Station ID: KOAK Lat: 37.71 Long: 122.23 GFS Model Run: 12Z 15APR 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 04/15 12Z 49 45 209 4 0.00 0.00 554 569 8.3 -17.6 1018.5 100 CLR 000OVC000 000OVC000 **** **** 15.0 0.0 0.592 8.7 3 04/15 15Z 52 46 177 4 0.00 0.00 553 568 8.3 -18.4 1018.8 100 CLR 156OVC240 246OVC370 52 49 15.0 0.0 0.635 9.2 6 04/15 18Z 57 45 266 6 0.00 0.00 552 569 8.1 -17.9 1019.6 100 CLR 146BKN240 243OVC390 57 49 15.0 0.0 0.672 7.9 9 04/15 21Z 60 47 272 13 0.00 0.00 553 569 8.2 -17.9 1018.9 89 CLR 127BKN240 259BKN373 60 57 15.0 0.0 0.718 8.5 12 04/16 00Z 58 48 274 13 0.00 0.00 553 568 8.0 -17.4 1018.1 85 CLR 127SCT236 275BKN390 60 57 15.0 0.0 0.836 8.7 15 04/16 03Z 53 49 281 8 0.00 0.00 553 569 7.3 -17.1 1018.4 100 CLR CLR 289OVC408 58 53 15.0 0.0 0.789 9.9 18 04/16 06Z 53 51 284 8 0.00 0.00 554 569 6.1 -17.6 1018.7 85 010FEW015 CLR 294BKN399 58 52 15.0 0.0 0.678 9.2 21 04/16 09Z 51 47 267 8 0.00 0.00 553 568 6.5 -17.1 1018.0 26 006FEW014 CLR 378FEW396 53 50 15.0 0.0 0.304 8.7 24 04/16 12Z 47 42 294 3 0.00 0.00 553 567 7.4 -16.9 1017.4 16 006FEW014 CLR 375FEW398 53 47 15.0 0.0 0.237 7.2 27 04/16 15Z 49 42 32 2 0.00 0.00 552 567 5.2 -16.7 1018.5 6 CLR CLR 362FEW395 50 46 15.0 0.0 0.319 5.8 30 04/16 18Z 59 35 16 10 0.00 0.00 552 568 5.6 -16.3 1018.5 6 CLR CLR 360FEW392 59 46 15.0 0.0 0.349 6.9 33 04/16 21Z 65 31 325 10 0.00 0.00 554 568 5.4 -15.8 1016.6 8 CLR CLR 344FEW396 65 59 15.0 0.0 0.217 11.5 36 04/17 00Z 64 37 273 9 0.00 0.00 555 568 6.8 -15.5 1015.6 8 CLR CLR 353FEW400 66 58 15.0 0.0 0.271 13.0 39 04/17 03Z 55 41 308 8 0.00 0.00 555 568 6.7 -15.0 1016.2 6 CLR CLR 378FEW402 64 55 15.0 0.0 0.255 12.3 42 04/17 06Z 53 42 313 5 0.00 0.00 555 569 7.0 -15.3 1016.5 4 CLR CLR 363FEW384 64 53 15.0 0.0 0.268 12.5 45 04/17 09Z 51 34 355 6 0.00 0.00 556 569 7.9 -15.5 1016.0 6 CLR CLR 341FEW368 53 51 15.0 0.0 0.218 12.4 48 04/17 12Z 49 27 47 3 0.00 0.00 555 569 7.7 -15.9 1016.5 5 CLR CLR 333FEW355 53 49 15.0 0.0 0.204 11.1 51 04/17 15Z 51 26 82 2 0.00 0.00 555 570 7.4 -15.9 1017.6 3 CLR CLR 348FEW360 52 47 15.0 0.0 0.194 9.6 54 04/17 18Z 62 28 357 2 0.00 0.00 556 570 7.1 -15.4 1017.6 6 CLR CLR 344FEW369 62 47 15.0 0.0 0.194 9.9 57 04/17 21Z 66 32 297 7 0.00 0.00 557 571 7.1 -15.0 1016.5 69 CLR CLR 293BKN391 66 62 15.0 0.0 0.244 12.3 60 04/18 00Z 63 39 289 8 0.00 0.00 557 570 8.6 -14.9 1015.6 66 CLR CLR 278BKN394 67 62 15.0 0.0 0.316 12.7 63 04/18 03Z 54 44 284 5 0.00 0.00 557 570 8.5 -14.9 1016.5 68 CLR 195FEW242 260BKN362 64 54 15.0 0.0 0.366 13.1 66 04/18 06Z 52 43 241 3 0.00 0.00 557 571 9.1 -15.1 1017.1 84 CLR 182FEW242 259BKN380 64 52 15.0 0.0 0.391 12.4 69 04/18 09Z 50 43 195 3 0.00 0.00 557 570 9.3 -14.9 1016.8 95 CLR 181FEW241 259BKN393 52 50 15.0 0.0 0.409 12.1 72 04/18 12Z 51 44 176 3 0.00 0.00 556 569 9.2 -15.6 1015.8 98 CLR 161BKN241 249BKN394 52 50 15.0 0.0 0.449 12.1 75 04/18 15Z 53 44 161 2 0.00 0.00 556 569 9.2 -15.6 1016.0 100 CLR 135OVC241 241OVC401 53 51 15.0 0.0 0.534 12.1 78 04/18 18Z 60 43 309 0 0.00 0.00 556 569 9.2 -15.9 1015.9 100 100FEW120 127OVC241 241BKN396 61 51 15.0 0.0 0.610 11.9 81 04/18 21Z 64 40 264 5 0.00 0.00 557 569 9.3 -16.1 1014.3 100 104FEW120 148BKN228 250BKN370 65 61 15.0 0.0 0.547 13.0 84 04/19 00Z 63 44 292 8 0.00 0.00 557 568 9.6 -16.9 1012.9 100 104FEW120 145BKN234 250BKN368 67 60 15.0 0.0 0.576 13.8 87 04/19 03Z 55 45 284 5 0.00 0.00 556 567 9.8 -16.9 1013.1 100 CLR 179OVC241 250OVC286 62 55 15.0 0.0 0.609 13.8 90 04/19 06Z 53 43 243 3 0.00 0.00 556 567 9.5 -16.6 1013.6 100 CLR 182OVC240 245OVC278 62 53 15.0 0.0 0.525 12.6 93 04/19 09Z 51 41 193 2 0.00 0.00 555 565 9.7 -16.7 1012.5 98 CLR 196BKN240 288SCT325 52 51 15.0 0.0 0.534 12.5 96 04/19 12Z 51 40 261 2 0.00 0.00 554 564 8.9 -17.2 1011.6 98 CLR 201BKN239 293BKN358 52 51 15.0 0.0 0.639 11.6 99 04/19 15Z 54 43 137 2 0.00 0.00 554 563 8.8 -17.4 1011.2 76 092FEW103 213BKN234 257SCT336 54 50 15.0 0.0 0.789 11.0 102 04/19 18Z 61 48 265 2 0.00 0.00 553 563 8.6 -17.3 1011.1 85 092FEW107 212SCT231 258BKN336 61 50 15.0 0.0 0.794 10.8 105 04/19 21Z 64 51 285 10 0.00 0.00 554 563 7.8 -17.1 1010.3 100 095FEW105 230FEW239 248OVC363 65 61 15.0 0.0 0.835 11.7 108 04/20 00Z 61 51 275 10 0.00 0.00 554 562 8.8 -16.8 1009.7 100 095FEW103 217BKN239 246OVC371 65 60 15.0 0.0 0.788 11.0 111 04/20 03Z 57 52 271 5 0.00 0.00 554 562 7.9 -16.9 1009.8 100 093FEW098 202BKN239 239OVC384 61 57 15.1 0.0 0.792 10.9 114 04/20 06Z 55 51 144 3 0.00 0.00 553 562 7.1 -17.2 1010.9 100 CLR 202SCT237 239OVC380 61 55 15.0 0.0 0.884 10.8 117 04/20 09Z 56 51 136 7 0.00 0.00 552 561 6.4 -18.1 1011.0 100 CLR 196OVC238 239OVC368 56 55 15.0 0.0 0.889 10.1 120 04/20 12Z 55 52 146 7 0.00 0.00 551 560 5.2 -17.9 1011.3 100 030FEW059 185OVC235 238OVC348 56 55 15.0 0.0 0.966 9.7 123 04/20 15Z 58 51 135 8 0.00 0.00 551 561 5.8 -17.4 1011.5 98 047FEW068 183BKN229 239BKN278 58 55 15.0 0.0 0.871 10.7 126 04/20 18Z 65 50 157 9 0.00 0.00 552 562 5.5 -17.3 1011.6 61 062FEW084 181BKN224 239SCT278 65 55 15.0 0.0 0.873 11.9 129 04/20 21Z 67 49 205 19 0.00 0.00 552 562 6.9 -17.8 1011.0 54 059SCT074 150FEW177 CLR 68 65 15.0 0.0 0.907 12.9 132 04/21 00Z 61 49 196 12 0.00 0.00 553 561 8.2 -17.5 1010.1 58 070SCT099 139FEW177 380FEW402 68 61 15.0 0.0 0.943 12.5 135 04/21 03Z 56 52 178 11 0.02 0.00 551 561 6.7 -17.9 1010.9 99 -RA 038OVC115 119BKN191 384FEW407 61 56 8.9 0.0 1.027 9.8 138 04/21 06Z 53 51 265 2 0.15 0.00 550 560 5.6 -19.4 1011.7 99 -RA 019OVC116 118BKN192 383FEW406 61 53 12.1 0.0 1.017 8.9 141 04/21 09Z 55 52 137 10 0.23 0.01 548 558 3.8 -18.2 1011.4 100 RA 000OVC118 118OVC195 CLR 55 53 4.1 0.0 0.990 8.4 144 04/21 12Z 54 51 181 7 0.28 0.07 546 555 3.3 -21.1 1011.2 100 -TSRA 000OVC117 117OVC214 236FEW245 55 53 6.6 0.0 0.883 7.9 147 04/21 15Z 55 50 156 5 0.06 0.04 544 554 3.2 -22.9 1011.9 100 -TSRA 014BKN112 128OVC215 235SCT244 55 53 14.3 0.0 0.714 8.1 150 04/21 18Z 58 49 184 9 0.04 0.04 541 552 2.5 -24.8 1013.1 100 -TSRA 036BKN114 143BKN205 234BKN261 58 53 12.2 0.0 0.702 7.8 153 04/21 21Z 59 46 215 10 0.04 0.04 541 552 2.4 -24.9 1012.7 100 -TSRA 057SCT068 125OVC234 234OVC265 60 58 12.2 0.0 0.670 8.5 156 04/22 00Z 59 44 227 11 0.02 0.02 541 551 2.4 -25.1 1011.9 100 -TSRA 056SCT093 128BKN227 233BKN259 60 58 14.7 0.0 0.705 8.3 159 04/22 03Z 54 46 219 8 0.00 0.00 540 550 2.5 -25.9 1012.2 92 058SCT117 117BKN231 233FEW242 59 54 13.6 0.0 0.645 7.2 162 04/22 06Z 52 47 234 6 0.03 0.03 539 551 2.3 -26.7 1013.8 68 -RA 059SCT117 118BKN230 233FEW242 59 51 15.3 0.0 0.637 6.6 165 04/22 09Z 51 47 194 6 0.03 0.03 539 551 1.7 -27.3 1014.7 100 -TSRA 111FEW117 129OVC233 CLR 52 51 15.0 0.0 0.587 5.8 168 04/22 12Z 49 46 156 6 0.00 0.00 539 551 1.7 -27.3 1015.5 86 -TSRA 051FEW056 146BKN232 CLR 52 49 15.2 0.0 0.566 5.5