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MM’s Tues WX Blog for Apr 20

Weather Headlines

Rain and snow overnight

Winds increase overnight and last into tomorrow

Freezing temps Wednesday night (Freeze Watch in effect)

Meteorologist Mark’s Wx Vlog 

Five-Day Forecast

Daily Forecast Summary

Today: Partly cloudy and very nice.

Tonight: Rain and snow develop late. Little to no snow accumulation expected, although snow may try to accumulate on grassy surfaces. Windy.

Wednesday: Brisk north winds will make it feel quite chilly. Skies gradually clear out, after some morning snow flurries/snow showers.

Thursday: Partly cloudy and cool.

Friday: Clouds increase. Warmer.

Saturday: Rain and a few thunderstorms likely. Mild.

Meteorologist Mark’s 5-Day Wx Concerns

Rain will transition to snow overnight. That snow is most likely in the early morning hours of Wednesday. The snow is not expected to impact travel, though it may try to accumulate on grassy surfaces for a time.

Frost and freeze conditions will be likely Wednesday night. The NWS has issued a freeze watch for Wednesday night, for the likelihood for several hours of sub-freezing temperatures.

Widespread frost will once again be likely Thursday night. Protect any tender plants you have.

Severe thunderstorms are expected across the Deep South for Saturday. Those storms should stay south of Tennessee, but I’ll keep a close watch on that.

Meteorologist Mark’s Wx Discussion

Wow…we are in for quite the pattern change! Tonight’s cold front will usher in a return to winter. So, if you’ve missed winter….Ma Nature has a treat for you late tonight and tomorrow.

People often think some snow in April is very odd. It’s actually not. We’ve seen snow fall many times in April. It rarely accumulates to much, though we did once get half a foot of snow the first week of April, sometimes back in the mid 80s.

Another big pattern change is coming after this weekend. This time it’s a very warm pattern change. That may not bode well for us when it comes to spring storms. So, take your pic. You either get cooler and no severe storms, or warmer and the threat of storms. Yes, it’s springtime in Tennessee!

Almanac for Yesterday

On This Day in Wx History

2006 – Up to five feet of snow falls in the Dakotas. I-94 and other highways were closed, power was out for thousands and caused at least four deaths.

61 Days until Summer

Yesterday’s National Temperature Extremes

High:  98° at Death Valley, California

Low:   at Neihart & Pryor, Montana 

Today’s Statewide Weather (New!)

The skies will be filled with lots of sunshine across the Volunteer State today, though clouds will begin increasing ahead of our next storm system. Those clouds will move in from the west during the day, even leading to some showers for West Tennessee by midnight. We have one more warm day in store for us, with highs in the 70s across the state, before an overnight cold front brings a big pattern change.

Map created by

Tonight’s Statewide Weather (NEW)

Winter returns overnight, with showers across the state. Some areas will even see some snow fall from the sky late in the night, before the precipitation completely moves out. Brisk, northwest winds will usher in low temperatures in the 30s.

Tomorrow’s Statewide Weather  (NEW)

Skies will clear out from the west on Wednesday, with leftover showers falling across East Tennessee in the morning hours. That sunshine will be chilly, as brisk north winds blow in unseasonably cold air. Prepare for widespread frost and freeze conditions Wednesday night.  

Today’s National Weather Map

Flash flooding is a threat for central Florida today. Farther north, a very large area of rain mixed with snow will fill fall from northeast Oklahoma to New England! Some of that could be freezing rain along the New York/Pennsylvania border, as well as across parts of New Hampshire. Accumulating snow may fall across parts of the northern plains, as well as southern Colorado. A new storm system will bring mountain snow and valley rain/storms to northern California.

Drought Monitor

The drought monitor is updated once weekly and released each Thursday.

NASA Nerdology 

When making the STS-76 patch in 1996, designer Sean Collins recalled having Astronaut Rich Clifford’s son draw the patch in colored pencils. Collins then made his design a reality! In the patch, the shuttle flies out of Betsy Ross’ 1776 flag. How cool is that?

You all have a great day and keep lookin’ up!

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