TimB Posted May 25, 2023 Share Posted May 25, 2023 38 minutes ago, Ahoff said: Is there anywhere that talks about our longest dry spells? Watching the news they're showing no rain through at least next Thursday, that should put us around two weeks of no rain. Just curious, never saw any stats on that. Record is 26 days in Oct-Nov 1874, followed by 25 days in Aug-Sept 1995. There are about 70 dry spells of 14+ days on record, most of them occurring in the fall. Now if we’re talking spring dry spells, that 14 day dry spell in May 2021 was actually the longest spring dry spell in almost 80 years. Link to comment Share on other sites More sharing options...
Ahoff Posted May 25, 2023 Author Share Posted May 25, 2023 52 minutes ago, TimB said: Record is 26 days in Oct-Nov 1874, followed by 25 days in Aug-Sept 1995. There are about 70 dry spells of 14+ days on record, most of them occurring in the fall. Now if we’re talking spring dry spells, that 14 day dry spell in May 2021 was actually the longest spring dry spell in almost 80 years. Interesting. That Spring dry spell record could fall. Where did you get this information, would be interested to poke around with it? Link to comment Share on other sites More sharing options...
TimB Posted May 26, 2023 Share Posted May 26, 2023 4 minutes ago, Ahoff said: Interesting. That Spring dry spell record could fall. Where did you get this information, would be interested to poke around with it? https://xmacis.rcc-acis.org This is the site I play around with to get that kind of data. Fairly straightforward to use once you get the hang of it. Link to comment Share on other sites More sharing options...
Ahoff Posted May 26, 2023 Author Share Posted May 26, 2023 13 hours ago, TimB said: https://xmacis.rcc-acis.org This is the site I play around with to get that kind of data. Fairly straightforward to use once you get the hang of it. This is a good website. Thank you. Link to comment Share on other sites More sharing options...
TimB Posted May 26, 2023 Share Posted May 26, 2023 20 minutes ago, Ahoff said: This is a good website. Thank you. I often find myself wondering “how common or rare is it to be this warm or cold or wet or dry or snowy or snowless” and that place usually has the tools I need to answer that question. 1 Link to comment Share on other sites More sharing options...
Ahoff Posted May 30, 2023 Author Share Posted May 30, 2023 Euro, consistently putting our some real heat for Friday and Saturday. They have potentially mid 90s. So...maybe a real shot at 90 one of those days. Link to comment Share on other sites More sharing options...
TimB Posted May 30, 2023 Share Posted May 30, 2023 Our first GFS clown range triple digits of the season appeared this morning. 1 Link to comment Share on other sites More sharing options...
Ahoff Posted May 30, 2023 Author Share Posted May 30, 2023 1 hour ago, TimB said: Our first GFS clown range triple digits of the season appeared this morning. Lol, all-time June records are coming! Link to comment Share on other sites More sharing options...
Ahoff Posted May 30, 2023 Author Share Posted May 30, 2023 My fear, and I know it will be the outcome, is I have my church's annual festival all next week. It's been so dry, it has to break and I know it will break Sunday or Monday next week. If we can squeeze out one more totally dry week that would help me, lol. Link to comment Share on other sites More sharing options...
jwilson Posted May 30, 2023 Share Posted May 30, 2023 5 hours ago, TimB said: Our first GFS clown range triple digits of the season appeared this morning. When is the last time PIT hit 100F? I think the last time I can remember temps that high out here was like 2012 or 2013. I lived in Morgantown back then and we did manage to go over 100F. But I think that's it. Seems pretty rare for PIT to go up there. I feel like we haven't even had that many serious heat waves over the last decade. Perhaps I'm used to worse summers coming from Philly. Link to comment Share on other sites More sharing options...
Ahoff Posted May 30, 2023 Author Share Posted May 30, 2023 1 hour ago, jwilson said: When is the last time PIT hit 100F? I think the last time I can remember temps that high out here was like 2012 or 2013. I lived in Morgantown back then and we did manage to go over 100F. But I think that's it. Seems pretty rare for PIT to go up there. I feel like we haven't even had that many serious heat waves over the last decade. Perhaps I'm used to worse summers coming from Philly. July 1995 was the official last 100 reading for Pittsburgh. We got close in 2012 with a 98 degree reading in July. Link to comment Share on other sites More sharing options...
TimB Posted May 30, 2023 Share Posted May 30, 2023 1 hour ago, jwilson said: When is the last time PIT hit 100F? I think the last time I can remember temps that high out here was like 2012 or 2013. I lived in Morgantown back then and we did manage to go over 100F. But I think that's it. Seems pretty rare for PIT to go up there. I feel like we haven't even had that many serious heat waves over the last decade. Perhaps I'm used to worse summers coming from Philly. 10 minutes ago, Ahoff said: July 1995 was the official last 100 reading for Pittsburgh. We got close in 2012 with a 98 degree reading in July. I’ll add that the period from 1995-2012 is the longest Pittsburgh has ever gone without reaching 97 or higher. And now we’re already up to 11 years again. Link to comment Share on other sites More sharing options...
KPITSnow Posted May 30, 2023 Share Posted May 30, 2023 This heat is going to be a rarity, as usually 90 means 65 plus dew points. It isn’t forecast to get over 50 really in this timeframe and honestly it’s the weather I’d expect in flagstaff az not here. I would also think there is a rather high fire risk incoming. It’s been dry, and you’re looking at 90 degree temps, 40 degree temps, and a fairly consistent 10mph breeze. Link to comment Share on other sites More sharing options...
Ahoff Posted May 30, 2023 Author Share Posted May 30, 2023 1 hour ago, TimB said: I’ll add that the period from 1995-2012 is the longest Pittsburgh has ever gone without reaching 97 or higher. And now we’re already up to 11 years again. Summers honestly do not seem to be getting warmer, lol. Link to comment Share on other sites More sharing options...
Ahoff Posted May 31, 2023 Author Share Posted May 31, 2023 Interestingly, the Euro now towards the end of next week wants to pump in the heat again. GFS showed 100s for around the 13th yesterday (gone today). Euro is in the upper 90s for the 9th. Overdone, likely, but something to watch, maybe? Link to comment Share on other sites More sharing options...
TimB Posted May 31, 2023 Share Posted May 31, 2023 11 minutes ago, Ahoff said: Interestingly, the Euro now towards the end of next week wants to pump in the heat again. GFS showed 100s for around the 13th yesterday (gone today). Euro is in the upper 90s for the 9th. Overdone, likely, but something to watch, maybe? Definitely something to watch. The cool period next week has completely disappeared from the Euro. It’ll be interesting to see how it plays out. Link to comment Share on other sites More sharing options...
Ahoff Posted May 31, 2023 Author Share Posted May 31, 2023 5 minutes ago, TimB said: Definitely something to watch. The cool period next week has completely disappeared from the Euro. It’ll be interesting to see how it plays out. While the GFS has a very pronounced cool period. Wild swings. I'd side more with a more conservative version of the Euro at this point. Not as warm as it is saying but not as cool as the GFS. Link to comment Share on other sites More sharing options...
TimB Posted May 31, 2023 Share Posted May 31, 2023 3 minutes ago, Ahoff said: While the GFS has a very pronounced cool period. Wild swings. I'd side more with a more conservative version of the Euro at this point. Not as warm as it is saying but not as cool as the GFS. GFS is also wet. 0z had nearly 3” of rain through 240. Link to comment Share on other sites More sharing options...
Ahoff Posted May 31, 2023 Author Share Posted May 31, 2023 48 minutes ago, TimB said: GFS is also wet. 0z had nearly 3” of rain through 240. So far, signs are pointing towards warmer and drier. GFS looks on it's own for now. That's usually how it is, lol. Link to comment Share on other sites More sharing options...
KPITSnow Posted May 31, 2023 Share Posted May 31, 2023 Low of 52 last night. Pretty unusual to continue and see these low humidity conditions and it’s honestly really unusual in the summer to see highs pushing the mid 80’s then crashing to the low 50’s overnight Link to comment Share on other sites More sharing options...
Ahoff Posted May 31, 2023 Author Share Posted May 31, 2023 1 hour ago, KPITSnow said: Low of 52 last night. Pretty unusual to continue and see these low humidity conditions and it’s honestly really unusual in the summer to see highs pushing the mid 80’s then crashing to the low 50’s overnight What's even weirder is it was an inter-hour low sandwiched between a 57 and 58 degree reading. Just plummeted and recovered within the hour. Wild drop. Link to comment Share on other sites More sharing options...
TimB Posted May 31, 2023 Share Posted May 31, 2023 8 minutes ago, Ahoff said: What's even weirder is it was an inter-hour low sandwiched between a 57 and 58 degree reading. Just plummeted and recovered within the hour. Wild drop. Here it is in all its glory: 1 Link to comment Share on other sites More sharing options...
TheClimateChanger Posted May 31, 2023 Share Posted May 31, 2023 Crazy diurnal ranges outside of the urban heat island. Zelienople Municipal Airport [National Weather Service : Observed Weather for past 3 Days : Zelienople Municipal Airport]: 26: 72/37 27: 81/37 28: 79/41 29: 88/52 30: 84/52 31: NA/46 Low of 46 in Zelie this morning, looks like another day with highs in the mid to upper 80s. Tomorrow night will probably drop back into the upper 40s/lower 50s, with a high approaching 90. Point-click has 88/51 there tomorrow, but I'd say there's a decent chance of a rare combo of lows in the 40s, and highs 90+. Link to comment Share on other sites More sharing options...
Ahoff Posted May 31, 2023 Author Share Posted May 31, 2023 I've been wondering, do the wildfires in Canada and the associated smoke from them have anything to do with the dryness we've seen? Like does that smoke act as a vacuum for moisture? It seems since the smoke has been around we've been pretty dry. Just wondering if there's a correlation. Link to comment Share on other sites More sharing options...
TheClimateChanger Posted May 31, 2023 Share Posted May 31, 2023 30 minutes ago, Ahoff said: I've been wondering, do the wildfires in Canada and the associated smoke from them have anything to do with the dryness we've seen? Like does that smoke act as a vacuum for moisture? It seems since the smoke has been around we've been pretty dry. Just wondering if there's a correlation. I was wondering this too, and it prompted me to do some research. Based on what I observed, the presence of smoke does have a cooling and drying effect (at least during the warm season, when fires are more ubiquitous). Wildfire smoke can reduce convection by lowering surface temperature by up to several degrees. I wonder too if the absorptive quality of wildfire smoke which can result in warming of the atmosphere in the layers where smoke is present might also contribute to this effect, since there would be both a decrease in temperature in the lower atmosphere and an increase in temperature in the upper atmosphere, both of which would supress updraft intensity. Unlike cloud cover, smoke is supposedly mostly transparent to outgoing long-wave radiation, so has only a small warming effect overnight. In areas subject to a marine layer or high humidity, this cooling effect can enhance cloudiness and result in increased persistence of a low stratus deck and/or fog. Additionally, the smoke alters the microphysics of clouds. The aerosol acts as cloud condensation nuclei, which can enhance cumuliform cloud cover. The abundance of cloud condensation nuclei results in clouds that have consist of more, but smaller, droplets. The increase in droplet density results in brighter clouds [higher albedo] which results in an additional indirect local cooling effect, when clouds are present. However, because droplet size is less, the clouds may produce less rainfall, or be less apt to produce rainfall. 1 Link to comment Share on other sites More sharing options...
Ahoff Posted May 31, 2023 Author Share Posted May 31, 2023 Dew point is plummeting. Down from 50 hours ago to 36 this hour. Wow. Link to comment Share on other sites More sharing options...
KPITSnow Posted May 31, 2023 Share Posted May 31, 2023 19 minutes ago, Ahoff said: Dew point is plummeting. Down from 50 hours ago to 36 this hour. Wow. In all my life here I’m not sure I’ve ever seen a high in the mid 80’s and few points in the 40’s, let alone the 30’s. Link to comment Share on other sites More sharing options...
KPITSnow Posted May 31, 2023 Share Posted May 31, 2023 1 hour ago, TheClimateChanger said: Crazy diurnal ranges outside of the urban heat island. Zelienople Municipal Airport [National Weather Service : Observed Weather for past 3 Days : Zelienople Municipal Airport]: 26: 72/37 27: 81/37 28: 79/41 29: 88/52 30: 84/52 31: NA/46 Low of 46 in Zelie this morning, looks like another day with highs in the mid to upper 80s. Tomorrow night will probably drop back into the upper 40s/lower 50s, with a high approaching 90. Point-click has 88/51 there tomorrow, but I'd say there's a decent chance of a rare combo of lows in the 40s, and highs 90+. Not sure I’ve ever seen those swings around here outside of spring or fall when we get a massive cold front. I said elsewhere that it reminds me of flagstaff where you often get highs in the mid 80’s and lows in the 40’s, but that is usually reserved for more arid climates Link to comment Share on other sites More sharing options...
Ahoff Posted May 31, 2023 Author Share Posted May 31, 2023 2 minutes ago, KPITSnow said: Not sure I’ve ever seen those swings around here outside of spring or fall when we get a massive cold front. I said elsewhere that it reminds me of flagstaff where you often get highs in the mid 80’s and lows in the 40’s, but that is usually reserved for more arid climates We should enjoy it while it lasts, however long that may be. Hopefully through at least this weekend, because it may be a long time before we see a stretch like this again.. 1 Link to comment Share on other sites More sharing options...
TheClimateChanger Posted May 31, 2023 Share Posted May 31, 2023 1 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now