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Mark Margavage

@MeteoMark • 15,270 subscribers

Meteorologist, Winter Weather Specialist, and Snow Storm Chaser. Certified Airman 👨🏻‍✈️ PSU 2008. Wilkes U. 2016

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There are 2 unusual aspects of today's satellite imagery: 1. It's May 30th and there's a Nor'Easter. 2. This Nor'Easter is moving south rather than north. #wxtwitter #wxX

There are 2 unusual aspects of today's satellite imagery: 1. It's May 30th and there's a Nor'Easter. 2. This Nor'Easter is moving south rather than north. #wxtwitter #wxX

248,552 views

Weekend Storm Update Despite what you might have heard… I am STILL tracking the potential for a significant snow event this weekend. If it happens, the snow would arrive Sunday afternoon/evening. Model Guidance has been all over the place but I’ve been fairly consistent with my message: This looks like a Miller B Nor’Easter. Miller B storms typically have a mix line that sets up along I-78/I-80 in eastern PA and NJ. The European Model suggests that mix changes over to heavy snow as this storm strengthens. Whether or not that actually happens is pure speculation at this point. There are some non-linear processes that need to go exactly correct for this storm to produce significant snow. If not, the storm could miss off to the south. So nothing is set in stone yet, but the threat remains. ~Meteorologist Mark Margavage #wxtwitter #wxX #PAwx

Weekend Storm Update Despite what you might have heard… I am STILL tracking the potential for a significant snow event this weekend. If it happens, the snow would arrive Sunday afternoon/evening. Model Guidance has been all over the place but I’ve been fairly consistent with my message: This looks like a Miller B Nor’Easter. Miller B storms typically have a mix line that sets up along I-78/I-80 in eastern PA and NJ. The European Model suggests that mix changes over to heavy snow as this storm strengthens. Whether or not that actually happens is pure speculation at this point. There are some non-linear processes that need to go exactly correct for this storm to produce significant snow. If not, the storm could miss off to the south. So nothing is set in stone yet, but the threat remains. ~Meteorologist Mark Margavage #wxtwitter #wxX #PAwx

80,370 views

The “Out to Sea” A.I. Models are backing up like dump trucks ready to dump a whole bunch of snow on us. #wxtwitter #wxX

The “Out to Sea” A.I. Models are backing up like dump trucks ready to dump a whole bunch of snow on us. #wxtwitter #wxX

42,570 views

“Valentines Weekend” Storm Update 🌹She loves me… (Euro AI) 🥀She loves me not… (ECMWF) My take is the Operational European has a suppression bias when it comes to Miller B storms. We saw that with the storm back on January 25th, so I would side with the further north, AI solution on this one…for now. Still a long way off. #wxtwitter #wxX

“Valentines Weekend” Storm Update 🌹She loves me… (Euro AI) 🥀She loves me not… (ECMWF) My take is the Operational European has a suppression bias when it comes to Miller B storms. We saw that with the storm back on January 25th, so I would side with the further north, AI solution on this one…for now. Still a long way off. #wxtwitter #wxX

32,277 views

SLAMMING THE DOOR ON SUMMER 🚪 a BIG cooldown is coming 🥶 on the backside of Hurricane Erin 🌬️ to close out August. #wxtwitter #wxx

SLAMMING THE DOOR ON SUMMER 🚪 a BIG cooldown is coming 🥶 on the backside of Hurricane Erin 🌬️ to close out August. #wxtwitter #wxx

52,190 views

I DO NOT Endorse NOAA’s Winter Temperature Outlook. As I pointed out last year, they are making the same error again: relying on the climatology of a Strong La Niña when a Strong La Niña is neither present nor forecast to develop. If you want a Winter Outlook from a Winter Weather Specialist who looks at more than just the ENSO state, mine comes out in ~2 weeks. Stay tuned! ~Meteorologist Mark Margavage #Winter #Winteriscoming #wxtwitter #wxX

I DO NOT Endorse NOAA’s Winter Temperature Outlook. As I pointed out last year, they are making the same error again: relying on the climatology of a Strong La Niña when a Strong La Niña is neither present nor forecast to develop. If you want a Winter Outlook from a Winter Weather Specialist who looks at more than just the ENSO state, mine comes out in ~2 weeks. Stay tuned! ~Meteorologist Mark Margavage #Winter #Winteriscoming #wxtwitter #wxX

39,471 views

Multiple Models agree... Summer heat will be in short supply after this week. As a strongly positive PNA pattern develops, the Emperor of the North will be in control of our weather for much of August! That means we're going to be spoiled by beautiful weather, lower dew points, and perhaps an early taste of Fall! 🍁 #wxtwitter #wxX

Multiple Models agree... Summer heat will be in short supply after this week. As a strongly positive PNA pattern develops, the Emperor of the North will be in control of our weather for much of August! That means we're going to be spoiled by beautiful weather, lower dew points, and perhaps an early taste of Fall! 🍁 #wxtwitter #wxX

38,097 views

A Dramatic End to Summer... After a surge of Warmth next week, Fall-like Weather arrives promptly on August 1st! 🤩 #wxtwitter #wxX

A Dramatic End to Summer... After a surge of Warmth next week, Fall-like Weather arrives promptly on August 1st! 🤩 #wxtwitter #wxX

31,343 views

I’m issuing a Plowable Snow Watch in effect for Tuesday December 2nd in the following areas: Northern Virginia West Virginia Panhandle Western & Central Maryland Central & Eastern Pennsylvania Southeast New York All of Southern New England This means plowable snow is possible and you should monitor forecasts for future updates. #wxtwitter #wxX #VAwx #WVwx #MDwx #PAwx #NYwx #CTwx #RIwx #MAwx #CTwx #Snow #winteriscoming

I’m issuing a Plowable Snow Watch in effect for Tuesday December 2nd in the following areas: Northern Virginia West Virginia Panhandle Western & Central Maryland Central & Eastern Pennsylvania Southeast New York All of Southern New England This means plowable snow is possible and you should monitor forecasts for future updates. #wxtwitter #wxX #VAwx #WVwx #MDwx #PAwx #NYwx #CTwx #RIwx #MAwx #CTwx #Snow #winteriscoming

19,912 views

Southern New England has gotten absolutely blasted by snow today. An arctic cold front merged with an inverted trough to produce very heavy snow in a narrow area. This was discussed in my forecast, but reality has overperformed my expectations and every model forecast there was. Wow! I have a few reports of OVER 12” in Massachusetts and a widespread 6-10” in Rhode Island today. #MAwx #RIwx #wxtwitter #wxX

Southern New England has gotten absolutely blasted by snow today. An arctic cold front merged with an inverted trough to produce very heavy snow in a narrow area. This was discussed in my forecast, but reality has overperformed my expectations and every model forecast there was. Wow! I have a few reports of OVER 12” in Massachusetts and a widespread 6-10” in Rhode Island today. #MAwx #RIwx #wxtwitter #wxX

13,869 views

Early Fall? Multiple models are saying : ✅👍 They depict Hurricane Erin 🌀acts like a magnet 🧲 and pulls colder air into the Eastern US for the remainder of August. The colder, drier air also acts to deflect the Hurricane out to sea. 🌬️ (This remains the most likely scenario.) Note: 0z GFS used for illustration only…actual temperature anomalies will vary #wxtwitter #wxX

Early Fall? Multiple models are saying : ✅👍 They depict Hurricane Erin 🌀acts like a magnet 🧲 and pulls colder air into the Eastern US for the remainder of August. The colder, drier air also acts to deflect the Hurricane out to sea. 🌬️ (This remains the most likely scenario.) Note: 0z GFS used for illustration only…actual temperature anomalies will vary #wxtwitter #wxX

25,349 views

6am Pikesville MD #MDwx

6am Pikesville MD #MDwx

32,306 views

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The 6z GFS has come North and West of the 0z run with an All-Out Blizzard If this trend continues, and I suspect it will based on where the energy is coming ashore, this will be remembered as The Blizzard of ‘26. #wxtwitter #wxX
0:23
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The 6z GFS has come North and West of the 0z run with an All-Out Blizzard If this trend continues, and I suspect it will based on where the energy is coming ashore, this will be remembered as The Blizzard of ‘26. #wxtwitter #wxX

Mark Margavage

242,606 views • 3 months ago

BIG changes to the snowfall expectations in Pennsylvania 👎⏬ 😭 #PAwx #wxtwitter #wxX
1:00
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BIG changes to the snowfall expectations in Pennsylvania 👎⏬ 😭 #PAwx #wxtwitter #wxX

Mark Margavage

200,830 views • 3 months ago

I will repeat for the Heatmisers... The Northeast US will NOT be participating in any big Winter ending warm-ups. Keep kicking those cans down the road into March and April. Eventually Spring will come. #wxtwitter #wxX
0:25
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I will repeat for the Heatmisers... The Northeast US will NOT be participating in any big Winter ending warm-ups. Keep kicking those cans down the road into March and April. Eventually Spring will come. #wxtwitter #wxX

Mark Margavage

150,926 views • 4 months ago

WINTER FORECAST 2025-26 Right or wrong, at least it will give you something to talk about over your dinners. May you and your families have a safe and happy Thanksgiving! ~Meteorologist Mark Margavage #winteriscoming #wxtwitter #wxX #snow #WinterForecast
16:45
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WINTER FORECAST 2025-26 Right or wrong, at least it will give you something to talk about over your dinners. May you and your families have a safe and happy Thanksgiving! ~Meteorologist Mark Margavage #winteriscoming #wxtwitter #wxX #snow #WinterForecast

Mark Margavage

164,222 views • 6 months ago

I’m seeing a lot of arctic air in the forecast! We also have a Polar Vortex Split headed our way. Which means… Spring may not get sprung until April this year. #wxtwitter #wxX
0:34
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I’m seeing a lot of arctic air in the forecast! We also have a Polar Vortex Split headed our way. Which means… Spring may not get sprung until April this year. #wxtwitter #wxX

Mark Margavage

38,243 views • 3 months ago

The Heatmisers are officially on suicide watch as the big warm-up evaporates before their eyes. Like it or not, this extreme Winter season in the eastern US is far from over. #wxtwitter #wxX
0:23
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The Heatmisers are officially on suicide watch as the big warm-up evaporates before their eyes. Like it or not, this extreme Winter season in the eastern US is far from over. #wxtwitter #wxX

Mark Margavage

39,237 views • 4 months ago

Some People Wait a Lifetime for a Storm Like This A Tribute to the 18z GFS Dream Snowstorm with guest Meteorologist Kelly Clarkson #wxtwitter #wxX #NEPA #PAwx
2:26
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Some People Wait a Lifetime for a Storm Like This A Tribute to the 18z GFS Dream Snowstorm with guest Meteorologist Kelly Clarkson #wxtwitter #wxX #NEPA #PAwx

Mark Margavage

65,388 views • 1 year ago

It’s over. Canadian model wins. ✅👑 0z HRRR is all in on an Eastern PA-Interior New England Bullseye 🎯. I-95 is the mix line. If you don’t believe it at this point, you never will. #wxtwitter #wxX
0:21
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It’s over. Canadian model wins. ✅👑 0z HRRR is all in on an Eastern PA-Interior New England Bullseye 🎯. I-95 is the mix line. If you don’t believe it at this point, you never will. #wxtwitter #wxX

Mark Margavage

52,458 views • 1 year ago

A connection between a lack of Hurricane Landfalls 🌀, ENSO 🌊 , and Winter Cold & Snow ☃️ exists, and snow lovers will love it! 😍 Watch to find out more…👀 #winteriscoming #winter #snow #wxtwitter #wxX Bobby Martrich | EPAWA Tony Pann Kevin Williams Judah Cohen
5:20
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A connection between a lack of Hurricane Landfalls 🌀, ENSO 🌊 , and Winter Cold & Snow ☃️ exists, and snow lovers will love it! 😍 Watch to find out more…👀 #winteriscoming #winter #snow #wxtwitter #wxX Bobby Martrich | EPAWA Tony Pann Kevin Williams Judah Cohen

Mark Margavage

13,877 views • 8 months ago

My Plowable Snow Model Returns with a chance for a White Thanksgiving! (This model is created using a 51-member ensemble) #Pawx #NYwx #VTwx #MAwx #wxtwitter #wxX
0:32
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My Plowable Snow Model Returns with a chance for a White Thanksgiving! (This model is created using a 51-member ensemble) #Pawx #NYwx #VTwx #MAwx #wxtwitter #wxX

Mark Margavage

15,890 views • 1 year ago

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