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March 1-2 wind event


Ji

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17 minutes ago, yoda said:

Isn't this tweet for NE?

Did you even look at the maps, yoda? Last I checked, our areas are being shown on those maps, even if the person who tweeted them wasn't hashtagging md, va and dc

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Just now, mappy said:

Did you even look at the maps, yoda? Last I checked, our areas are being shown on those maps, even if the person who tweeted them wasn't hashtagging md, va and dc

I can't see the map at work, i saw the hashtags and they didn't have VA/MD/DC... my fault

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7 minutes ago, LongBeachSurfFreak said:

Pretty serious winds for you guys. When I lived down there we had pretty serious tree damage with Isabelle in 03. Granted that was with trees in leaf but if you start talking 70mph gusts with saturated soils there will be damage 

Yea this is essentially a tropical storm sans the rain.

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For posterity, the afternoon AFD.  This could be one of the strongest non-convective wind storms in several years.

 

Quote

FXUS61 KLWX 011928
AFDLWX

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
228 PM EST Thu Mar 1 2018

.SYNOPSIS...
Low pressure will pass by to the north tonight and it will
rapidly intensify as it develops into a coastal low off the New
England Coast for Friday. The low will slowly drift east Friday
night through Saturday. High pressure will gradually build
overhead Saturday night through Monday. Low pressure may impact
the area Tuesday and Wednesday of next week.

&&

.NEAR TERM /THROUGH TONIGHT/...
Low pressure over the Ohio Valley will pass by to our north
tonight and it will rapidly intensify as it develops into a
coastal low off the New England Coast by Friday morning. 

The warm front associated with the low has stalled to our south
and west over the Potomac Highlands into Central Virginia. Rain
is expected to fill in late this afternoon into this
evening...particularly across most of Maryland, eastern West 
Virginia, northern Virginia and the Washington/Baltimore 
Metropolitan areas. This is due to increased frontogenetical 
forcing ahead of the warm front as the low passes by to the 
north. The cold front associated with the low will pass through 
our area late this evening and overnight, first across locations
west of the Blue Ridge Mountains between 9 pm and midnight, 
then across the rest of the area between midnight and 3 am. A 
wind shift to the west and northwest is expected behind the 
front and strong winds will accompany that shift. The gradient 
will continue to strengthen overnight causing strong winds. 
Winds at the top of the mixing layer are around 60 to 75 knots 
according to the latest NAM/GFS bufkit forecast soundings. Not 
all of those winds are expected to make it to the surface due to
the unfavorable timing, but gusts of 60 to 70 mph are expected 
especially toward morning. A High Wind Warning is in effect for 
the entire area except extreme northeastern Maryland. Gusty 
winds are still expected across northeastern Maryland, but 
confidence was not high enough to begin the High Wind Warning 
tonight since the wind field aloft may be weaker closer to the 
low passing by to the north. 

Upslope snow showers will develop behind the cold front late
this evening and overnight. Accumulating snow is expected and
travel will be hazardous across these areas due to the strong
winds and snow. 

&&

.SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/...
Low pressure will continue to rapidly intensify off the New
England Coast Friday before slowly drifting east Friday night
and Saturday. A very strong pressure gradient will continue to
cause strong winds over the entire area through Friday night. A
High Wind Warning is in effect with gusts around 60 to 70 mph 
expected. Could see gusts even a bit higher than 
that...especially across the ridge tops. The strongest winds are
expected Friday well into Friday night before diminishing 
slightly toward morning. The fact that this is a long duration 
event and the ground will already be saturated means that 
widespread tree damage is expected along with power outages. 
This is going to be one of the most power wind storms in recent 
years. Through this evening...it is a good time to secure 
lightweight objects outside, and check flashlights and batteries
as well as other items needed in a power outage.

Upslope snow will continue along and west of the Allegheny Front
Friday A Winter Weather Advisory continues for these areas. The
combination of snow and blowing snow will reduce vsbys below
one-half mile at times making travel very difficult. 

Wrap around rain and snow showers are likely across the northern
and eastern portions of the CWA Friday morning, including the
Washington and Baltimore Metropolitan areas. Snowfall could
coat some grassy surfaces but recent warm conditions and
marginal temperatures suggest that paved surfaces will be wet. 

High pressure will gradually build toward the region Saturday
through Saturday night. Gusty winds are still expected Saturday
with 30 to 45 mph gusts most likely. Winds will gradually
diminish Saturday night but it will still be blustery. 

 

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I will be impressed if winds do end up hitting some of the high end outputs from the models. Outside tropical systems (Sandy included) and the derecho... getting prolonged high end winds seem hard to come by. Not to say it won't be windy, but 60+ gusts for hours? I remain skeptical on that. 

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12 minutes ago, mappy said:

I will be impressed if winds do end up hitting some of the high end outputs from the models. Outside tropical systems (Sandy included) and the derecho... getting prolonged high end winds seem hard to come by. Not to say it won't be windy, but 60+ gusts for hours? I remain skeptical on that. 

Did you live in your current location during the 2012 derecho, and if so, what were the effects up that way? That derecho remains the "high bar" of wind events in my lifetime, including living here in southeastern Fairfax County for the past 30 years and spending the first 20 years growing up in northcentral PA. Never before nor ever since, in either VA or PA, have I seen mature, 50'-60' trees bend at 45 degrees (or greater!) in the wind at the front edge of that derecho...  :stun:

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22 minutes ago, vastateofmind said:

Did you live in your current location during the 2012 derecho, and if so, what were the effects up that way? That derecho remains the "high bar" of wind events in my lifetime, including living here in southeastern Fairfax County for the past 30 years and spending the first 20 years growing up in northcentral PA. Never before nor ever since, in either VA or PA, have I seen mature, 50'-60' trees bend at 45 degrees (or greater!) in the wind at the front edge of that derecho...  :stun:

I got hit flush by a microburst in July of 09 (or 10?). Took the tops off of 3 of my trees and one of them went through my roof and dining room ceiling. The wind was so strong that the grass was laying completely flat on the ground. NWS estimated gusts in the low 70's. That was more intense than the derecho in my yard but only lasted maybe 15 minutes. Tomorrow AM has the potential for a fairly prolonged period of strong winds. It's going to get a lot of people's attention. No doubt about that. 

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52 minutes ago, mappy said:

I will be impressed if winds do end up hitting some of the high end outputs from the models. Outside tropical systems (Sandy included) and the derecho... getting prolonged high end winds seem hard to come by. Not to say it won't be windy, but 60+ gusts for hours? I remain skeptical on that. 

This reeks of being overhyped and lame.

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How many times since the derecho have all 3 DC airports, if at all, reported 40* sustained and 60+ gusts? There was a 36 hour March wind event about 3 years ago that started a bunch of fires.

most  wind here was July 2010 thunderstorms with 70mph  gusts and NWS surveyed area and estimated peak wind gust streaks of 80/90

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Per CWG  https://www.washingtonpost.com/news/capital-weather-gang/wp/2018/03/01/high-wind-warning-fridays-noreaster-may-bring-worst-wind-storm-to-washington-region-since-sandy-in-2012/?tid=pm_local_pop

 

This event will share similarities to some other recent high-wind events:

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Thankfully no leaves yet on the trees, if we did can you imagine the overall damage. Not saying there will not be damage, but at least many trees stand a better chance of not being split, uprooted and damaged. Those gusts are wicked! 

 

 

 

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I just read in the latest AFD that we will have gusts between 60 and 70 mph for at least a 12 hour period.

I thought this was supposed to be 50 to 60 mph. Why so severe?

I can't even begin to imagine the devastation in Dale City after a 12 hour period of 60 to 70 mph wind gusts.

Maybe the NWS meant 50 to 60 mph? Maybe it was only a typo?

Please for the love of god, please tell me it was only a typo.

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