NWS

NWS


Official Twitter account for NOAA's National Weather Service. Details: http://weather.gov/twitter

2867679 followers  •  309 follow  •  Eastern Time (US & Canada)  •   http://www.weather.gov

The Northern Plains may be singing "Baby, It's Cold Outside" this week as wind chills overnight could be as low as -40 (Fahrenheit AND Celcius - SCIENCE!) tonight and tomorrow night as Arctic air spills in. Bundle up and stay warm!

In 1882, the US Army Signal Corps tasked Sergeant John P. Finley with investigating tornadoes and developing forecasting methods. Finley developed 15 rules for early tornado forecasting. Read more here: #NWS150 

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Two weather systems are bringing widespread snow from the California mountains to the Rockies and the Northern Tier. Freezing rain may develop for portions of the Midwest. Heavier snow is expected in the higher mountains and near Lake Superior.

Lots of gray on the map this morning for dense fog, and plenty more low visibility in other areas (which I can personally attest to). Everyone's excited to be back to work and all, but take it slow. If you can't see, you can't stop

I’m dreaming, of a whiiii****** (Removed due to copyright). Anyway, what are the chances you’ll have a white Christmas?❄️❄️

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So, we're banned from singing on twitter now, so just hum "Let it snow" to yourself... A system working through the Upper Midwest today will combine with Lake Effect snow through tomorrow to bring periods of heavy snow downwind of Lakes Superior and Michigan.

Weather impacts everyone, not just those who can see or hear it. Watch an NWS meteteorologist demonstrate the importance of communicating severe weather conditions to everyone, including the deaf and hard-of-hearing and other underrepresented groups.

A strong cold front will slowly sweep through the East and South on Tuesday and Wednesday. Behind this front, a zone of light #snow  may develop and fall from north #Texas  to the #Northeast . Some accumulations are expected and this may be the first snowfall of the season for many!

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This event is unprecedented & all impacts are unknown & beyond anything experienced. Follow orders from officials to ensure safety. #Harvey 

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There's an increasing chance for #Dorian  to bring a triple-threat of dangers to the Florida east coast... 🌊life-threatening storm surge 🌬️devastating hurricane-force winds 🌧️heavy rains The onset of tropical storm force winds could be as soon as Saturday evening. Prepare NOW.

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#Harvey in perspective. So much rain has fallen, we've had to update the color charts on our graphics in order to effectively map it.

Here are the latest Key Messages on Hurricane Dorian from @NWSNHC 

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Important note as #Florence  continues to close in on the Carolina coastline, storm surge is not just an "ocean" problem tonight. Significant surge is expected to occur in the NC inlets and rivers, some areas in excess of 9 feet!

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#Barry will slowly move inland today and continue to produce the following hazards... -Life-threatening storm surge to coastal areas of Louisiana and Mississippi -Heavy rainfall and flash flooding -Strong wind and the threat for downed trees and power lines

Keep your eyes out for fake forecasts. THIS is what an official NOAA advisory looks like. Note: forecast only goes out 5 days. #Irma 

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For our friends in TX, if experiencing life-threatening flooding, move to a higher floor with windows or to the roof. #Harvey 

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While Astronomical #Winter  doesn't commence until the solstice on Dec 21, Meteorological Winter starts TODAY and lasts through Feb. 28. What's the difference between meteorological and astronomical seasons? Read about it here:

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#HurricaneFlorence is very large and incredibly dangerous. ✅Follow local evacuation orders! ✅Prepare for life-threatening, catastrophic flooding over portions of the Carolinas and Mid-Atlantic states late this week into early next week.

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