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Meteorologist Aaron Shaffer

@ashafferwx.bsky.social
1.9K followers 485 following 869 posts

Retired TV meteorologist, UW-Madison graduate in Atmospheric & Oceanic Sciences. Bike commuting, mountain biking, windsurfing, skiing, backpacking, canoeing. Protect the Boundary Waters Canoe Area. Minneapolis Bicycle Advisory Committee Ward 8.

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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 6h
Now that we're sufficiently soaked, the rain is departing soon from Minneapolis - expect some lingering mist/drizzle not picked up by radar after but accumulating rain should be done soon. #mnwx
Radar view showing large blob of rain moving just east of Minneapolis and St Paul
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Melody Hoffmann @phmelody.bsky.social · 13h
BREAKING RAIN NEWS (Sept. 29 before noon)
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 14h
Our next soaker in the Twin Cities is incoming, expect rain within the next hour for much of the region. #mnwx
An active radar map with a line of heavy rain moving toward Minneapolis
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 26/09/2026
Also almost forgot I got to try out a @mcbl.bike Bunch bike while having a sucker, super cool!
Me riding a cargo bike while eating a sucker.
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 26/09/2026
Lots of people at Nicollet Open Streets despite the rain! So fun, especially because we normally are on a bike a block away so so many businesses we forget exist without this.
View looking south on Nicollet with lots of people filling the street and rain. Sidewalk art that says Hola. Me wearing a tiny flamingo inflatable hat.
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Dennis Mersereau 🛰️ @wxdam.com · 26/09/2026
My goodness, this nor'easter is a looker from space today. 😍
A visible satellite image of the nor'easter off the East Coast on Saturday afternoon.
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 26/09/2026
Looks like maybe first round of rain could pass early (incoming) and a break in rain follows for Nicollet Open Streets. Fingers crossed. #mnwx
Band of rain approaching Minneapolis on radar at 952am.
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 26/09/2026
Unfortunately iffy weather for Nicollet Open Streets tomorrow. Looks like spotty showers closer to the beginning (morning through 11ish) and then more organized showers trying to edge in. Slow moving, so possibly with some luck they hold off until afternoon. #mnwx
Future radar around noon Saturday showing rain really close to or over Minneapolis.
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National Weather Service @nws.noaa.gov · 23/09/2026
Tornado forecasting had to start somewhere. In the 1880s, US Army Signal Corps meteorologist John Park Finley studied tornado patterns, built a network of observers and pioneered experimental tornado forecasts. Meet America’s first tornado forecaster: www.noaa.gov/heritage/sto... #NOAAHeritageWeek

A map from John P. Finley’s booklet, “Tornadoes. What they are and how to observe them; with practical suggestions for the protection of life and property.” showing the path of the Enigma outbreak of tornadoes on February 19, 1884. (Image credit: Public Domain)
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National Weather Service @nws.noaa.gov · 22/09/2026
Today’s Fall Equinox at 8:05 pm ET marks the start of astronomical fall in the N. Hemisphere and is when the Sun is directly over Earth’s equator. Now through the Winter Solstice, the Northern Hemisphere will receive less ad less direct sunlight as Earth continues along its tilted orbit.
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 21/09/2026
Amazed to say I was able to nearly raise enough for this family to cover their 1st month rent AND their security deposit! Thank you to everyone - I raised $2325 for them.
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 21/09/2026
Some light rain or sprinkles possible over the next couple of hours as some dying rain showers move north. It's a race against time for them - but either way another cool and damp day. Quite a shift from our intensely hot summer. #mnwx
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taylr @taylordahlin.com · 19/09/2026
if you’re the white woman who was picking up a bat in downtown minneapolis on hennepin ave between washington & 3rd on 9/15 at noon, the minnesota department of health would like to talk to you because that shit was RABID! i would also like to talk to you because girl, wtf
mi
DEPARTMENT OF HEALTH
protecting, maintaining and improving the health of il Minesotans
RABID BAT FOUND ON SIDEWALK
On Tuesday, September 15 at about 12pm, a bat was found on the sidewalk on Hennepin Ave between N. Washington Ave and N 3°St.
The bat died and was sent for rabies testing. This bat tested positive for
rabies.
A woman was seen crouching by the bat and putting it into a bag. She was described as a 25-to-30-year-old white woman, about 5'5", with curly brown hair and a curly-haired golden retriever-like dog. If this was you, please call 911 and ask to be connected to Animal Care & Control.
Bites from bats are tiny, may be painless, and may not leave a mark. An person who had physical contact or touched this bat should talk with health care provider this weekend for assessment. During the week, Minnesota Department of Health can also provide rabies assessments at 651-201-5414.
If vou did not touch or have any contact with the bat, you have no risk of rabies and do not need shots.
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jilly @jilloffair.bsky.social · 18/09/2026
I love rain. Tomorrow gonna be lit*. *Me laying on my couch reading a book and drinking coffee while listening to the rain. Bliss.
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a squirrel @iamasquirrel.bsky.social · 18/09/2026
yeeeeaaaahh let's get drenched
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 17/09/2026
Looks like a mega soaker coming to the Twin Cities and much of Minnesota by morning, lasting through/into Friday night. Look for some totals of 1-2+ inches of rain by the end! #mnwx
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 17/09/2026
🤦
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Eric Moran @deveric.net · 17/09/2026
We got a cloudburst about ten minutes ago in 55412
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 17/09/2026
It seems that we get rain again in Minneapolis, enjoy! #mnwx
Rain on radar very close to Minneapolis, with more on the way
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 15/09/2026
Up to $950 now! Thank you to the most recent contributor.
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 15/09/2026
Thanks to some amazing generosity I've raised $850 toward a $1300 goal. Thank you!
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 14/09/2026
I don't think this round of storms will survive the storm shield. Expect a wet day and night with an inch or more of rain in the Twin Cities. #mnwx
Radar view of southern and Eastern Minnesota with imminent rain on radar
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Jeff Berardelli @weatherprof.bsky.social · 13/09/2026
It’s astonishing to see this, even though we saw it coming months ago. White = 10°F + above normal in the El Niño regions. Its immense! In the air, a regional warming of 10° is no big deal. But in the ocean it’s immense! Think about how hard it is/ how long it takes to cool/ heat your pool. 1/
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Friends of the Boundary Waters @bwca.bsky.social · 12/09/2026
🚨 BREAKING: The Minnesota DNR just canceled one of Twin Metals' state mineral leases. This is a HUGE win, and it happened because of YOU! Tens of thousands of you made calls and flooded the DNR's and the governor's inboxes, demanding action. Thank you for showing up for the Boundary Waters. 💚
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 12/09/2026
There's another maybe in the forecast for rain tonight as a cold front passes over Minneapolis. Earlier models showed another storm shield split, but this newer 3km NAM shows a chance around 10pm or so. #mnwx
Future radar view showing the state of Minnesota with forecasted possible rain over Minneapolis-Saint Paul
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National Weather Service @nws.noaa.gov · 11/09/2026
Severe thunderstorms are possible across portions of central Nebraska to the Upper Midwest this afternoon into tonight. Check weather.gov for the latest watches and warnings.
Title: Severe Weather Outlook, Friday, September 11, 2026

Header Details: Centered Area: Central. Last Updated: Sep 11 2026 1127 AM CDT. Valid Until: Sep 12 2026 0700 AM CDT.

Map Description: Map of the central and eastern United States showing severe thunderstorm risk zones. A Slight Risk area (yellow, category 2 of 5) covers central Minnesota into northwestern Wisconsin, including Duluth and Minneapolis. A Marginal Risk area (dark green, category 1 of 5) surrounds the Slight Risk and stretches southwest from Minnesota through eastern Nebraska, eastern Kansas, into parts of Oklahoma and Arkansas, as well as parts of the Ohio Valley and Southeast. General Thunderstorms (light green) cover much of the Western, Central, and Eastern US.
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 11/09/2026
Mutual aid request (I suppose DM for my Venmo?) - a family of 5 we'd supported January through May with rent, food, medical costs, etc but had become independent again has been forced to move apartments and need help paying a deposit + first month's rent. Any support appreciated!
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David Brauer @dbrauer.net · 09/09/2026
Today is the first actual Six Best Weather Weeks day which was supposed to start Sept. 1. Thanks fossil fuel antichrists.
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 02/09/2026
There's a chance overnight - 🤞. #mnwx
Radar showing storms in sw minnesota that could potentially survive to the Twin Cities.
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Pedaling Professor @pedalingprof.bsky.social · 29/08/2026
Just another reminder that people will gladly bike places when there are safe routes to get there and car-dependency isn't the only option provided.
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bowie deschanel @raisingonebrow.bsky.social · 28/08/2026
We're so dry here, we're down to 6,000 lakes
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 28/08/2026
Looking for rain? There's a *chance* heading into tonight/tomorrow morning. Best chance looks to come right around 6-7 a.m. tomorrow morning. If we're lucky we could DOUBLE our August precip so far (.2" still) on the higher end. #MNWX
Future radar showing rain arriving around 6-7 a.m. across eastern MN.
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Velour Shirt @object.works · 26/08/2026
Northeast Minneapolis excellence
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 26/08/2026
So major whoops here caught by @dbrauer.net - we got about 1.5" on July 31 (0.2" btw 7/9-7/30), so my quoted post is inaccurate. However, August so far has seen 0.2" of precip at MSP and we average 3.6" for the month.
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 26/08/2026
Since we last had a big rain (0.26") at MSP on July 8, we've had a total of 0.4" of rain. Much of Minnesota is now in a severe drought. #mnwx
Drought monitor map from August 20th showing Northeast Minnesota and much of East Central Minnesota in a severe drought
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 21/08/2026
Maybe? I certainly won't count on rain but there's a chance, as well as a chance of a severe thunderstorm. #mnwx
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Mike Levin @mikelevin.org · 19/08/2026
NOAA launches the weather balloons, floats the ocean buoys, flies the satellites, and staffs the forecasters that tell us when storms are coming. That data supports about two-thirds of the economy, roughly $1.3 trillion a year, and it paid us back $73 for every dollar we spent on it.
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Governor Tim Walz @governorwalz.mn.gov · 19/08/2026
The Boundary Waters will remain exactly as it should: wild, pristine, and unharmed.
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 18/08/2026
Thank you, @governorwalz.mn.gov!
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Governor Tim Walz @governorwalz.mn.gov · 18/08/2026
I’m using my executive authority to ban nonferrous mining in the Boundary Waters.    As far as my administration is concerned, the fight for the future of the Boundary Waters is over. The verdict is in. The decision is made. We will protect this place.
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 17/08/2026
There's a chance of rain! We'll see if it holds but it's closing in on the Twin Cities. #mnwx
Blob of rain on radar moving toward twin cities
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Adam @wyseapple.bsky.social · 17/08/2026
static.klipy.com
Dance Witch Ritual
ALT: Dance Witch Ritual
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 17/08/2026
This evening *could* bring us rain. It looks like a broken line of showers/storms will come through (meaning not a sure bet of rain) mid-evening. Be on the lookout if you're walking/biking, but know that there's also a chance rain misses us again. #MNWX
Future radar view showing storms in MN, but also some areas with no storms
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 16/08/2026
Looks like the Minneapolis Storm Shield was activitated for tonight. Maybe one of these tiny specks of storms west of the Twin Cities will survive and thrive as it moves east? #mnwx
Radar view of much of Minnesota showing a large gap in a north to south oriented line of storms surrounding the Twin Cities metro area up to St Cloud
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Abdul El-Sayed @abdulelsayed.bsky.social · 15/08/2026
We could eliminate $7 billion in medical debt with the $70 million they spent to beat me in the primary. Those same corporations and special interests are trying to buy the seat for Mike Rogers now. In November we teach them once and for all: Michigan is not for sale.
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 13/08/2026
Hello all - I've never shared a fundraiser, but this year I'm running the Twin Cities 10 Mile in support of MACV, the Minnesota Assistance Council for Veterans which works with organizations like @avivomn.org toward ending homelessness. Support me here: secure.givelively.org/donate/minne...
secure.givelively.org
Donate to SHAFFER AARON's Fundraiser for MACV TC Marathon 2026 by Minnesota Assistance Council for Veterans
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taylr @taylordahlin.com · 12/08/2026
PEGGY FLANAGAN WINS HER PRIMARY FOR MINNESOTA’S US SENATE SEAT!! reaction from her party at first ave in minneapolis!!
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 07/08/2026
More rain coming, this time it's with the cold front that'll dry things out after. #mnwx
Broken line of storms headed toward Minneapolis and St Paul on radar at 11:38 a.m.
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Avocadoplex (Matt) @avocadoplex.bike · 07/08/2026
the network outage yesterday must have messed with the storm shield in addition to ATC
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Meteorologist Aaron Shaffer @ashafferwx.bsky.social · 07/08/2026
Maybe the storm shield is down today. More spits of rain heading toward the Twin Cities. #mnwx
Isolated patches of rain on radar
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