yoda Posted April 29, 2021 Share Posted April 29, 2021 Yay we got added in! URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 232 PM EDT Thu Apr 29 2021 DCZ001-MDZ013-VAZ053-054-300245- /O.EXA.KLWX.HW.A.0002.210430T1500Z-210501T0900Z/ District of Columbia-Prince Georges-Fairfax- Arlington/Falls Church/Alexandria- Including the cities of Washington, Bowie, Suitland-Silver Hill, Clinton, College Park, Greenbelt, Laurel, Camp Springs, Reston, Herndon, Annandale, Centreville, Chantilly, McLean, Franconia, Arlington, Alexandria, and Falls Church 232 PM EDT Thu Apr 29 2021 ...HIGH WIND WATCH IN EFFECT FROM FRIDAY MORNING THROUGH LATE FRIDAY NIGHT... * WHAT...Potential for west-northwesterly wind gusts of 60 mph. * WHERE...The District of Columbia, Prince Georges County in Maryland, and Arlington and Fairfax Counties in Virginia including the independent cities of Alexandria, Fairfax and Falls Church. * WHEN...From Friday morning through late Friday night. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...The highest wind may occur in two waves: one Friday afternoon, and a second Friday evening. 1 Link to comment Share on other sites More sharing options...
yoda Posted April 29, 2021 Share Posted April 29, 2021 @nj2va approves! URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 232 PM EDT Thu Apr 29 2021 MDZ001-VAZ503-WVZ501-505-300245- /O.NEW.KLWX.FZ.A.0003.210501T0400Z-210501T1300Z/ Garrett-Western Highland-Western Grant-Western Pendleton- Including the cities of Mountain Lake Park, Oakland, Grantsville, Hightown, Bayard, Mount Storm, and Riverton 232 PM EDT Thu Apr 29 2021 ...FREEZE WATCH IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY MORNING... * WHAT...Sub-freezing temperatures as low as 31 possible. * WHERE...In Maryland, Garrett County. In Virginia, Western Highland County. In West Virginia, Western Grant and Western Pendleton Counties. * WHEN...From late Friday night through Saturday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. 1 Link to comment Share on other sites More sharing options...
yoda Posted April 29, 2021 Share Posted April 29, 2021 No thanks LWX re wind from their afternoon AFD .SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/... Low pressure is expected to deepen steadily near New England Friday, and a secondary cold front will follow Friday afternoon and evening. This will cause strengthening winds across the region, with a rather notable late season non-convective wind event appearing increasingly likely. The latest guidance shows steep lapse rates from the surface into the mid levels of the atmosphere, where winds of well over 60 mph are forecast (about 5000 to 10000 feet above the ground). While not all of this wind is unlikely to consistently mix all the way to the ground, gusts of 50 to 55 mph are still likely at the surface, with peak gusts to around 60 mph possible. The highest wind may come in two waves: one with peak diurnal mixing generally between 1 PM and 5 PM behind the secondary cold front, and another with the mid-level trough axis during the evening. The wind probably won`t die down more appreciably until very late Friday night or early Saturday morning. The extended period of wind and leafed-up trees may lead to more widespread power outages and tree damage. Link to comment Share on other sites More sharing options...
CAPE Posted April 29, 2021 Share Posted April 29, 2021 Mount Holly is still bullish on the damaging wind potential as well. A strong weather system remains on track to affect the region on Friday. We are expecting very windy conditions from early Friday afternoon through much of Friday night. Gusts over 45 mph are likely, and gusts to near 60 mph are possible. Scattered instances of downed trees and power outages are also expected, especially given many trees are now bearing leaves. This will likely be an impactful event. Very little change in the forecast philosophy this cycle. A cold front will be offshore by Friday morning. A strong shortwave trough and associated vort max will rotate through the region during the afternoon hours, which will also send a reinforcing cold front through. This is a dynamically impressive system, with very strong height falls expected in the local area tomorrow afternoon and evening. The approaching shortwave and good jet dynamics will also yield rapid intensification of low pressure departing into the Canadian maritimes, with its pressure dropping near to below 980 mb. At the same time, high pressure will be moving into the Great Lakes, which combined with the deepening low to the northeast will create a very strong pressure gradient, maximized over the mid-Atlantic. Link to comment Share on other sites More sharing options...
CAPE Posted April 29, 2021 Share Posted April 29, 2021 Pretty impressive looking vorticity lobe at h5, and pressure gradient between the deepening low moving off the Maritimes and high pressure building in from the NW. 1 Link to comment Share on other sites More sharing options...
WxUSAF Posted April 29, 2021 Share Posted April 29, 2021 Boomers for @mappy, @losetoa6, and @psuhoffman? Hoping the southern end sweeps over me. Link to comment Share on other sites More sharing options...
Eskimo Joe Posted April 29, 2021 Share Posted April 29, 2021 17 minutes ago, WxUSAF said: Boomers for @mappy, @losetoa6, and @psuhoffman? Hoping the southern end sweeps over me. Ahem. Link to comment Share on other sites More sharing options...
mappy Posted April 29, 2021 Share Posted April 29, 2021 Decent windy shower right now. No thunder 1 Link to comment Share on other sites More sharing options...
arlwx Posted April 29, 2021 Share Posted April 29, 2021 Here's hoping that everyone has lots of cereal, nuts and other things not needing a refrigerator. AND a manual can opener for opening tinned meat ((which doesn't need to be cooked)). ((No news on people making a dash for the stores that might lose power...) 1 Link to comment Share on other sites More sharing options...
dailylurker Posted April 29, 2021 Share Posted April 29, 2021 10 minutes ago, arlwx said: Here's hoping that everyone has lots of cereal, nuts and other things not needing a refrigerator. AND a manual can opener for opening tinned meat ((which doesn't need to be cooked)). ((No news on people making a dash for the stores that might lose power...) 50-60 mph gust shouldn't cause widespread long duration power outages. 60 mph is right on the line though. Seems like that's the threshold in this area during the warm season for uprooting large trees. Already breezy out there. Link to comment Share on other sites More sharing options...
WxUSAF Posted April 29, 2021 Share Posted April 29, 2021 1 hour ago, WxUSAF said: Boomers for @mappy, @losetoa6, and @psuhoffman? Hoping the southern end sweeps over me. Swing and a miss for me outside a sprinkle. Link to comment Share on other sites More sharing options...
Stormfly Posted April 29, 2021 Share Posted April 29, 2021 1 hour ago, arlwx said: Here's hoping that everyone has lots of cereal, nuts and other things not needing a refrigerator. AND a manual can opener for opening tinned meat ((which doesn't need to be cooked)). ((No news on people making a dash for the stores that might lose power...) Can't do w/o power here! Diesel tanks topped off (575 gallons on the gauge) and both gennies ready to spring into action if needed. Not sure because in our neck of the woods even with 3 phase power all it takes is a dumb limb to hang up and trip out a recloser. And trimming schedules have fallen way behind, lots of green far closer than 10' to primaries. We did get a nice shower that put down nearly half an inch. Gutter on west side overflowing, full of spruce needles I'm sure. If it were up to me I'd have all these (trees) leveled out but wife says hell no. There was some lightning picked up but to our south and east, didn't hear thunder but then again it would have had to been on the loud side with the "sizzling of bacon" sound of torrents of water hitting rocks! This time let's hope the wind forecast busts a bit low which they usually do. Could be like the wind we have a few weeks ago. Most of deciduous here aren't close to full out but either way once that wind gusts past the old double nickel more than a few times otherwise healthy limbs become widow makers and that's not good. Definitely don't want the kids playing near the trees. 1 Link to comment Share on other sites More sharing options...
Eskimo Joe Posted April 30, 2021 Share Posted April 30, 2021 New event. High Wind Warning from 4/30/2021 12:00 PM to 5/1/2021 2:00 AM EDT for Montgomery County, MD, Carroll County, MD: https://inws.ncep.noaa.gov/a/a.php?i=56744111 2 Link to comment Share on other sites More sharing options...
Kmlwx Posted April 30, 2021 Share Posted April 30, 2021 Looking at the NAM nest and HRRR wind gust product over on the CoD site - you'd not expect a HWW...both are relatively tame with gusts outside the ridge tops. Link to comment Share on other sites More sharing options...
pazzo83 Posted April 30, 2021 Share Posted April 30, 2021 damn it's still 80F here downtown. 78 at DCA. That's crazy for 11pm in frickin April. Link to comment Share on other sites More sharing options...
WeatherShak Posted April 30, 2021 Share Posted April 30, 2021 damn it's still 80F here downtown. 78 at DCA. That's crazy for 11pm in frickin April.Looks like a nice little squall line about to come through. Link to comment Share on other sites More sharing options...
SomeguyfromTakomaPark Posted April 30, 2021 Share Posted April 30, 2021 Winds are cranking with this little line. Loud as hell outside. Link to comment Share on other sites More sharing options...
pazzo83 Posted April 30, 2021 Share Posted April 30, 2021 8 minutes ago, WeatherShak said: Looks like a nice little squall line about to come through. yep - some nice wind with this one. 1 Link to comment Share on other sites More sharing options...
pazzo83 Posted April 30, 2021 Share Posted April 30, 2021 and just like that we're in the upper 60s. lol. Link to comment Share on other sites More sharing options...
H2O Posted April 30, 2021 Share Posted April 30, 2021 The winds are really starting to pick up now Link to comment Share on other sites More sharing options...
mattie g Posted April 30, 2021 Share Posted April 30, 2021 Really pretty morning out there. A few breezes, but that's it. 2 Link to comment Share on other sites More sharing options...
CAPE Posted April 30, 2021 Share Posted April 30, 2021 The high impact winds will develop later this afternoon and persist into tonight. Hoping the 60 mph gusts in my forecast don't materialize. I have enough outside stuff to do without having to clean up tree debris. At least the soil is pretty dry. Link to comment Share on other sites More sharing options...
Eskimo Joe Posted April 30, 2021 Share Posted April 30, 2021 Quote FXUS61 KLWX 301349 AFDLWX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 949 AM EDT FRI APR 30 2021 .SYNOPSIS... A SECONDARY COLD FRONT WILL MOVE THROUGH TODAY. HIGH PRESSURE WILL BUILD IN FROM THE GREAT LAKES OVER THE WEEKEND, THEN SHIFT OFFSHORE NEXT WEEK AS ANOTHER FRONTAL SYSTEM APPROACHES FROM THE WEST. && .NEAR TERM /THROUGH TONIGHT/... 10:00AM UPDATE: HAVE ADDED MOST OF THE DC METRO AND THE BLUE RIDGE TO THE HIGH WIND WARNING AND MAKE A SLIDE EXPANSION TO THE WIND ADVISORY IN CENTRAL VIRGINIA BASED ON THE LONG DURATION OF THE WIND AND HIGHER CONFIDENCE IN A SLIGHTLY STRONG WIND FIELD. NOTE THAT THE EXTENDED DURATION OF STRONG WINDS WILL LIKELY RESULT IN WIDESPREAD TREE DAMAGE AND POWER OUTAGES. Link to comment Share on other sites More sharing options...
GATECH Posted April 30, 2021 Share Posted April 30, 2021 High wind warnings extended south into NOVA. Link to comment Share on other sites More sharing options...
GATECH Posted April 30, 2021 Share Posted April 30, 2021 Just now, Eskimo Joe said: Great...I hate wind. 1 Link to comment Share on other sites More sharing options...
Eskimo Joe Posted April 30, 2021 Share Posted April 30, 2021 Pretty decent pick up in the wind over the past 30 min. Link to comment Share on other sites More sharing options...
Potvinsux Posted April 30, 2021 Share Posted April 30, 2021 Cold 39° with windchill in 20's. Flurries off and on this morning. In Snowshoe....btw Link to comment Share on other sites More sharing options...
mattie g Posted April 30, 2021 Share Posted April 30, 2021 14 minutes ago, Potvinsux said: Cold 39° with windchill in 20's. Flurries off and on this morning. In Snowshoe....btw Sounds awful Link to comment Share on other sites More sharing options...
Kmlwx Posted April 30, 2021 Share Posted April 30, 2021 Sun doing the mixing work it seems. Good gusts here in Colesville now. Link to comment Share on other sites More sharing options...
high risk Posted April 30, 2021 Share Posted April 30, 2021 One thing to watch is a secondary cold front that will move through in the very late afternoon. NAM Nest is most aggressive is actually generating a line of very gusty showers on the front. The frontal passage itself will likely enhance the winds even further. 1 Link to comment Share on other sites More sharing options...
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