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| Merry Lea Home Page | Maple Sugaring Home Page | Maple Classroom |
Copyright, L. Yoder 1999
Make your own forecast for the sap flow you can expect when your class visits. Inform your classmates about what to expect.
| As you know, the right weather conditions must be present to provide us with a strong sap flow. Select the combination of weather conditions from the table below that YOU think will produce a sap flow. |
What do
your friends think? |
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Now, check the weather report for tomorrow, record the information, and then return to this page. |
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Representative temperatures are listed across the top. Conditions regarding cloud cover and precipitation are listed along the side. Find the square that best corresponds to the current temperature and weather conditions. Make your prediction as to whether or not there will be a run. Check your prediction by clicking on "Sap Run" or "No Run". The correct answer will be listed at the top of your screen.
High Today Low Last Night |
25F (-4C) 12 (-11C) |
34 (1C) 15 -(9C) |
45 (7C) 20 (-7C) |
60 (16C) 25 (-4C) |
56 (13C) 35 (2C) |
67 (19C) 45 (7C) |
| Sunny | ||||||
| Cloudy | ||||||
| Rain | Too cold to rain | |||||
| Snow | Too warm for snow | Too warm for snow | Too warm for snow | Too warm for snow |
| You're Right! There will be a Run 1 | Return to Table | Sunny.Lo 20-Hi 45. Temperatures below freezing followed by a warm-up with sunny conditions will create a run. Temperatures are bit on the cool side, howver. |
| You're Right. There will be no sap flow today 2 | Return to Table | Sunny. Lo 12- Hi 25. It's too cold today to expect any sap even though there is sunshine. We'll need temperatures above freezing to cause a run. |
| Sorry. Call the Crew. 3 You will have sap today. | Return to Table | Sunny. Lo 20-Hi 45. 45 may seem a bit chilly for a day-time high, but with the sunshine it is warm enough to create a run |
| Sorry. There will be no sap today 4 | Return to Table | Sunny. Lo12-Hi 25. It's too cold today to expect any sap even though there is sunshine. We'll need temperatures above freezing to cause a run. |
| Sorry. There will be no sap today5 | Return to Table | Cloudy. Lo 15-Hi 34.Temperatures are above freezing but not by much. The cloudy conditions prevent any warming by the sun. Call off the gathering crew. |
| You're Right. There will be no sap flow today 6 | Return to Table | Cloudy. Lo 15-Hi 34.Temperatures are above freezing but not by much. The cloudy conditions prevent any warming by the sun. |
| You may be right about seeing some sap today 7 | Return to Table | Rain. Lo 20-Hi 45.There is a reasonable chance of seeing some flow because temperatures went from below to above freezing. Rainy conditions mean a falling barometer which will help the flow. Absence of sunshine will hamper flow. Make sure the buckets are covered. |
| You may be right about not seeing a run 8 | Return to Table | Rain. Lo 20-Hi 45. Temperatures have gone well above freezing but if conditions are raw and rainy, the flow may be minimal. This one is a tough call. |
| Sorry. There will be no sap flow today 9 | Return to Table | Cloudy. Lo 12- Hi 25. Regardless of the cloud conditions, temperatures are too cold to permit a run. |
| You're Right. There will be no sap flow today 10 | Return to Table | Cloudy. Lo 12- Hi 25. It's too cold for a run. |
| Sorry. There will be no sap flow today11 | Return to Table | Snow. Lo 12- Hi 25. Although you can sometimes get a run in the middle of a snowstorm, it won't happen today at these cold temperatures |
| You're Right. There will be no sap flow today 12 | Return to Table | Snow. Lo 12- Hi 25. It's too cold for a run, and cloudy, snowy conditions do not help. Be sure you have your buckets empty so the sap does not freeze and break the buckets |
| Sorry. There will be no sap flow today13 | Return to Table | Rain. Lo 15-Hi 34. Temperatures are barely above freezing, and any rain will likely be in the form of freezing rain. Such raw, cold conditions will not produce any sap. |
| You're Right. There will be no sap flow today 14 | Return to Table | Rain. Lo 15-Hi 34. Temperatures are barely above freezing, and the rain will be in the form of freezing rain. Such raw, cold conditions will not produce any sap. |
| Sorry. There will be no sap flow today 15 | Return to Table | Snow. Lo 15-Hi 34. Nearly freezing temperatures are accompanied by snow. Such raw, cold conditions will not produce any sap |
| You're Right. There will be no sap flow today16 | Return to Table | Snow. Lo 15-Hi 34. Nearly freezing temperatures are accompanied by snow. Such raw, cold conditions will not produce any sap |
| Sorry. There will be no sap flow today17 | Return to Table | Sunny. Lo 15-Hi 34. We'll probably see a few drops at peak temperature for the day, but temperatures are too near freezing to produce any appreciable flow even with the bright sunshine. |
| You're Right. There will be no sap flow today18 | Return to Table | Sunny. Lo 15-Hi 34. We might see a few drops at peak temperature for the day, but temperatures are too near freezing to produce any appreciable flow even with the bright sunshine. |
| Yes, look for some flow, but it may be disappointing19 | Return to Table | Cloudy. Lo 20-Hi 45. It's warm enough (45) for a run, but cloudy conditions mean that it will be on the raw, cool side. You may get some flow, but it won't be the greatest. |
| You may be right. The run today may be hardly worth gathering 20 | Return to Table | Cloudy. Lo 20-Hi 45. Cloudy, raw conditions may make for a poor flow even though the temperatures are well above freezing. A falling barometer will help. |
| Yes! You're going to have a booming run21 | Return to Table | Sunny. Lo 25-Hi 60. Perfect conditions. Night-time temps. dropped below freezing, and the daytime high accompanied with bright sunshine is very warm. Get the auxiliary storage tank ready. You're going to have to boil all night to keep up!! |
| Sorry. Call the Crew. 3 You will have sap today 22 | Return to Table | Sunny. Lo 25-Hi 60. With conditions like this there will be all kinds of sap!! Remember, overnight temperatures below freezing followed by sunshine and a big warm-up represent near perfect conditions for a run. |
| You're right. There will be a run today even if it is cloudy 23 | Return to Table | Cloudy. Lo 25-Hi 60. There is such a dramatic rise in temperature from below freezing to 60F that even with the clouds, there will be a big run. You will need a freeze again, however, to keep the run going. |
| Sorry. Call the Crew. 3 You will have sap today 24 | Return to Table | Cloudy. Lo 25-Hi 60. These are nearly ideal conditions for a big run even without the sunshine. |
| You're right. It will run today even in the rain 25 | Return to Table | Rain. Lo 25-Hi 60. You have the right conditions of freeze followed by a warm-up. The combination of freeze followed by rain is unusual but it could happen. Be certain your buckets are covered to keep out the rain water. |
| Sorry. Call the Crew. 3 You will have sap today26 | Return to Table | Rain. Lo 25-Hi 60. It may be raining and overcast, but the jump in temperature from below to well above freezing will give you a big run. Cover your buckets to keep out the rain water. |
| Yes you might get some run if it has been cool earlier27 | Return to Table | Sunny. Lo 35-Hi 56. If the past several days included freezing temperatures, you might get some sap, but flow will likely diminish in a day or so if it does not freeze again. |
| You may be right about little or no sap 28 | Return to Table | Sunny. Lo 35-Hi 56. Even with the sunshine, without the overnight freezing temperatures the flow will cease soon. |
| Sorry. You are not going to see any run 29 | Return to Table | Cloudy. Lo 35-Hi 56. Skies are overcast and temperatures are above freezing. There is insufficient sunshine or temperature variation to stimulate a flow. |
| You're right, there won't be a run today 30 | Return to Table | Cloudy. Lo 35-Hi 56. Skies are overcast and temperatures are above freezing. There is insufficient sunshine or temperature variation to stimulate a flow. |
| Sorry. You are not going to see any run 31 | Return to Table | Rain. Lo 35-Hi 56. Rainy conditions with no sunshine or significant temperature change are conditions that will not stimulate any flow |
| You're right, there won't be a run today 32 | Return to Table | Rain. Lo 35-Hi 56. Rainy conditions with no sunshine or significant temperature change are conditions that will not stimulate any flow |
| Sorry, you will not see any flow under these conditions33 | Return to Table | Sunny. Lo 45-Hi 67. Bright sunshine and temperatures in this range for even a few days will signal the end of the season. Begin looking for wildflowers such as the Harbinger of Spring. |
| You're right, there won't be a run today 34 | Return to Table | Sunny. Lo 45-Hi 67. Bright sunshine and temperatures in this range for even a few days will signal the end of the season. Begin looking for wildflowers such as the Harbinger of Spring |
| Sorry, you will not see any flow under these conditions 35 | Return to Table | Cloudy. Lo 20-Hi 45. Persistent temperatures in this range signal the beginning of spring. The season is over. |
| You're right, there won't be a run today 36 | Return to Table | Cloudy. Lo 45-Hi 67. Persistent temperatures in this range regardless of the cloud cover signal the beginning of spring. The season is over |
| Sorry, you will not see any flow under these conditions 37 | Return to Table | Rain. Lo 45-Hi 67. Persistent temperatures in this range with rain signal the beginning of spring. The season is over |
| You're right, there won't be a run today 38 | Return to Table | Rain. Lo 45-Hi 67. Persistent temperatures in this range with rain signal the beginning of spring. The season is over. |