2013 Mid-Atlantic Severe General Discussion

[WxUSAF]

Might have gusted to 10kts?

[Ian]

I doubt I was anywhere close to 53 here. DCA got a bit of a wind max right over the airport.

[MN Transplant]

Might have gusted to 10kts?

 

13mph here.

[Ellinwood]

Pretty lame in Gaithersburg... was hoping for/expecting a little better. Oh well... one day closer to the Plains trip.

[DDweatherman]

Raining at around 15mph here west of Bmore at my cousins. 

[smokeybandit]

My poorly positioned weather station only picked up 21mph.  That gust was easily double that.

[ThePhotoGuy]

Multiple trees into homes in Arnold.

[mappy]

Absolutely pouring here. My patio is flooded

[Ian]

Pretty lame in Gaithersburg... was hoping for/expecting a little better. Oh well... one day closer to the Plains trip.

28 days!!!

[smokeybandit]

Multiple trees into homes in Arnold.

I've got a dead tree in my back yard that I'm shocked didn't blow over during that cell

[ThePhotoGuy]

Multiple trees into homes in Arnold.

At least 1 structure on fire in the area possibly another also.

[ThePhotoGuy]

Arnold/Severna Park area always seems to get a lot of bad weather. Not sure why.

[wxmeddler]

Most Severe I saw.. in the LSR's:

 

000
NWUS51 KLWX 192333
LSRLWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
733 PM EDT FRI APR 19 2013

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0712 PM TSTM WND GST 2 ENE ST. CHARLES 38.61N 76.89W
04/19/2013 M70 MPH CHARLES MD MESONET

MESONET OBSERVATION

 

&&
EVENT NUMBER LWX1300079
$
SMZ

[ThePhotoGuy]

Most Severe I saw.. in the LSR's:

Should have been back home towards Arnold way

[wxmeddler]

Arnold/Severna Park area always seems to get a lot of bad weather. Not sure why.

 

My hunch is that the wind drives up the rivers (Severn and Magothy) with the decreased friction and creates a microscale backed wind field.  This increases the helicity in the lowest levels and you end up with brief spin-ups. I've often observed on my weather station at home that my winds are from the center of the river (120°) when the synoptic wind field is between 200° and 170°.

[Subtropics]

Storm was an overproducer IMBY. Stop sign shaking violently made it look like I was watching a hurricane video on youtube. I would say gusted easily to 50 eyeballing' it.

[smokeybandit]

Arnold/Severna Park area always seems to get a lot of bad weather. Not sure why.

 

Lots of big old trees.

[Eskimo Joe]

Absolutely pouring here. My patio is flooded

Want me to send in FEMA?

[Ian]

cold front has some nice rain rates

[clueless]

Underperformed in Leesburg.

[Ian]

my guess is something may have touched down south of here. pretty solid couplet for one scan. quick hitter tho and quickly fell apart/ran outside the late box.

 

[wxmeddler]

my guess is something may have touched down south of here. pretty solid couplet for one scan. quick hitter tho and quickly fell apart/ran outside the late box.

 

 

Let me see if I can find anything on the TDWR's for that.

 

In the mean time, here are my pictures for the day. Went about 30 miles W of college home out to the hilly farm country. Saw a shelf cloud and a rain-wrapped book end vortex mesocyclone (note the sharp convective left edge.)

[ThePhotoGuy]

My hunch is that the wind drives up the rivers (Severn and Magothy) with the decreased friction and creates a microscale backed wind field. This increases the helicity in the lowest levels and you end up with brief spin-ups. I've often observed on my weather station at home that my winds are from the center of the river (120°) when the synoptic wind field is between 200° and 170°.

 

Interesting, thanks!! It just seems over the years that this area often gets hit much harder than surrounding areas.

[Ian]

east coast ftw (and dc area split)

 

[Ian]

Let me see if I can find anything on the TDWR's for that.

 

In the mean time, here are my pictures for the day. Went about 30 miles W of college home out to the hilly farm country. Saw a shelf cloud and a rain-wrapped book end vortex mesocyclone (note the sharp convective left edge.)

shelfcloud_eastberlinPA_2136.PNG

mesocyclone_eastberlinPA_2136..PNG

cool shots

[SouthernNJ]

Wondering if there was a tornado in the Fredericksburg-Leland

area in Stafford county.  The reports coming in are suspicious

and the rotating bookend comma head was moving through at

the time.  I would imagine LWX will do a survey.  Could have

been a macroburst instead though, as the SVR called for

70+ mph winds.

[mappy]

Absolutely pouring here. My patio is flooded

Want me to send in FEMA?

We survived, but thank you for the offer

[wxmeddler]

Slight brag. Thanks to AllWeather for the hook up on the Sat. morning newscast.

[Ian]

Fredericksburg

 

Time: 2013-04-19 22:36 UTC
Event: 0 TORNADO
Source: nws storm survey
Remark: ef-1 tornado confirmed by nws storm survey. peak winds 90 mph. path length 0.75 mile. max path width 150 yards. apartment building unroofed. trees uprooted and topped. shopping plaza roof damaged.

[wxmeddler]

Fredericksburg

 

Time: 2013-04-19 22:36 UTC

Event: 0 TORNADO

Source: nws storm survey

Remark: ef-1 tornado confirmed by nws storm survey. peak winds 90 mph. path length 0.75 mile. max path width 150 yards. apartment building unroofed. trees uprooted and topped. shopping plaza roof damaged.

 

Downloaded the Level 2 data for that time. The level 3 data from the TDWR's are delayed two days. There was no TDS in the correlation coefficient.