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Rob’s Obs @robsobs.bsky.social · 28/03/2026

This is just absurd. Flagstaff AZ has gone 10 straight days with record highs above their previous all time MONTHLY MAXIMUM for March (73F). No stretch this warm has ever been recorded there even in April! You have to go to early May to get warmer values. Data back to 1893. An unprecedented event.

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Rob’s Obs @robsobs.bsky.social · 27/03/2026

Crazy stats from Flagstaff AZ. Today will be their TENTH day in a row with a highs greater than their previous all time monthly March maximum of 73F. The week of Mar 18-24 averaged highs of 78F, more typical of mid June, and a full 10F greater than the next warmest week. Historic early heat wave.

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Rob’s Obs @robsobs.bsky.social · 27/03/2026

Record hottest March day in Kansas.. 104F (40C) in Hugoton. Beats previous March record of 101F (38C) set 5 days ago. Also 104F (40C) at Ashland via KSU mesonet network if verified. Other notable hot spots: Medicine Lodge: 103F Liberal: 102F

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Rob’s Obs @robsobs.bsky.social · 27/03/2026

106F (41C) at Beaver OK today via OK mesonet. Sets new record for hottest all time March temperature for Oklahoma, beating old record of 104F (40C) from 1971

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Rob’s Obs @robsobs.bsky.social · 23/03/2026

As of today (Mar 22), Flagstaff AZ has recorded 5 straight days with max temps above its previous all time March monthly maximum (73F) NWS is forecasting another 6 straight days > 73F. Exceeding a monthly max for 11 straight days must be some sort of climate record. Off the chart stuff.

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Rob’s Obs @robsobs.bsky.social · 23/03/2026

As of today (Mar 22), Flagstaff has recorded 5 straight days with max temps above its previous all time March monthly maximum (73F) NWS is forecasting another 6 straight days > 73F. Exceeding a monthly max for 11 straight days must be some sort of climate record. Off the chart stuff.

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Rob’s Obs @robsobs.bsky.social · 22/03/2026

Quite the temperature gradient across the Ohio Valley today. 40-50F near Lake Erie, 80-85F southern OH/SW PA.

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Rob’s Obs @robsobs.bsky.social · 22/03/2026

I see that Superior, Nebraska had a max of 101F on March 21 1907 during another notable March heat wave. Is that not valid?

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Rob’s Obs @robsobs.bsky.social · 21/03/2026

96F (36C) in Lincoln NE as of 3 pm CDT March 21st. That's 40F above their average high of 56F/13C for this date. It exceeds their hottest March temp by 5F (old record was 91F) Earliest 95F by a month (prev earliest 95F was Apr 20) Insane early season heat in the US plains today

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Rob’s Obs @robsobs.bsky.social · 21/03/2026

March madness! Forecast highs (F) across the US plains today (March 21) 90s into SD. 98F for NE and KS. Over 100F for OK/TX. This graphic would be a warm day for June. MARCH??? Absolutely insane.

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Rob’s Obs @robsobs.bsky.social · 21/03/2026

This March heat wave over the SW US is mind boggling. Before this event, Flagstaff's all time March high was 73F. They have exceeded that mark the past 3 days, and are expected to exceed it for at least the next 7 days! Breaking your all time monthly record 10 days in a row?! I've never seen that.

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Rob’s Obs @robsobs.bsky.social · 19/03/2026

Historic March heat wave baking the southwest US. Currently 107F in Thermal CA as of 1 pm local time. On pace to hit 111F this afternoon which would be the hottest March temperature ever recorded in the US. (current record is 108F)

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Rob’s Obs @robsobs.bsky.social · 07/02/2026

Dramatic push of ice cover on Lake Erie due to strong NW winds last night into this morning. MODIS satellite imagery today (Feb 7) vs 3 days ago (Feb 4)

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Rob’s Obs @robsobs.bsky.social · 06/02/2026

A record high of 18.0C in Calgary AB today, beats previous record for Feb 5th of 17.4C in 1984. It’s the earliest in the year they’ve ever hit 18.0C or more (previous earliest date was Feb 12 1934) and ranks as Calgary’s 8th warmest February day on record (data since 1885)

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Rob’s Obs @robsobs.bsky.social · 05/02/2026

A fine looking early February day in southern AB. Already 15C as of 10:40 am with beautiful blue skies, and a gusty southwest wind. Heading up to a record 20C this afternoon.

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Rob’s Obs @robsobs.bsky.social · 05/02/2026

Canadian snowbirds don't have to head to Florida for warmth this winter.. head to southern Alberta instead! Temperatures expected to hit the 20C mark today in south AB while Florida struggles in the low to mid teens this aftn. A good example of the warm west/cold east pattern we've been having

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Rob’s Obs @robsobs.bsky.social · 05/02/2026

Incredibly mild early February day in southern AB. Several sites hit the 20C mark, including Lethbridge with a record high of 20.6C, 2nd warmest Feb temp on record there (21.8C on Feb 27 1992) Hot spot was Hays at 21.3C. Calgary tied a daily record high for Feb 4th at 16.2C (tied with 1992)

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Rob’s Obs @robsobs.bsky.social · 04/09/2025

All time hottest September temperature for Canada set today at Ashcroft BC with a sizzling 40.8C. Beats previous record of 40.0C set in Morden MB (Sep 1906), Lost River SK (Sep 1940) and Lytton BC (Sep 2025) (TWN graphic)

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Rob’s Obs @robsobs.bsky.social · 01/07/2025

Areas of heavier rainfall across Niagara over past 24 hours brought 25-50 mm over localized areas. Otherwise only 5-10 mm between heavier bands with less than 5 mm west of Grimsby.

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Rob’s Obs @robsobs.bsky.social · 28/06/2025

One lone band of cumulus clouds over Niagara nicely marks convergent zone between Lake Erie and Lake Ontario lake breezes this afternoon

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Rob’s Obs @robsobs.bsky.social · 28/06/2025

CoCoRaHS report from Morriston ON, east of Cambridge.. 90 mm of rain last night in less than 90 minutes

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Rob’s Obs @robsobs.bsky.social · 28/06/2025

Quite the soaker through the Cambridge area last night.. upwards of 75-100 mm of rain reported, much of it falling between 10 pm and 1 am.

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Rob’s Obs @robsobs.bsky.social · 26/06/2025

Area of showers over Lake Ontario will clip north St Catharines into NOTL over the next hour. Heads up if your boating in this area for some gusty showers moving in.

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Rob’s Obs @robsobs.bsky.social · 26/06/2025

Quite the soaker across parts of Niagara this morning. Heavier cells early this morning gave 30-50 mm of rain through the Niagara Falls-Chippawa area in just over an hour. (Radar image from 530 am)

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Rob’s Obs @robsobs.bsky.social · 24/06/2025

33-36C temps over much of Niagara this afternoon.. except 28C near Lake Erie. Last day of the really hot stuff before less oppressive conditions Wednesday

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Rob’s Obs @robsobs.bsky.social · 24/06/2025

One more day of oppressive heat and humidity over Niagara today with highs of 35C over north Niagara to 28C near Lake Erie. A slight chance of showers or thunderstorms later today into tonight then not as hot Wednesday

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Rob’s Obs @robsobs.bsky.social · 23/06/2025

St Catharines already up to 29C as of 9 am. Likely hitting a record high 35C this afternoon. Recall that two days ago Env Canada was forecasting a *high* of only 27C for St Catharines for today. Faulty forecast algorithm leading to poor temperature forecasts in Niagara.

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Rob’s Obs @robsobs.bsky.social · 22/06/2025

Lake Erie lake breeze has pushed up into northern Niagara as of 2 pm marked by edge of CU field. That has stabilized temperatures in the 27-30C range over south Niagara while 32-35C heat continues over north Niagara

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Rob’s Obs @robsobs.bsky.social · 21/06/2025

Env Canada drastically underforecasting max temps for Niagara especially Monday and Tuesday. Actual highs will be some 8C above current forecast highs. I suspect this will be adjusted on subsequent forecasts..

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Rob’s Obs @robsobs.bsky.social · 21/06/2025

My forecast highs across Niagara Sunday through Tuesday. Hottest temps will across northern Niagara with highs of 33-36C each day. A bit cooler over south Niagara with SW flow off Lake Erie giving temps of 27-32C. Humidex values of 35-45C each day. Stay cool!

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Rob’s Obs @robsobs.bsky.social · 21/06/2025

Oddly, Env Canada drops forecast highs for Niagara on Mon/Tue to 26-27C after issuing heat warning for highs of 31-36C through Tuesday. Very inconsistent messaging there.. 🤔🤷🏼‍♂️

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Rob’s Obs @robsobs.bsky.social · 21/06/2025

Quite the heatwave coming up for Niagara and GTA. Highs of 32-35C Sunday-Tuesday with peak humidex values in the 40-45C range. Likely hottest stretch of June weather in Niagara since June 2012.

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Rob’s Obs @robsobs.bsky.social · 18/06/2025

Rainfall accumulation map based on personal weather station observations in St Catharines area. Most of this fell between 2 and 330 pm.

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Rob’s Obs @robsobs.bsky.social · 18/06/2025

Quite the deluge over St Catharines over the past hour. Generally 25-50 mm over central and northern parts of the city.. much less to the south

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Rob’s Obs @robsobs.bsky.social · 23/05/2025

Rain has finally ended in Niagara after 2 straight days of steady rainfall. 2 day totals of 40-70 mm across Niagara, Hamilton and Haldimand areas. #ONstorm

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Rob’s Obs @robsobs.bsky.social · 22/05/2025

UPDATED rainfall totals across Niagara, Hamilton and Haldimand areas as of 5 pm May 22, since yesterday. Generally 30-60 mm of rain has fallen across the area.. heaviest amounts over west Niagara, Hamilton and Haldimand areas where 50-70 mm of rain has been reported. Creeks running high and fast.

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Rob’s Obs @robsobs.bsky.social · 22/05/2025

MRMS radar accumulation product estimates over 70 mm of rain has fallen since yesterday in downtown Hamilton.. corroborated by personal weather sites in the area. Likely some flooding issues there..

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Rob’s Obs @robsobs.bsky.social · 22/05/2025

Updated rainfall totals as of noon across Niagara and Hamilton/Haldimand areas. Generally 30-50 mm of rain across Niagara so far with 45-60 mm over west Niagara/Haldimand into Hamilton areas. Light rain continues this afternoon into tonight with another 5-10 mm possible before tapering off Friday

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Rob’s Obs @robsobs.bsky.social · 14/05/2025

Another day of record early heat over srn MB (May 13). Winnipeg's 37.0C is the earliest they've ever hit that temperature and ties May 22 1980 as 2nd hottest May day on record. Heat was accompanied by very low humidity (as low as 13%) and winds gusting to 70 km/h.. extreme fire weather conditions

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Rob’s Obs @robsobs.bsky.social · 13/05/2025

Max of 37.0C (99F) today, ties second hottest May temperature on record in Winnipeg. Data since 1872.

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Rob’s Obs @robsobs.bsky.social · 13/05/2025

Canada.. the land of extremes. While southern MB is dealing with extreme heat and out of control wildfires (see image showing smoke plumes from fires over SE MB), Goose Bay NL was digging out of a record 40 cm snowfall on May 11! Crazy contrast for mid May!

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Rob’s Obs @robsobs.bsky.social · 11/05/2025

Emerson MB up to 37.8C (100F) as of 2:55 pm local time

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Rob’s Obs @robsobs.bsky.social · 11/05/2025

Crazy early season heat along the Red River valley in ND/MN and southern MB. Up to 100F (38C) in Hallock MN, 99F (37C) in Grand Forks, ND and 37.0C (99F) in Emerson MB as of 240 pm local time. All record highs for May 11.

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Rob’s Obs @robsobs.bsky.social · 03/04/2025

24 hr precip totals (mm) across southern Ontario via ECCC and COCORAHS networks. Quite the soaker over portions of SW ON with 50-80 mm reported from Sarnia through Woodstock and Waterloo to Brantford areas. #ONstorm

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Rob’s Obs @robsobs.bsky.social · 03/04/2025

24 hr precip totals (mm) across Niagara area via NPCA, GRCA, ECCC and COCORAHS networks. Generally 40-60 mm over north Niagara with 50-75 mm in Hamilton/Brantford area. #ONstorm

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Rob’s Obs @robsobs.bsky.social · 29/03/2025

This was EC’s forecast for Hamilton from yesterday afternoon.. high of 14C with NE winds off the lake. (models were correctly showing +2C) And a risk of freezing rain with double digit temps. No logic whatsoever 🤦‍♂️

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Rob’s Obs @robsobs.bsky.social · 17/02/2025

Snowdepth readings via ECCC sites as of 7 am this morning. After the weekend storm dumped 20-40 cm of snow across srn ON, this is the deepest snowpack we’ve seen here in years. At 50 cm, Toronto Pearson has deepest snowdepth since famous “send in the army” event of Jan 1999 (67 cm depth)

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Rob’s Obs @robsobs.bsky.social · 17/02/2025

Unofficial storm snowfall totals (cm) over the weekend across srn ON via ECCC sites along with snow depth readings as of 7 pm Feb 16. Some snowfall readings may be underdone due to blowing/drifting snow at snow sensors.

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