
George BM
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IAD w/ a 48kt(55mph) wind gust.
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Currently 61/33 at IAD w/ a peak gust of 45mph so far.
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March 2nd, 2018 was epic.
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SPC mesoscale 18z analysis showing 0-3km lapse rates of 10+C/km stretching from Carroll County, MD down southwest through Prince Williams County, VA. That will help any showers bring down enhanced wind gusts this afternoon.
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I ended up with 0.78" IMBY. (Herndon, VA) 1.42" for April so far.
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MBY Snow totals Winter 2024-2025 11/21/2024: T (A brief gusty rain/graupel shower around 6pm.) 11/22/2024: T (Flurries/light wet snow fell between 10am and 11:45am before mixing with and changing to light rain by 12:30pm.) 12/01/2024: T (Flurries off and on during the 4pm and 5pm hour.) 12/05/2024: T (Mixed light rain/snow between 4:30-5am w/ another brief light rain//snow mix between 7:30-7:40am.) 12/15/2024: T (A few ice pellets starting around 11:30am, then mixing with and changing to an off and on drizzle of rain/snow (intensified briefly into a light rain/snow mix during the 1pm hour). This lasted until after 3pm when precip again intensified into a light rain/snow mix before changing to all rain by 3:40pm.) 12/20/2024: T(A drizzle of rain/snow (8:30am-9am). A period of light snow between 10:30-11:15am, briefly approaching moderate intensity between 10:35am and 10:50am. Flurries continuing until midday. A few more flakes in the 6pm hour based on radar returns.) 12/24/2024: 0.1" (Light sleet started around 6:30am occasionally mixing with freezing rain through about 9am or so (more IP than ZR). Precip was very light but below freezing temps and a cold ground allowed for whitening of hard surfaces. Was originally going to call it a trace but with all of the 0.1" reports immediately surrounding me and taking into account sleet pellets piled at least two pellets high in depth... a tenth of an inch is the final measurement I went with making it the first measurable white stuff of the season for me.) 1/03/2025: 0.2" (Brief light rain/snow/graupel shower around 2pm. Heavy snow associated with a developing snow squall between 2:50pm-3:15pm with a brief brake in intensity to light snow between 3:00pm and 3:05pm. A second snow squall from 4:13pm to 4:25pm. Snow was light to moderate with the second squall until 4:22pm when rates briefly became as heavy as during first squall. Peak snowfall rates from both squalls in the 1-2"/hr range.) 1/06/2025: 6.2" (First flakes around or shortly after midnight on the 6th. Light snow becoming moderate at times by 2:00am lasting through 7am before becoming intermittent and tapering off to a few small flakes/crystals by 9:45am. A brief moderate snow shower around 1:40pm tapering off to a light snow then flurries by 2:20pm and holding near that intensity until the 4pm hour when it became a very light snowfall again. Light snow, approaching moderate intensity at times from the 5pm hour through 8:30pm, then very light snow/flurries until 10:15pm when snow tapered off.) 1/10-11/2025: 1.7" (Flurries/light snow starting in the 10pm hour intensifying to light/moderate snow 10:50-10:55pm. Snow became moderate to even mod/heavy at times with peak snowfall rates of 1"+/hr at times between 11pm and 12:45am. Snow then became occasional and light until the mid-overnight hours when it ended.) 1/14/2025: T (Flurries moved through between 9:15pm and 9:50pm.) 1/16/2025: 0.5" (Occasional flurries/light snow starting around 5:45pm. A burst of near moderate snow between 6:35pm and 6:43pm. Flurries/very light snow/graupel until 7:30pm or so followed by a burst of moderate/heavy snow until near 7:45pm. Flurries taper off by 8:15pm.) 1/19/2025: 1.6" (Some wet snowflakes mixing in with light rain in the 9am hour. Off and on light rain w/ a wet flake or two until 1pm when more snow started mixing in until it was all snow by 1:30pm coming down at a moderate clip. Snow lightened up and turned into a snow/graupel mix, then mainly graupel with a little sleet mixed in during a good chuck of the 2pm hour. More snow started mixing back in around 2:45pm before becoming all snow with a legitimately heavy burst between 3:10pm and 3:16pm (2"+/hr rates). Snow became light afterwards before picking back up to moderate intensity by 4pm. By 4:30pm snow tapered off to flurries which continued on occasion into the 6pm hour before ending all together.) 2/08/2025: T (A few flakes fell between 8:45am and 9:15am, then flurries/very light wet snow from 9:15am until sometime in the 10am hour when it tapered to drizzle. Occasional drizzle throughout the day until the late afternoon when temps fell to 31F with light freezing rain.) 2/11-12/2025: 5.5" (A few flakes/flurries starting around 12:15-12:20pm picking up to a light snow by 2pm. Snow increased to moderate intensity by 5pm continuing at moderate+ rates until around 8-9pm. Light snow continuing until after midnight with flurries tapering off during the 1am hour.) 2/19/2025: T (Occasional flurries occurred between 10:45am and 1:30pm.) 2/20/2025: T (A few flakes started falling around 8:45am. Snow intensity briefly increased to 'light' between 10:05am and 10:15am before tapering back off to flurries and ending before midday.) Snow totals IMBY as of April 10, 2025: 15.8" ------------------------------------------------------------------------------------------------------------------------------------- Yes. That's right... I bumped this thread just to add two traces that I received nearly two months ago. Sue me with all your might!
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Beautiful tree with vibrant hot pink blossoms IMFY yesterday... Duller and more orangish/brownish today. RIP Temps got into the upper 20s. IAD bottomed out at 26F.
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National Weather Service Baltimore MD/Washington DC 200 PM EDT Tue Apr 8 2025 ... ..."Have gone ahead and started the growing season early and issued Freeze Warnings in coordination with surrounding offices. This is due to recent warmth and the fact we are only a few days from the typical start of the growing season for areas near and east of I-81 (excluding the Blue Ridge Mountains)"...
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IAD up to 77F.
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@CAPE What storm day is your new profile pic from?
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Random ETA: IAD actually had a midnight high of 57F. Afternoon high of 56F. Currently 53/34 there.
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A rare sunny day where afternoon high temps underperformed somewhat. IADs forecasted high: 61F Actual high: 56F
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Looks like showers will continue into the turn of the month. Happy April!
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May 4 2025 2:00AM EDT A dangerous predawn is on tap for the region. Supercells associated with an extremely violent and catastrophic tornado outbreak that has been going on across the southern US over the past 12 hours or so will continue to congeal into an intense QLCS line and blast through our region over the next couple hours. These storms will bring the threat of multiple tornadoes (some strong), destructive hurricane-force wind gusts and large hail. QLCS is currently moving through into West Virginia and southwestern Virginia. There are still supercells embedded within the line and some just out ahead of the line producing significant tornadoes. In the region as of 2am temps have risen into the upper 70sF with dewpoints getting into the 70s as a plume of unseasonably warm/moist air moves in with a powerful 80+kt LLJ. The strong LLJ and strong air pressure gradient ahead of the front will help winds gust into the 40 to 55mph range. A Wind Advisory is in place to account for this. The main story by far, obviously, will be the storms that will race across the region over the next couple of hours. Ahead of the line, temps may rise up to 80F with lower 70s dewpoints (record breaking for this time of night during this time of year). Coupled with steep MLLRs aloft (7.5-8C/km) and -11 to -12C 500mb temps, CAPE will eclipse 3,000 J/kg. Low-level shear will be very strong (500-700+ m2/s2 effective SRH) with effective bulk wind shear of 80+kts. This line will form NE moving bowing segments that (because of high DCAPE of 1200-1400+ J/kg) will contain swaths of high-end severe winds with gusts of 75-100mph leading to extensive to extreme wind damage. With the strong to extreme LL shear a couple QLCS tornadoes look likely. A strong tornado or two is possible with embedded supercells. These storms will be along the I-81 corridor around 3am moving through the Greater Washington/Baltimore metros in the 4am and 5am hours exiting east of the Bay by the 6am hour. Once storms move out winds will shift to the WNW with 30+ mph wind gusts behind the cold front with temps rebounding into the low 70s w/ much lower humidity after falling into the low 60s behind the storms. A great day for the cleanup process to begin.
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Quick look at the SPC mesoscale analysis archive. MLLRs June 4, 2008: 6.5-7C/km (modestly steep) MLLRs June 29, 2012: 8+C/km (very steep). Evening sounding confirmed MLLRs of 8.6C/km.
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