Latest Radar + Water Vapour imagery loop keeps the bulk the moisture (scattered light showers) in the ~lower third of SWONT to Niagara for the overnight into Thurs. morning, but the risk for a few light showers will be there for the rest of SONT. (3-8mm SWONT) #onwx #onstorm

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

Latest hourly run of the National Blend of Models (Ver. 5.0)-Radar (super blend) + cloud cover% (>50% & up) 4cast -from ~now till Thurs. 8AM. Look's like patchy areas of showers move's into S. NEONT and SONT, again more focused in SWONT. #onwx #onstorm

Latest radar/satellite loop for the Great Lakes zoomed down to SONT. Scat. Area of showers continues to move thru MI moving East at 50 to 60 k/hr. #onwx #onstorm

Tropical rainfall in southern Ontario will end the region's record fall dry spell this week, with the most intense precipitation expected Friday morning along the 401 corridor. #ONstorm #ONwx

https://ow.ly/Q0F650ZT0EL

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

The NTP has confirmed a tornado in northwestern Ontario on September 8 based on satellite imagery review. The tree damage has been assigned an EF1 rating.

Full details at the NTP blog here: www.uwo.ca/.../2026/tor...

#ONstorm

Latest 0Z of the National Blend of Models (NBM Ver. 5.0) run -Radar (super blend) + cloud cover% (I only plot >50% & up) 4cast from ~now till Thurs. 8AM. Scattered showers move into SONT mid-Aft. #onwx #onstorm

Some model comparison for total rainfall expected from ~now till Sat. 8AM. 3 ensemble, 1 ens. AI (EURO), focus seems to be ~S. sections of SWONT overall. #onwx #onstorm

Latest radar/satellite loop for the Great Lakes. Scat. Showers continue in parts of NWONT into NEONT and the far north, all moving ENE. #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

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

Latest regional Great lakes Radar composite, showers and a few isolated storms moving NE thru NWONT into NEONT-Active weather remains in NONT for the day. #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:
shorturl.at/bpRg3 -fog
#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:
shorturl.at/RNJDM -fog
#onwx #onstorm

Latest hourly run of the National Blend of Models (NBM Ver. 5) -Radar (blend) + Cloud cover% (I only plot >50% & up) 4cast ~now till Midnite Tues. Scat. showers/storms expected in NWONT & increasing high/mid level cloud for elsewhere. Mix Sun/Cloud for SONT #onwx #onstorm

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