 15Z 52 48 296 7 0.00 0.00 550 564 4.7 -17.9 1017.5 40 010SCT018 CLR 296FEW321 53 49 15.0 0.0 0.532 6.9 162 04/23 18Z 57 47 275 6 0.00 0.00 550 565 5.5 -18.7 1017.3 67 011SCT020 CLR 262SCT354 57 49 15.0 0.0 0.512 6.6 165 04/23 21Z 57 46 267 12 0.00 0.00 550 564 6.0 -19.5 1017.1 100 FEW 196BKN238 238OVC375 58 57 15.0 0.0 0.526 7.0 168 04/24 00Z 56 46 267 12 0.00 0.00 549 562 5.6 -20.2 1016.4 87 FEW 184BKN237 241BKN335 58 56 15.0 0.0 0.570 6.9