February 10, 2021

February 10, 2021

Feb 10(Wed)

Cloudy, high ground fog, rime, afternoon period of snow, some area saw little freezing rain late evening ahead of main round of snow.

Bittinger 2nw Valley

Foxtown Rd morning 2/10/21
Foxtown Rd morning 2/10/21
west of Bittinger morning 2/10/21
west of Bittinger morning 2/10/21
west of Bittinger morning 2/10/21
near Bittinger 2nw morning 2/10/21
near Bittinger 2nw morning 2/10/21
Bittinger 2nw Valley morning 2/10/21
Bittinger 2nw Valley morning 2/10/21
Bittinger 2nw Valley morning 2/10/21
Bittinger 2nw Valley morning 2/10/21
Bittinger 2nw Valley morning 2/10/21
Bittinger 2nw Valley morning 2/10/21
west of Bittinger morning 2/10/21
Rock Lodge Rd near The Glades morning 2/10/21
Bittinger 2nw Valley afternoon 2/10/21
Bittinger 2nw Valley afternoon 2/10/21
Bittinger 2nw Valley afternoon 2/10/21
Bittinger 2nw Valley afternoon 2/10/21
Bittinger 2nw Valley afternoon 2/10/21
Bittinger 2nw Valley afternoon 2/10/21
Bittinger 2nw Valley morning 2/10/21
Bittinger 2nw Valley evening 2/10/21

Garrett College

McHenry 2/10/21
Deep Creek Lake morning 2/10/21
McHenry evening 2/10/21

Canaan Heights/Davis 3SE

precip T 7am

Year to date total precip 5.72

new snowfall T

Season to date total snowfall 86.9

comments and data by Dave Lesher at:

http://data.canaanmtnsnow.com

Cloudy and cold at daybreak. Light snow commenced shortly after mid day, continuing lightly but with little accumulation until late afternoon when changing to freezing rain, then back to snow mid evening

Climate Reference Network Canaan

Cabin Mt at Bald Knob

Cabin Mt-Western Sods

Timberline

Spruce Knob

Canaan Valley Refuge

Mt. Davis

Dy007-Canaan Valley Refuge 3150′, Dy002-Cabin Mt at Bald Knob 4350′, Dy003-Cabin Mt/Sods 4035′,,Dy004-Spruce Knob 4820′, Cvpw2-Climate Reference Network Canaan 3479′, KW99-Petersburg Grant County Airport 961′

The Valley vs Cabin Mt

Canaan area temps

High Ground Comparison

Up High and Down Low

Up High, High Valley, Low Valley

RTMA

Radar

Satellite

Flow

Surface features and 500mb height anomalies and flow

Snowshoe

7Springs

Morning Update:

Post made 7:30am 2/10/21

Winter Storm Warnings out for the pink, winter weather advisories purple

A 2 part event that has lots of variances on placement of part 2 later Thursday into Friday. NWS siding with the Euro.

https://forecast.weather.gov/wwamap/wwatxtget.php?cwa=rlx&wwa=winter storm warning text details

NWS updated expectations- Charleston has upped the amounts for Randolph as it looked likely yesterday and Sterling lowered amounts Garrett, and thats heavy Euro based forecast. Sterling office leans very heavy on the Euro. Lately, it has not performed well. So we’ll see

new forecast
Yesterdays forecast

What changed, lets look at the Euro progression of the last several runs

yesterday’s 6z when Sterling was all on the higher amounts
12z euro, they retained higher amounts
18z euro lowering amounts
00z Sterling reduces expectation that greatly mirror the euro changes
latest 6z run not factored in to forecast yet and hints at a possible north focus

In most regards the Euro is the top model. Lately its been terrible in the 3 day window. The storm last week it was not good on the final piece of energy Tuesday night, Wednesday morning that brough in several inches of fluff and what turned out to be the nastiest night to date of the winte . With that event, Sterling had no advisories, nothing until 3am after the snow was mostly done. Which was mostly pointless at that time. The reason, the Euro completely missed that event once we got to within 3 days. It did have it around 3 days away then lost it. I asked the Sterling office on Sunday last week if their snow maps reflected the high ratio fluff that looks to occur Tuesday night as the snow map for Garrett and Allegany were identical. My reply was, we expect no snow in our entire forecast area Tuesday night. Then it turned out to be a nasty night.

The GFS handled that well. Now the question looms is it handling this event well as it is a bit of an outlier, but its also been the most consistent the last 3 days. The runs have barely changed and have not been weak, strong, north to south like the Euro and other modeling. Lets look at the last 5 runs of the GFS

6z yesterday
12z yesterday
18z yesterday
0z today
6z today

Hows that for consistency? Even the ensemble mean has held consistent ..newest to oldest

The forecast from Charleston yesterday morning

yesterday
todays update

Pitts amounts

this only out through part 1.
high end amount is really a worthless product. Often the high end map overlaps the expected. That should never be the case.

The biggest question with this is part 2 tomorrow

GFS tomorrow night. The furthest north. It is the outlier, but most consistent
Euro for the same time period. Much further south and this would allow for the lower expectations to verify. However the Euro has been anything but consistent
Canadian splits the difference
the Nam with its typical bundle of energy issues
short range Canadian a bit north
HRRR just a weak wave..48 hours is far out for this model

overall a 5-10″ event from Cambria to Pocahontas is still my thoughts with locals Garrett to to Wv ….12+ in spots if the GFS verifies. Still like 5-10″ regardless.

After this passes by, another round over the weekend to watch, and mid next week. Mid range from the models will come with lots of run to run changes over the coming days.

mother nature will have the final say…..

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