batmanbrad

another line approaching MoCo has promoted yet another warning: Severe Thunderstorm Warning MDC031-212215- /O.NEW.KLWX.SV.W.0310.181221T2129Z-181221T2215Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Baltimore MD/Washington DC 429 PM EST FRI DEC 21 2018 The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for... Montgomery County in central Maryland... * Until 515 PM EST. * At 429 PM EST, more severe thunderstorms were located along a line extending from Lansdowne to Reston, moving northeast at 45 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Damaging winds will cause some trees and large branches to fall. This could injure those outdoors, as well as damage homes and vehicles. Roadways may become blocked by downed trees. Localized power outages are possible. Unsecured light objects may become projectiles. * Locations impacted include... Germantown, Rockville, Bethesda, Gaithersburg, Olney, Damascus, Lansdowne, Lowes Island, Poolesville, Aspen Hill, Potomac, North Bethesda, Montgomery Village, North Potomac, Redland, Great Falls, Boyds, Rossmoor, Wheaton-Glenmont and Wheaton. PRECAUTIONARY/PREPAREDNESS ACTIONS... Get indoors to protect yourself from wind and lightning. Trees around you may be downed from damaging winds, so if you are near large trees, move to an interior room on the lowest floor. Don`t drive underneath trees or in wooded areas until the threat has passed. && LAT...LON 3934 7718 3927 7714 3924 7705 3919 7700 3917 7701 3916 7698 3897 7719 3898 7724 3903 7726 3906 7733 3907 7745 3913 7752 3925 7740 3934 7720 TIME...MOT...LOC 2129Z 220DEG 40KT 3908 7746 3894 7735 HAIL...<.75IN WIND...60MPH $$ DHOF

I'm near Laytonsville... been coming down really hard last 15 min. or so, severe t-storm warning for my area - a few rumbles of thunder, lot of wind, no hail yet. looks like the line is nearly gone but has been training over the same area. Wouldn't be surprised at a few localized flash flood warnings...

Switching over to the CMC, it appears to be a nice hit at 108!

apologies if this has already been posted earlier in the thread (I couldn't find any references), but for those who follow Wes Junker in the Capital Weather Gang section of the Washington Post, here is his take on the potential weekend storm, written earlier this afternoon: https://www.washingtonpost.com/weather/2018/12/03/washington-region-may-sit-edge-winter-storm-this-weekend/?utm_term=.1fd9a5cdf404

Yes, they are letting the STW expire, but still, pretty solid line - I'll guess it will have some impact (game is only in the 3rd inning right now) probably between 10:30PM and 11PM. Saw some video from the ballpark when the heavy stuff hit in mid afternoon there, ground crew did a good job of keeping the field playable.

if that line holds together and keeps moving (35MPH according to the latest severe weather statement from NWS), the latter part of the ASG could be impacted...

interesting how we've been able to get a couple of tornado warnings (even if only radar-indicated) when SPC indicated in an MD earlier that there was only a 20% chance of a watch!

new 12:30PM D1 convective outlook just issued from SPC has added a Marginal Risk for parts of the DC area: ...PA/MD/VA... Visible satellite imagery shows a pocket of strong heating occurring over parts of southern PA into northern VA. Meanwhile, a back-door cold front is surging southward into the region. Given the moist/unstable air mass in this region, have added a MRGL risk for afternoon thunderstorms spreading east-southeastward as an weak upper trough grazes the area. Locally gusty winds and hail are possible with the strongest cells.

looks like SPC issued a MD at 4PM for the northeastern parts of our area with 95 percent chance of a watch: http://www.spc.noaa.gov/products/md/md0392.html