Station ID: KOAK Lat: 37.71 Long: 122.23 GFS Model Run: 0Z 18APR 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 04/18 00Z 62 40 292 9 0.00 0.00 558 572 8.2 -13.8 1016.6 100 CLR CLR 000OVC000 **** **** 15.0 0.0 0.301 13.2 3 04/18 03Z 54 41 289 5 0.00 0.00 558 572 9.8 -14.1 1016.8 98 CLR CLR 273OVC333 62 54 15.0 0.0 0.296 13.4 6 04/18 06Z 52 42 251 3 0.00 0.00 558 573 9.9 -14.5 1017.5 99 CLR 223FEW242 262OVC359 62 52 15.0 0.0 0.319 13.1 9 04/18 09Z 50 42 191 2 0.00 0.00 558 572 9.7 -14.8 1017.0 93 CLR 221FEW242 248BKN346 52 50 15.0 0.0 0.333 13.2 12 04/18 12Z 50 42 159 2 0.00 0.00 557 571 9.6 -14.9 1016.2 96 CLR 224FEW241 251BKN325 52 50 15.0 0.0 0.342 13.3 15 04/18 15Z 53 40 105 1 0.00 0.00 557 571 9.7 -14.8 1016.4 100 CLR 229SCT242 280OVC340 53 49 15.0 0.0 0.350 13.3 18 04/18 18Z 64 39 301 1 0.00 0.00 558 571 9.7 -14.9 1015.9 100 CLR 226SCT242 270OVC357 64 49 15.0 0.0 0.364 12.8 21 04/18 21Z 67 39 275 5 0.00 0.00 558 571 10.0 -15.2 1014.5 96 CLR 223FEW242 242BKN391 68 64 15.0 0.0 0.360 14.8 24 04/19 00Z 65 44 294 9 0.00 0.00 558 569 10.4 -15.6 1012.8 98 CLR 228FEW241 241BKN394 70 62 15.0 0.0 0.450 15.4 27 04/19 03Z 57 45 305 5 0.00 0.00 558 569 10.5 -15.8 1012.9 100 CLR 228BKN241 241OVC399 64 57 15.0 0.0 0.478 15.3 30 04/19 06Z 55 44 305 3 0.00 0.00 558 568 10.4 -16.6 1013.0 100 CLR 215BKN241 241OVC396 65 55 15.0 0.0 0.574 14.5 33 04/19 09Z 54 45 297 3 0.00 0.00 557 567 10.1 -16.7 1012.3 100 CLR 171OVC240 240OVC389 55 54 15.0 0.0 0.517 13.6 36 04/19 12Z 53 45 293 1 0.00 0.00 556 565 9.9 -17.8 1011.6 100 CLR 182OVC240 240OVC383 55 53 15.0 0.0 0.447 12.9 39 04/19 15Z 55 45 192 0 0.00 0.00 554 564 9.8 -16.9 1012.0 100 CLR 168OVC240 240OVC365 55 52 15.0 0.0 0.441 12.3 42 04/19 18Z 63 42 282 3 0.00 0.00 555 565 9.2 -16.9 1012.4 100 CLR 158OVC237 250BKN360 62 52 15.0 0.0 0.461 10.7 45 04/19 21Z 67 42 289 8 0.00 0.00 556 565 8.5 -16.2 1011.0 73 CLR 151BKN205 293SCT375 67 62 15.0 0.0 0.524 13.4 48 04/20 00Z 64 40 274 9 0.00 0.00 556 565 10.0 -16.0 1010.5 66 CLR 152SCT204 284SCT381 67 62 15.0 0.0 0.479 12.4 51 04/20 03Z 56 43 299 6 0.00 0.00 555 565 10.2 -16.5 1011.2 100 CLR CLR 254OVC399 64 56 15.0 0.0 0.477 12.7 54 04/20 06Z 54 42 113 2 0.00 0.00 555 565 10.4 -16.2 1011.6 100 CLR CLR 249OVC400 64 54 15.0 0.0 0.388 11.7 57 04/20 09Z 53 40 146 6 0.00 0.00 554 564 8.9 -16.6 1012.4 98 CLR 222FEW236 240OVC338 54 53 15.0 0.0 0.434 10.4 60 04/20 12Z 51 44 133 7 0.00 0.00 553 563 7.6 -16.5 1012.4 95 CLR 211SCT239 240BKN315 54 51 15.0 0.0 0.674 10.1 63 04/20 15Z 54 40 123 8 0.00 0.00 553 563 7.8 -16.6 1012.2 92 083SCT119 149BKN180 CLR 54 51 15.0 0.0 0.725 11.4 66 04/20 18Z 60 37 121 6 0.00 0.00 553 564 7.6 -16.8 1012.4 96 083BKN119 133BKN165 CLR 60 51 15.0 0.0 0.705 11.5 69 04/20 21Z 61 45 211 18 0.00 0.00 553 563 5.7 -16.9 1012.6 92 073BKN119 120SCT176 357FEW390 65 60 15.0 0.0 0.871 10.8 72 04/21 00Z 58 49 184 11 0.01 0.00 552 562 6.8 -17.3 1011.8 96 -RA 066BKN116 119BKN189 345FEW377 65 57 15.1 0.0 1.026 10.0 75 04/21 03Z 55 53 125 1 0.06 0.00 551 561 6.4 -17.6 1012.1 96 -RA 011BKN118 119BKN153 CLR 59 55 14.9 0.0 0.988 9.0 78 04/21 06Z 55 54 102 4 0.39 0.00 551 561 5.7 -17.2 1011.6 98 RA 007BKN109 119BKN179 338FEW365 59 54 2.6 0.0 1.124 9.2 81 04/21 09Z 54 53 90 5 0.49 0.01 551 559 5.8 -17.8 1010.2 100 RA 000OVC118 118OVC225 CLR 55 54 4.1 0.0 1.077 8.7 84 04/21 12Z 53 51 137 11 0.36 0.00 548 557 5.3 -19.6 1010.0 100 RA 000OVC118 118BKN216 CLR 55 53 14.5 0.0 0.933 8.6 87 04/21 15Z 54 51 141 8 0.07 0.04 545 553 4.2 -19.7 1010.1 97 -TSRA 003BKN107 135BKN175 CLR 54 53 12.9 0.0 0.849 8.1 90 04/21 18Z 54 50 178 10 0.05 0.03 543 552 2.8 -24.3 1010.7 99 -TSRA 016BKN111 149BKN198 234SCT285 56 53 6.5 0.0 0.846 7.7 93 04/21 21Z 58 51 187 15 0.09 0.05 542 552 2.4 -24.2 1011.3 99 -TSRA 004BKN106 133BKN233 234BKN264 58 53 9.6 0.0 0.709 7.8 96 04/22 00Z 56 48 219 14 0.04 0.04 541 551 2.3 -24.8 1011.5 100 -TSRA 011BKN089 159BKN233 233BKN266 58 53 12.8 0.0 0.608 7.1 99 04/22 03Z 52 46 226 8 0.01 0.01 540 550 1.8 -25.1 1012.2 96 -RA 033FEW062 146BKN231 233BKN255 56 52 15.1 0.0 0.593 6.2 102 04/22 06Z 50 46 185 6 0.04 0.04 540 551 1.6 -24.9 1013.9 80 -TSRA 070FEW089 142BKN205 233SCT256 56 50 7.9 0.0 0.662 6.3 105 04/22 09Z 51 47 165 6 0.04 0.04 539 551 0.6 -25.7 1014.3 100 -TSRA 056BKN116 134OVC197 233OVC264 51 50 12.0 0.0 0.721 6.2 108 04/22 12Z 49 47 40 2 0.14 0.03 539 552 0.7 -25.6 1015.5 100 -TSRA 029BKN116 125OVC213 233OVC263 51 49 14.2 0.0 0.718 5.2 111 04/22 15Z 51 47 61 1 0.01 0.00 540 555 0.8 -25.5 1017.3 100 000OVC111 177SCT205 234BKN257 51 49 15.0 0.0 0.649 5.3 114 04/22 18Z 55 46 122 0 0.00 0.00 543 559 1.3 -22.7 1018.8 93 012BKN097 178FEW206 236SCT260 55 49 14.8 0.0 0.597 5.6 117 04/22 21Z 58 46 281 6 0.01 0.01 545 561 1.9 -22.3 1019.2 44 -RA 046SCT066 CLR CLR 59 55 15.0 0.0 0.605 7.5 120 04/23 00Z 59 45 296 7 0.00 0.00 546 561 2.5 -22.0 1018.6 43 -RA 045SCT066 CLR CLR 60 55 15.0 0.0 0.583 8.3 123 04/23 03Z 53 46 285 7 0.00 0.00 546 562 3.7 -21.4 1019.0 9 043FEW056 CLR CLR 59 53 15.0 0.0 0.579 8.3 126 04/23 06Z 51 46 271 5 0.00 0.00 547 564 3.5 -18.8 1019.9 19 043FEW056 CLR 274FEW311 59 51 15.0 0.0 0.567 8.3 129 04/23 09Z 50 47 266 6 0.00 0.00 548 564 4.8 -19.1 1019.4 60 CLR CLR 273BKN309 51 50 15.0 0.0 0.407 8.5 132 04/23 12Z 49 46 292 7 0.00 0.00 549 565 5.7 -18.8 1018.4 30 CLR CLR 272SCT309 51 49 15.0 0.0 0.334 7.9 135 04/23 15Z 51 46 303 4 0.00 0.00 550 566 5.4 -19.1 1018.5 6 FEW CLR CLR 51 47 15.0 0.0 0.309 5.9 138 04/23 18Z 57 43 299 4 0.00 0.00 551 566 5.0 -19.0 1017.8 5 FEW CLR CLR 57 47 15.0 0.0 0.356 6.2 141 04/23 21Z 60 44 274 8 0.00 0.00 552 566 4.1 -18.5 1016.7 0 CLR CLR CLR 61 57 15.0 0.0 0.460 9.4 144 04/24 00Z 58 46 281 10 0.00 0.00 553 565 5.6 -18.1 1015.0 3 CLR CLR 300FEW321 61 56 15.0 0.0 0.530 9.6 147 04/24 03Z 53 45 271 6 0.00 0.00 553 566 7.5 -18.6 1014.9 51 CLR CLR 274SCT345 58 53 15.0 0.0 0.512 10.5 150 04/24 06Z 51 45 203 4 0.00 0.00 552 565 8.0 -18.4 1015.1 48 CLR CLR 272SCT334 58 51 15.0 0.0 0.559 10.5 153 04/24 09Z 50 46 187 4 0.00 0.00 551 563 8.0 -18.6 1014.3 51 CLR CLR 250SCT331 51 50 15.0 0.0 0.578 10.9 156 04/24 12Z 49 46 150 4 0.00 0.00 551 562 7.2 -18.9 1013.4 33 CLR CLR 253SCT320 51 49 15.0 0.0 0.609 11.2 159 04/24 15Z 52 46 128 3 0.00 0.00 550 561 6.7 -20.1 1013.7 2 CLR CLR 253FEW265 52 48 15.0 0.0 0.603 10.7 162 04/24 18Z 62 45 11 3 0.00 0.00 549 561 6.9 -20.4 1013.2 1 CLR CLR CLR 62 48 15.0 0.0 0.559 11.1 165 04/24 21Z 66 47 304 9 0.00 0.00 550 560 6.7 -20.8 1012.1 0 CLR CLR CLR 67 62 15.0 0.0 0.593 13.0 168 04/25 00Z 61 49 289 11 0.00 0.00 550 559 8.2 -20.9 1010.8 0 CLR CLR CLR 67 59 15.0 0.0 0.613 13.4