tag:blogger.com,1999:blog-33386160.post9090976001320158139..comments2024-02-25T19:29:38.176-06:00Comments on Rob's Blog: 30C weather set to return to southern MB.. record heat possible Tuesday..Unknownnoreply@blogger.comBlogger31125tag:blogger.com,1999:blog-33386160.post-49113093784025345672011-08-24T10:45:50.969-05:002011-08-24T10:45:50.969-05:00No not really, looks like the brunt of the strong...No not really, looks like the brunt of the strong wind gusts will occur in the manitoba lakes area as strong NW winds aid in wave development with gusts as high as 70 Km/H. Not good for the shoreline or the cottages along the lakes region. There is a strong wind warning in effect for those regions. so your best best for seeing strong winds is near the lakes. Here in winnipeg today we may see the wind at 40 Km/h gusting to 60 today but not as severe here. Overall just a classic winnipeg summer breeze.Mikenoreply@blogger.comtag:blogger.com,1999:blog-33386160.post-27810636359146593222011-08-23T20:44:20.999-05:002011-08-23T20:44:20.999-05:00Is there potential for damaging wind gusts tomorro...Is there potential for damaging wind gusts tomorrow in the Red River Valley ???daniel Pnoreply@blogger.comtag:blogger.com,1999:blog-33386160.post-22556970586444432982011-08-23T20:01:28.989-05:002011-08-23T20:01:28.989-05:00WOW!
One for the record books!
Weather summary pos...WOW!<br />One for the record books!<br />Weather summary posted by Environment Canada for the record highs!daniel Pnoreply@blogger.comtag:blogger.com,1999:blog-33386160.post-17681586110889592932011-08-23T16:09:25.600-05:002011-08-23T16:09:25.600-05:00Yes its 36 C now. The point was mixing hasn't...Yes its 36 C now. The point was mixing hasn't been quite as good there even though its often the warm spot.. obviously still hot though.Danielhttps://www.blogger.com/profile/00949425441824069047noreply@blogger.comtag:blogger.com,1999:blog-33386160.post-78090719552524213462011-08-23T15:51:58.877-05:002011-08-23T15:51:58.877-05:00It is still pretty hot at the Forks Daniel, 36C.It is still pretty hot at the Forks Daniel, 36C.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-33386160.post-18029131589835579362011-08-23T15:46:41.982-05:002011-08-23T15:46:41.982-05:00Bubble of well mixed air with temps between 36-38 ...Bubble of well mixed air with temps between 36-38 C over the northern RRV by looking at the agwx network.. still hasn't surfaced at the forks which is 'only' at 35 C (and is typically a warmer spot). Some higher level clouds moving in will likely halt the temp rise. <br /><br />All the moisture from last weeks rain is long gone... the drought continuesDanielhttps://www.blogger.com/profile/00949425441824069047noreply@blogger.comtag:blogger.com,1999:blog-33386160.post-65568709851431484092011-08-23T15:46:24.639-05:002011-08-23T15:46:24.639-05:00Hottest temperatures today in the northern Red Riv...Hottest temperatures today in the northern Red River valley which is benefitting the most from its lower elevation and dry soil conditions.. aiding in maximum adiabatic heating with a southwest downslope flow. Winnipeg at 37C is hottest spot in the country today. <br /><br />In order for us to hit 40C, we need today's set up, but with 850 mb temperatures of 27C or more.robhttps://www.blogger.com/profile/01577519556216420480noreply@blogger.comtag:blogger.com,1999:blog-33386160.post-85687220344623720792011-08-23T14:52:25.354-05:002011-08-23T14:52:25.354-05:00Hottest day in Rob's Obs history! (since 2001)...Hottest day in Rob's Obs history! (since 2001) 37.9C as of 2:45 pm.. <br /><br />Jon, Davis weather stations are very good and accurate stations, but temperature readings may be a degree or two different than official airport readings due to less ideal exposure, such as being in a more sheltered location with less ventilation. Generally though, I've found my site is within 1-2C of official readings.robhttps://www.blogger.com/profile/01577519556216420480noreply@blogger.comtag:blogger.com,1999:blog-33386160.post-43950012187005735682011-08-23T14:44:51.464-05:002011-08-23T14:44:51.464-05:00Hmm that 36/10 at YWG seems a bit odd given the li...Hmm that 36/10 at YWG seems a bit odd given the lite flow and higher dewpoints back to the west at Portage etc. Seems just like a pocket of well mixed air that suddenly surfaced at the recording station.. from an airplane landing or taking off? lol. Anyways, I would not be surprised if the temp went down and dewpoint up next hour. <br /><br />Flow is weaker and front is slower than progged (almost seems to be washing out a bit).. Fargo still with a southerly flow and a Td of 22 CDanielhttps://www.blogger.com/profile/00949425441824069047noreply@blogger.comtag:blogger.com,1999:blog-33386160.post-34393874177244193492011-08-23T14:41:11.227-05:002011-08-23T14:41:11.227-05:00A max of 37.2C at YWG airport as of 2:30 pm.. reco...A max of 37.2C at YWG airport as of 2:30 pm.. record high!robhttps://www.blogger.com/profile/01577519556216420480noreply@blogger.comtag:blogger.com,1999:blog-33386160.post-4501193262335706422011-08-23T14:35:03.502-05:002011-08-23T14:35:03.502-05:00yes thats exactly it. Ive seen that kind of thing ...yes thats exactly it. Ive seen that kind of thing happen before and I will keep that in mind from now on.Mikenoreply@blogger.comtag:blogger.com,1999:blog-33386160.post-74072196656562904522011-08-23T14:16:51.663-05:002011-08-23T14:16:51.663-05:00Mike, you mean this radar image?
http://imgur.com...Mike, you mean this radar image?<br /><br />http://imgur.com/083Ax<br /><br />It's a combination of anomalous propagation (ground clutter) and how the radar ranging works. Quite typical of overnight and early morning conditions.GDHnoreply@blogger.comtag:blogger.com,1999:blog-33386160.post-22314716545394149232011-08-23T14:12:22.497-05:002011-08-23T14:12:22.497-05:00Winnipeg airport up to 36.1C as of 2 pm with a 10C...Winnipeg airport up to 36.1C as of 2 pm with a 10C dewpoint.. sizzling! Feels like Las Vegas out there.. within 0.6C of breaking today's record high. <br /><br />Not only is today the hottest day of the summer here, but it's also the hottest day in Winnipeg since June 17 1995 when we hit 37.8C.robhttps://www.blogger.com/profile/01577519556216420480noreply@blogger.comtag:blogger.com,1999:blog-33386160.post-23841100300803490422011-08-23T13:19:45.698-05:002011-08-23T13:19:45.698-05:00Ive also been watching the updates on TV from the ...Ive also been watching the updates on TV from the storm damage in goderich, amazing that there wasn't any high fatalities. It could of been a lot worse. I am very surprised how that storm mantained its strength over lake huron, must have been some very warm waters. Well We give you all the very best in rebuilding your beautiful town "Goderich".Mikenoreply@blogger.comtag:blogger.com,1999:blog-33386160.post-83538421173060913002011-08-23T13:14:56.725-05:002011-08-23T13:14:56.725-05:00Temperature at the airport as of 1pm...34.1. It lo...Temperature at the airport as of 1pm...34.1. It looks as if we may come very close to that airport record today. <br /><br />Also, I noticed that Dave's station out here in S St Vital is reading at 36.7 as of right now...does the temperature at the airport tend to be lower than other regions of Winnipeg, or are these home stations a little less accurate?Jonnoreply@blogger.comtag:blogger.com,1999:blog-33386160.post-10597904490751809122011-08-23T13:12:24.276-05:002011-08-23T13:12:24.276-05:00did anyone notice the radar image last night on th...did anyone notice the radar image last night on the weathernetwork? Turns out at 1 am it was so humid outside that the radar picked up what looked to be a line of storms inbetween brandon and portage la prairie, but it was actually the intense moisture content in the air. Kind of like ground clutter. <br /><br />Any opinions?<br /><br />I was also a little surprised on how quick the dewpoints climbed last night, it almost felt tropical.Mikenoreply@blogger.comtag:blogger.com,1999:blog-33386160.post-15737299854095046422011-08-23T11:42:02.267-05:002011-08-23T11:42:02.267-05:00I was impressed by the temperature and humidity in...I was impressed by the temperature and humidity in the early hours of Tuesday morning. You'd think you were in Hawaii or something. It will be interesting to see how high today's temperature event will go!Box134noreply@blogger.comtag:blogger.com,1999:blog-33386160.post-30741044173144822862011-08-23T08:22:13.587-05:002011-08-23T08:22:13.587-05:00Well, there's more than the downslope effect g...Well, there's more than the downslope effect going on here, but the numbers are interesting anyway.GDHnoreply@blogger.comtag:blogger.com,1999:blog-33386160.post-63511316257792393402011-08-23T08:20:58.453-05:002011-08-23T08:20:58.453-05:00Talking about downslope adiabatic heating (off Rid...Talking about downslope adiabatic heating (off Riding Mountain), McCreary was 24-25 C all night and still 25 this morning. Dauphin went down to 17 C and Wasagaming was down to 9 C!GDHnoreply@blogger.comtag:blogger.com,1999:blog-33386160.post-75056977941119501672011-08-22T23:40:54.933-05:002011-08-22T23:40:54.933-05:00Maybe it's too hot for them.. they need to fin...Maybe it's too hot for them.. they need to find some place cooler! :)<br /><br />Our dewpoints have been steadily climbing this evening with those southerlies up the valley tapping more humid air from ND.. up to 21c now. A muggy night.. but dewpoints will be drying out noticeably by midday tomorrow as we get into a westerly flow of drier air.. with dewpoints dropping to 10C or lower by mid afternoon while temps climb into the mid 30s. It'll be hot.. but a dry hot..robhttps://www.blogger.com/profile/01577519556216420480noreply@blogger.comtag:blogger.com,1999:blog-33386160.post-75917564834016467152011-08-22T23:18:50.931-05:002011-08-22T23:18:50.931-05:00I know its super hot right now but I have noticed ...I know its super hot right now but I have noticed the geese are already gathering and flying in formation. Seems a little earlier than normal maybe they know something we don'tDarylnoreply@blogger.comtag:blogger.com,1999:blog-33386160.post-90832447039711069692011-08-22T23:01:51.657-05:002011-08-22T23:01:51.657-05:00daniel..
Temperatures at 850 mb (about 5000 ft ab...daniel..<br /><br />Temperatures at 850 mb (about 5000 ft above sea level) can be used as a good indicator of the potential high temperature for the day, assuming generally dry sunny conditions with no snow on the ground or low level cold advection. The assumption is that the air at 850 mb can be mixed down to the surface at a certain heating rate (known as the dry adiabatic lapse rate) which can be used to calculate the maximum temperature at the surface. At our elevation, you can generally add 10-14C to the 850 mb temperature during the warm season to get your estimated max temp. Today for example, our 850 mb temp got up to 21c and our high was 33.6C. There are other factors to consider, but this technique will give you a pretty good estimate of max temps within a couple degrees in normal situations. <br /><br />In the winter with snow on the ground, this technique doesn't work since 850 mb temps won't mix down to the surface because of a low level inversion due to the cold surface. As a result, often in the winter you can have warmer air 5000 feet up in the air than at the surface. <br /><br />Tomorrow, our 850 temps climb to 24C by afternoon .. which by adding 13-14C would give us a high of about 37-38C. NAM continues to indicate 38C for Winnipeg tomorrow (and up to 40C in parts of the RRV!), while the RGEM is giving us a more conservative 33C. Everything points to maximum diabatic heating for Winnipeg and the RRV tomorrow with very dry air moving in (afternoon dewpoints dropping into the single digits), a west to southwest flow (which can add a couple of degrees in downslope warming off the Pembina escarpment) and sunny skies. I think 35-36C looks like a good estimate as we tap some cooler air by late afternoon.robhttps://www.blogger.com/profile/01577519556216420480noreply@blogger.comtag:blogger.com,1999:blog-33386160.post-5718863133228589232011-08-22T20:40:34.658-05:002011-08-22T20:40:34.658-05:00Can someone please tell me why everyone looks at t...Can someone please tell me why everyone looks at the 850 mb temps to determine the air temperature??? What is the significance???daniel Pnoreply@blogger.comtag:blogger.com,1999:blog-33386160.post-21723161900716128912011-08-22T15:33:28.312-05:002011-08-22T15:33:28.312-05:00We continue to be plagued by that strange split in...We continue to be plagued by that strange split in the upper flow (see the 200 - 500 hPa progged flow). Another disturbance will move across the northern plains tonite.. possibly strong enough to generate a weak LLJ out ahead of it. With best lift/forcing focused south of the border, not much support for any convection along the surface trough as it moves thru tomorrow morning. Once again, moisture and instability won't be lacking with some very high Td's in the 21-23 C range upstream over N Dakota. Winds have veered somwehat to the SW allowing for better mixing and a 34/16 t/td spread... however, winds should back to SSE ahead of the trough making for a very uncomfortable night.Danielhttps://www.blogger.com/profile/00949425441824069047noreply@blogger.comtag:blogger.com,1999:blog-33386160.post-45641801242326977242011-08-22T15:17:33.443-05:002011-08-22T15:17:33.443-05:0034C wow!34C wow!Anonymousnoreply@blogger.com