Basinwide Ag-Burn Acreage Allocation & Complaints - Sacramento Valley Air Basin
| Date: 21-Sep-20 | Local Time: 06:46 AM | Meteorologist: Mims |
| Ag Burn Decision Above 3000 ft: Marginal Burn Day | |||
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| A.M. Stability (°F) = 13 | Wind Speed (mph) | = | 7 |
| 500 millibar height (decameters) = 584 | Average Rainfall (in) | = | 0 |
| Meteorological (MET) Factor | = | ||
| Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5) | = | 43.2 | |
| Allocation Equation: | = | ||
| ARB/SMPC REVISED Basinwide Allocation | _________________________________________ | = | 0 |
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| District | Yesterday's 24-Hr Avg PM2.5 |
Yesterday's PM2.5 (0-6 PST) |
Reduction Factor |
Yesterday's PM2.5 MAX |
Hour of Yesterday's MAX |
Avg PM2.5 (0-6 PST) |
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| Conc | Stn | |||||||||||||||||
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| Colusa | 42 | 28 | 0 | 73 | 13 | 47 | COL | |||||||||||
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| Butte | 46 | 25 | 0 | 88 | 17 | 53 | CIC-GRD | |||||||||||
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| Glenn | 51 | 57 | 0 | 77 | 19 | 59 | WLW | |||||||||||
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| Placer | 38 | 30 | 0 | 98 | 19 | 35 | ROS | |||||||||||
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| Sacramento | 41 | 29 | 0 | 92 | 17 | 39 | SAC | |||||||||||
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| Sutter | 37 | 35 | 0 | 53 | 22 | 43 | YUB | |||||||||||
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| Yolo/Solano | 25 | 21 | 0.4 | 39 | 8 | 32 | DAV-WOO | |||||||||||
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| Yuba | 37 | 35 | 0 | 53 | 22 | 43 | YUB | |||||||||||
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| Tehama | - | - | 1 | - | - | - | RBL | |||||||||||
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| Shasta | 23 | 15 | 0 | 50 | 21 | 42 | 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: | ||||||||||||||||||
| *** No Burn Day *** Not much change early as we close out summer 2020. Light winds and weak ridging continues the high PM 2.5 numbers and no burn conditions. Winds shift to an onshore gradient this afternoon, pushing some of the smoke eastward. But, the hazy conditions with impacts close to the fires should continue since we have so much smoke in the valley to start with. 24hr Outlook *** No Burn Day*** Even more of a delta influence tomorrow as another weak trough moves towards California. This is part of a larger system hat will bring some much needed rain north of the region later. Not expecting much in the valley, but any moisture should help firefighters. The warm up that follows by this weekend should start our fall, north winds season. |
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| Mixing Height Discussion: | ||||||||||||||||||
| Valley: Mixing heights will reach 2500 feet. |
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| Winds: | ||||||||||||||||||
| Valley: Light and Variable to 5 mph early, the Southerly 5-15 mph. Delta: Southwesterly 5-15 mph, gusting to 20 mph by afternoon. |
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| Complaints: | Col | Sut | But | Yol | Gle | Sac | Yub | Pla | Teh | Sha | Total |
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| 18-Sep-20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 19-Sep-20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 20-Sep-20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
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| Data Table | |
| 21-Sep-20 | Date |
| 06:46 AM | Local Time |
| Mims | Meteorologist |
| Marginal Burn Day | Ag Burn Decision Above 3000 ft |
| 13 | A.M. Stability (°F) |
| 7 | Wind Speed (mph) |
| 584 | 500 millibar height (decameters) |
| 0 | Average Rainfall (in) |
| Meteorological (MET) Factor | |
| 43.2 | Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5) |
| Allocation Equation: | |
| 0 | ARB/CCO REVISED Basinwide Allocation |