Basinwide Ag-Burn Acreage Allocation - Sacramento Valley Air Basin
| Date: 26-May-12 | Local Time: 07:29 AM | Meteorologist: Lancero |
| Ag Burn Decision Above 3000 ft: Permissive Burn Day (Good) | |||
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| A.M. Stability (°F) = -4 | Wind Speed (mph) | = | 9 |
| 500 millibar height (decameters) = 555 | Average Rainfall (in) | = | 0.01 |
| Meteorological (MET) Factor | = | 0.85 | |
| Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5) | = | 5.0 | |
| Allocation Equation: | = | 14623 | |
| ARB REVISED Basinwide Allocation | _________________________________________ | = | 4000 |
| Revised Allocation | _________________________________________ | = | 4000 |
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| District | Yesterday's 24-Hr Avg PM2.5 |
Yesterday's PM2.5 (0-6 PST) |
Reduction Factor |
Proration | Final Allocation (Acres) |
Avg PM2.5 (0-6 PST) |
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| Conc | Stn | |||||||
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| Colusa | 5 | 5 | 1 | 0.17 | 540 | 7 | COL | |
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| Sutter | 4 | 4 | 1 | 0.17 | 540 | 4 | YUB | |
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| Butte | 2 | 2 | 1 | 0.17 | 540 | 1 | CIC-GRD | |
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| Yolo/Solano | 4 | 5 | 1 | 0.15 | 500 | 5 | DAV-WOO | |
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| Glenn | 2 | 1 | 1 | 0.13 | 460 | 1 | WLW | |
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| Sacramento | 2 | 2 | 1 | 0.09 | 380 | 4 | SAC | |
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| Yuba | 4 | 4 | 1 | 0.07 | 340 | 4 | YUB | |
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| Placer | 4 | 3 | 1 | 0.05 | 300 | 6 | ROS | |
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| Tehama | 2 | 1 | 1 | 200 acres unless reduced by PM |
200 | 1 | WLW | |
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| Shasta | 8 | 4 | 1 | 200 | 9 | AND | ||
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| When any district's 0-6 am average PM2.5 is >= 27 ug/m
increasing concentrations will result in a reduction in allocation acres (e.g. 27-28 : 20%, 29-30 : 40%, 31-32 : 60%, 33-34 : 80%) |
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| ARB Comments | ||||||||
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| Cautionary Comments: | ||||||||
| Permissive Burn Day The upper low that brought some nice change yesterday and last night has moved over NV and will fill and shift towards the east. So expect much lighter winds and warmer temps in the low 70s. Still some shower and t-storm activity expected in the Sierra foothills and higher elev by aftn. Valley winds will be light and variable 3-5mph, then light southerly 5-15mph most of the day. Delta winds slightly stronger 10-20mph gusting 25mph by afternoon. Mixing hgts will remain well above 3000ft+ early. 24Hour Outlook Permissive Burn Day Flat ridge building for sunday, winds southerly 5-15mph, temps warming in mid 70s, and even warmer on Memorial Day reaching low 80s again. |
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| Mixing Height Discussion: | ||||||||
| Valley: Mixing heights will reach above 3000 feet by mid morning. |
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| Winds: | ||||||||
| Valley L+V 3-5mph most of the morning, then light southerly 5-15mph by noon. Delta: Stronger SW 10-20mph gusting 25mph by afternoon. |
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