STEP 3:
700mb vertical velocity should show weak lift or subsidence. Again,
you can use the FOUS60 700 V Vel field as a tool for step 2.
FOUS60
Station: MSP
Model: ETA
Run Time: 12Z 27JAN02
| Valid | Precip Accum | Lyr1 RH | Lyr2 RH | Lyr3 RH | 700 V Vel | LI | SFC Prs | Bndry Lyr Wind | 1000-500 Thickness | Lry 1 Temp | Lyr 3 Temp | Lyr 5 Temp |
| 27/12Z | --- | 69% | 26% | 63% | 1.2 | 5 | 1007 | 2413 | 5530 | 3 | 9 | 6 |
| 27/18Z | 0.00 | 82% | 19% | 59% | 1.9 | 9 | 1008 | 2511 | 5530 | 0 | 10 | 6 |
| 28/00Z | 0.00 | 97% | 39% | 61% | 1.0 | 10 | 1010 | 3013 | 5490 | 0 | 3 | 4 |
| 28/06Z | 0.00 | 98% | 42% | 52% | 2.1 | 14 | 1015 | 0118 | 5430 | -3 | -4 | 0 |
| 28/12Z | 0.00 | 95% | 60% | 55% | -0.3 | 13 | 1019 | 3617 | 5380 | -7 | -5 | -1 |
| 28/18Z | 0.00 | 89% | 69% | 41% | -0.9 | 15 | 1020 | 0113 | 5350 | -9 | -7 | -1 |
| 29/00Z | 0.00 | 89% | 68% | 48% | 0.9 | 17 | 1019 | 0117 | 5320 | -9 | -9 | -4 |
| 29/06Z | 0.01 | 86% | 84% | 25% | -1.6 | 17 | 1023 | 0117 | 5260 | -13 | -12 | -9 |
| 29/12Z | 0.02 | 84% | 82% | 27% | -3.0 | 16 | 1024 | 0115 | 5230 | -16 | -13 | -11 |
| 29/18Z | 0.05 | 83% | 77% | 14% | 2.8 | 14 | 1028 | 3510 | 5190 | -15 | -15 | -13 |
| 30/00Z | 0.02 | 84% | 55% | 16% | -0.5 | 12 | 1028 | 3308 | 5170 | -14 | -14 | -13 |
FOUS60
Station: MSP
Model: NGM
Run Time: 12Z 27JAN02
| Valid | Precip Accum | Lyr1 RH | Lyr2 RH | Lyr3 RH | 700 VV | LI | SFC Prs | Bndry Lyr Wind | 1000-500 Thickness | Lry 1 Temp | Lyr 3 Temp | Lyr 5 Temp |
| 27/12Z | --- | 65% | 29% | 67% | -0.4 | 7 | 1008 | 22008 | 5530 | 5 | 9 | 6 |
| 27/18Z | 0.00 | 69% | 20% | 68% | 1.0 | 9 | 1007 | 2610 | 5520 | 1 | 10 | 6 |
| 28/00Z | 0.00 | 82% | 31% | 94% | 0.0 | 12 | 1012 | 3418 | 5480 | 0 | 3 | 4 |
| 28/06Z | 0.00 | 96% | 40% | 76% | 0.4 | 13 | 1017 | 0117 | 5430 | -6 | -2 | 2 |
| 28/12Z | 0.00 | 95% | 57% | 59% | -0.8 | 13 | 1021 | 0312 | 5370 | -10 | -5 | 0 |
| 28/18Z | 0.00 | 86% | 73% | 59% | 1.3 | 13 | 1022 | 0407 | 5340 | -10 | -8 | 0 |
| 29/00Z | 0.00 | 95% | 70% | 71% | 2.0 | 14 | 1018 | 0410 | 5340 | -8 | -11 | -1 |
| 29/06Z | 0.00 | 95% | 68% | 29% | -0.3 | 16 | 1020 | 0410 | 5290 | -9 | -14 | -5 |
| 29/12Z | 0.00 | 96% | 83% | 23% | 0.0 | 14 | 1020 | 0309 | 5240 | -10 | -16 | -5 |
You can also take a look at the 700mb and 850mb vertical velocity model maps to look for weak lift or subsidence.
These are the 700mb vertical velocity maps from the 28JAN02 12Z ETA model for 12Z and 18Z on January 28, 2002 and 00Z and 06Z on January 29th, 2002.
These are the 850mb vertical velocity maps from the 28JAN02 12Z ETA model for 12Z and 18Z on January 28, 2002 and 00Z and 06Z on January 29th, 2002.
