Brennan Allen
@meteorologistallen.bsky.social
A guy who loves weather, off to become a Weather wizard
Rest in peace Peter. www.cbc.ca/news/canada/...
May 4, 2025 at 4:48 AM
Rest in peace Peter. www.cbc.ca/news/canada/...
I am envious of how well my puppy can sleep. What a peaceful lil guy 🐶
March 4, 2025 at 1:15 AM
I am envious of how well my puppy can sleep. What a peaceful lil guy 🐶
Reposted by Brennan Allen
Is today NCEP’s Katrina?
Mark today in the history books. The first AI weather prediction model labeled “operational” by a major world forecast center. Congrats ECMWF 🎉
We have taken our Artificial Intelligence Forecasting System (AIFS) into operations today to run side by side with our physics-based weather forecasts. The #AIFS outperforms traditional models for many measures, at a fraction of energy use. ➡️ www.ecmwf.int/en/about/med...
#AI #MachineLearning
#AI #MachineLearning
February 25, 2025 at 6:30 PM
Is today NCEP’s Katrina?
Reposted by Brennan Allen
AI weather models have their strengths - but just like any other model, they also have their weaknesses.
This upcoming Saturday is a major failure for the AIFS & GraphCast - both consistently showed a major nor'easter (with little support from the GFS & ECMWF), only to completely lose the storm:
This upcoming Saturday is a major failure for the AIFS & GraphCast - both consistently showed a major nor'easter (with little support from the GFS & ECMWF), only to completely lose the storm:
February 26, 2025 at 12:12 AM
AI weather models have their strengths - but just like any other model, they also have their weaknesses.
This upcoming Saturday is a major failure for the AIFS & GraphCast - both consistently showed a major nor'easter (with little support from the GFS & ECMWF), only to completely lose the storm:
This upcoming Saturday is a major failure for the AIFS & GraphCast - both consistently showed a major nor'easter (with little support from the GFS & ECMWF), only to completely lose the storm:
Reposted by Brennan Allen
I just signed a petition demanding the Minister of Innovation, Science and Industry Ban X/Twitter in Canada. Join me in signing here: you.leadnow.ca/petitions/ba... you.leadnow.ca/petitions/ba...
Ban X/Twitter in Canada
I just signed a petition demanding the Minister of Innovation, Science and Industry Ban X/Twitter in Canada. Join me in signing here: https://you.leadnow.ca/petitions/ban-x-twitter-in-canada/?source=f...
you.leadnow.ca
February 23, 2025 at 12:49 AM
I just signed a petition demanding the Minister of Innovation, Science and Industry Ban X/Twitter in Canada. Join me in signing here: you.leadnow.ca/petitions/ba... you.leadnow.ca/petitions/ba...
This threat tracking southern east of us - missing us by 200 km. One of many near misses this winter for NS, for those complaining about this winter it is nothing compared to what it could of been if the dice rolls were slightly different. #NSstorm
February 20, 2025 at 2:16 PM
This threat tracking southern east of us - missing us by 200 km. One of many near misses this winter for NS, for those complaining about this winter it is nothing compared to what it could of been if the dice rolls were slightly different. #NSstorm
Cleared away 20+ mm WE of ice pellets from my driveway. Changed over to all freezing rain half way through the shoveling. Nothing worse than clearing ice pellets, like moving sand.
Goal was to remove it so it won't act like a sponge and soak up the rain... Hard freeze at 7am #nsstorm #halifax
Goal was to remove it so it won't act like a sponge and soak up the rain... Hard freeze at 7am #nsstorm #halifax
February 17, 2025 at 2:05 AM
Reposted by Brennan Allen
So the 33 days so far this winter with Arctic Sea ice extent at the lowest since 1978-79 got me wondering about when lowest daily occurred throughout the year. Answer: mostly 2016-2020 except 2012 mid-August to early October and 2010 for a short stretch in late June and early July. #Arctic #SeaIce
February 12, 2025 at 9:58 PM
Still one day to go but, with an average January high of -1.6 C and a mean daily temperature of -5.2 C. January 2025 will go down as the coldest in 10 years. Jan 2015 avg high -1.7 C, avg mean -6.8 C. Data from YHZ.Normal Jan avg high is -1.2 C, and avg mean is -5.7 C.
#nsstorm #halifax
#nsstorm #halifax
January 31, 2025 at 1:06 PM
And now is the time to shovel and salt before the temperatures drop!! 🥶 #nsstorm #halifax #hfxtraffic
Roads in Halifax are likely to become very icy again this evening. Temperatures in the city will go above zero by 4-5pm then rapidly fall below zero around 9pm... I know last night was rough. #nsstorm #halifax #HFXtraffic
January 29, 2025 at 9:22 PM
And now is the time to shovel and salt before the temperatures drop!! 🥶 #nsstorm #halifax #hfxtraffic
Roads in Halifax are likely to become very icy again this evening. Temperatures in the city will go above zero by 4-5pm then rapidly fall below zero around 9pm... I know last night was rough. #nsstorm #halifax #HFXtraffic
January 29, 2025 at 5:31 PM
Roads in Halifax are likely to become very icy again this evening. Temperatures in the city will go above zero by 4-5pm then rapidly fall below zero around 9pm... I know last night was rough. #nsstorm #halifax #HFXtraffic
It's been a very dry January. To date Halifax area has seen about 30-40mm of precipitation this month (most of which was rain this past Wkend). Not much more likely for January which averages around 100mm. So Jan likely ~50% of normal precipitation. I suspect the drought will be worse #Nsstorm
January 21, 2025 at 1:17 PM
It's been a very dry January. To date Halifax area has seen about 30-40mm of precipitation this month (most of which was rain this past Wkend). Not much more likely for January which averages around 100mm. So Jan likely ~50% of normal precipitation. I suspect the drought will be worse #Nsstorm
Overnight lows in Halifax generally above or near normal (~ -10C) until next weekend - rain. Then a pattern shift with Arctic air likely for the 3rd week of January. -20C might be on the table and local likes could be safe for skating by the 25th or so... For the first time in 3 years! #nsstorm
January 12, 2025 at 8:58 AM
Overnight lows in Halifax generally above or near normal (~ -10C) until next weekend - rain. Then a pattern shift with Arctic air likely for the 3rd week of January. -20C might be on the table and local likes could be safe for skating by the 25th or so... For the first time in 3 years! #nsstorm
Hey you! Want a career change? ECCC is hiring new meteorologists applications close January 27 2025: emploisfp-psjobs.cfp-psc.gc.ca/psrs-srfp/ap...
Meteorologist Occupational Training Program: MT-01, MT-02, and MT-03
emploisfp-psjobs.cfp-psc.gc.ca
January 6, 2025 at 8:02 PM
Hey you! Want a career change? ECCC is hiring new meteorologists applications close January 27 2025: emploisfp-psjobs.cfp-psc.gc.ca/psrs-srfp/ap...
About 4-5 cm so far in Cornwall PE. Got suckered by downward motion between the coastal NS 850mb fronto and the mid level 700 mb fronto band that formed over eastern -southern NB. #PEstorm
Father at 18cm of heavy snow in Cole harbour. A few more cm on the backend = most over 20cm in HRM. #nsstorm
Father at 18cm of heavy snow in Cole harbour. A few more cm on the backend = most over 20cm in HRM. #nsstorm
December 21, 2024 at 4:38 PM
From a conceptual model point of view. The highest snowfall totals with this upcoming storm will be in southeastern NB, PEI and western-northern NS. The low tracks too close to the Atlantic coast of NS. I've noticed a bias for QPF distribution overly close to low tracks from some guidance. #nsstorm
December 20, 2024 at 2:18 PM
From a conceptual model point of view. The highest snowfall totals with this upcoming storm will be in southeastern NB, PEI and western-northern NS. The low tracks too close to the Atlantic coast of NS. I've noticed a bias for QPF distribution overly close to low tracks from some guidance. #nsstorm