2020 Fall Foliage Peak Map: When Leaves Are Best In Maryland

MARYLAND — The first day of fall is still weeks away, but the autumnal equinox isn’t the best measure of when foliage will turn to blazing reds, vibrant oranges and sunny yellows in Maryland. And hiking or taking a drive to view Mother Nature's fall show is a great and safe way to get out of the house during the coronavirus pandemic.

No predictive tool is 100 percent accurate, but using the newly released interactive “2020 Fall Foliage Prediction Map” can help you plan excursions to see autumn leaves at the peak of their splendor.

In Maryland, the week of Oct. 26 looks good for a trip into the great outdoors.

Developed as a tool to help vacationers book lodging and other accommodations in the Smoky Mountains, which rise above the Tennessee-North Carolina border, the Fall Foliage Prediction Map from SmokyMountains.com provides peak leaf change predictions for the entire continental United States.

To use the map, simply slide the scale to the right to see when leaves will peak in your state. Zero in on your county, and you’ll be able to decide whether it’s best to plan a northern, southern, eastern or western route.

Our state offers some stunning vistas, including several in state parks suggested by Visit Maryland:

• The C&O Canal National Historic Park offers numerous hiking options, such as the strenuous Billy Goat Trail for advanced hikers. The trail rewards hikers with vistas of the surging Potomac River flanked by forests bursting with color.
• Elk Neck State Park located on a peninsula between the Chesapeake Bay and the Elk River combines colorful forests with sandy beaches for great viewing. From the Turkey Point parking lot off Route 272 South, it's an easy one-mile walk to the historic 1833 Turkey Point Lighthouse atop a 100-foot bluff at the southern tip of the Elk Neck Peninsula. Climb 35 feet to its top for a spectacular view of the Bay waters and brilliant fall foliage.
• Patapsco Valley State Park, covering 32 miles of the Patapsco River in Howard County, offers great fall foliage views from the comfort of your car if that's a better fit for you. Drive to Valley Overlook in the Hollofield area right off Route 40. From there you can venture into Ellicott City's Main Street, which has shops and restaurants open even as it recovers from fatal August floods.
• In the heart of Baltimore County's horse country, Oregon Ridge Park near Cockeysville has hiking trails that showcase a tree-scape of yellow, orange and red.
• Swallow Falls State Park in Garrett County is located nine miles north of Oakland and contains part of the Youghiogheny River, which flows along the park's borders, passing through shaded rocky gorges and creating rippling rapids, and Muddy Creek Falls, a 53-foot waterfall. The 1 1/4 mile trail through Swallow Falls guides hikers to Western Maryland's breath-taking scenery.
• Other areas to visit close to the Baltimore-Washington metro area: Gwynnbrook Wildlife Management Area in Owings Mills, Baltimore County; Sugar Loaf Mountain Natural Resource Area in southern Frederick County; Seneca Creek State Park just southwest of Gaithersburg; and Dierssen Wildlife Management Area situated between the C&O Canal and the Potomac River in Montgomery County, offering first-rate opportunities for waterfowl watching and quiet interludes for strollers along the Canal Tow Path.

The major factors that determine the fall foliage peak are sunlight, precipitation, soil moisture and temperature. The map takes in 50,000 predictive data sets, then churns out a county-by-county analysis of when the fall peak will occur, according to SmokyMountains.com co-founder David Angotti, an expert on statistics.

Angotti said improvements in algorithms used in the map combined with meteorological data sources have improved the reliability of the map, though he cautioned accurate meteorological predictions are “somewhat elusive and never 100 percent accurate.”

A new map is created every year due to dramatic changes from one year to the next, the release said.

What Causes The Different Colors

You probably remember from science class that the color change all starts with photosynthesis. Leaves constantly churn out chlorophyll — a key component in a plant’s ability to turn sunlight into the glucose it needs to thrive — from spring through early fall. Those cells saturate the leaves, making them appear green to the human eye.

But leaves aren’t green at all. Autumn is the time for leaves’ big reveal: their true color, unveiled as chlorophyll production grinds to a halt. The colors in fall’s breathtaking tapestry are influenced by other compounds, according to the national park’s website.

Beta carotene, the same pigment that makes carrots orange, reflects the yellow and red light from the sun and gives leaves an orange hue.

The production of anthocyanin, which gives leaves their vivid red color, ramps up in the fall, protecting and prolonging the leaf’s life on a tree throughout autumn.

And those yellows that make you feel as if you’re walking in a ray of sunshine?

They’re produced by flavonol, which is part of the flavonoid protein family. It’s always present in leaves but doesn’t show itself until chlorophyll production begins to slow.