Peak of winter in Northern America between 5.-15. February? + Southern USA under the snow (including Grand Canyon)

From southern parts of the USA, the most often hit by frosts and snowstorms are traditionally mainly parts of southern Midwest and Texas. Now, Southwest and parts of Southeast are under the snow and in some desert regions, the snow is seen after many years.
Only last week we warned about extreme cooldown in southeastern parts of the USA /https://mkweather.com/2021/01/21/southwest-usa-after-35c-94f-and-wildfires-a-powerful-coldwave-early-next-week-2021// and cold weather is really there.
In mountainous and northern regions, have been covered by snow lower situated areas, in the south, mountains around big cities have become white since weekend.
Under the snow is e.g. Grand Canyon, too, or many other desert regions in California, Nevada, Arizona or New Mexico.
In Southeast (and Midwest, Mid-Atlantic), another blizzard has brought many snowfall during last days, locally historic. Hit region is large almost from Atlanta into Philadelphia.
Accroding to some weather services and weather tools, wave of cold weather is long from coast to coast.
Accroding to the newest forecasts of GFS, Northern Amrica expect possible peak of Winter 2020/2021 in the first half of Feburary 2021, with next heavy coldwave arriving from the west and northwest and shifting towards eastern coast. This coldwave will be shifting across the USA according to current estimates mainly between 5.-15. Feburary 2021.

T850 hPa anomaly, Wednesday 27. January 2021 /wetterzentrale.de

T850 hPa anomaly, 16-day forecast /wetterzentrale.de

Grand Canyon under the snow, 27. January 2021

WOW! Check out this breathtaking view of a snow-covered Grand Canyon and the low thick clouds. The “partial cloud inversion” obscured most of the canyon. pic.twitter.com/ksw5lsKCI1
— Tim Williams (@realtimwilliams) January 27, 2021
California
Multiple storms impacting U.S. with winter weather from coast to coast https://t.co/sxXMSbfNtw #WinterStorm #USwx #California #snow
— The Watchers (@TheWatchers_) January 26, 2021
6+ feet of snow may fall over the High Sierra between now and next Friday as the stormy pattern continues for California. Snow could also cause some issues on the Grapevine #CAwx pic.twitter.com/NgC6f80Qa4
— Brian Lada (@wxlada) January 22, 2021
The heaviest snow will be heading into the Sierra Nevada.#cawx #cawater @StormHour @SnowHour https://t.co/qDn7GJ3In3 #CAStorm pic.twitter.com/OLYnwG6JFk
— Ed Joyce (@EdJoyce) January 27, 2021
California Snow! #cawx #WeatherRetweet https://t.co/M0w3YYkfiM
— Weather Retweet (@retweet_weather) January 27, 2021
In the Mountains above the L.A. Basin. (SoCal)#SnowInCalifornia #CaliforniaSnow 🌨️❄️☃️🏔️ pic.twitter.com/c9U41OSpZf
— 💚DJ COMATOSE🖤 🏴☠️🧨The Side Project⚡️🌹🏴🚩🦜 (@DJCOMATOSE) January 24, 2021
Raise & shine lol ❄️🥶🌨️ good morning everyone be safe, have some patience stay home if not need to go out! 01/27/2021 so far 3" in Reno/Sparks Nevada #snow @CassieWilsonWX @SteveBenderWx @NWSReno @TWCAlexWilson @KRNV @weatherchannel @accuweather @WeatherNation pic.twitter.com/HQHrHW3J8d
— Casimiro Cervantes (@CasimiroCervan4) January 27, 2021
In the Sierra Nevada and Lake Tahoe region, forecasters are calling for between 3 and 6 feet of snow by the end of this week…but then,
— JackReacher (@DCjusticeseeker) January 27, 2021
Meteorologists forecast a future without snow.https://t.co/gmImuNgM9m
Snow day here in southern Nevada yesterday! I missed snow so much. pic.twitter.com/teLyD8bWnj
— Freki The Feral (@FrekiTheFeral) January 27, 2021
A new #RenoTahoe Snowstorm may last 48 hours!.. 6' of snow may dump on top of the #SierraNevada! @sportstalkmatt @SueStitch @socaljb869 @JimCantore @MSNBC #Nevada #LasVegasFreeze https://t.co/ydVqhsDzyI pic.twitter.com/ZU1EHkEjny
— General Bob Custer (@GeneralGCuster) January 27, 2021
When was the last time we heard "snow day?" in Southern Nevada? https://t.co/EGGRh2mxUL
— KSNV News 3 Las Vegas (@News3LV) January 27, 2021
Bell rock is beautiful this morning. @SedonaMonthly @SedonaAZ @SedonaMagazine #BellRock #Sedona #Arizona #winter #snow pic.twitter.com/n6XwSkBYdk
— Bell Rock Photography (@BellRockPhoto) January 27, 2021
Wow! You got more snow in Arizona than we did on east coast. Crazy weather! https://t.co/1xB7ZAVi0g
— Dianne Baldassano (@lovetheos17) January 27, 2021
Sunrise in Prescott,AZ. So beautiful. #sunrise #Prescott #NaturePhotography #nature #Arizona #snow pic.twitter.com/PQWr3GE0oY
— Michelle Wilson (@arealdeal65) January 27, 2021
Multi-Vehicle Crash Closes Arizona Highway, Turns Snow Red
— Zack (@QueensIceZ) January 27, 2021
From The Weather Channel iPhone App https://t.co/WigSGiE7u5 pic.twitter.com/lQVEOJcI73
SNOW DAY! Rare snowfall hit Tuscon, Arizona yesterday. And the elephants came out to play. It was calf Penzi's first snow. https://t.co/6XbkUAdDu9 pic.twitter.com/esGAftckMn
— WFLA NEWS (@WFLA) January 27, 2021
I love great photography..
— 🌵Patti 💉Get VACCINATED (@olivier_patti) January 27, 2021
Snow in Arizona..🌵
My friend just sent me this
It is Bisbee Arizona
Beautiful.. !! pic.twitter.com/Q9P6qSFNB8
This was this morning I live in Albuquerque New Mexico it’s the desert and we get snow all the time pic.twitter.com/1QegRU4SFB
— Agustin 🦍 (@DubNAgguiixx49) January 26, 2021
PHOTOS: Snow falls across New Mexico Tuesday https://t.co/hao2LsGBNN
— KRQE News 13 (@krqe) January 26, 2021
Finally some heavy snow for Silver City, New Mexico! pic.twitter.com/Y641KVAKnD
— Erica Meyer (@erica_wx) January 26, 2021
❄Snow Report❄
— Mission Ridge (@skimissionridge) January 27, 2021
8" Overnight
8" 24 Hours
8" 48 Hours
Forecast – Snow before 11am, then chance of snow after 5pm. High near 28. Light and variable wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 100%. Total daytime accumulation of 1 to 3 inches. pic.twitter.com/w7nrJy6wKh
Accumulating snow into parts of the Southeast for Tonight into Thursday morning. pic.twitter.com/bHlr4E1djV
— Alan Rios (@Arioswx) January 27, 2021
Southeast snow? Sneaky storm may bring a quick-hitter https://t.co/o9oneiIGT6
— Neisha Williams (@NeishaW77746491) January 26, 2021
Southeast Snow? Sneaky Storm May Bring a Quick-Hitter | CBN News https://t.co/cDgcDwRZLo via @CBNNews
— CBN News (@CBNNews) January 25, 2021
Here are snow photos from across southeast Wisconsin. https://t.co/ucljPxJR52
— MyCommunityNow (@MyCommunityNOW) January 26, 2021
The @NWS said at least 4 inches of snow was expected across most of an area stretching from central Kansas northeast to Chicago and southern Michigan. Parts of southeast Nebraska and western Iowa got more than three times that much by Tuesday morning.https://t.co/eP7eCtfrVt
— 7News DC (@7NewsDC) January 26, 2021
While there are some slippery stretches of roads here in Northeast Wisconsin this morning, the southeast part of the state is dealing with blowing and drifting snow. https://t.co/yl8br0PB3k
— WLUK-TV FOX 11 (@fox11news) January 26, 2021
Winter Weather Advisories are in effect away from the coast starting Tuesday morning. Minor snow and ice accumulations are expected with a Coating-1" southeast and 1-3" northwest with locally higher amounts across the higher elevations; a glaze of ice is also possible: pic.twitter.com/GgLU9icfd4
— NY Metro Weather (@NY_WX) January 25, 2021