GFS Day 6

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Tabular GFS Temperature Data For Day T+6

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The Global Forecast System (GFS) is a numerical weather prediction system run by the national weather service. The model is produces forecasts up to 16 days in advance, but with decreased spatial resolution after 8 days. It is the only model for which all output is available over the public domain and is therefore the basis of most non-NWS forecasting agencies. In the table below, GFS data for 158 cities is organized by state and population-weighted to produce state, natural gas region, and national tallies. Data for high/low temperatures and degree days are presented, along with the departure from historical averages. Degree days are a measure of projected temperature-dependent energy consumption. Cooling degree days (CDDs) are calculated by subtracting 65 from the mean daily temperature [(max temp + min temp)/2] to produce an estimate of cooling demand. Heating degree days (HDDs) are likewise calculated by subtracting the mean daily temperature from 65 to produce an estimate of heating demand. Total degree days (TDDs) are the sum of both heating and cooling degree days, usually calculated for a region. Finally, GFS model is run 4 times per day, at 0000 UTC, 0600 UTC, 1200 UTC, and 1800 UT and numerical output is updated twice daily, at roughly 12:30 am EDT and 12:30 pm EDT. The 12-hour trend in temperatures from one model run to the next is also presented below.

Maps Click the map below for heating/cooling demand-based interpretation of GFS Data. Maps include forecast total degree days (TDDs), departure from average TDDs, and 12-Hour model trend. (Click Above Or Click Here For Link To Day T+6 Maps) National Weather Service GFS Maps Click below for NWS-generated GFS maps at 6-hour intervals with both temperature and precipitation patterns. The 0000 UTC maps update daily at between 11:30pm EDT and 12:30am EDT while the 1200 UTC maps update between 11:30am EDT and 12:30pm EDT. Linked images are for 10 meter wind and precipitation. Additional data including upper-air and cumulative precipitation maps can be found on the NWS GFS homepage by Clicking Here. 0000 UTC Model Run--Day T+6 1. Hour 150 (Day T+6, 2am EDT) 2. Hour 156 (Day T+6, 8am EDT) 3. Hour 162 (Day T+6, 2pm EDT) 4. Hour 168 (Day T+6, 8pm EDT) 1200 UTC Model Run--Day T+6 1. Hour 138 (Day T+6, 2am EDT) 2. Hour 144 (Day T+6, 8am EDT) 3. Hour 150 (Day T+6, 2pm EDT) 4. Hour 156 (Day T+6, 8pm EDT)

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