Station ID: KPDX Lat: 45.59 Long: -122.60 NAM Model Run: 12Z MAY 20, 2026 Forecast Hours: 0hr 6hr 12hr 18hr 24hr 30hr 36hr 42hr 48hr 54hr 60hr 66hr 72hr 78hr 84hr Sfc Prs(mb): 998.5 999.0 995.7 995.6 994.6 995.2 992.2 991.6 990.5 989.9 987.0 986.9 987.3 989.9 989.3 Mean SLP (mb): 1023.3 1023.7 1019.8 1019.9 1019.1 1019.0 1015.7 1015.4 1014.7 1013.5 1010.4 1010.8 1011.7 1014.0 1012.9 2m agl Tmp (F): 49.1 52.5 65.0 57.3 51.8 72.4 77.0 66.0 57.1 74.6 78.6 63.8 52.1 58.0 71.3 2m agl Dewpt(F): 44.7 47.4 51.9 48.8 48.3 42.4 45.9 49.2 41.7 47.6 51.1 52.2 48.7 53.3 55.6 2m agl RH (%): 84 82 62 73 88 33 32 54 56 37 37 65 88 84 56 10m agl Dir: 307 292 318 323 40 91 5 17 52 57 334 332 256 268 299 10m agl Spd(kt): 2 4 8 4 3 10 5 3 4 4 6 4 1 4 6 6hr Precip (in): 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 AccumPrecip(in): 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Sfc CAPE (J/kg): 0.2 1.8 5.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.6 0.3 Sfc CINH (J/kg): 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 -0.3 0.0 -0.1 -1.4 0-3km Hel(J/kg): 44.9 32.1 41.0 38.1 53.5 70.7 34.5 40.1 35.3 19.7 29.3 122.8 53.8 30.2 41.5 Precip H20 (in): 0.83 0.81 0.68 0.78 0.76 0.56 0.57 0.69 0.55 0.54 0.62 0.64 0.64 0.64 0.58 Lifted Index(C): 10.2 11.2 8.6 7.5 5.8 7.5 3.4 2.4 4.5 5.6 3.5 4.3 6.5 7.9 2.4 700mb VV(-ub/s): -0.3 -1.8 -1.6 -0.1 -0.7 -1.6 -1.4 -1.0 -0.9 -1.2 -1.4 0.5 0.2 0.0 -1.1 Thk1000-500mb(m)5520.8 5540.0 5581.3 5590.4 5582.9 5586.2 5605.9 5602.7 5599.5 5611.1 5641.5 5641.4 5622.1 5605.6 5619.9 Thk1000-850mb(m)1337.5 1336.6 1357.9 1360.9 1367.3 1375.1 1388.3 1383.9 1378.1 1384.0 1395.5 1387.2 1370.8 1363.7 1379.0 Thk850-700mb(m):1565.6 1567.7 1580.4 1587.0 1583.5 1582.6 1589.7 1591.3 1590.8 1590.9 1599.4 1602.1 1598.9 1595.7 1597.6 SWEAT Index: 51.8 77.6 55.7 67.3 87.0 41.1 37.7 84.8 47.7 31.4 28.5 21.4 28.1 31.5 33.4 Total Totals Idx 31.0 32.4 31.7 37.4 41.2 38.0 43.2 45.9 42.3 37.4 38.8 36.8 36.0 35.3 36.3 Frz Hgt(ft amsl) 9009 9609 11354 11567 10789 10897 11383 10998 10758 11039 12190 12498 12377 11947 11891 0WetBlbHgt(amsl) 5805 7457 6502 7913 8302 7851 7387 7657 8311 8085 8037 8148 7920 7570 6944 Equil Prs (mb): 999 999 996 996 995 995 992 992 991 990 987 987 987 990 989 Equil Hgt(amsl): 26 26 26 26 26 26 26 26 26 26 26 26 26 26 26 Hail Size(in): 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 Conv Wind Gust: 25.6 18.1 37.2 41.0 38.7 57.2 56.9 45.7 54.1 55.6 52.6 45.5 45.8 45.9 52.6 Showalter Index: 12.7 11.3 11.3 7.8 5.6 7.9 4.8 2.8 5.0 7.8 6.6 7.5 8.1 9.0 8.5 Cap Strength(C):-999.9 0.0 -999.9 -999.9 -999.9 -999.9 -999.9 -999.9 -999.9 -999.9 -999.9 -999.9 -999.9 -999.9 -999.9 Storm Dir (deg): 349 17 20 36 62 75 25 25 30 48 343 301 288 293 297 Storm Spd (kts): 11 10 11 11 11 11 8 8 8 6 5 7 7 7 9 2m HeatIndex(F): 49 53 65 57 52 72 77 66 57 75 79 64 52 58 71 2m WindChill(F): 49 53 65 57 52 72 77 66 57 75 79 64 52 58 71 1000mb GPH (m): 191 195 167 167 159 163 135 131 123 116 90 92 97 118 111 950mb GPH (m): 616 620 602 599 590 603 580 572 560 559 537 530 527 547 552 950mb Temp (C): 8.3 7.3 13.2 12.8 14.3 17.1 20.5 18.8 18.5 18.8 21.6 18.7 14.4 11.8 17.1 950mb Dewpt(C): 8.0 6.6 9.1 8.5 7.3 1.5 4.4 7.8 -2.0 5.2 7.9 9.6 9.4 9.6 11.0 950mb RH (%): 98 95 76 74 62 34 34 48 24 40 40 55 72 86 67 950mb Dir: 336 326 323 355 81 93 8 23 81 68 337 358 336 269 302 950mb Speed(kt): 8 6 10 16 13 18 6 10 9 6 8 14 4 3 8 900mb GPH (m): 1061 1065 1053 1052 1047 1060 1043 1034 1020 1019 1002 994 986 1002 1011 900mb Temp (C): 6.1 6.0 8.7 10.9 13.6 13.7 15.9 15.6 15.7 15.9 17.1 17.4 15.4 13.9 14.1 900mb Dewpt(C): 5.6 5.7 7.3 6.6 5.0 -3.7 3.2 7.1 -4.8 -6.7 6.4 7.6 6.4 3.0 3.5 900mb RH (%): 96 98 91 74 55 29 41 56 24 20 49 51 54 47 48 900mb Dir: 344 2 330 32 91 96 16 44 85 91 351 52 313 307 308 900mb Speed(kt): 8 6 10 12 17 25 7 8 8 11 8 6 5 7 8 850mb GPH (m): 1529 1532 1525 1528 1526 1538 1524 1515 1501 1500 1486 1479 1468 1481 1490 850mb Temp (C): 5.4 5.1 7.5 9.4 10.7 10.2 11.7 12.0 11.7 12.3 13.6 14.4 13.1 11.6 11.5 850mb Dewpt(C): -3.2 2.1 0.7 2.0 2.6 -1.7 -0.4 3.9 1.6 -2.7 0.1 -0.3 0.3 -1.8 -2.3 850mb RH (%): 54 81 62 60 57 43 43 57 49 35 39 36 41 39 38 850mb Dir: 321 24 47 55 96 92 32 32 61 85 29 113 288 288 287 850mb Speed(kt): 14 8 5 6 16 12 8 5 4 7 7 4 4 6 7 800mb GPH (m): 2022 2025 2022 2028 2027 2038 2026 2019 2005 2004 1992 1986 1974 1985 1993 800mb Temp (C): 3.4 3.2 5.7 7.0 6.5 6.6 7.6 8.0 7.9 8.1 10.2 10.7 10.0 8.7 9.0 800mb Dewpt(C): -9.4 -1.4 -9.2 1.7 -0.5 0.4 -3.5 0.1 -0.1 0.0 -5.6 -7.3 -7.3 -4.6 -12.3 800mb RH (%): 38 72 33 69 60 64 45 57 57 56 32 27 29 38 21 800mb Dir: 324 358 43 66 94 39 66 38 43 68 114 195 237 264 267 800mb Speed(kt): 16 8 4 9 13 8 10 5 6 6 5 6 7 8 9 750mb GPH (m): 2542 2546 2548 2556 2553 2564 2555 2548 2534 2533 2524 2519 2506 2516 2524 750mb Temp (C): 1.0 1.5 4.1 4.6 3.4 3.1 5.3 5.0 5.0 4.8 6.3 6.5 6.2 5.9 6.8 750mb Dewpt(C): -7.2 -3.9 -19.0 -11.4 -4.1 -8.7 -27.7 -18.7 -6.1 -7.6 -10.5 -9.4 -9.7 -14.6 -24.8 750mb RH (%): 54 67 17 30 58 41 7 16 44 40 29 31 31 21 8 750mb Dir: 320 356 1 58 65 37 70 2 29 45 162 212 230 251 260 750mb Speed(kt): 17 9 9 11 7 12 7 6 10 5 4 9 11 10 10 700mb GPH (m): 3094 3100 3105 3115 3109 3120 3113 3107 3092 3091 3085 3081 3067 3077 3088 700mb Temp (C): -1.7 -0.7 1.8 2.2 0.7 0.9 2.0 1.6 1.0 1.2 2.7 3.4 3.3 4.0 4.3 700mb Dewpt(C): -3.4 -4.4 -15.4 -18.9 -18.0 -20.3 -22.5 -13.4 -6.4 -11.2 -16.0 -22.1 -22.7 -28.7 -22.8 700mb RH (%): 88 76 27 19 23 19 14 32 57 39 24 14 13 7 12 700mb Dir: 313 357 356 28 13 29 359 357 6 16 205 227 238 267 261 700mb Speed(kt): 17 9 14 12 10 12 5 10 8 4 4 10 12 11 11 650mb GPH (m): 3682 3690 3699 3709 3701 3712 3707 3699 3684 3683 3681 3678 3664 3675 3685 650mb Temp (C): -4.3 -2.1 -1.2 -1.0 -1.6 -1.8 -1.3 -2.2 -2.2 -1.4 0.2 0.8 0.7 -0.2 -0.5 650mb Dewpt(C): -5.4 -10.1 -15.5 -17.3 -18.7 -23.3 -16.1 -12.7 -18.0 -23.8 -30.2 -33.6 -27.5 -12.7 -12.4 650mb RH (%): 92 54 33 28 26 18 32 44 29 17 8 6 10 39 40 650mb Dir: 310 354 357 10 357 17 343 346 346 351 254 253 250 258 259 650mb Speed(kt): 18 14 16 15 15 14 11 12 10 4 5 9 13 13 15 600mb GPH (m): 4310 4323 4332 4343 4333 4344 4340 4330 4315 4317 4317 4315 4301 4309 4319 600mb Temp (C): -7.1 -4.7 -4.5 -3.9 -4.9 -5.1 -5.4 -5.7 -4.7 -3.5 -2.8 -2.9 -3.7 -4.7 -3.4 600mb Dewpt(C): -9.5 -18.7 -20.5 -24.2 -23.2 -20.1 -13.8 -27.8 -32.8 -39.2 -30.7 -26.9 -21.6 -19.0 -36.1 600mb RH (%): 83 33 28 19 23 30 52 16 9 5 10 14 24 32 6 600mb Dir: 310 346 355 1 350 6 337 332 331 342 282 273 249 256 256 600mb Speed(kt): 21 22 20 20 19 16 18 14 14 10 8 10 16 13 17 550mb GPH (m): 4984 5002 5013 5024 5012 5021 5016 5007 4994 4998 4999 4998 4983 4990 5000 550mb Temp (C): -10.2 -8.1 -7.4 -8.0 -9.1 -9.8 -10.2 -9.5 -8.9 -8.7 -8.0 -7.3 -7.1 -7.5 -8.3 550mb Dewpt(C): -14.6 -22.6 -25.3 -21.4 -18.4 -19.9 -20.8 -37.3 -41.2 -31.7 -21.6 -24.6 -28.8 -33.1 -30.0 550mb RH (%): 70 31 23 34 47 44 42 9 6 14 33 24 16 11 16 550mb Dir: 312 342 349 350 346 354 335 337 322 335 297 267 262 264 252 550mb Speed(kt): 22 30 29 26 21 16 19 20 17 14 10 12 14 15 17 500mb GPH (m): 5712 5735 5748 5757 5741 5749 5741 5734 5723 5727 5732 5733 5719 5723 5731 500mb Temp (C): -14.4 -12.7 -11.8 -13.0 -14.0 -14.7 -15.9 -15.0 -14.5 -13.9 -12.6 -11.3 -11.3 -12.7 -13.5 500mb Dewpt(C): -21.5 -26.3 -28.6 -20.4 -21.0 -23.5 -27.0 -37.0 -46.2 -28.0 -27.2 -31.6 -38.1 -26.6 -37.4 500mb RH (%): 56 32 24 55 56 48 39 14 5 30 29 18 9 31 12 500mb Dir: 321 340 346 338 341 343 326 342 323 328 307 294 275 249 257 500mb Speed(kt): 25 37 37 32 23 17 21 28 22 17 14 13 16 20 19 450mb GPH (m): 6503 6531 6546 6550 6533 6537 6526 6521 6511 6520 6529 6532 6518 6519 6524 450mb Temp (C): -18.9 -18.0 -17.5 -19.1 -19.2 -19.9 -21.3 -21.1 -20.1 -18.2 -17.2 -17.1 -17.4 -17.9 -18.5 450mb Dewpt(C): -28.7 -36.4 -31.8 -22.7 -25.5 -27.3 -39.3 -35.1 -32.0 -31.3 -30.8 -27.3 -27.6 -34.4 -34.0 450mb RH (%): 43 19 28 73 58 52 19 28 35 32 30 42 41 23 25 450mb Dir: 334 344 346 334 337 332 320 338 330 336 315 300 270 249 252 450mb Speed(kt): 31 43 42 34 26 22 26 31 27 19 16 15 21 25 28 400mb GPH (m): 7368 7398 7415 7415 7400 7402 7384 7379 7374 7390 7400 7402 7388 7387 7391 400mb Temp (C): -25.7 -25.2 -24.8 -24.7 -24.0 -25.6 -27.4 -26.8 -25.4 -23.4 -23.8 -24.2 -24.3 -24.6 -24.5 400mb Dewpt(C): -36.6 -41.5 -35.6 -28.8 -32.9 -45.7 -41.2 -39.4 -33.8 -39.5 -31.0 -33.1 -31.6 -30.7 -40.3 400mb RH (%): 36 21 37 70 45 14 27 31 46 22 52 44 52 58 23 400mb Dir: 344 348 341 333 335 330 308 337 331 341 315 311 260 257 248 400mb Speed(kt): 37 49 46 39 32 27 31 38 34 25 23 16 22 28 34 350mb GPH (m): 8320 8351 8369 8373 8361 8354 8328 8330 8332 8352 8362 8361 8344 8344 8348 350mb Temp (C): -33.2 -33.0 -32.5 -31.1 -30.5 -33.1 -35.1 -32.7 -30.7 -31.1 -30.7 -30.9 -31.8 -32.1 -32.2 350mb Dewpt(C): -42.2 -48.7 -36.2 -34.7 -45.3 -43.0 -47.7 -46.4 -40.5 -43.0 -38.2 -38.0 -36.1 -35.3 -36.8 350mb RH (%): 41 21 70 72 23 38 28 26 39 31 49 51 67 74 64 350mb Dir: 344 351 337 331 331 313 299 340 331 337 314 297 269 262 246 350mb Speed(kt): 44 58 52 49 42 27 36 43 40 33 28 23 28 32 41 300mb GPH (m): 9382 9417 9437 9448 9438 9419 9388 9398 9405 9425 9439 9435 9415 9414 9420 300mb Temp (C): -42.7 -41.2 -40.4 -39.2 -38.8 -40.9 -41.9 -40.3 -39.6 -39.8 -38.5 -39.4 -40.1 -40.5 -40.1 300mb Dewpt(C): -50.2 -57.0 -44.9 -43.7 -44.0 -50.3 -56.6 -50.6 -48.6 -48.5 -47.2 -45.1 -43.9 -43.6 -43.5 300mb RH (%): 46 18 63 63 59 38 20 34 40 41 41 56 68 72 71 300mb Dir: 350 355 341 335 322 300 316 348 341 341 305 286 269 260 253 300mb Speed(kt): 52 71 62 54 47 38 39 51 45 37 35 27 31 37 41 250mb GPH (m): 10582 10627 10657 10672 10664 10637 10596 10618 10624 10645 10662 10656 10632 10630 10636 250mb Temp (C): -53.7 -51.2 -49.3 -48.7 -48.1 -49.3 -50.8 -49.1 -49.8 -49.3 -49.2 -49.2 -49.9 -50.1 -50.4 250mb Dewpt(C): -59.0 -64.5 -54.1 -52.4 -55.5 -60.8 -58.1 -57.7 -59.4 -57.5 -54.1 -56.4 -54.3 -53.4 -54.1 250mb RH (%): 54 21 59 66 44 27 43 38 34 40 58 45 62 70 67 250mb Dir: 353 354 347 339 318 293 328 351 348 343 313 279 272 258 255 250mb Speed(kt): 52 79 69 60 50 54 48 58 56 46 37 35 32 41 47 200mb GPH (m): 11990 12035 12079 12100 12099 12066 12026 12050 12052 12070 12086 12083 12056 12054 12058 200mb Temp (C): -59.4 -63.3 -60.6 -59.1 -57.8 -58.3 -56.1 -56.9 -57.8 -59.8 -60.3 -59.0 -59.4 -58.4 -59.5 200mb Dewpt(C): -66.1 -65.9 -64.3 -63.9 -68.6 -68.8 -68.4 -64.8 -65.5 -65.1 -64.1 -64.6 -64.0 -63.8 -63.4 200mb RH (%): 44 72 64 56 26 27 22 39 39 53 63 51 57 52 62 200mb Dir: 346 350 352 343 319 291 325 345 332 330 316 283 271 262 253 200mb Speed(kt): 78 83 79 64 54 59 50 67 59 49 40 34 39 57 58 150mb GPH (m): 13786 13803 13837 13866 13876 13851 13842 13847 13846 13852 13864 13864 13834 13828 13830 150mb Temp (C): -60.1 -59.4 -64.4 -66.1 -66.0 -62.1 -58.0 -60.7 -61.6 -62.6 -62.2 -62.9 -63.8 -63.4 -63.0 150mb Dewpt(C): -79.7 -81.9 -77.5 -75.0 -74.7 -78.6 -80.9 -79.5 -78.9 -76.8 -76.9 -77.4 -74.2 -75.3 -76.0 150mb RH (%): 8 5 18 31 32 11 5 8 10 15 15 15 26 21 18 150mb Dir: 338 349 352 347 327 302 325 334 324 329 314 293 266 256 254 150mb Speed(kt): 57 55 66 55 37 38 42 41 39 37 29 30 39 45 47 100mb GPH (m): 16327 16336 16357 16363 16358 16367 16378 16375 16363 16368 16377 16370 16341 16348 16360 100mb Temp (C): -58.1 -58.9 -58.8 -59.6 -61.6 -61.3 -60.9 -59.9 -60.0 -60.1 -60.5 -60.6 -59.5 -59.6 -58.7 100mb Dewpt(C): -91.4 -92.0 -81.5 -87.9 -89.6 -89.4 -89.1 -88.4 -88.4 -88.5 -88.8 -88.9 -88.0 -88.1 -87.5 100mb RH (%): 1 1 5 2 2 2 2 2 2 2 2 2 2 2 2 100mb Dir: 328 334 338 337 344 350 323 332 351 323 311 294 261 248 251 100mb Speed(kt): 24 27 29 29 27 22 20 26 21 15 16 13 16 20 22