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

Quick look at the current radar loop from the overnight till 6:37 AM EDT-rain continues to move ENE thru SONT. Back edge showing up in N & W of SWONT. A quick look at Radar Estimated rainfall (in inches) last 12 hrs. till 6AM-some random spot checks/values. (attached to post) #onwx #onstorm

Current HRRR 0Z run -Radar 4cast + Total rainfall "trail" (in inches-scale on top) look's like most places will get a decent shot of rain overnight. #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

Shot of colder air late Sunday thru Tues for Ontario.-But short lived. (blue=below 0C, Black= at 0C, warm colours=above 0C,-all at 850mb) added mid-level (500mb) contours for air flow. ''Tis the season"...now that it's October.🍂🍁🎃 #onwx #onstorm

Latest 12Z run of the HRRR18 -radar 4cast-from ~now till 2AM Fri. During the day- patchy light showers, a more concentrated "bunch" later today into the overnight, -main focus is the lower 3rd of SWONT. #onwx #onstorm

Latest regional Great Lakes radar composite-zoomed into SONT. Area of patchy, light showers moving thru SONT, almost due east. On/off showers during the day, more showers arrive later today into the overnight thru SONT. #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:
shorturl.at/0k5Qo -local fog
#onwx #onstorm

The just in HRRR model-Radar 4cast + added total rainfall "trail"-(in inches-colour scale at top) from ~now till 8PM Fri. A fairly active & moderately strong Low & cold front will ride an upper level impulse & develop a large area of rain/showers/storms? for Fri. #onwx #onstorm

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