tag:blogger.com,1999:blog-7478606652950905956.post2000268317632332357..comments2024-03-28T03:08:44.068-07:00Comments on Cliff Mass Weather Blog: Humidity StormCliff Mass Weather Bloghttp://www.blogger.com/profile/13948649423540350788noreply@blogger.comBlogger19125tag:blogger.com,1999:blog-7478606652950905956.post-49939309393018071442022-07-29T13:55:46.362-07:002022-07-29T13:55:46.362-07:00https://wasmoke.blogspot.com/
You can adjust the v...https://wasmoke.blogspot.com/<br />You can adjust the visible layers setting in the upper right corner to see the current smoke plume. Today it's covering at least half the U.S.Pamhttps://www.blogger.com/profile/15825603457715029323noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-37273639223921728432022-07-28T18:05:42.124-07:002022-07-28T18:05:42.124-07:00Wondering how much tides play into this? We live o...Wondering how much tides play into this? We live on the coast & watch winds change direction during tidal change. So fascinating. Incoming tides often bring fog with it. When it is warm inland we often get heavy fog.Jjohnhttps://www.blogger.com/profile/16072851106801691507noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-18412220613622216202022-07-28T16:14:11.880-07:002022-07-28T16:14:11.880-07:00Does the high dew point pressure explain why the a...Does the high dew point pressure explain why the air feels so heavy and it feels so hot even though the temp right now is only 83. It feels much hotter to me. I just got home from running errands on foot and could barely make it out there. Even earlier in the day when the temps were still in the 70s it felt much hotter than a typical 75 degree day. All I know is this is feeling almost as unbearable as the heat dome, not quite but still pretty bad. Koko Lovehttps://www.blogger.com/profile/03422680748149018287noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-41317717100728419402022-07-28T10:11:09.136-07:002022-07-28T10:11:09.136-07:00You can get large-fire information from the link. ...You can get large-fire information from the link. There are no large fires in WA at this time.<br />https://www.nifc.gov/fire-information/nfn#IdahoJohn F. Hultquisthttps://www.blogger.com/profile/02405080162099143163noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-52984917502398510952022-07-28T07:56:42.181-07:002022-07-28T07:56:42.181-07:00Wasn't a great time for the condensate drain o...Wasn't a great time for the condensate drain on my air handler to become plugged up. What a mess! Joshhttps://www.blogger.com/profile/09534556179844509713noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-22004537510261079512022-07-28T02:09:09.828-07:002022-07-28T02:09:09.828-07:00I mentioned the Palouse because I was puzzled abou...I mentioned the Palouse because I was puzzled about the source of all the humidity and started brainstorming. I could have just as easily mentioned the irrigated fields around Moses Lake. Sure, there's some distance out to the Idaho border, but if the High was over the Canadian Rockies providing us easterly flow, the distance wouldn't have been too much of an impediment. Think of how mobile wildfire smoke can be in similar situations.<br /><br />I dismissed the notion after considering it because even with the wet spring and present irrigation, there's just not that much water in play. The reality of course is that the High is not in the right place to provide that easterly flow. It's on top of us like a clamp preventing uplift, or frankly much atmospheric mixing of any sort. I'm sure we'll start seeing NOX haze locally as the heat wears on.herrbrahmshttps://www.blogger.com/profile/08308204686231352936noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-33730084895572751442022-07-27T21:12:27.340-07:002022-07-27T21:12:27.340-07:00the dew point temperature is a measure of moisture...the dew point temperature is a measure of moisture in the air. The wet bulb brings in temperature as well. Thus, I like dew point for its simplicity.Cliff Mass Weather Bloghttps://www.blogger.com/profile/13948649423540350788noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-37114277058895931592022-07-27T18:44:44.512-07:002022-07-27T18:44:44.512-07:00Depending on the temperature of the CW running thr...Depending on the temperature of the CW running through the cooling coils in an air handler, it's quite possible to have 'comfortable' temperatures, with uncomfortable humidity. At least in commercial applications, thanks to [needed limits] on energy usage, gone are days when HVAC systems might have both a 'Cold Deck' & a 'Hot Deck' - running simultaneously - with the cold deck, perhaps, supplying air with a temperature in the 40's-! and the Hot Deck tempering the air back to a temperature making the correct setpoint in the space. That massive cooling, coupled with re-heating is capable of removing vast quantities of moisture from the air, producing cold and very dry air - often too dry. <br /><br />But, oh man oh man, for those of us old enough to remember it... on a very hot day, walking into a building employing this system (energy usage be damned) and to feel that incredible wall of exceptionally cold and dry air - it was as if you walked off the Sahara Desert and onto an ice floe somewhere in the Arctic Ocean-! <br /><br />Yes, less sophisticated systems simply working at "100% output" can produce cool, dry air - but, they are becoming more and more the odd man out these days and going forward.Nanookhttps://www.blogger.com/profile/07255357829181568172noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-500175712961971772022-07-27T18:36:01.606-07:002022-07-27T18:36:01.606-07:00I once worked in a small office building which had...I once worked in a small office building which had a central AC system which had been undersized to save money when the building was first constructed. Under high outside temperature and humidity conditions, if the temperature control was set below 82, the coils in the air handler would freeze up solid with ice. Both the room temperature and the room humidity would then rise as a consequence. <br /><br />It became necessary to put a lock on the AC thermostat box to keep the staff from setting the temperature below 82 whenever the outside temperature rose above 95. At least we had portable fans available to keep us cooler than we might have been otherwise. Betah Blocherhttps://www.blogger.com/profile/05830083338356921513noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-51117111920903073462022-07-27T15:33:25.641-07:002022-07-27T15:33:25.641-07:00I'm writing from Winthrop (Methow Valley, east...I'm writing from Winthrop (Methow Valley, east side of the Cascades). The air around us is warm and fairly dry so we seem to be insulated from the moisture plume your post describes. But the air is very hazy. I am not aware of any fires around. I know that the ridge of high pressure over us traps the air near the surface so that particulates in the air accumulate rather than getting blown away, but can you tell us more about the nature of the haze and where the particles that cause it come from? Maybe something for your Friday topic of the week? Thanks!Alan Watsonhttps://www.blogger.com/profile/17964947673893233792noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-36187168722792021952022-07-27T15:04:58.555-07:002022-07-27T15:04:58.555-07:00Wouldn't the Wetbulb Temperature be more appro...Wouldn't the Wetbulb Temperature be more appropriate as a measure of discomfort for humans since it is more analagous to the sweating and how sweat cools the human body? I know it is less common to have the value included in a weather briefing (and somewhat similar to dewpoint) but they are not exactly the same. pnwbellhttps://www.blogger.com/profile/08467858304695414068noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-90042176225483500212022-07-27T14:44:08.476-07:002022-07-27T14:44:08.476-07:00Looking at the sea surface temperature plot from U...Looking at the sea surface temperature plot from U of Maine it looks like the north Pacific is above average with a big hot spot just about where the moisture is coming from with deviations above 5 degrees C. I'm assuming that's the source?Weather Devoteehttps://www.blogger.com/profile/07071334949599205140noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-19583021293731884522022-07-27T10:40:32.342-07:002022-07-27T10:40:32.342-07:00You have to have a mechanism to start moving that ...You have to have a mechanism to start moving that moist air upward into an unstable atmosphere. At least for the time being, there are none around.John K.https://www.blogger.com/profile/03575682658318674003noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-29279789314905227242022-07-27T10:13:56.938-07:002022-07-27T10:13:56.938-07:00I just got back from a couple of days of hiking at...I just got back from a couple of days of hiking at Nason Ridge which is to the east of Steven's pass. As I was driving through Monroe early Monday morning, It was fairly foggy, which seemed unusual for late July. It was quite warm (90 -100) where I was hiking, but not too oppressive. When I got back to my car at the trailhead, the thermometer registered 102, which while hot didn't seem that bad. When I got back to Seattle however, the temperature was about 95 and oppressive, due in no small part to the greater humidity. This posting affirmed what I observed with your dew point measurement. Seattlemathteacherhttps://www.blogger.com/profile/07801704002386329444noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-49352756968890338222022-07-27T08:52:24.526-07:002022-07-27T08:52:24.526-07:00Wait, shouldn't the investigation have been ab...Wait, shouldn't the investigation have been about the atmosphere inside the store instead? After all, what kind of air conditioning system could they have had to allow that to happen? I've never seen a humid air conditioned environment. It's usually quite dry, since most of the moisture is now dripping off the AC unit outside. Was it on the fritz? Had there just been a power outage?Aproposhttps://www.blogger.com/profile/16705726691774282624noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-22679210583290162352022-07-27T08:47:20.938-07:002022-07-27T08:47:20.938-07:00Thanks. That is interesting stuff.
KELN hit 103° ...Thanks. That is interesting stuff.<br /> KELN hit 103° with DP ~50 and RH ~16<br />Herrbrahms mentions “the Palouse”.<br />You have previously mentioned the wet spring in eastern WA. <br />Two thoughts:<br />I suspect the area has already dried; wheat harvest is underway.<br />The topography and distance (~250 mi) between the Palouse and Puget Sound is not conducive to the former affecting the later.<br />And to Franz: “What more is required?”<br />I'll guess “lift”. If the air was “descended out of the moisture patch down to the surface” then the Convective Available Potential Energy – CAPE - measure would be low. (I used the NWS Glossary) I think that is how that works.John F. Hultquisthttps://www.blogger.com/profile/02405080162099143163noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-69580476666400336522022-07-27T07:39:33.489-07:002022-07-27T07:39:33.489-07:00Warm, moist air sounds like thunderstorm ingredien...Warm, moist air sounds like thunderstorm ingredients, but no storms. What more is required?Franz Amadorhttps://www.blogger.com/profile/11722642461621281357noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-9888229832394107572022-07-27T07:22:41.337-07:002022-07-27T07:22:41.337-07:00Just 5 minutes north of the border in Abbotsford, ...Just 5 minutes north of the border in Abbotsford, BC. Monday morning had a very heavy dew and was also extremely muggy as the day warmed up. Perhaps this was the effects of leading edge of the moisture plume before the moist air worked its way further south for Tuesday morning?R.idaeushttps://www.blogger.com/profile/11089435022106788737noreply@blogger.comtag:blogger.com,1999:blog-7478606652950905956.post-88892757330946628042022-07-27T05:18:42.028-07:002022-07-27T05:18:42.028-07:00Thank you for answering the weather question that ...Thank you for answering the weather question that has been on people's minds. I'm very sensitive to dewpoint and dislike when it exceeds 55F. Yesterday morning, I was out in the pre-dawn hours and felt that the DP was well over 60. This puzzled me, since I had assumed that this heat wave like most was associated with an inland High pushing desert air downslope into a thermal trough parallel to the I-5 corridor.<br /><br />Perhaps the spring was so wet on the Palouse that the air had some stickiness to it? But no, that didn't seem right. A July version of the Pineapple Express inherently makes a lot more sense. I appreciate you showing how that oceanic moisture blew around the High and hit us from the north.<br />herrbrahmshttps://www.blogger.com/profile/08308204686231352936noreply@blogger.com