WI Maple Sap Point Click Forecast Page

Welcome to the Experimental NWS Wisconsin Maple Sap Point-Click Forecast Page! This page is maintained by the National Weather Service Milwaukee/Sullivan Wisconsin Forecast Office, and was developed in collaboration with the Wisconsin State Climatology Office (click here for more info).

Zoom in and click on the map below to select a forecast point. A blue polygon (visible when you zoom in far enough) will display the area over which the forecast is valid, and the table below will update. The table is configured such that low temperatures align with the subsequent high temperature, meaning that a 'Thursday Night' low temperature will display in the same row as the 'Friday' high temperature and 'Friday' maple sap flow derived from those two values. The whole table is editable, you can click or tap into the cells of the table, change the values, and sap flow will be recomputed. This is especially useful for the 'Today' period, where the low temperature may be missing (since our forecast covers the future, not the past). If you have a thermometer available, you may enter your observation of the prior low temperature to complete the table. This also allows you to experiment with 'what if' scenarios for future temperatures.

Though this tool uses the exact same algorithm as the map-based version of the Maple Sap forecast, minor differences in results may occur, owing to the fact that the data source powering this point-click tool rounds temperatures to the nearest whole degree Fahrenheit and updates with fresh forecast data as frequently as possible (the map-based version only updates twice a day).

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