YELLOW ADVISORY - FROST, Oshawa

Persons in or near this area should be on the lookout for adverse weather conditions and take necessary safety precautions. Issued: 10:45 AM EDT Friday 9 October 2026...

#Frost #ONwx #CdnWeather #wx

Latest hourly HRRR run -Radar + cloud cover (>50%) for the rest of the day till midnight. It remains somewhat unstable/unsettled mainly in NE/EONT for the day with scat. pop up showers, elsewhere mix of sun/cloud. #onwx #onstorm

8AM EDT (12Z) Synoptic “Snapshot” summary of
current atmospheric conditions in S. Ontario
Such as-pressure/temp.-fields/frontal locations.
A total precipitation outlook for the day till Midnight
& any active ECCC Alerts at post: None
#onwx #onstorm

8AM EDT (12Z) Synoptic “Snapshot” summary of
current atmospheric conditions in N. Ontario
Such as-pressure/temp.-fields/frontal locations.
A total precipitation outlook for the day till Midnight
& any active ECCC Alerts at post: None
#onwx #onstorm

Multi-model comparison of total rainfall (mm) potential from the ensembles (NBM, WPC, EURO, CAN) for the G.Lake's and SONT from Sat. 8AM thru Mon. 8PM, focus for the left over moisture streaming northward from ISAIAS seem to be the ~N. shore region of L. Erie. #onwx #onstorm (WPC,EURO, CAN attached)

8PM EDT (00Z) Synoptic “Snapshot” summary of current atmospheric conditions in S. Ontario Such as-pressure/temp.-fields/frontal locations. A total precipitation outlook for overnight till 8AM next day & any active ECCC Alerts at post: None #onwx #onstorm

8PM EDT (00Z) Synoptic “Snapshot” summary of
current atmospheric conditions in N. Ontario
Such as-pressure/temp.-fields/frontal locations.
A total precipitation outlook for overnight till 8AM next day & any active ECCC Alerts at post: None
#onwx #onstorm

A quick storm is passing through Kingston.. #ygk #ONwx #ONStorm

One last one before I start my day & slay more dragons 🐉. I combined Graupel production & LTNG⚡️ (cause they go "hand in hand") for the day, so the risk is there for some cells to produce hail & LTNG⚡️ Have a great day! #onwx #onstorm

Latest hourly run of the HRRR- Radar + CAPE 4cast till Midnight. It remains unstable, cooler air aloft , enhanced lake CAPE, approaching TROF-all supporting the development of scat. showers/storms, mainly in SC/EONT. #onwx #onstorm

8AM EDT (12Z) Synoptic “Snapshot” summary of
current atmospheric conditions in S. Ontario
Such as-pressure/temp.-fields/frontal locations.
A total precipitation outlook for the day till Midnight
& any active ECCC Alerts at post: None
#onwx #onstorm

8AM EDT (12Z) Synoptic “Snapshot” summary of
current atmospheric conditions in N. Ontario
Such as-pressure/temp.-fields/frontal locations.
A total precipitation outlook for the day till Midnight
& any active ECCC Alerts at post: None
#onwx #onstorm

Did not get the chance to post this last evening. Stripped away the radar echo's and viewing just the lightning till 9PM last night. (6hr. history)
#onwx #onstorm

Last 12hrs. of Radar Estimated Rainfall (in Inches) from yesterday's showers and storms. (1"of rain=~25mm) #onwx #onstorm

Full lightning video is up. The first half of this 13-minute video features curated highlights capturing the bolts. The second half transitions into a raw, ambient ASMR experience—just the camera rolling uninterrupted

youtu.be/nEfFOojBtY0?...

#ONstorm #ONWX #weather #toronto

Just started to sort through some of the lightning video I took tonight. The storms eventually impacted my location with some impressive roaring thunder and great lightning.

Easily the best nocturnal lightning display of the 2026 season in Toronto. #ONstorm #ONWX #weather #wx

8PM EDT (00Z) Synoptic “Snapshot” summary of
current atmospheric conditions in S. Ontario
Such as-pressure/temp.-fields/frontal locations.
A total precipitation outlook for overnight till 8AM next day & any active ECCC Alerts at
post: None
Better late than never
#onwx #onstorm

8PM EDT (00Z) Synoptic “Snapshot” summary of
current atmospheric conditions in N. Ontario
Such as-pressure/temp.-fields/frontal locations.
A total precipitation outlook for overnight till 8AM next day & any active ECCC Alerts at
post: None
Better late than never
#onwx #onstorm

Oh #hail no!

#onwx #onstorm #Kitchener

8PM EDT (00Z) Synoptic “Snapshot” summary of
current atmospheric conditions in S. Ontario
Such as-pressure/temp.-fields/frontal locations.
A total precipitation outlook for overnight till 8AM next day & any active ECCC Alerts at post: None
#onwx #onstorm