Station ID: KPDX Lat: 45.59 Long: -122.60 NAM Model Run: 12Z DEC 21, 2025 Forecast Hours: 0hr 6hr 12hr 18hr 24hr 30hr 36hr 42hr 48hr 54hr 60hr 66hr 72hr 78hr 84hr Sfc Prs(mb): 983.9 980.7 979.6 983.2 985.8 986.5 984.2 985.6 986.0 985.8 984.4 982.0 975.7 973.7 980.1 Mean SLP (mb): 1008.8 1005.4 1004.1 1007.9 1010.6 1011.4 1008.8 1010.4 1010.9 1010.6 1009.2 1006.8 1000.4 998.5 1005.0 2m agl Tmp (F): 40.8 41.1 44.2 42.8 41.4 41.8 44.4 41.7 40.8 41.8 42.1 39.2 39.3 38.6 37.5 2m agl Dewpt(F): 36.0 36.3 41.2 42.0 40.2 39.2 38.2 40.6 39.8 39.7 38.6 36.2 33.7 35.7 36.6 2m agl RH (%): 83 83 89 97 96 91 78 96 96 92 87 89 80 89 96 10m agl Dir: 80 90 158 185 160 169 177 203 173 164 154 49 67 42 181 10m agl Spd(kt): 3 6 4 3 4 8 10 9 5 5 2 4 8 3 2 6hr Precip (in): 0.00 0.00 0.03 0.13 0.04 0.02 0.01 0.11 0.11 0.03 0.01 0.00 0.00 0.05 0.10 AccumPrecip(in): 0.00 0.00 0.03 0.16 0.20 0.22 0.23 0.34 0.46 0.48 0.49 0.50 0.50 0.55 0.65 Sfc CAPE (J/kg): 0.0 0.0 4.5 67.2 18.4 13.6 5.9 7.8 28.5 30.2 37.2 1.4 0.0 0.0 10.7 Sfc CINH (J/kg): 0.0 0.0 -0.9 0.0 -1.0 -9.8 -14.7 -1.8 -0.4 -0.2 -0.1 0.0 0.0 0.0 0.0 0-3km Hel(J/kg): 170.1 141.2 142.1 11.4 163.3 217.0 302.9 146.1 149.6 179.3 129.4 215.0 124.6 272.6 49.7 Precip H20 (in): 0.44 0.47 0.60 0.47 0.49 0.40 0.47 0.50 0.45 0.43 0.42 0.43 0.59 0.62 0.44 Lifted Index(C): 9.4 8.2 3.2 3.4 6.0 6.1 6.5 8.3 9.1 8.8 9.1 11.6 7.3 5.3 5.8 700mb VV(-ub/s): -0.4 -0.1 6.2 6.6 6.8 4.3 12.4 9.9 3.9 3.0 0.0 0.0 -4.2 3.8 -4.0 Thk1000-500mb(m)5393.1 5398.8 5378.7 5323.2 5317.9 5319.6 5333.5 5336.9 5336.6 5342.3 5347.3 5371.4 5400.9 5398.3 5332.9 Thk1000-850mb(m)1315.8 1321.5 1324.1 1314.0 1309.0 1309.2 1316.5 1310.8 1307.4 1308.4 1309.6 1312.0 1314.7 1309.6 1302.0 Thk850-700mb(m):1527.7 1536.2 1533.4 1513.9 1513.0 1508.6 1516.3 1514.5 1509.8 1511.0 1510.2 1522.6 1535.9 1535.0 1519.6 SWEAT Index: 93.4 88.6 190.7 147.9 149.3 198.9 226.9 161.2 140.1 142.2 85.9 82.1 87.8 80.1 74.1 Total Totals Idx 41.0 42.1 50.7 51.1 48.3 48.3 46.7 43.9 41.7 40.7 41.0 37.0 42.1 46.4 48.8 Frz Hgt(ft amsl) 4048 5252 5047 3610 3140 3385 3779 3259 2912 2950 3155 3504 4613 4074 2185 0WetBlbHgt(amsl) 3565 3680 4977 3428 3030 2792 3396 3199 2849 2881 2745 2667 3793 3257 2109 Equil Prs (mb): 984 981 980 690 770 700 768 735 737 738 732 982 976 974 980 Equil Hgt(amsl): 26 26 26 9834 7132 9553 7162 8306 8243 8207 8384 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 0.00 Conv Wind Gust: 29.2 37.1 27.8 26.3 24.9 31.0 33.6 26.7 25.4 24.8 26.4 31.4 35.7 35.2 20.0 Showalter Index: 9.5 8.4 3.4 4.7 6.3 6.4 6.9 8.4 9.9 10.4 10.2 11.8 8.3 6.1 6.2 Cap Strength(C):-999.9 -999.9 -999.9 0.0 0.0 0.4 0.2 0.0 -0.6 -0.6 0.0 -999.9 -999.9 -999.9 0.0 Storm Dir (deg): 269 268 258 256 260 250 250 258 254 248 248 234 206 222 276 Storm Spd (kts): 22 20 26 29 25 30 35 31 27 26 23 20 19 23 18 2m HeatIndex(F): 41 41 44 43 41 42 44 42 41 42 42 39 39 39 37 2m WindChill(F): 41 41 44 43 41 42 44 42 41 42 42 36 33 36 37 1000mb GPH (m): 71 44 34 64 86 93 72 85 88 86 75 55 4 -12 40 950mb GPH (m): 491 464 454 484 504 510 493 503 506 504 493 474 420 403 455 950mb Temp (C): 5.0 5.8 5.0 3.7 3.3 2.7 4.9 3.5 3.1 3.1 3.3 4.0 3.3 2.5 0.8 950mb Dewpt(C): 1.5 0.3 4.7 3.3 3.0 2.4 1.9 3.2 2.8 2.6 1.9 -0.1 0.1 0.6 0.6 950mb RH (%): 78 68 98 97 98 98 81 98 98 97 90 74 79 87 99 950mb Dir: 160 116 180 257 180 175 183 208 192 184 165 70 79 60 201 950mb Speed(kt): 5 9 7 1 11 16 19 20 13 12 5 8 15 5 5 900mb GPH (m): 929 905 896 921 940 946 931 939 941 940 929 910 858 838 887 900mb Temp (C): 1.9 3.2 4.1 1.1 0.1 0.6 1.5 0.3 -0.4 -0.3 0.2 0.9 2.5 1.3 -0.9 900mb Dewpt(C): 0.0 -2.2 3.8 0.7 -0.3 -2.4 -0.1 0.1 -0.7 -0.6 -1.7 -2.5 -1.0 -1.0 -1.0 900mb RH (%): 87 68 98 98 97 80 89 99 98 98 87 78 77 84 99 900mb Dir: 208 185 224 262 205 200 199 219 211 200 211 86 101 104 253 900mb Speed(kt): 13 9 27 5 12 26 34 34 15 16 9 7 26 16 7 850mb GPH (m): 1387 1366 1358 1378 1395 1402 1389 1395 1395 1395 1385 1367 1318 1297 1342 850mb Temp (C): -1.0 1.2 1.1 -1.7 -2.7 -2.7 -1.6 -2.3 -3.2 -2.9 -3.1 -1.6 0.4 -0.2 -2.8 850mb Dewpt(C): -2.8 -3.8 0.9 -3.7 -2.8 -4.2 -3.2 -2.5 -3.8 -5.6 -4.5 -4.7 -1.4 -0.5 -3.5 850mb RH (%): 88 69 98 86 99 89 89 98 95 81 90 80 88 98 95 850mb Dir: 207 211 229 261 231 212 211 232 224 214 222 150 116 188 299 850mb Speed(kt): 14 9 28 15 20 32 45 31 21 21 11 7 13 12 12 800mb GPH (m): 1868 1851 1843 1857 1874 1880 1869 1874 1873 1872 1861 1847 1803 1781 1821 800mb Temp (C): -3.9 -1.3 -1.9 -5.3 -5.6 -5.8 -5.1 -5.1 -6.2 -6.2 -6.4 -4.3 -1.6 -2.2 -4.8 800mb Dewpt(C): -4.9 -8.2 -2.2 -13.6 -6.0 -7.4 -5.4 -5.4 -7.1 -12.1 -8.1 -6.9 -2.6 -2.4 -7.1 800mb RH (%): 93 60 98 52 97 89 98 98 94 63 87 82 93 98 84 800mb Dir: 223 236 219 265 235 214 217 233 225 216 221 178 115 186 295 800mb Speed(kt): 15 12 28 21 26 37 51 31 27 25 14 13 5 14 17 750mb GPH (m): 2376 2363 2353 2360 2377 2382 2373 2378 2374 2373 2363 2353 2314 2291 2326 750mb Temp (C): -5.5 -4.6 -5.2 -8.3 -8.4 -9.4 -7.9 -8.5 -9.3 -9.2 -9.4 -7.0 -4.0 -4.7 -6.9 750mb Dewpt(C): -10.0 -10.8 -5.4 -9.0 -9.1 -11.2 -8.1 -8.8 -9.9 -12.5 -10.9 -10.5 -6.0 -5.0 -9.8 750mb RH (%): 70 62 99 94 95 87 99 98 95 77 89 76 86 97 80 750mb Dir: 232 247 220 240 225 215 221 233 223 220 218 190 171 183 261 750mb Speed(kt): 19 15 25 31 31 41 49 35 39 32 22 20 9 22 17 700mb GPH (m): 2915 2902 2891 2892 2908 2911 2905 2910 2905 2906 2895 2890 2854 2832 2862 700mb Temp (C): -7.1 -7.7 -8.9 -11.2 -12.0 -12.6 -11.6 -11.9 -11.7 -10.7 -11.3 -7.6 -8.2 -6.4 -9.9 700mb Dewpt(C): -28.3 -14.3 -9.1 -11.6 -12.5 -21.3 -11.8 -12.2 -12.7 -11.2 -12.8 -23.4 -11.6 -6.8 -13.0 700mb RH (%): 17 59 98 97 96 49 98 97 93 96 89 27 77 97 78 700mb Dir: 237 249 232 227 232 215 226 226 216 219 221 204 176 190 256 700mb Speed(kt): 26 22 29 53 43 42 45 37 42 42 35 28 10 34 25 650mb GPH (m): 3489 3475 3460 3458 3471 3474 3469 3474 3468 3472 3462 3465 3426 3409 3429 650mb Temp (C): -10.0 -10.6 -13.1 -14.5 -16.0 -14.3 -15.7 -15.2 -14.7 -13.1 -11.8 -9.8 -10.7 -9.1 -13.2 650mb Dewpt(C): -39.6 -24.5 -15.4 -15.4 -17.5 -47.1 -16.6 -15.3 -24.1 -29.2 -31.9 -36.8 -12.4 -10.6 -17.9 650mb RH (%): 7 31 83 93 89 5 92 100 46 25 18 10 87 89 68 650mb Dir: 250 247 238 219 226 223 226 218 224 224 217 210 166 196 249 650mb Speed(kt): 34 31 40 62 52 44 47 41 50 44 43 38 20 46 32 600mb GPH (m): 4102 4085 4066 4058 4068 4076 4068 4074 4074 4079 4070 4075 4039 4024 4034 600mb Temp (C): -13.1 -14.3 -16.7 -19.6 -20.1 -17.8 -18.4 -17.7 -15.5 -15.8 -15.2 -15.6 -13.3 -12.5 -16.9 600mb Dewpt(C): -28.3 -25.7 -27.2 -23.2 -23.3 -37.1 -34.2 -37.5 -41.5 -47.3 -41.4 -33.2 -15.0 -16.6 -25.4 600mb RH (%): 27 38 40 74 76 17 24 17 9 5 9 21 87 72 48 600mb Dir: 251 241 234 214 223 228 225 228 233 222 218 210 183 199 238 600mb Speed(kt): 50 39 49 63 51 50 57 58 50 48 48 39 34 48 41 550mb GPH (m): 4759 4739 4715 4699 4711 4721 4712 4722 4725 4730 4722 4724 4697 4682 4681 550mb Temp (C): -17.5 -18.7 -20.6 -23.7 -22.0 -22.6 -22.3 -20.1 -19.6 -19.7 -19.4 -20.3 -17.1 -17.6 -21.9 550mb Dewpt(C): -26.2 -27.8 -37.2 -35.4 -41.0 -34.3 -49.2 -47.3 -35.9 -48.6 -50.5 -23.9 -19.0 -21.5 -37.3 550mb RH (%): 47 45 22 34 17 34 7 8 23 6 5 73 85 72 24 550mb Dir: 242 243 229 218 239 229 227 233 231 220 220 218 197 201 237 550mb Speed(kt): 62 46 54 66 45 56 64 67 56 53 55 45 53 50 48 500mb GPH (m): 5465 5443 5413 5388 5404 5412 5406 5421 5425 5429 5422 5427 5404 5386 5373 500mb Temp (C): -22.4 -22.3 -24.4 -28.3 -26.9 -27.6 -25.8 -24.3 -24.3 -24.6 -24.3 -21.6 -21.6 -23.6 -27.5 500mb Dewpt(C): -47.1 -28.7 -40.6 -43.2 -43.9 -36.4 -60.7 -44.1 -51.7 -54.3 -47.6 -24.1 -23.9 -26.4 -47.6 500mb RH (%): 9 57 22 24 20 44 3 15 7 5 11 81 81 78 14 500mb Dir: 241 244 230 222 243 232 229 232 229 222 220 210 200 202 234 500mb Speed(kt): 65 70 65 76 58 66 74 75 62 58 65 67 62 55 49 450mb GPH (m): 6233 6214 6174 6136 6155 6163 6162 6180 6184 6187 6182 6194 6172 6146 6121 450mb Temp (C): -25.5 -24.6 -28.9 -32.7 -32.8 -31.7 -30.3 -29.7 -29.7 -29.2 -28.8 -27.1 -27.5 -29.0 -33.8 450mb Dewpt(C): -43.6 -27.4 -34.1 -52.2 -45.4 -48.8 -61.2 -53.6 -58.2 -36.3 -38.9 -29.9 -30.1 -32.0 -51.3 450mb RH (%): 18 78 61 14 29 18 4 9 5 51 38 78 79 76 17 450mb Dir: 244 232 230 225 241 234 230 230 225 221 216 207 206 195 235 450mb Speed(kt): 82 85 81 88 68 78 85 78 73 76 87 70 73 72 49 400mb GPH (m): 7081 7063 7006 6956 6971 6987 6989 7007 7013 7021 7013 7030 7007 6980 6934 400mb Temp (C): -28.9 -30.0 -34.0 -36.9 -39.2 -36.6 -36.1 -36.4 -34.9 -33.4 -35.2 -33.9 -34.3 -33.8 -39.9 400mb Dewpt(C): -40.3 -32.8 -50.6 -60.4 -51.9 -59.6 -62.4 -53.4 -57.5 -36.7 -41.0 -37.0 -37.4 -37.0 -56.1 400mb RH (%): 34 77 19 8 26 8 6 17 9 73 57 74 74 74 18 400mb Dir: 243 225 229 228 241 234 231 230 222 214 217 204 207 189 235 400mb Speed(kt): 100 95 94 100 79 91 92 81 88 93 86 72 82 84 55 350mb GPH (m): 8024 7997 7930 7871 7876 7899 7902 7920 7934 7944 7935 7949 7925 7900 7834 350mb Temp (C): -35.0 -37.5 -39.5 -41.3 -43.5 -42.6 -42.7 -42.4 -39.6 -40.6 -39.4 -41.7 -41.8 -41.4 -45.1 350mb Dewpt(C): -38.7 -40.8 -55.0 -66.5 -60.6 -64.0 -65.3 -65.7 -44.2 -44.3 -43.0 -45.4 -45.4 -45.0 -64.7 350mb RH (%): 70 72 19 6 15 9 8 7 63 69 69 69 69 69 11 350mb Dir: 237 226 229 230 240 234 233 229 222 213 217 200 194 170 220 350mb Speed(kt): 116 104 105 109 91 105 94 86 111 98 110 84 88 89 73 300mb GPH (m): 9077 9042 8964 8905 8902 8925 8928 8948 8969 8971 8968 8975 8949 8926 8854 300mb Temp (C): -44.6 -46.5 -48.6 -46.8 -47.9 -48.3 -48.6 -48.3 -48.9 -50.2 -49.3 -50.5 -50.9 -49.5 -47.7 300mb Dewpt(C): -48.3 -50.1 -52.1 -70.5 -67.5 -68.5 -66.3 -60.9 -52.2 -54.0 -53.0 -54.2 -54.7 -60.1 -67.4 300mb RH (%): 68 68 68 6 10 9 13 24 69 66 66 66 66 30 10 300mb Dir: 239 227 229 233 238 233 233 229 226 219 216 211 199 191 212 300mb Speed(kt): 121 122 107 110 99 105 108 116 129 111 113 92 120 115 89 250mb GPH (m): 10271 10228 10145 10099 10093 10110 10111 10129 10139 10137 10135 10136 10111 10101 10047 250mb Temp (C): -54.5 -54.8 -52.4 -50.3 -51.0 -52.3 -52.9 -54.1 -56.8 -56.5 -57.4 -59.4 -58.3 -55.3 -52.0 250mb Dewpt(C): -58.8 -58.8 -67.2 -74.9 -72.7 -71.4 -70.5 -70.0 -64.1 -64.9 -64.4 -64.5 -64.1 -69.5 -71.4 250mb RH (%): 61 63 17 5 7 10 12 14 41 37 43 54 49 18 9 250mb Dir: 242 235 232 235 238 235 233 231 228 225 225 220 202 197 208 250mb Speed(kt): 132 134 106 105 99 101 108 106 113 100 105 100 122 122 95 200mb GPH (m): 11670 11644 11590 11554 11546 11552 11549 11557 11554 11552 11548 11543 11514 11515 11481 200mb Temp (C): -59.4 -54.8 -51.1 -50.0 -50.3 -51.8 -53.0 -54.3 -55.5 -56.5 -55.3 -54.7 -55.4 -57.1 -54.0 200mb Dewpt(C): -70.5 -76.0 -80.5 -81.0 -78.3 -77.6 -77.2 -76.9 -77.4 -75.4 -77.3 -78.5 -80.5 -76.3 -79.8 200mb RH (%): 25 7 2 2 3 4 5 6 6 9 6 5 4 9 4 200mb Dir: 249 239 238 240 240 236 234 228 226 221 221 208 219 204 206 200mb Speed(kt): 120 103 97 91 87 90 88 85 92 83 82 68 82 83 75 150mb GPH (m): 13496 13487 13460 13431 13414 13413 13401 13407 13394 13391 13390 13381 13358 13347 13329 150mb Temp (C): -54.4 -53.8 -51.2 -50.3 -52.2 -52.5 -53.5 -52.8 -54.3 -53.9 -54.0 -55.1 -53.2 -53.4 -53.8 150mb Dewpt(C): -84.2 -88.6 -86.4 -85.8 -87.2 -87.4 -88.1 -90.1 -88.7 -88.7 -88.9 -84.7 -88.2 -88.0 -84.0 150mb RH (%): 2 1 1 1 1 1 1 1 1 1 1 2 1 1 2 150mb Dir: 259 248 245 241 240 240 233 234 233 223 224 217 213 208 205 150mb Speed(kt): 93 88 83 71 75 74 75 74 67 69 64 64 60 55 57 100mb GPH (m): 16081 16081 16068 16050 16007 16004 15984 15999 15974 15970 15961 15957 15948 15947 15933 100mb Temp (C): -56.6 -56.1 -55.7 -55.5 -56.9 -56.4 -56.3 -56.5 -57.1 -56.9 -58.2 -56.1 -56.0 -55.6 -54.3 100mb Dewpt(C): -85.9 -85.5 -85.2 -85.1 -80.0 -85.8 -85.7 -85.8 -86.3 -90.5 -87.1 -85.5 -85.4 -89.6 -84.1 100mb RH (%): 2 2 2 2 0 2 2 2 2 1 2 2 2 1 2 100mb Dir: 261 254 244 233 239 242 245 240 234 231 233 231 228 217 218 100mb Speed(kt): 64 65 64 61 63 63 63 56 58 53 64 55 50 45 44