Mount Washington Observatory is a non-profit institution working to advance understanding of the natural systems that create the Earth's weather and climate.
Mount Washington, NH
Joined October 2010
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The high-level clouds lit up around sunset this evening. These clouds will thicken and lower overnight, with intermittent fog possible tomorrow afternoon.
For more forecast details, please visit mountwashington.org/forecast.
#MWOBS #sunset #nhwx
The weekend began with 2.3 inches of fresh snowfall, but ample sunshine, low humidity, and above-freezing temperatures over the past few days have nearly returned the ground to bare rocks.
#NHwx #NH #mountains #snow #WhiteMountainsNH
We are excited to offer a new broadcast meteorology internship at MWOBS! These interns will have the unique opportunity to expand MWOBS’ forecasting and weather-focused content production for a range of media platforms. For more information, visit mountwashington.org/internsh…
Looking towards Mt. Clay, Jefferson, Adams, and Madison at #sunset today (19 Oct 2026).
#mountains #NHwx #snow #whitemountainsNH
Golden hour light this afternoon (18 Oct 2026), looking down at Mt. Monroe and the neighboring Lakes of the Clouds.
#NHwx #Mountains #snow #goldenhour #mtmonroe
Looking down at the southern summits of the Presidential Range (Monroe, Franklin, Pierce, Jackson, and Webster) at sunset today (17 Oct 2026).
#NHwx #NH #mountains #snow #sunset
We're looking for two educators to plan and implement our K-12 weather education programs. Learn more about the STEM Programs Manager and Lead STEM Programs Educator roles at the link below!
mountwashington.org/about-us…
#stemeducation #mountwashington #weatherscience
Our neighbors at Mount Washington State Park posted on Facebook/Instagram that their facilities are now closed for the winter season (see their post in the attached image or visit facebook.com/NewHampshireSta…)
The weather tower aglow in yesterday's sunrise, with a few remnants of rime ice hanging on before being gobbled up by today's warm, wet fog. Behind the tower off to the west you can see the shadow of Mount Washington, cast by the rising sun. #nh #mountwashington #sunrise #mwobs
The summit burst out of the fog this morning and was treated to pretty spectacular snoliage! Temperatures will rise well above freezing tomorrow, however, melting much of the rime ice we've been able to accumulate over the past several days. #nh #mountwashington #snoliage
Fall interns Emily and Alonso got to enjoy a gusty sunset yesterday evening before the summits re-entered the fog and rime overnight. Stay tuned for clearer skies later this weekend! #nh #mountwashington #whitemountains
Though Nimbus doesn't venture outside as often to join us on our weather observations now that the summit's frosty again, he still enjoys lounging in the sunshine by the beanbag chairs on a chilly autumn day! #nh #mountwashington #nimbuskitty #summitcat
We'd like to introduce you to Emily Grainger, one of our fall summit interns who is already publishing MWOBS forecasts. Read Emily's blog post at the link below:
mountwashington.org/mountain…
#mountwashington #weather #internship #mountainforecasts
Summit staff enjoyed a beautiful sunrise this morning, complemented by rime ice on the observation deck railing and a thin layer of snow on the summit cone.
The first measurable snowfall of the season was recorded yesterday (October 5th), with 0.7" of snow measured over the last 24 hours. The snow was accompanied by thick rime ice, subzero wind chills, and a peak wind gust of 110 mph!
Moonlight lit up the foreground as the Northern Lights briefly lit up the northern skies last night. From Monday into Tuesday, the immediate foreground pictured will turn white as snow and rime ice return (along with high winds). Full details available at mountwashington.org/weather/…
Lenticular clouds formed east of Wildcat on Thursday ahead of a cold front that passed today. Behind the front, much cooler weather will move in this weekend, followed by the potential for subzero wind chills, measurable snow, and icy trail conditions early next week. ...1/2
...For the full forecast details, visit mountwashington.org/weather/…
#mwobs #NHwx #fallfoliage #winter #Wildcat #lenticularcloud
2/end
Close to sunset today (30 Sept 2026), some soft, diffused rays of sunshine stretched over to Middle Carter, highlighting some veins of fall foliage running up the slopes above an undercast layer that settled into Pinkham Notch.
#NHwx #mountains #undercast #fall #fallcolors #NH
