At 850mb, yes. But at the surface it could be a fog bowl.
September 28, 2026 at 1:26 AM
At 850mb, yes. But at the surface it could be a fog bowl.
In fact, this will approach the Jun 2021 PacNW/BC heat event in terms of meteorological anomalousness (though not, fortunately, in terms of absolute surface temperatures. It is still *March*, after all!) Western snowpack, however, will plummet at an unprecedented pace.
March 15, 2026 at 10:48 PM
In fact, this will approach the Jun 2021 PacNW/BC heat event in terms of meteorological anomalousness (though not, fortunately, in terms of absolute surface temperatures. It is still *March*, after all!) Western snowpack, however, will plummet at an unprecedented pace.
Certains sont un peu anciens, backup-és, mais fonctionnent toujours comme ce Maxtor de 850MB
March 22, 2025 at 11:15 AM
Certains sont un peu anciens, backup-és, mais fonctionnent toujours comme ce Maxtor de 850MB
Cutoff low... weatherman's woe.
Simulated 850mb temps for Thursday morning. ECMWF vs. HRRR. Pick your poison.
Ultra tricky temperature forecast for California on Thursday. #CAwx
Simulated 850mb temps for Thursday morning. ECMWF vs. HRRR. Pick your poison.
Ultra tricky temperature forecast for California on Thursday. #CAwx
February 25, 2025 at 7:59 PM
Cutoff low... weatherman's woe.
Simulated 850mb temps for Thursday morning. ECMWF vs. HRRR. Pick your poison.
Ultra tricky temperature forecast for California on Thursday. #CAwx
Simulated 850mb temps for Thursday morning. ECMWF vs. HRRR. Pick your poison.
Ultra tricky temperature forecast for California on Thursday. #CAwx
As if the cool air mass ending August wasn't impressive enough, a highly amplified western North American ridge is likely to transport a much cooler airmass into CONUS to start September, with impressive probabilities for well below normal heights & 850mb temps:
August 29, 2025 at 11:20 PM
As if the cool air mass ending August wasn't impressive enough, a highly amplified western North American ridge is likely to transport a much cooler airmass into CONUS to start September, with impressive probabilities for well below normal heights & 850mb temps:
It will likely be just as unusual as the bonkers 2021 Pacific NW heatwave.
The map from @burgwx shows 850mb (5,000 ft) temperature records. The magenta shows where this heat will break records - Almost everywhere - through early next week. 2/
The map from @burgwx shows 850mb (5,000 ft) temperature records. The magenta shows where this heat will break records - Almost everywhere - through early next week. 2/
March 16, 2026 at 12:36 AM
It will likely be just as unusual as the bonkers 2021 Pacific NW heatwave.
The map from @burgwx shows 850mb (5,000 ft) temperature records. The magenta shows where this heat will break records - Almost everywhere - through early next week. 2/
The map from @burgwx shows 850mb (5,000 ft) temperature records. The magenta shows where this heat will break records - Almost everywhere - through early next week. 2/
Not only does that break the all-time monthly 850mb record for March (which was just set earlier this week!), but it also beats the record for April, too. It's just one more way to put the sheer scale of this heat wave into context beyond just s... https://x.com/NWSBayArea/status/2035083758437609896
March 20, 2026 at 8:54 PM
Not only does that break the all-time monthly 850mb record for March (which was just set earlier this week!), but it also beats the record for April, too. It's just one more way to put the sheer scale of this heat wave into context beyond just s... https://x.com/NWSBayArea/status/2035083758437609896
Below are the 9 Nov 12Z, 10 Nov 00Z and 12Z, and 11 Nov 00Z 850 mb upper air charts. Heights (m) are in black, while temperature (C) is in dashed red. Also, station plots with wind barbs are shown. 58/
November 11, 2023 at 1:32 AM
Below are the 9 Nov 12Z, 10 Nov 00Z and 12Z, and 11 Nov 00Z 850 mb upper air charts. Heights (m) are in black, while temperature (C) is in dashed red. Also, station plots with wind barbs are shown. 58/
Where's the cold air? -I know it's the GFS, & it's waaaaay past its reliability at 384 hrs.-but, Euro, CMC, ensembles tell the same story. Anyway,-Colour fill is temps at 850mb (~5K ft.)+500mb HGTS/flow. Black line=0C at 850mb, blue=below 0C -lot's of warmth still #onwx #onstorm
September 20, 2025 at 2:02 PM
Your up coming week S. Ontario - Warm daytime temps, cool nights -that yellow zig-zag line is the ~approx. mean location of the mid-level ridge (500mb). Plotted: 850mb temps (~5Kft up) -warm colours=warmth, blue=cold, black line=0C (850mb) #onwx #onstorm Loop now till Oct. 3-Fri.
September 28, 2025 at 11:10 PM
🌡️🌡️850mb TEMPERATURE UPDATE: This evenings OAK balloon launch measured 22.8C at 850mb, setting the all time March record. For perspective, the next daily max that high in the SPC sounding climatology (1948-current) isn't until mid-May... https://x.com/NWSBayArea/status/2034852010143465528
March 20, 2026 at 4:56 AM
🌡️🌡️850mb TEMPERATURE UPDATE: This evenings OAK balloon launch measured 22.8C at 850mb, setting the all time March record. For perspective, the next daily max that high in the SPC sounding climatology (1948-current) isn't until mid-May... https://x.com/NWSBayArea/status/2034852010143465528
I also brought back maps showing ensemble probability of geopotential height below or above various percentile ranks (left: 500mb height below 10th percentile).
New on this version of PolarWx is 850mb temperature percentile rank probabilities (right: 850mb temp below 0.5th percentile).
New on this version of PolarWx is 850mb temperature percentile rank probabilities (right: 850mb temp below 0.5th percentile).
January 19, 2025 at 3:40 PM
I also brought back maps showing ensemble probability of geopotential height below or above various percentile ranks (left: 500mb height below 10th percentile).
New on this version of PolarWx is 850mb temperature percentile rank probabilities (right: 850mb temp below 0.5th percentile).
New on this version of PolarWx is 850mb temperature percentile rank probabilities (right: 850mb temp below 0.5th percentile).
Nerd alert: that is some serious cooling at Fairbanks between the 12Z Tuesday and 00Z Wednesday RAOBs. Cooled ~14C at 925 mb & 850mb #akwx #weather @climatologist49.bsky.social
February 25, 2026 at 3:50 AM
Nerd alert: that is some serious cooling at Fairbanks between the 12Z Tuesday and 00Z Wednesday RAOBs. Cooled ~14C at 925 mb & 850mb #akwx #weather @climatologist49.bsky.social
Looking ahead, it continues to appear that Aug will be much warmer overall in most of CA than Jun or Jul (& anomalously warm overall). That said, there has been tendency for modeling to underestimate magnitude of offshore troughing/cool coastal influence so far this season. #CAwx
August 5, 2025 at 3:03 PM
Looking ahead, it continues to appear that Aug will be much warmer overall in most of CA than Jun or Jul (& anomalously warm overall). That said, there has been tendency for modeling to underestimate magnitude of offshore troughing/cool coastal influence so far this season. #CAwx
Consuming just zstd compressed posts from Jetstream downloads only ~850MB/day or 25.5GB/mo
The full firehose requires downloading~95GB/day or ~2.85TB/mo
It's probably incredibly worthwhile to migrate any bots and such you have to Jetstream if you're brave enough. Should have a prod instance soon.
The full firehose requires downloading~95GB/day or ~2.85TB/mo
It's probably incredibly worthwhile to migrate any bots and such you have to Jetstream if you're brave enough. Should have a prod instance soon.
Okay cool so with some tweaks I've got the per message weights:
482B -> 211B
Using a custom zstd dictionary trained on 100k events
Also got the throughput back up so the compressed vs decompressed clients don't have any difference in load on the server
Requires 2x the storage tho on the server
482B -> 211B
Using a custom zstd dictionary trained on 100k events
Also got the throughput back up so the compressed vs decompressed clients don't have any difference in load on the server
Requires 2x the storage tho on the server
September 22, 2024 at 7:36 AM
Consuming just zstd compressed posts from Jetstream downloads only ~850MB/day or 25.5GB/mo
The full firehose requires downloading~95GB/day or ~2.85TB/mo
It's probably incredibly worthwhile to migrate any bots and such you have to Jetstream if you're brave enough. Should have a prod instance soon.
The full firehose requires downloading~95GB/day or ~2.85TB/mo
It's probably incredibly worthwhile to migrate any bots and such you have to Jetstream if you're brave enough. Should have a prod instance soon.
But how *unusual* is this cold? This loop shows the 850mb temperature percentile rank vs. a 3-week centered climatology.
Deep blue colors show where this airmass is near record cold for this time of year - which is basically a huge swath of the US:
Deep blue colors show where this airmass is near record cold for this time of year - which is basically a huge swath of the US:
January 22, 2025 at 2:29 AM
But how *unusual* is this cold? This loop shows the 850mb temperature percentile rank vs. a 3-week centered climatology.
Deep blue colors show where this airmass is near record cold for this time of year - which is basically a huge swath of the US:
Deep blue colors show where this airmass is near record cold for this time of year - which is basically a huge swath of the US:
So this 850MB HDD transfers at 1.3MB/s and takes 10 minutes to backup🤡
November 13, 2025 at 4:31 PM
So this 850MB HDD transfers at 1.3MB/s and takes 10 minutes to backup🤡
Reloading...and Reloading & Reloading the cold. Temps at 850mb °F (or ~5Kft.) + Mid level HGTS and flow.
BTW the hole in the data, is not the Ozone hole, or the Polar Vortex, or a Vacuum hole. its so cold, my temp scale couldn't cut it-only goes to -30°F at 850mb, Darn! #onwx #onstorm
BTW the hole in the data, is not the Ozone hole, or the Polar Vortex, or a Vacuum hole. its so cold, my temp scale couldn't cut it-only goes to -30°F at 850mb, Darn! #onwx #onstorm
December 30, 2024 at 2:51 PM
Really @microsoft.com ?
850MB for a godamn photo viewer that is slower and has a worse UX than the one shipped with Windows XP ?!
850MB for a godamn photo viewer that is slower and has a worse UX than the one shipped with Windows XP ?!
April 8, 2025 at 12:52 PM
Really @microsoft.com ?
850MB for a godamn photo viewer that is slower and has a worse UX than the one shipped with Windows XP ?!
850MB for a godamn photo viewer that is slower and has a worse UX than the one shipped with Windows XP ?!
850MB für ne dumme Software die Bilder einscannen aber nicht mal selbstständig nen schwarzen Rand entfernen kann Computerkram 2024 ist echt so ein Scam
April 14, 2024 at 2:06 PM
850MB für ne dumme Software die Bilder einscannen aber nicht mal selbstständig nen schwarzen Rand entfernen kann Computerkram 2024 ist echt so ein Scam
The westerly wind burst earlier in the month was pretty strong and is worth a further dive into the data/better analysis. Quick glance at Reanalysis daily data in Nov, for the equatorial 850mb zonal wind anomaly at 120°W since 1950, shows it was the strongest since the 1997 and 1998 November events.
November 21, 2024 at 9:14 PM
The westerly wind burst earlier in the month was pretty strong and is worth a further dive into the data/better analysis. Quick glance at Reanalysis daily data in Nov, for the equatorial 850mb zonal wind anomaly at 120°W since 1950, shows it was the strongest since the 1997 and 1998 November events.
#Iberia #Gibraltar #SaharanDust #Calima - update 06/09
As MeteoGib has been posting the last few days, that plume of hotter air and Saharan dust continues to affect the peninsula today and has extended further North across Western Europe towards the #UK
850mb Temp Anomaly (~5,000ft) included 👇
As MeteoGib has been posting the last few days, that plume of hotter air and Saharan dust continues to affect the peninsula today and has extended further North across Western Europe towards the #UK
850mb Temp Anomaly (~5,000ft) included 👇
September 6, 2026 at 10:21 AM
#Iberia #Gibraltar #SaharanDust #Calima - update 06/09
As MeteoGib has been posting the last few days, that plume of hotter air and Saharan dust continues to affect the peninsula today and has extended further North across Western Europe towards the #UK
850mb Temp Anomaly (~5,000ft) included 👇
As MeteoGib has been posting the last few days, that plume of hotter air and Saharan dust continues to affect the peninsula today and has extended further North across Western Europe towards the #UK
850mb Temp Anomaly (~5,000ft) included 👇
What is the different in size between using low poly assets vs lots of vertices assets?
Level 1 (the house, if you doubt, the one with the piano): 850Mb
Level 3 (the castle): 5.4Mb
Punch line: the definition depends on the distance to the camera
#IndieDev #GameDev #solodev #GodotEngine #gamedevs
Level 1 (the house, if you doubt, the one with the piano): 850Mb
Level 3 (the castle): 5.4Mb
Punch line: the definition depends on the distance to the camera
#IndieDev #GameDev #solodev #GodotEngine #gamedevs
August 1, 2025 at 7:23 AM
What is the different in size between using low poly assets vs lots of vertices assets?
Level 1 (the house, if you doubt, the one with the piano): 850Mb
Level 3 (the castle): 5.4Mb
Punch line: the definition depends on the distance to the camera
#IndieDev #GameDev #solodev #GodotEngine #gamedevs
Level 1 (the house, if you doubt, the one with the piano): 850Mb
Level 3 (the castle): 5.4Mb
Punch line: the definition depends on the distance to the camera
#IndieDev #GameDev #solodev #GodotEngine #gamedevs
** S.E.C.S. ALERT ** DEC 7-8. (SECS (Significant East Coast Snowstorm). The last 2 runs of op-GFS-specifically the 18z Fri and 0z Sat runs.
Recall Rule #1 - Weather Models with "LOW"s or blue colors do NOT make Winter storms; the 850mb/ 700mb/ 500mb/ 200mb DO. So lets look part 2
#wxtwitter
Recall Rule #1 - Weather Models with "LOW"s or blue colors do NOT make Winter storms; the 850mb/ 700mb/ 500mb/ 200mb DO. So lets look part 2
#wxtwitter
November 30, 2024 at 7:31 AM
** S.E.C.S. ALERT ** DEC 7-8. (SECS (Significant East Coast Snowstorm). The last 2 runs of op-GFS-specifically the 18z Fri and 0z Sat runs.
Recall Rule #1 - Weather Models with "LOW"s or blue colors do NOT make Winter storms; the 850mb/ 700mb/ 500mb/ 200mb DO. So lets look part 2
#wxtwitter
Recall Rule #1 - Weather Models with "LOW"s or blue colors do NOT make Winter storms; the 850mb/ 700mb/ 500mb/ 200mb DO. So lets look part 2
#wxtwitter