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National Weather Service
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Debris flows often happen in areas where excessive rain causes soil to become so saturated it turns into very runny mud. The mud races downhill, picking up debris such as fallen branches, tree trunks, and rocks as it goes.

Know the risks for your area: weather.gov/safety/flood-hazards

Photo: FEMA
Text on graphic says: "Be Prepared for Debris Flows. Heavy rain can cause debris flows in minutes, potentially burying homes. Areas with low vegetation or recent wildfire burns are especially at risk. Have a plan for your family and be ready to follow instructions from local officials. Get out of the danger area before it begins. There is no time to protect like and property once a debris flow has started." Image next to text shows flooding, building and tree damage from a debris flow.
December 9, 2025 at 6:30 PM
nws.noaa.gov
A strong clipper is expected to bring the threat of heavy snow and high winds across the upper Midwest on Tuesday then across the Great Lakes on Wednesday.

Snow totals of 4-8 inches can still be expected across areas of North Dakota through the central Great Lakes.

Check the latest at weather.gov.
December 9, 2025 at 4:45 PM
nws.noaa.gov
A prolonged atmospheric river will continue impacting the Pacific Northwest with heavy rainfall. Widespread significant river flooding is underway and is expected to continue through much of the week.

It will be critical to monitor the forecasts now and through the next seven days at weather.gov.
A map showing the river gauges across western Washington and Oregon that are in different flood stages on December 9, 2025. Numerous flood watches and warnings also cover the area.
December 9, 2025 at 3:32 PM
Reposted by National Weather Service
noaa.gov
Our Monthly U.S. Temp and Precipitation report is out, this time for #November 2025:

Find it at: ncei.noaa.gov/news/nationa...

via NOAA NCEI
Assessing the U.S. Temperature and Precipitation Analysis in November 2025
The average temperature of the contiguous U.S. in November was 46.8°F, 5.1°F above the 20th-century average, ranking as the fourth-warmest November in the 131-year record.
ncei.noaa.gov
December 8, 2025 at 4:23 PM
nws.noaa.gov
💨❄️High winds, accumulating snow, and icy conditions are expected across a number of states from Montana to Michigan today through Wednesday (Dec. 8 -10) due to two different Alberta Clipper systems moving across the northern U.S.

🚙Get the latest: weather.gov
NOAA infographic titled "Winter's Fury: Alberta Clippers." A map of the United States displays a dashed line with arrows labeled "Common low pressure track" moving southeast from the Canadian border near Montana, across the Great Lakes, to the Mid-Atlantic coast. A yellow shaded band runs along the top of this path with a label stating, "Snow will fall near and north of the low pressure track." A large purple text box explains: "As their name suggests, these fast-moving low pressure systems get their start in Canada and zip across our northern states. They can pack a punch with a narrow band of 'dry' but significant snow. In the winter, these systems commonly bring in below zero temperatures and are often responsible for white-out conditions from Montana to the Dakotas." An additional note adds, "A frigid Canadian air mass sometimes follows on the heels of a clipper system."
December 8, 2025 at 8:11 PM
nws.noaa.gov
It's a MONSTER week for #Weather101 with 7 classes on the docket. Kick it off today with "The Radar" and wrap with our Storm Prediction Center discussing how they use AI to assist with their Convective Outlooks. Get signed up for any or all of this week's classes here: weather.gov/ohx/weather101
A digital flyer from the National Weather Service titled "Weather 101" set against a blue sky with clouds. It lists a schedule of upcoming online classes with times in Eastern Time (ET): TODAY, 11 am: The Radar TONIGHT, 8 pm: AI in SPC Outlooks Tue, Dec 9, 8 pm: Upper Air Soundings Wed, Dec 10, 11 am: Satellites Thu, Dec 11, 11 am: Rip Currents Thu, Dec 11, 8 pm: Monsoons Fri, Dec 12, 11 am: River Ice Yellow text at the bottom reads: "To register and for a full list of classes, visit weather.gov/ohx/weather101". Additional text notes that these online classes are free, open to all ages, hosted by an NWS meteorologist, and run 1 hour or less.
December 8, 2025 at 2:03 PM
nws.noaa.gov
Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida through the evening.
December 7, 2025 at 8:24 PM
nws.noaa.gov
Heavy rain is expected to begin across the Pacific Northwest tomorrow and linger through the week. Rainfall amounts up to 10" are possible within the Olympics, Cascades, and coastal ranges. 🌧️

Check conditions before traveling and never drive across a flooded roadway.

weather.gov
Here is the alt text for the precipitation map: A NOAA National Weather Service map titled "Forecast Precipitation," valid ending Thursday, December 11th, 2025, at 4 PM PST. The map covers the Pacific Northwest, focusing on Washington and Oregon. A color-coded legend on the left ranges from light green (up to 0.1 inch) to purple (30.0 to 50.0 inches) to show accumulated precipitation. The map depicts a significant precipitation event: Heaviest Rainfall: Deep red and maroon blotches cover the Olympic Peninsula and the coastal mountain ranges of Washington and Oregon, indicating extremely high totals ranging from 8.0 to 15.0+ inches. Major Cities: The I-5 corridor, including Seattle, Tacoma, Portland, and Salem, is covered in orange and red bands, indicating totals between 3.0 and 8.0 inches. Eastern Regions: East of the Cascade mountains (near Bend), the colors shift to greens and yellows, indicating significantly lower amounts between 0.5 and 2.0 inches.
December 7, 2025 at 3:20 PM
nws.noaa.gov
Considerable flooding is possible across portions of the Pacific Northwest next week. Keep up to date with the latest forecast at weather.gov.
Key Messages: Pacific Northwest Flooding, issued December 5, 2025, 3:00 PM CT Flooding Possible Next Week Considerable Flooding Possible Cascade Foothills Considerable urban and river flooding is possible in the foothills of the Cascades beginning late Monday night and continuing through the end of next week. Widespread Urban and River Flooding Widespread urban and minor river flooding is also possible over the remainder of western Washington and portions of northern Oregon. Snow Levels Will Remain High Snow levels are expected to remain high over most of the event, limiting the contribution of snowmelt in producing runoff. For the latest rainfall forecasts, visit www.wpc.ncep.noaa.gov Flood hazards seven day outlook map, issued Friday, December 5, 2025. The map highlights Washington state where there is a limited to considerable flooding impact expected. Considerable means significant flash flooding and/or moderate to scattered major river flooding is expected.
December 5, 2025 at 11:11 PM
nws.noaa.gov
It will be quite cold from the Northern Plains to the Northeast this weekend with a big dip in the jet stream and multiple cold frontal passages heralding the arrival of arctic air masses. Some subzero overnight lows are likely across portions of the Dakotas and into Minnesota.
December 5, 2025 at 6:49 PM
nws.noaa.gov
❄️ D.C.'s first measurable snow of the season covers the capital in a hush of flurries. Winter is making a return with cooler than normal temperatures in the forecast for the next several days.

Stay up to date with the latest forecast at weather.gov.
Credit: Bob Hyatt, NWS
December 5, 2025 at 4:13 PM
nws.noaa.gov
December’s full moon is commonly referred to as the Cold Moon. You can guess why. It’ll certainly live up to its name, as tonight’s full moon will oversee record cold low temperatures from Illinois to Maine. Visit weather.gov for your latest, local forecast.

#fullMoon
NWS photo: Robert Hyatt
Photograph of tonight’s full moon on a black, nighttime sky background.
December 4, 2025 at 11:58 PM
nws.noaa.gov
Just a thin layer of ice on roadways is enough to make driving hazardous⚠️

Bridges and overpasses are especially prone to ice formation that is difficult to see, as winds beneath the structures accelerate cooling and maintain lower surface temperatures.

Remember -- Ice or snow take it slow!
Don't Let Black Ice Sneak up On You. It can form on any road, but also along curbs and drainage areas due to melting snow. More prevalent at night, but can still be around in the morning. Don't drive during freezing temperatures after rain or snowmelt.
December 4, 2025 at 8:38 PM
nws.noaa.gov
An arctic front tracking across the Northeast will trigger rounds of snow showers & snow squalls today. Attached are the latest Key Messages & an infographic on snow squalls. If you receive a warning, know that a snow squall is occurring or imminent & slow down or delay travel. weather.gov
Key Messages for Northeast Snow Squalls. Dangerous Driving Conditions An arctic cold front will move through the Great Lakes and Northeast U.S. today, bringing a chance of snow squalls to the region. Snow squalls can cause rapid reductions in visibility and create icy roads very quickly, which can be hazardous to motorists. Snow Squall Timing The front will move from northwest to southeast through New York State and northern/central New England beginning in the early morning hours and linger through the afternoon. Potentially affected Interstate highways include I-90, I-81, I-87, and I-89. What are snow squalls? Snow squalls are intense, but limited duration, periods of moderate to heavy snowfall, accompanied by gusty surface winds resulting in reduced visibilities and whiteout conditions. Snow squalls can be extremely dangerous. If you cannot exit the road in time, slow down, turn on your lights, and pull over to the side of the road safely. Snow squalls: intense bursts of snow and wind; short duration; whiteout visibility; rapidly deteriorating road conditions. National Weather Service Snow Squall Warnings: issued when a snow squall is occurring or imminent; typically in effect for 30-60 minutes in a small, targeted area; can trigger a Wireless Emergency Alert to your phone; when issued, slow down or delay travel.
December 4, 2025 at 2:28 PM
nws.noaa.gov
Precipitation over the next week looks to focus across the Pac NW and Gulf Coast regions with a decent soaking for each, along with lake effect precipitation falling downwind of the Great Lakes. What's in store for you? Check it out at weather.gov
December 3, 2025 at 4:26 PM
nws.noaa.gov
A storm system will bring accumulating snow tonight through Thursday morning for portions of Colorado, New Mexico, and Wyoming. Travel impacts are expected, so stay ahead of the storm by visiting weather.gov for details in your neck of the woods.
Map showing expected snowfall amounts across Colorado and northern New Mexico for the 72-hour period from 5 a.m. Tuesday, December 2 to 5 a.m. Friday, December 5 (MST). Highest totals—shown in bright yellow and orange—more than 8 inches in the central and northern Colorado mountains. Surrounding dark and medium blues show widespread 3 to 6 inches across much of Colorado. National Weather Service logo appears in the lower-left corner.
December 2, 2025 at 5:10 PM
nws.noaa.gov
Isolated severe storms are possible mainly across the eastern Florida Panhandle into northern Florida this morning. The stronger storms could produce locally damaging gusts and perhaps a brief tornado. Visit weather.gov for the latest.
Map of Florida showing the Severe Weather Outlook for Tuesday, December 2, 2025. A Marginal Risk area (shaded dark green) covers parts of the Florida Panhandle, Big Bend, and north-central Florida, including Tallahassee, Gainesville, and Jacksonville. A surrounding light-green area indicates general thunderstorms, extending south through Orlando, Tampa, Sarasota, Fort Myers, and West Palm Beach. Coastal cities such as Pensacola, Destin, Panama City, Daytona Beach, Melbourne, and Miami are labeled. The map includes the NOAA and National Weather Service Storm Prediction Center logos. A legend shows risk categories from general thunderstorms to High Risk.
December 2, 2025 at 3:52 PM
nws.noaa.gov
Sunspot Clusters, Solar Flares, CMEs, and a Coronal Hole High Speed Stream (CH HSS) - these are the primary solar activity threats and events during the week. Stay informed at the Nation's official source for space weather forecasts at spaceweather.gov
Space Weather Story of the Week infographic, dated Mon, Dec 1, 2025. The headline is "WHAT: Massive Sunspot Clusters, Solar Flares, Occasional CMEs, and a Coronal Hole High Speed Stream (CH HSS)." The graphic shows three images: 1) NSO/GONG image showing Sunspot Regions (RGNs) 4299, 4296, 4294, and 4298; 2) GOES-19/COR:1 image showing a Coronal Mass Ejection (CME); and 3) GOES-19/SUVI image showing the Sun with a Coronal Hole (CH 04). The summary text states: "Space Weather Activity Potential is Elevated." A massive cluster of sunspots in the southeast quadrant is rotating towards the center disk. Activity includes R1-R2 (Minor-Moderate) solar flares and Coronal Mass Ejections. A CH HSS will begin to influence Earth with G1 (Minor) storm potential on December 4-5
December 1, 2025 at 5:45 PM
nws.noaa.gov
From Alaska to Maine, winter weather watches, warnings, and advisories are in effect today (December 1) across over 20 states due to ongoing or expected snow/ice. Make sure you're taking time to ready yourself for winter driving!
weather.gov/safety
A dark-themed infographic titled "WINTER DRIVING KNOW BEFORE YOU GO." It features an illustration of a house, a yellow car, and dashed lines connecting to three main safety tips: 1) Check road conditions (Call 511 or visit your state's DOT webpage); 2) Pack an emergency supply kit (including a mobile phone charger, first-aid, non-perishable food, blankets, and battery booster cables); and 3) Ready your vehicle (Check battery, wipers, coolant, tires, and clear windows, lights, and camera). A dark blue infographic titled "WINTER DRIVING WHILE ON THE ROAD." It illustrates three vehicles on a snowy road: a snowplow, a yellow car, and a dark vehicle. Text connected to the illustration provides three main safety tips: 1) Don't crowd the plow (The road behind a plow is safer to drive on; give it plenty of room); 2) Change the way you drive (Drive slower, leave more room, DO NOT use cruise control, or brake/turn sharply); and 3) Stay alert (Keep your gas tank over half full, monitor rapidly changing road conditions, and take breaks). A dark blue infographic titled "WINTER DRIVING FOCUS ON SAFETY." It features an illustration from a driver's perspective inside a car, showing the steering wheel and dashboard. Text connected to the illustration provides three main safety tips: 1) Prevent a bad situation from getting worse (If in an accident, pull off the road, use hazard lights/reflectors, call 911, and wait for police); 2) Avoid risky driving behavior (Avoid texting, phone calls, speeding, or drug/alcohol use, as risk is higher in winter); and 3) Wear your seatbelt (Accidents are frequent in wet/icy conditions; always wear a seatbelt and ensure children are in proper seats).
December 1, 2025 at 3:14 PM
nws.noaa.gov
It's almost like an early Christmas present -- a #Weather101 class each day this week. We'll wrap it and put a bow on it for you starting tonight at 8 pm ET. Visit weather.gov/ohx/weather101 to register for this week's FREE online classes.
The National Weather Service Presents Weather 101. The classes this week are Monday Dec 1 at 8pm ET (Subject: tsunamis), Tuesday Dec 2 at 8pm ET (Subject: satellites), Wednesday Dec 3 at 8pm ET (Subject: Quasi-Linear Convective Systems), Thursday Dec 4 at 11am ET (Subject: Observations in 3D), and Friday Dec 5 at 11am ET (Subject: Monsoons). To register and for a full list of classes, visit weather.gov/ohx/weather101. These online classes are free and open to people of all ages. Each class is hosted by a NWS meteorologist. Classes run 1 hour or less and including a Q&A session.
December 1, 2025 at 2:30 PM
nws.noaa.gov
Winter driving can be hazardous. Slow down to keep yourself and everyone on the road safe. Remember, “Ice and snow, take it slow”. Learn more at weather.gov/safety/winter
Ice and Snow, Take It Slow. Did you know? Each year in the United States, there are over 1,000 deaths and 100,000 injuries due to vehicle crashes during winter weather. Clean off your vehicle before driving. Flying snow from cars causes accidents. Keep it slow, and don’t use cruise control. Roads can be slick even if they just look wet. Leave extra distance between vehicles. Stay especially far from snow plows.
November 30, 2025 at 12:00 PM
nws.noaa.gov
Even when it’s not precipitating, wet roads can quickly turn icy as temperatures dip below freezing. These unexpected slippery conditions can make driving hazardous. When roads look wet in the winter, stay cautious, slow down, and don’t use cruise control. Don’t let flash freezes sneak up on you!
Sneaky Winter Hazards: Flash freeze. Wet roads can freeze quickly at night or when there is a rapid drop in temperature behind a cold front. Safety tips: slow down; don't use cruise control; leave plenty of distance between you and other vehicles.
November 29, 2025 at 10:30 PM
nws.noaa.gov
A significant winter storm will produce a broad area of moderate to heavy snow and gusty winds from the Midwest through the western Great Lakes causing hazardous travel conditions. Thunderstorms, some severe, and showers may produce heavy rain and isolated flash flooding in the western Gulf Coast.
November 29, 2025 at 3:00 PM
nws.noaa.gov
Everyone is at risk from the dangers of extreme cold, but these groups are more vulnerable than most. Age and certain conditions make the body less able to regulate temperature.
Stay Weather-Ready and learn more about cold safety at weather.gov/safety/cold
An infographic titled "Cold Impacts: Vulnerable Populations," highlighting five groups particularly susceptible to cold weather dangers: newborns, elderly, chronic illness, outdoor workers, and the unhoused. Everyone is at risk from the dangers of extreme cold, but these groups are more vulnerable than most. Age and certain conditions make the body less able to regulate temperature. Cold Weather Safety Tips (with icons): Gloves icon: Dress in loose layers and cover all exposed skin. No symbol icon: Limit or avoid time outdoors. Hot drink icon: Consume hot foods and warm drinks, but avoid caffeine and alcohol. Person walking with cane icon: Check on family, friends and neighbors.
November 29, 2025 at 2:02 PM
nws.noaa.gov
Prepare your home for winter weather! Winter storms can knock out power & keep you from traveling. Keep enough non-perishable food, water & medications for at least 3 days. Ensure you have warm clothing & blankets. Update your first aid kit. Charge your phone in advance & check for WEAs.
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November 28, 2025 at 11:00 PM