Baltimore Snow Record

8/14/2019 Baltimore Snow Record

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Some Snow NumbersFebruary 11, 2010 - Leave a Response

Snow totals as of 8:00pm Wednesday.

The official snow numbers at BWI-Marshall as of 5:00pm Wednesday.

In this same time period back in 1899 it was extremely cold and

numerous records were broken. The h igh temperatures over five

consecutive days were record low highs. Record lows were

established on three consecutive days.

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2/8

So, would you rather have record snow like the past few days or

record cold?

J o h n C o l l i n s

Categorized in Uncategorized

Snowflakes and Snow RecordsKeep Falling

February 10, 2010 - One Response

One emailer told me he thinks of this storm as a Snowatomic Bomb,

and meteorologically he might be right. The low pressure system

responsible for the blizzard conditions today was a meteorological

bomb, meaning the pressure dropped at least 1 millibar an hour for

24 hours. Tuesday evening the low was a fairly weak 1005 millibar

low developing on the coast of South Carolina. This evening, 24

hours later, the storm is an intense blizzard with a central pressure

near 976 millibarsa 29 millibar drop in 24 hours!

For Baltimore the storm has set several records:

Snowiest February 10th: 12.9

(4.0

on yesterday = two day total of16.9)

Snowiest Month: 46.6

Snowiest Winter: 77.3

To put it in perspective, as of today we are 65.2 above normal

snowfall for the winter. More than 5 feet above normal! And there

are weeks to go before the winter is over.


3/8

The storm is forecast to slowly drift out to sea tonight, bringing an

end to the heavy snow. However, strong, gusty winds can be

expected even as the storm is departing, with dangerous wind chills

and considerable blowing and drifting of snow through Thursday.

Tom Tasselmyer


Blizzardagain!February 10, 2010 - 8 Responses

A blizzard warning has been issued for the entire state of Maryland.

The center of todays blizzard is now very close to Cape May, NJ with


4/8

a central pressure near 984 millibars, or 29.07. Heavy snow

continues to wrap around the storm into Pennsylvania, Maryland,

and Delaware with isolated thundersnow in the heaviest bands. Wind

gusts over 40 mph are now being clocked in many areas east of

Baltimore. The greatest pressure falls are now near Long Island and

our in-house meso-scale computer model shows the storm pushing

north toward those pressure falls, then rotating back down the coast

of New Jersey before pushing out to sea later tonight. Expect 10-2 0

of snow for most areas with blowing and drifting through the night.

Tom Tasselmyer


2009-10BaltimoresSnowiest Winter

February 10, 2010 - 12 Responses

The climate report from the National Weather Service was just

posted and the word out of BWI-Marshall airport is that 4 of snow

fell on February 9th, pushing the winter total snowfall to 64.4,

which makes the winter of 2009-10 the snowiest winter on record

for Baltimore. The old record of 62.5 didnt last very long; it was set

in the winter of 1995-96. Official snow records go back to 1883(other weather records date back to 1871, but for some reason

snowfall records begin in 1883), and only three times prior to this

winter was there more than 50 of snow in a single winter season,

most recently in 2002-03 when 58.1fell. This years record

breaking snowfall is significant in that the record was broken with

more than half of February and all of March still looming for

potential snowstorms.

In fact the snow is still falling tonight and the coastal low appears to

be intensifying as it moves north toward Virginia Beach. Lightning

strikes are now showing up over the Atlantic Ocean east of the

Virginia/North Carolina state line. A general 4-8 snowfall blanketed

the area Tuesday evening. Wednesday morning the upper level low

over Kentucky is forecast to move east, causing the coastal storm to

bomb into a powerful noreaster with additional snow likely towrap around the west side of the storm into Maryland. Expected

snowfall totals have been cut back a few inches due to the intrusion

of some freezing rain and sleet, but a general 10-16 accumulation is

still expected by Wednesday evening along with strong, gusty

northwest winds from Wednesday afternoon into Thursday.

Check Out Snow Photos Here!

Check Out WBAL Viewer Photos Here!


5/8

Tom Tasselmyer


BombogenesisFebruary 9, 2010 - One Response

A meteorological bomb is defined as:

b o m b An extratropical surface cyclone with a central pressure

that falls on the average at least 1 mb h1 for 24 hours.

In other words, a meteorological bomb is a storm that rapidly

intensifies for at least 24 hours. The image above shows the forecast

position of our latest coastal storm Wednesday around 1pm. It is

forecast to undergo bombogenesis off the New Jersey coast,

dropping some 32 millibars from 7pm this evening to 7pm

Wednesday. This should produce heavy snow from central and

eastern Maryland up the coast to southern New England plus, very

strong winds, perhaps gusting to 50 mph. So, while total snowfall is

expected to be about 1/2 of last Saturdays storm (10-20

this timecompared to 20-40 last weekend), the strong winds will likely

produce quite a bit of blowing and drifting, possibly blizzard

conditions, as the storm is strengthening off the coast Wednesday

afternoon into Thursday.

Tom Tasselmyer


It Is Starting UpFebruary 9, 2010 - Leave a ResponseAt mid afternoon there have been some reports of areas of light

snow. None of it appears to be sticking at this stage.


6/8

The afternoon satellite image shows the extent of the storm over the

eastern third of the country. Skies have cleared over a portion of the

central Mississippi Valley and you can see snow deposited on the

ground by the storm.

The low track on this storm is expected to take a more northerly

course once over the Atlantic than the weekend storm. This will

generate a different snow accumulation pattern than the last storm.

One National Weather Service high resolution computer model

shows the heaviest snows are expected to fall just north of the

Baltimore area, reaching toward northern New Jersey. This model

targets some areas of southeast Pennsylvania and extreme northern

Maryland for close to 20 inches of snow.

A model we use in the weather office shows a similar pattern for snow

accumulation. There appears to be a trend to forecast a rapid drop

off in snow accumulation from the immediate Baltimore area

southward. In round numbers, this storm will probably produce

about one half of the snow that fell in the last storm. By any measure

though, that is a lot of snow for one event. The intensification of the

storm over the Atlantic will also generate windy conditions, adding

to the complications this storm will bring to the area.


7/8

Tom, Tony and Sandra will have the latest forecast numbers tonight

and tomorrow morning when the heaviest is expected to fall. Also

check out updates on wbaltv.com.

J o h n C o l l i n s


More Heavy Snow On The Way

February 9, 2010 - 2 Responses

The morning weather map showed another double-barreled storm

headed this way. Low pressure near Kansas City and another on the

gulf coast near New Orleans will phase into one powerful coastal

storm east of Norfolk, VA by Wednesday morning. The end result

will be more heavy snow for the Baltimore area. Computer models

are cranking out another 1.3 to 1.5 liquid precipitation, which

should result in 12-20 of snow across the area, with the heaviest

amounts north and west of Baltimore. And, once again, conditions

look favorable for some thundersnow as the upper level low pressure


8/8

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system crosses the area, especially between 7am and 1pm on

Wednesday. Stay tuned for updates as the storm approaches.

Tom Tasselmyer

Cate orized in Uncate orized

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