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Everything posted by tamarack
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This coming Monday marks 30 years since MWN's windiest met summer day - the 24-hour average was 99 mph, IIRC. Friends were getting married at our (then) church in South Gardiner, with an outdoor reception under a large tent, and the wind would work the 4-foot "pins" upward such that we had to monitor them while carrying sledge hammers.
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Genny shut down 8:40 PM, 3rd longest run since it was installed in 2020, though 94 hours lower than Dec 2023. My wife had to switch lanes a couple times on Rt 2 coming home from Farmington, but no detours, just dodging tree tops. Any of those tall pines around Flying Pond get blown down? Couple years back, Maine Cabin Masters had to do a full rebuild on a camp near Flying after several big ones smashed it on Dec 18, 2023.
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At 1 PM I noted that we were in a severe-warned block, but when I went to find the parameters, GYX had dropped the SVR as the storm had weakened. First drops at 1:10 then at 1:15 RA+ and gust after gust arrived - trees pushed around like I hadn't seen since Dec 2023, probably well into the 40s. Strong but short of SVR criteria. 1:18 the genny kicked in (still running now at 2:15) and the heavy rain backed down by 1:20, nearly stopped at 1:25. 0.29" in the gauge, mostly in the 1:15-1:20 span. During the lighter rain a surprisingly wet hummingbird landed on the feeder only 3 feet from me and had a long drink. Only 2 strikes, both distant but enough that the dog hid. I walked out our gravel road, saw that the outage was caused elsewhere, and confirmed that none of the 120-foot-plus pines had fallen.
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Another Bald Mountain to consider is in Oquossoc, part of Rangeley. It's about 1.3 miles with 900+feet elevation gain to the obs platform, which offers wonderful 360° views - Mooselook Lake to the West and Rangeley Lake to the east, plus lots of mountains. Last time I climbed it was November 2021, with my son-in-law plus 6 of their 7 kids (the 2-y.o stayed home but the 5 y.o. had a blast) along with 2 neighbor kids. It's a mile of uphill stroll thru forest then 0.3 miles of steeper, rockier but not vertigo steep, to the summit. Not much smoke today, but surprisingly breezy along with the forecast lower TD.
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That event caused near-total defoliation of the trees along Rt 302 in Naples, and probably elsewhere that I didn't view. The only other significant defoliating storm was 5-10 miles SE from home, in Rome and New Sharon, on August 30, 2007. Next morning I found 1-2 miles on Rt 27 on the Rome end of Mile Hill as a 2-track thru 6" of leaf salad. Folks there reported up to 4" deep hail in places away from where water flow gathered the ice. Perhaps 2,000 acres were stripped and when the Maine Forest Service forester examined things there, she found considerable debarking, especially in Aspen. Some stripped hemlock did, pines refoliated in the spring, and ash became like bottle-brushes as scores of lateral buds sprouted. Some 2" chunks were reported but along Rt 27 I found only dimes/nickels/few quarters (at 5 PM 24 hours after the storm).
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And the biggest windthrow events since we moved to Maine in 1973 were straight line winds. In November of 1974, about 12" of wet snow followed by strong NW gales flattened about 3,000 acres on the SW corner of Baxter Park. Because Governor Baxter's deeds of trust, the only salvage permitted was along the park roads for safety reasons. In 1977 all that well-seasoned wood was consumed by a wildfire. The other 3,000-acre blowdown was only 10-15 miles northwest from the Baxter damage - a powerful southeast storm (we had gusts to 50 at Fort Kent) in late October 1980 tipped the spruce-fir stands on T4R11 (mostly); I saw that area from the air in June of 1981 and it looked like a giant version of oats lodged by an August downpour. Essentially all that wood was salvaged by Great Northern.
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Forgot this thread and posted the info below on the Ju-ply one: Afternoon AFD from GYX. Tomorrow evening might get interesting. Our place is on/near the boundary between levels 2/5 and 3/5. I can't recall ever being in a 3/5 area. Now to the increasing threat for severe weather, which again could be potentially significant. An Enhanced Risk (Level 3/5) of Severe Weather is in place for northern NH and the western ME mountains,a Slight Risk (Level 2/5) for central NH and the Maine interior, and a Marginal Risk (Level 1/5) for coastal ME and approaching southern NH. A potent 500mb shortwave will cross Quebec in the afternoon and evening, with its associated cold front approaching the International Border from the northwest early Tuesday evening. Increasing forced ascent, significant height falls, and strengthening wind fields aloft will set the stage for severe thunderstorms to develop with the hot and humid air mass in place, further enhanced by an elevated mixed layer that will steepen lapse rates aloft. Today`s 12Z model suite, including CAMs, continue to show deep layer shear of 50-60 kt, MUCAPE in the 2000-2500 J/kg range, and high values of DCAPE (800-1000 J/kg) brought on by some dry air/high dewpoint depressions in the low levels. This supports damaging wind gusts, and given the parameters, there`s certainly potential for these to be significant on the order of 75+ mph. In addition, the instability profiles and steep mid-level lapse rates on forecast soundings depict large hail could be to the size of golf balls or even larger. There is also enough directional shear to support a tornado threat with mean 0-1km SRH of 100-200 m^2/s^2. These hazards are all possible within discrete or semi-discrete storm mode, but the primary hazard will become damaging winds when the dominant mode becomes more linear, although a tornado within the line(s) will remain possible. For timing: there`s strong consensus among the CAMs with multiple clusters or semi-discrete developing across southern Quebec in the late afternoon to early evening with rapid upscale growth in coverage and intensity as storms approach northern NH and northwestern ME in the 6pm to 8pm time frame. Storms are expected to quickly progress to the south the rest of the evening into the early overnight hours. However, it should be noted there are hints of isolated discrete cells developing in the 4pm to 6pm timeframe that may approach from the north. Based on CAM solutions, the threat for severe weather should diminish after 2 AM, but some development of showers and a few storms is possible overnight. This is not a yearly, typical threat of severe storms, and it becomes even more dangerous as the threat continues after dark. It is highly advised to have multiple ways to receive warnings, especially ones that will wake you up with the threat continuing into the late evening and early overnight hours. The highest risk areas also include many popular camping and recreation areas, which make those who are outdoors extremely vulnerable to falling trees.
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Afternoon AFD from GYX. Tomorrow evening might get interesting. Our place is on/near the boundary between levels 2/5 and 3/5. I can't recall ever being in a 3/5 area. Now to the increasing threat for severe weather, which again could be potentially significant. An Enhanced Risk (Level 3/5) of Severe Weather is in place for northern NH and the western ME mountains,a Slight Risk (Level 2/5) for central NH and the Maine interior, and a Marginal Risk (Level 1/5) for coastal ME and approaching southern NH. A potent 500mb shortwave will cross Quebec in the afternoon and evening, with its associated cold front approaching the International Border from the northwest early Tuesday evening. Increasing forced ascent, significant height falls, and strengthening wind fields aloft will set the stage for severe thunderstorms to develop with the hot and humid air mass in place, further enhanced by an elevated mixed layer that will steepen lapse rates aloft. Today`s 12Z model suite, including CAMs, continue to show deep layer shear of 50-60 kt, MUCAPE in the 2000-2500 J/kg range, and high values of DCAPE (800-1000 J/kg) brought on by some dry air/high dewpoint depressions in the low levels. This supports damaging wind gusts, and given the parameters, there`s certainly potential for these to be significant on the order of 75+ mph. In addition, the instability profiles and steep mid-level lapse rates on forecast soundings depict large hail could be to the size of golf balls or even larger. There is also enough directional shear to support a tornado threat with mean 0-1km SRH of 100-200 m^2/s^2. These hazards are all possible within discrete or semi-discrete storm mode, but the primary hazard will become damaging winds when the dominant mode becomes more linear, although a tornado within the line(s) will remain possible. For timing: there`s strong consensus among the CAMs with multiple clusters or semi-discrete developing across southern Quebec in the late afternoon to early evening with rapid upscale growth in coverage and intensity as storms approach northern NH and northwestern ME in the 6pm to 8pm time frame. Storms are expected to quickly progress to the south the rest of the evening into the early overnight hours. However, it should be noted there are hints of isolated discrete cells developing in the 4pm to 6pm timeframe that may approach from the north. Based on CAM solutions, the threat for severe weather should diminish after 2 AM, but some development of showers and a few storms is possible overnight. This is not a yearly, typical threat of severe storms, and it becomes even more dangerous as the threat continues after dark. It is highly advised to have multiple ways to receive warnings, especially ones that will wake you up with the threat continuing into the late evening and early overnight hours. The highest risk areas also include many popular camping and recreation areas, which make those who are outdoors extremely vulnerable to falling trees.
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Aroostook has seen a surprising number of tornados, considering it is far north and hilly. The densest area for wind damage (tornado and straight line) seems to be the Fish River chain of lakes, Eagle, Square, Long. In this century there have been damaging wind events - including tornados - from Oxbow to the town of Eagle Lake. Public Lands had loggers salvage 1,900 cords from 60 acres south of Eagle Lake in 2005 and 3,000 acres in 2013 from a 200+-acre blowdown north of the lake. The granddaddy event was older, 600 acres Eagle to Square Lakes flattened by straight line wind on 9/30/1986. The Bureau salvaged about 3,000 cords from 300 acres (not all were reached) and J.D. Irving salvaged at least as much on their half of the blowdown.
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Beats my longest - 6 days from the Jan 1953 ice storm on the hills north and west from NYC. 2nd place is 101 hours from the Dec 18, 2023 gales/flood and 3rd was 90 hours in Jan 1998. We were fortunate in that last one - a single break between Brunswick Avenue and our place 400' away would've meant 2 weeks. (Our phone was out for 13 days.)
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Memories of sweating while doing brush saw thinning north of Flagstaff Lake that summer. June had one hot spell, but the 6 weeks July 4 thru mid-August had some of the highest dews I've encountered in Maine. The 8/1-14 stretch of swamp-dews put mold all over things in our basement, only time I've seen that. IIRC, PWM had a 77° TD during that spell and a site in BGR (don't know where) reported 93° and 68% RH one afternoon, which would be a TD of about 81.
