Station ID: KPDX Lat: 45.59 Long: -122.60 NAM Model Run: 12Z MAY 18, 2026 Forecast Hours: 0hr 6hr 12hr 18hr 24hr 30hr 36hr 42hr 48hr 54hr 60hr 66hr 72hr 78hr 84hr Sfc Prs(mb): 1000.0 999.9 998.5 1000.1 1000.8 1001.7 999.8 999.5 999.2 999.6 996.2 996.2 995.3 995.3 991.7 Mean SLP (mb): 1025.0 1024.5 1022.8 1024.8 1025.8 1026.5 1024.1 1024.2 1024.1 1024.3 1020.2 1020.4 1019.7 1019.0 1015.2 2m agl Tmp (F): 47.0 55.3 63.4 51.6 47.0 50.1 60.9 51.8 48.3 52.8 68.1 59.5 54.5 73.3 77.1 2m agl Dewpt(F): 43.2 46.8 47.9 45.8 44.9 47.1 50.0 47.8 46.0 48.2 53.2 47.9 43.9 45.3 45.9 2m agl RH (%): 87 72 56 80 92 89 66 86 92 84 58 65 67 36 32 10m agl Dir: 282 262 303 303 276 262 319 305 302 286 330 355 50 84 354 10m agl Spd(kt): 1 6 8 4 2 2 8 4 4 4 9 3 4 6 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): 0.0 9.8 29.6 0.0 3.5 12.9 57.5 0.1 4.0 16.2 0.2 0.0 0.0 0.0 0.0 Sfc CINH (J/kg): 0.0 0.0 0.0 0.0 0.0 0.0 0.0 -0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0-3km Hel(J/kg): 55.7 45.4 29.6 60.1 65.8 58.7 51.3 52.3 39.6 13.4 30.4 45.6 41.9 -4.2 -2.3 Precip H20 (in): 0.54 0.60 0.55 0.59 0.75 0.79 0.71 0.73 0.75 0.61 0.63 0.69 0.62 0.56 0.66 Lifted Index(C): 4.2 5.3 2.8 4.9 7.2 7.9 7.4 9.9 9.8 11.3 7.0 7.0 9.6 7.2 4.2 700mb VV(-ub/s): -3.0 -0.6 -1.4 -0.7 -0.5 -0.2 -1.3 -1.3 -0.4 -1.7 -0.7 -0.1 -0.7 -1.5 -1.3 Thk1000-500mb(m)5432.8 5444.4 5475.9 5475.1 5480.6 5492.3 5525.5 5531.2 5514.9 5527.8 5582.8 5596.9 5593.4 5592.1 5616.0 Thk1000-850mb(m)1332.0 1334.4 1350.3 1341.5 1333.6 1334.1 1344.1 1338.3 1333.9 1336.8 1366.8 1372.3 1371.5 1376.3 1389.2 Thk850-700mb(m):1550.1 1551.3 1554.9 1558.9 1560.1 1559.4 1564.9 1573.1 1569.7 1573.0 1582.3 1587.0 1583.0 1582.8 1591.8 SWEAT Index: 70.3 48.5 46.8 57.0 79.7 92.9 55.6 43.9 51.6 59.7 67.8 78.2 59.2 57.8 31.6 Total Totals Idx 47.8 46.2 38.6 34.0 41.1 40.1 34.6 35.3 35.0 32.4 29.6 38.0 35.1 32.7 41.1 Frz Hgt(ft amsl) 7083 7374 7825 8123 8373 8314 9775 10482 10094 10080 10809 11133 10909 10983 11752 0WetBlbHgt(amsl) 5841 6005 5059 4730 7082 7138 5799 6296 5937 6016 6856 7802 7672 7198 7437 Equil Prs (mb): 1000 1000 526 1000 1001 1002 798 1000 999 1000 996 996 995 995 992 Equil Hgt(amsl): 26 26 17338 26 26 26 6747 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 -0.05 0.00 0.00 0.00 0.00 Conv Wind Gust: 28.2 27.8 43.0 38.5 33.0 25.0 30.7 27.4 30.8 42.6 45.7 44.5 49.6 56.8 57.3 Showalter Index: 4.2 5.0 8.9 10.6 7.3 7.7 10.9 10.4 10.7 11.6 12.4 7.1 9.2 10.8 5.8 Cap Strength(C):-999.9 -999.9 -999.9 -999.9 -999.9 -999.9 0.0 -999.9 -999.9 1.4 -999.9 -999.9 -999.9 -999.9 -999.9 Storm Dir (deg): 359 6 357 4 1 350 350 0 7 41 44 49 65 76 44 Storm Spd (kts): 10 11 10 13 14 12 14 12 11 10 13 11 12 11 8 2m HeatIndex(F): 47 55 63 52 47 50 61 52 48 53 68 60 54 73 77 2m WindChill(F): 47 55 63 52 47 50 61 52 48 53 68 60 54 73 77 1000mb GPH (m): 204 203 192 205 210 217 202 200 197 200 172 171 164 163 131 950mb GPH (m): 626 628 624 631 632 639 632 626 619 625 609 606 599 604 576 950mb Temp (C): 7.0 7.1 11.9 9.1 7.0 7.6 10.4 8.4 6.7 6.6 14.8 15.8 16.7 17.7 20.6 950mb Dewpt(C): 4.9 6.4 6.8 7.5 5.3 6.1 8.0 7.3 6.3 6.4 9.8 7.8 3.0 3.5 4.6 950mb RH (%): 86 95 70 89 89 90 85 92 97 98 71 58 39 38 34 950mb Dir: 333 270 306 333 345 351 322 336 348 320 337 25 101 87 355 950mb Speed(kt): 6 6 10 14 3 2 10 12 10 3 12 13 13 10 7 900mb GPH (m): 1070 1071 1073 1078 1077 1085 1080 1071 1064 1068 1063 1064 1057 1062 1039 900mb Temp (C): 6.3 5.2 7.5 7.5 6.6 6.4 6.7 6.5 6.1 6.9 11.0 14.2 14.0 13.7 16.1 900mb Dewpt(C): 3.5 3.2 5.8 -1.6 3.0 4.5 4.3 3.9 4.5 2.1 6.8 4.3 0.7 -3.3 3.3 900mb RH (%): 82 87 89 52 78 88 84 83 89 71 75 50 40 30 42 900mb Dir: 351 340 309 345 332 334 324 355 1 78 348 53 113 91 6 900mb Speed(kt): 10 8 11 10 15 14 12 11 13 11 12 6 15 15 8 850mb GPH (m): 1536 1537 1542 1546 1544 1551 1546 1538 1531 1537 1539 1544 1535 1539 1520 850mb Temp (C): 2.9 4.5 5.1 5.4 4.5 3.3 3.2 4.1 4.5 6.5 9.3 10.6 10.3 9.9 11.8 850mb Dewpt(C): 1.4 -1.2 -7.5 -11.9 0.4 2.7 0.0 -0.2 -1.3 -2.5 -2.9 3.1 -1.1 -5.8 -0.3 850mb RH (%): 90 66 39 27 74 96 79 74 66 52 42 59 45 32 42 850mb Dir: 341 356 327 330 331 309 302 343 354 83 64 64 98 89 33 850mb Speed(kt): 14 12 12 13 17 13 11 9 14 13 12 4 15 19 8 800mb GPH (m): 2025 2028 2034 2039 2036 2042 2036 2031 2024 2032 2038 2045 2036 2039 2023 800mb Temp (C): 0.6 1.5 2.2 2.6 2.4 2.0 2.7 4.8 4.1 4.7 6.5 7.0 6.4 6.7 7.8 800mb Dewpt(C): -6.2 -4.8 -16.1 -7.8 -1.2 0.0 -10.4 -8.0 -9.3 -11.9 -7.4 0.7 -0.8 -6.0 -3.3 800mb RH (%): 60 63 24 46 77 86 37 39 37 29 36 64 60 39 45 800mb Dir: 339 0 326 331 330 288 307 336 355 67 77 51 77 59 70 800mb Speed(kt): 14 13 11 14 15 14 14 14 15 10 14 5 12 14 11 750mb GPH (m): 2541 2544 2551 2557 2555 2561 2558 2556 2547 2556 2564 2573 2561 2565 2552 750mb Temp (C): -1.7 -2.1 -1.1 -0.5 0.0 -0.1 1.9 3.1 2.6 3.0 4.3 4.7 3.6 4.0 5.6 750mb Dewpt(C): -19.7 -10.6 -22.8 -9.3 -4.6 -7.0 -12.6 -12.9 -19.3 -38.7 -23.2 -14.7 -10.9 -15.2 -25.1 750mb RH (%): 24 52 18 51 71 60 33 30 18 3 11 23 34 23 9 750mb Dir: 328 356 330 334 326 289 310 332 352 31 59 39 33 46 83 750mb Speed(kt): 14 12 10 16 15 14 16 18 14 10 11 10 8 14 11 700mb GPH (m): 3086 3089 3097 3105 3104 3111 3111 3111 3101 3110 3121 3131 3118 3122 3112 700mb Temp (C): -4.2 -5.2 -4.5 -3.3 -3.4 -1.7 -0.6 0.5 -0.1 -0.2 1.0 1.6 1.0 1.2 2.4 700mb Dewpt(C): -26.0 -32.3 -16.1 -11.6 -7.1 -20.2 -11.3 -13.3 -11.5 -21.6 -24.9 -22.0 -18.9 -19.9 -20.9 700mb RH (%): 17 10 40 53 75 23 44 35 42 18 13 16 21 19 16 700mb Dir: 326 341 334 331 318 314 313 336 335 15 36 33 21 37 51 700mb Speed(kt): 16 15 11 16 17 17 19 17 14 12 11 13 13 14 6 650mb GPH (m): 3665 3666 3676 3687 3686 3695 3701 3702 3690 3699 3712 3723 3710 3714 3707 650mb Temp (C): -8.7 -9.3 -7.7 -7.1 -6.6 -5.4 -3.2 -2.9 -3.5 -3.7 -2.3 -2.0 -1.9 -1.9 -0.6 650mb Dewpt(C): -33.0 -25.5 -14.1 -14.9 -14.0 -9.7 -13.1 -9.9 -8.8 -12.7 -16.2 -19.2 -19.5 -20.9 -16.9 650mb RH (%): 12 26 60 54 56 71 46 59 67 50 34 26 25 22 28 650mb Dir: 327 333 338 332 321 317 316 332 326 5 16 24 17 28 15 650mb Speed(kt): 15 15 16 18 19 21 22 18 17 13 16 17 18 14 10 600mb GPH (m): 4278 4279 4295 4306 4307 4319 4329 4331 4317 4327 4343 4355 4342 4346 4340 600mb Temp (C): -14.2 -12.6 -11.3 -11.4 -9.6 -8.7 -6.8 -6.6 -7.9 -7.0 -5.9 -4.9 -4.4 -4.7 -4.7 600mb Dewpt(C): -41.1 -20.3 -17.9 -18.4 -20.0 -15.7 -15.0 -13.2 -9.4 -11.0 -18.0 -23.4 -23.3 -20.6 -12.3 600mb RH (%): 9 53 58 56 43 57 52 59 89 74 38 22 22 28 55 600mb Dir: 321 336 339 333 335 328 324 324 324 354 7 14 13 21 358 600mb Speed(kt): 16 18 18 21 25 23 26 19 19 15 23 23 22 17 13 550mb GPH (m): 4931 4938 4956 4968 4973 4989 5002 5006 4989 5001 5020 5034 5024 5025 5019 550mb Temp (C): -18.6 -16.7 -15.9 -15.4 -13.8 -12.5 -10.9 -10.5 -11.8 -10.5 -8.6 -7.9 -7.6 -8.9 -9.7 550mb Dewpt(C): -44.0 -21.9 -25.1 -20.8 -20.6 -21.3 -17.7 -16.6 -13.5 -16.7 -24.9 -25.9 -23.8 -17.5 -12.5 550mb RH (%): 9 64 46 64 57 48 58 61 88 60 26 23 27 50 80 550mb Dir: 321 336 333 338 335 333 327 322 323 347 3 8 8 11 343 550mb Speed(kt): 17 27 19 28 34 28 30 25 20 22 31 29 27 17 15 500mb GPH (m): 5637 5647 5667 5680 5691 5710 5727 5731 5712 5728 5755 5768 5757 5755 5747 500mb Temp (C): -21.8 -21.4 -20.5 -20.2 -18.1 -17.0 -15.7 -15.7 -15.9 -14.1 -11.6 -12.2 -12.9 -14.3 -14.8 500mb Dewpt(C): -29.5 -28.7 -29.5 -28.8 -26.1 -23.0 -23.7 -22.0 -19.2 -23.0 -35.8 -30.1 -24.5 -19.4 -16.7 500mb RH (%): 50 53 45 47 50 60 51 59 76 48 12 22 38 66 85 500mb Dir: 324 332 329 334 335 332 333 320 327 346 6 2 354 354 334 500mb Speed(kt): 25 24 24 32 41 35 33 26 23 33 44 33 29 19 15 450mb GPH (m): 6405 6416 6439 6454 6470 6492 6513 6518 6498 6520 6551 6563 6551 6545 6535 450mb Temp (C): -26.3 -26.6 -25.6 -24.3 -23.1 -22.3 -21.5 -20.7 -20.5 -18.8 -18.3 -18.5 -19.3 -19.7 -20.3 450mb Dewpt(C): -29.0 -35.0 -35.5 -42.9 -27.5 -27.1 -28.3 -28.2 -25.4 -31.7 -43.5 -32.7 -25.7 -24.5 -23.9 450mb RH (%): 78 46 40 17 68 65 55 52 65 32 10 28 58 66 73 450mb Dir: 323 326 331 338 334 331 334 316 335 352 6 1 343 345 330 450mb Speed(kt): 27 23 29 44 50 39 38 27 27 49 50 37 28 18 18 400mb GPH (m): 7246 7257 7281 7303 7322 7345 7370 7379 7360 7385 7417 7429 7414 7410 7396 400mb Temp (C): -32.1 -32.3 -31.9 -28.9 -29.0 -28.9 -27.3 -26.2 -26.3 -25.8 -25.5 -25.7 -25.5 -25.0 -26.2 400mb Dewpt(C): -35.1 -39.4 -42.0 -49.6 -34.4 -32.3 -36.4 -35.8 -32.7 -45.5 -41.3 -40.7 -28.8 -33.2 -36.6 400mb RH (%): 75 51 37 13 60 73 43 41 56 15 22 24 74 47 38 400mb Dir: 328 329 330 342 334 333 340 301 342 356 1 358 342 342 324 400mb Speed(kt): 25 24 33 52 52 44 45 30 34 58 54 42 32 22 23 350mb GPH (m): 8172 8184 8210 8242 8262 8287 8317 8327 8310 8334 8367 8380 8367 8368 8348 350mb Temp (C): -40.2 -39.1 -38.3 -36.8 -36.6 -35.7 -34.9 -33.8 -33.9 -34.6 -34.0 -33.8 -32.3 -31.0 -33.1 350mb Dewpt(C): -43.9 -42.8 -48.6 -40.9 -41.7 -39.5 -48.6 -37.3 -41.7 -57.7 -48.1 -37.8 -37.9 -41.7 -37.4 350mb RH (%): 69 69 35 66 60 69 25 71 47 9 24 68 58 36 66 350mb Dir: 333 334 333 347 338 331 347 308 341 6 354 347 346 348 309 350mb Speed(kt): 18 23 41 57 51 49 51 37 36 68 58 43 39 25 24 300mb GPH (m): 9209 9221 9255 9288 9310 9338 9370 9388 9370 9392 9428 9446 9438 9441 9413 300mb Temp (C): -46.6 -47.5 -45.3 -45.9 -45.3 -44.7 -44.4 -43.0 -43.0 -43.3 -42.5 -40.9 -39.6 -39.7 -41.5 300mb Dewpt(C): -50.4 -52.4 -54.4 -51.7 -49.2 -48.3 -54.0 -46.4 -52.2 -56.2 -46.7 -44.3 -44.9 -45.3 -45.3 300mb RH (%): 66 59 37 54 66 69 35 70 37 24 65 71 59 57 68 300mb Dir: 313 333 341 343 338 333 347 322 346 1 349 344 345 333 301 300mb Speed(kt): 15 21 60 62 59 52 59 44 43 90 71 60 49 36 25 250mb GPH (m): 10395 10400 10446 10474 10501 10532 10564 10587 10572 10589 10633 10658 10660 10660 10625 250mb Temp (C): -54.6 -55.8 -54.3 -54.7 -54.2 -54.1 -54.5 -53.4 -52.4 -53.4 -51.9 -50.5 -49.1 -49.1 -50.5 250mb Dewpt(C): -60.2 -61.0 -59.6 -60.5 -58.8 -57.7 -61.4 -57.2 -57.8 -61.0 -56.7 -54.3 -54.5 -57.5 -60.9 250mb RH (%): 52 54 54 51 59 66 44 65 54 41 59 66 55 39 30 250mb Dir: 288 314 337 343 340 336 344 332 344 359 356 352 343 325 295 250mb Speed(kt): 15 24 66 70 65 53 71 54 53 92 84 72 55 44 38 200mb GPH (m): 11820 11817 11859 11884 11904 11929 11960 11992 11986 12001 12043 12078 12089 12089 12048 200mb Temp (C): -52.8 -54.4 -57.3 -57.9 -60.0 -61.2 -61.7 -61.2 -60.0 -59.1 -61.1 -60.5 -58.8 -59.1 -58.6 200mb Dewpt(C): -76.9 -79.8 -71.8 -69.5 -65.6 -68.9 -65.4 -65.5 -64.8 -67.5 -66.2 -66.3 -68.8 -67.4 -69.9 200mb RH (%): 5 4 16 24 51 38 63 59 55 35 54 49 29 36 25 200mb Dir: 287 324 335 338 338 331 340 339 346 356 1 2 348 319 298 200mb Speed(kt): 41 36 52 50 61 63 80 64 64 86 102 81 63 50 47 150mb GPH (m): 13671 13665 13689 13704 13702 13725 13750 13778 13775 13794 13816 13839 13853 13856 13840 150mb Temp (C): -54.5 -53.2 -54.5 -55.5 -57.6 -58.9 -58.5 -60.0 -60.7 -58.5 -60.1 -63.5 -67.2 -65.3 -61.8 150mb Dewpt(C): -84.4 -87.9 -88.8 -84.9 -83.9 -83.0 -82.5 -83.5 -79.6 -82.6 -82.0 -77.4 -74.7 -75.0 -75.2 150mb RH (%): 2 1 1 2 3 4 4 4 8 4 5 16 37 28 18 150mb Dir: 283 307 309 323 332 330 329 333 341 343 357 360 350 325 315 150mb Speed(kt): 33 29 29 33 40 39 41 45 55 54 59 59 55 34 36 100mb GPH (m): 16248 16257 16277 16288 16272 16294 16308 16324 16313 16331 16344 16353 16345 16358 16365 100mb Temp (C): -56.4 -56.1 -56.3 -56.1 -56.1 -55.6 -56.9 -57.5 -58.8 -58.9 -58.7 -58.8 -61.3 -60.4 -60.6 100mb Dewpt(C): -90.1 -89.9 -90.0 -89.9 -85.5 -89.6 -90.5 -90.9 -87.6 -91.9 -91.9 -91.9 -89.4 -88.6 -88.7 100mb RH (%): 1 1 1 1 2 1 1 1 2 1 1 1 2 2 2 100mb Dir: 297 300 309 298 307 319 327 326 335 342 344 357 11 352 336 100mb Speed(kt): 16 21 17 14 15 16 21 22 29 28 28 30 15 20 17