At a Glance

Winter storms can occur well into April and even in May in certain parts of the United States.Seven named winter storms have occurred after April 1 since the winter of 2013-14.Sometimes these late-spring snowstorms can occur simultaneously with an early-season landfalling tropical cyclone.

Even though April is the second month of , winter storms can still bring snow or ice to parts of the United States.In the last four winters, there have been seven named winter storms after April 1, three of which developed in May.

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Climatologist of the University of Alaska-Fairbanks, using climatological average data from 1981-2017,compiled the map below, which shows how much snow typically falls between April 1 and June 30 in the United States.

This map shows how much snow typically falls between April 1 and June 30 in the United States, based on NOAA/NCDC climatological averages from 1981-2017.

(Dr. Brian Brettschneider)

In an average spring, more than a foot of snow falls across much of the Rockies and in thehighest elevations of the Cascades and Sierra Nevadaafter April 1.This is because mountain locations are significantly colder than the lower elevations of the West, so any storm system that sweeps across the region has the potential to produce snow.

Six or more inches of snow typically accumulates after April 1 near the Canadian border in the upper Mississippi Valley and northern Great Lakes, as well as in far northern New England, far upstate New York, the high country of western Maryland and adjacent portions of eastern West Virginia.

A broad swath of the lower terrain of the Mountain West, the northern Plains, upper Midwest, interior Northeast and Appalachians can see a few inches of additional snowfall in April and May.

In Alaska, much of the 49th state can expect to see several inches of new snow April through June.

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Brettschneider also analyzed locations that have seen over 12 inches of additional snowfallbetween April 1 and June 30in their historical records.

Blue dots represent locations that have seen more than 12 inches of snow between April 1 and June 30 in their historical weather records.

(Dr. Brian Brettschneider)

More than a foot of snow has dropped after April 1in much of New England, the interior Northeast, Appalachians, upper Midwest, northern Plains and High Plains, Rockies and Sierra Nevada.

Areas as far south as North Carolina, Tennessee, Arkansas, West Texas, New Mexico, Arizona and the Southern California mountains have receivedmore than 12 inches between April and June.

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April and May Winter Storms Since Winter 2013-14

In the past four winters, seven winter storms after April 1.

The latest named winter storm occurred May 18-19, 2017,when dumped more than 40 inches of snow in parts of the Rockies.

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Cheyenne, Wyoming, picked up 11 inches of snow on May 18, 2017,alone.While Wyoming's capital city has picked up several less-heavy snow events as late as mid-June, Valerie produced its heaviest calendar-day snow that late in the spring on record.

The only other snowstorm onrecord there with at least 11 inches of snow that late in spring occurred 75 years ago, during World War II.

A few weeks before Valerie, crippled thecentral and southern High Plains. It wasone of the region's heaviest late-spring snowstorms onrecord.

Ursa brought heavy snow and strong winds fromthe Texas Panhandle to Nebraska duringthe last weekend of April 2017.Trees and power lines were knocked downed by the combination of wind gusts up to 70 mph and heavy, wet snow, estimated up to 20 inches in parts of northwestern Kansas.

Before pounding the High Plains, Ursa also brought snow to the Rockies April27-30, 2017.Slushy accumulations from Ursa also occurred in the upper Midwestas the storm began to wind down May 1-2, 2017.

The tracks of winter storms Ursa and Valerie in April and May 2017.

(weather.com meteorologist Jonathan Belles and The Weather Channel winter weather expert Tom Niziol)

In 2016, two winter storms occurred in April.

broughtmoderate to heavy snow to portions of New England and New York state April 4-5, 2016.

Less than two weeks later, dumped heavy snow in the Rockies and adjacent northern High Plains April 15-18, 2016.

A dog enjoys the heavy snow from Winter Storm Vexo in the Boulder, Colorado, area on April 17, 2016. Boulder received 18.3 inches of snow April 16-17, 2016.

(Bob Henson)

The 2014-15 winter season brought one named storm in May but none in April. dumped heavy, wet snow from the Rockies to the northern High Plains May 9-11, 2015,Mother's Day weekend.

In Rapid City, South Dakota, Venus produced 13.6 inches of snow at the National Weather Service office. It was the heaviest snowstorm so late in the season and the second-heaviest May snowstorm on recordthere.

Interestingly,at the same time snow from Venus was ongoing,on the South Carolina coast and.

Winter Storm Venus, Tropical Depression Ana and severe thunderstorms in the Plains states are shown in this satellite image from the Suomi NPP satellite on May 10, 2015, at 2:15 p.m. EDT.

(NOAA)

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Winter storms and were the late-spring snowstorms during the winter of 2013-14.

Yonadelivered a blanket of snow to the upper Midwest April 2-4, 2014, when nearly 18 inches of snow was reported in portions of northwestern Wisconsin and up to 10.5 inches was measured in downtown Minneapolis.

Zephyr didn't occur until over a month laterwhen itdropped heavy snow in the Rockies and parts of the adjacent Front Range urban corridor May 10-13, 2014. Up to 4 inches accumulatedin Denver's Stapleton neighborhood, anda foot of snow was the official measurementin Cheyenne, Wyoming.

Brian Donegan is a meteorologist at weather.com. Follow him on,and .