Rather chaotic and messy weather tomorrow for southern Ontario, with the centre of a low passing roughly between Georgian Bay and Lake Erie. Lots of precipitation is predicted, which will bring rain to more southerly areas, and freezing rain/snow to regions further north

Who’s ready for some migration?! Starting today there will be strong Southwesterly winds moving into the province associated with a passing low pressure system. Temps will be near 20C in the southwestern part of the province for several days!

It’s early yet to get too excited… but potential for some very exciting early spring weather during the 2nd week of March. Stay tuned!

South winds and (relatively) warm temperatures brought a trickle of spring migrants into the southern part of the province today. The winds are shifting north tonight though, as the passing low moves into northern Quebec… followed by the arrival of high pressure on Sunday… so expect a slower weekend

Some spring migrants showing up in southwestern Ontario this week… Tundra Swans in multiple locations, including over 100 in Lambton Wood Ducks in multiple spots 11 Ross’s Geese in Lambton, Snow Geese in a few locations Killdeer in Essex and CK Decent early season push of blackbirds

A broad Montana low will track across Ontario on Wednesday after impacting the Prairies earlier in the week, spreading some complex and mixed precipitation signals. #ONstorm #ONwx https://ow.ly/OF3r50YgbzW

Spring migration… coming soon to a town near you?! Well not quite, but for birders in the depths of winter there may be some small migration excitement over the next week. Above seasonal temps are likely for the next week+, as several systems of low pressure move through the Great Lakes region

Potentially interesting setup. Strong winds aloft coming from James Bay for the next few days and feeding into the Great Lakes. Never know what these late season storms could bring down… maybe a Common Eider?👀

Some pretty wild winds & waves on Lake Erie today and tomorrow…

Tomorrow could be a pretty interesting day for lakewatching on the southern end of Lake Huron👀. Sabine’s Gull and Brant seen today… these November blows are a good time to see rare species such as Pomarine Jaeger and Black-legged Kittiwake

tomorrow will bring a nice weather change to Southern Ontario, with cool temps and north winds. This comes after a week of poor hawkwatching conditions in the Southwestern part of the province. Locations along the North shore of Lake Erie and Lake Ontario should be productive

As you might expect from the very strong -IOD event strengthening La Nina’s footprint globally, this October’s observed pattern has deviated very little from the last 30 years worth of La Ninas over N America

I thought I’d share some of my thoughts about the weather over the next few days, particularly in relation to the recent Cave Swallow influx (just my take too, so take it for what it is haha)… day by day breakdown in the comments

Tomorrow looks quite promising for a lakewatch on southern Lake Huron! Good time of year for Red Phalarope, Brant and maybe some other interesting species

Nice hawkwatching conditions in southern Ontario today… light northeast winds and a mainly sunny sky

Things are shaping up for a potentially interesting few days on Lake Huron later this week… North winds connecting James Bay to the Great Lakes, strong northwest wind for lower Lake Huron + a cold front. Definitely worth keeping an eye on from a lakewatching perspective

Wild storm moving through ON today… 20C or more in places, baro down to 992 hPa. Interesting weather for late Oct!

Very good hawkwatching conditions for southern Ontario right now! The shorelines of Lake Erie and Lake Ontario should be particularly productive

Cold front incoming! Expect a major changeover of migrant species over the next few days. Many warblers, vireos and other lingering migrants will be leaving the province for the year… while later migrants such as longspurs, sparrows and more arriving

Tonight and tomorrow night are quite favourable for nocturnal songbird migration, with light winds and clear skies. Expect a good surge of migrants moving into the weekend

This afternoon should be quite productive at Van Wagner’s Beach and surrounding areas in Hamilton! Strong east winds all day there

Tomorrow has the potential for good hawkwatching across southern Ontario ~ particularly along the shorelines of Lake Erie and Lake Ontario. The wind speed will definitely play a roll in how the flight plays out along the shoreline, especially factoring in the potential for lake breeze in the PM

Decent conditions for lakewatching in Hamilton over the next two days ~ moderate east winds both afternoons. I don’t think it’ll be too crazy, but likely some jaegers & a Sabine’s Gull or two : )

Tomorrow could be a good hawkwatching day along the north shore of Lake Erie and Lake Ontario, with a steady north wind for most of the morning/into the afternoon and clear skies. It will depend on how long the winds retains a northerly component though (it is meant to shift east eventually)

Good conditions tonight for a strong nocturnal migration across Ontario! Very light winds with a slight northerly components in most areas & no rain in the way. Expect a nice influx of migrants : )

Not expecting anything too crazy ~ but tomorrow could be interesting for lakewatching on southern Lake Huron

Still a bit early to say how things will play out, but this cold front (arriving sometime around Thursday morning) is worth keeping an eye on… could be potentially quite interesting for lakewatching on Lake Huron

Some impressive shorebird numbers across Ontario today due to passing rain… mainly Simcoe and further east. 1000+ American Golden-Plovers in Simcoe stands out 👀

Fantastic migration conditions for the next several days ~ mainly clear skies, cool temps and long distance wind from the north… expect a large uptick of migrants across the province!

Solid migration conditions throughout most of Ontario tonight ~ cooler temps and north winds. There should be a nice influx of boreal breeders into the province tomorrow : )

Decent movement on radar tonight! There should be an uptick in songbirds across southern Ontario over the next few days

Lakewatching in Hamilton could be interesting tomorrow 👀 Still quite early in the season so it will likely be pretty quiet, but there could be some good birds! Maybe the first jaeger of the season

With the warmer-than-usual waters of the Great Lakes and a cooler air mass hovering over the region, the risk for waterspouts and lake-effect showers will be elevated for Erie and Ontario on Wednesday. #ONstorm #ONwx www.theweathernetwork.com/en/news/weat...

There should be an increase of boreal breeding songbirds across southern parts of Ontario tomorrow ~ clear skies overnight after today’s cold front and strong northeast winds coming all the way from northern Quebec.

Potentially interesting lakewatching conditions for the southern end of Lake Huron today!

Potential for some downed shorebirds with this large storm system ~ checking shorelines/lagoons first thing tomorrow could be productive.

It’s getting to be that time of year when you closely watch the progress of tropical storm activity over the Atlantic 👀

Potential for shorebirds to be grounded by passing thunderstorms today. Keep an eye out if you’re around the Lake Huron/Georgian Bay Area : )

Potential for shorebirds to be grounded across southwestern Ontario as thunderstorms move across the region. Keep in mind birds often leave soon afer the weather improves

Major thunderstorm passing this afternoon ~ good potential for grounding shorebirds/interesting species along Lake Huron

Fast moving thunderstorm predicted to move over Lake Huron early tomorrow morning. Good conditions for shorebirds to be grounded! Get out and check your local shorelines/lagoons if you’re in the path of the storm

⚠️ BREAKING 🌪️: Environment Canada forecasting tornado risk, 90-110km/h wind gusts, 2-4cm hail & 30-50mm of rainfall for parts of Ontario tomorrow, Sat, June 21, 2025. The main risk is in the evening near Georgian Bay based on the latest model data. More details ASAP. - Adam #ontario #onstorm

#ONStorm #ONwx 🟡⛈️ Severe Storms Target Southwestern Ontario Wednesday with Tornado and Damaging Wind Risk 📅 Wednesday, June 18, 2025 ⤵️ VIEW THE FULL FORECAST: instantweatherinc.com/article/onta... - Brennen

Some interesting weather over the next few days… strong long distance SW winds coming from the southern US. Promising for late season vagrants arriving in the province

Aurora Forecast Update for 2025-06-02T01:40:10Z ALERT: Geomagnetic K-index of 5 Threshold Reached: 2025 Jun 02 0135 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes NOAA Scale: G1 - Minor Additional Details Here.

Cold temperatures for the next week or so in Ontario… no major migration pushes in the near future for us anyways

Very good migration conditions for southwestern Ontario overnight tonight! Strong long distance SW winds will bring large numbers of new arrivals. There will likely be a thunderstorm passing in the night as well

#ONStorm #ONwx ⛈️💨 Nocturnal Thunderstorm Threat With Damaging Wind Gusts and Isolated Tornado Risk for Southwestern Ontario Tonight 📅 Thursday, May 15 - Friday, May 16, 2025 ⤵️ VIEW THE FULL FORECAST: instantweatherinc.com/article/onta... - Brennen

The winds on Thursday and Friday nights are currently looking very exciting from an Ontario birding perspective! Long distance wind/warm air form the southern US associated with a passing low pressure system… peak weather for fun birding/rarities in May! The next week should be interesting…