Basinwide Ag-Burn Acreage Allocation - Sacramento Valley Air Basin
| Date: 11-Dec-19 | Local Time: 07:21 AM | Meteorologist: Chen |
| Ag Burn Decision Above 3000 ft: Permissive Burn Day (Good) | |||
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| A.M. Stability (°F) = -5 | Wind Speed (mph) | = | 5 |
| 500 millibar height (decameters) = 569 | Average Rainfall (in) | = | 0.12 |
| Meteorological (MET) Factor | = | 0.65 | |
| Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5) | = | 14.0 | |
| Allocation Equation: | = | 7699 | |
| ARB REVISED Basinwide Allocation | _________________________________________ | = | 2000 |
| Revised Allocation | _________________________________________ | = | 2000 |
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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 | 9 | 6 | 1 | 0.17 | 200 | 16 | COL | |||||||||||
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| Sutter | 13 | 18 | 1 | 0.17 | 200 | 14 | YUB | |||||||||||
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| Butte | 16 | 18 | 1 | 0.17 | 200 | 10 | CIC-GRD | |||||||||||
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| Yolo/Solano | 10 | 4 | 1 | 0.15 | 200 | 19 | DAV-WOO | |||||||||||
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| Glenn | 11 | 11 | 1 | 0.13 | 200 | 11 | WLW | |||||||||||
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| Sacramento | 10 | 8 | 1 | 0.09 | 200 | 12 | SAC | |||||||||||
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| Yuba | 13 | 18 | 1 | 0.07 | 200 | 14 | YUB | |||||||||||
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| Placer | 13 | 10 | 1 | 0.05 | 200 | 15 | ROS | |||||||||||
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| Tehama | 14 | 9 | 1 | 200 acres unless reduced by PM |
200 | 15 | RBL | |||||||||||
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| Shasta | - | - | 1 | 200 | - | 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: | ||||||||||||||||||
| *** WET Permissive Burn Day *** A short upper-level disturbance passed through last night leaving some showers behind. Areas of dense fog have developed again in the morning, followed by cloudy conditions and intermittent showers peppering Northern California for the next few days. Poor dispersion with low mixing and calm winds throughout the valley. 24hr Outlook *** WET Permissive Burn Day *** Remaining damp with similar conditions of mostly cloudy skies and periods of rain and showers, mainly in the northern valley. Another system Friday night into Saturday, likely with more widespread precip. Drier conditions are expected for Sunday and the first half of the week next week with cooler nights. |
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| Mixing Height Discussion: | ||||||||||||||||||
| Valley: Mixing heights near 1000-1500 feet. | ||||||||||||||||||
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| Winds: | ||||||||||||||||||
| Valley: L/V 3-6 mph early, S/SW 5-10 mph in the afternoon. Delta: L/V 3-6 mph, S/SW 5-10 mph in late afternoon. |
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