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Hard Freeze A complete technical report
describing the procedures used to produce and analyze these
figures is available in .pdf format. (1.5Mb size)
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| Map variable | Map level or type | Hours prior to start of event | |
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| Temperature | 500 mb | 0 12 24 36 48 60 72 84 | |
| 700 mb | 0 12 24 36 48 60 72 84 | ||
| 850 mb | 0 12 24 36 48 60 72 | ||
| standard deviation @ 700 | 96 | ||
| standard deviation @ 850 | 0 12 | ||
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| Height | 300 mb | 0 12 24 36 48 60 | |
| 500 mb | 0 12 24 36 48 60 72 | ||
| 700 mb | 0 12 24 36 48 60 72 | ||
| 850 mb | 0 12 24 36 | ||
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| Relative Humidity | 300 mb | 0 12 24 36 48 60 | |
| 850 mb | 0 12 24 36 48 60 | ||
| Specific Humidity | 300 mb | 0 | |
| 500 mb | 0 12 24 36 48 60 | ||
| 700 mb | 0 | ||
| 850 mb | 0 12 24 36 48 60 | ||
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| Surface Wind | U (zonal) component | 0 12 24 36 48 | |
| V (meridional) component | 0 12 24 36 48 60 72 84 | ||
| U standard deviation | 0 | ||
| V standard deviation | 0 12 | ||
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| U Wind | 300 mb | 0 12 24 36 48 60 | |
| 500 mb | 0 12 24 36 48 60 | ||
| 700 mb | 0 12 24 36 48 60 | ||
| 850 mb | 0 12 24 36 48 60 | ||
| standard deviation @ 500 | 0 12 24 36 | ||
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| V Wind | 300 mb | 0 12 24 36 48 60 72 84 | |
| 500 mb | 0 12 24 36 48 60 72 84 | ||
| 700 mb | 0 12 24 36 48 60 72 84 | ||
| 850 mb | 0 12 24 36 48 60 72 84 | ||
| standard deviation @ 850 | 0 12 24 | ||
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| Omega | 300 mb | 0 12 24 | |
| 500 mb | 0 12 24 | ||
| 700 mb | 0 12 24 36 | ||
| 850 mb | 0 12 24 36 | ||
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| Tropopause | Pressure elevation | 0 12 24 36 48 60 72 84 96 | |
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