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Jan 22-24 blizzard obs, tracking, nowcasting #2


Ian

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Surrounding obs indicate that DCA was part of the snow hole created by my flamethrower (ha.ha.)

 

Seriously:

 

ANACOSTIA 19.0 715 PM

1 WNW REAGAN NATIONA 19.4 927 PM

1 WNW NATIONAL HARBOR 17.0 755 PM

1 WSW CHERRYDALE 18.0 1020 PM

 

Plus:

unofficial measurement  of 19 inches in NW Old Town Alexandria (a few pages back)

 

My own obs of 16.5 two miles west of DCA at 5 pm was partly affected by (1) being in the snowshadow of The Hill Of Doom when the snowbands were coming in from the east/SE and (2) having to settle for measuring what I could get to.  Once I start trying to dig out, this may change.

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NWS employee reports from North Potomoc / Darnestown indicate we hit the 3 Feet mark definately the single biggest storm ever for me. 

 

...MONTGOMERY COUNTY...
   2 NNW NORTH POTOMAC   36.5   600 PM  1/23  NWS EMPLOYEE
   1 NW NORTH POTOMAC    36.5   623 PM  1/23  NWS EMPLOYEE
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Updated totals

...DISTRICT OF COLUMBIA...

1 WSW NATIONAL ZOO 22.4 914 PM 1/23 TRAINED SPOTTER

1 E WASHINGTON 22.3 1200 AM 1/24 TRAINED SPOTTER

ADAMS MORGAN 21.0 1121 PM 1/23 NWS EMPLOYEE

ANACOSTIA 19.0 715 PM 1/23 TRAINED SPOTTER

MARYLAND

...ALLEGANY COUNTY...

1 NW RIDGELEY 32.0 700 PM 1/23 TRAINED SPOTTER

WESTERNPORT 28.0 700 PM 1/23 TRAINED SPOTTER

ECKHART MINES 27.0 630 PM 1/23 TRAINED SPOTTER

1 S ECKHART MINES 26.0 644 PM 1/23 AIRPORT

FROSTBURG 25.0 1130 PM 1/23 TRAINED SPOTTER

1 SSE CUMBERLAND 22.0 905 PM 1/23 CO-OP OBSERVER

...ANNE ARUNDEL COUNTY...

BWI AIRPORT 29.2 700 PM 1/23 AIRPORT

LINTHICUM HEIGHTS 23.0 1100 PM 1/23 TRAINED SPOTTER

1 E CROFTON 22.5 1134 PM 1/23 NWS EMPLOYEE

1 ENE CROFTON 19.0 915 PM 1/23 TRAINED SPOTTER

2 NW RIVA 17.0 920 PM 1/23 TRAINED SPOTTER

...BALTIMORE COUNTY...

2 E REISTERSTOWN 32.1 930 PM 1/23 TRAINED SPOTTER

2 NE JACKSONVILLE 30.0 1057 PM 1/23 TRAINED SPOTTER

1 W PARKTON 29.8 1130 PM 1/23 TRAINED SPOTTER

1 E GLYNDON 28.3 1030 PM 1/23 TRAINED SPOTTER

1 SE COCKEYSVILLE 28.0 855 PM 1/23 TRAINED SPOTTER

JACKSONVILLE 27.5 720 PM 1/23 TRAINED SPOTTER

2 NW LONG GREEN 27.0 830 PM 1/23 TRAINED SPOTTER

1 WSW GLYNDON 27.0 1205 AM 1/24 TRAINED SPOTTER

1 NNE PERRY HALL 26.0 1100 PM 1/23 TRAINED SPOTTER

2 NNW BROOKLANDVILLE 26.0 918 PM 1/23 TRAINED SPOTTER

REISTERSTOWN 26.0 1030 PM 1/23 STATE EMERG MGMT

1 ENE RANDALLSTOWN 25.5 800 PM 1/23 TRAINED SPOTTER

1 ENE HAMILTON 23.5 939 PM 1/23 TRAINED SPOTTER

2 NNW ESSEX 23.5 700 PM 1/23 TRAINED SPOTTER

1 ESE WOODLAWN 23.5 635 PM 1/23 TRAINED SPOTTER

...BALTIMORE CITY...

1 SW PARK HEIGHTS 26.5 830 PM 1/23 TRAINED SPOTTER

2 ESE ARLINGTON 25.0 805 PM 1/23 BROADCAST MEDIA

1 ESE CYLBURN 24.8 728 PM 1/23 TRAINED SPOTTER

HAMILTON 24.5 820 PM 1/23 PUBLIC

2 W CARROLL 22.4 752 PM 1/23 TRAINED SPOTTER

1 W MORRELL PARK 21.0 1030 PM 1/23 TRAINED SPOTTER

...CALVERT COUNTY...

2 NE DOWELL 19.0 1020 PM 1/23 TRAINED SPOTTER

2 N HUNTINGTOWN 16.3 1030 PM 1/23 NWS EMPLOYEE

2 SW HUNTINGTOWN 16.0 945 PM 1/23 TRAINED SPOTTER

NORTH BEACH 14.0 751 PM 1/23 TRAINED SPOTTER

...CHARLES COUNTY...

2 W WALDORF 23.5 902 PM 1/23 TRAINED SPOTTER

1 SW DENTSVILLE 15.5 1130 PM 1/23 TRAINED SPOTTER

1 ENE POMFRET 15.5 723 PM 1/23 TRAINED SPOTTER

LA PLATA 15.5 647 PM 1/23 TRAINED SPOTTER

2 ENE HUGHESVILLE 13.0 822 PM 1/23 TRAINED SPOTTER

...FREDERICK COUNTY...

1 E WALKERSVILLE 35.0 830 PM 1/23 TRAINED SPOTTER

NEW MARKET 35.0 1000 PM 1/23 TRAINED SPOTTER

POINT OF ROCKS 32.0 717 PM 1/23 PUBLIC

1 SE MYERSVILLE 32.0 1100 PM 1/23 PRIVATE COMPANY

BALLENGER CREEK 31.0 1030 PM 1/23 TRAINED SPOTTER

1 NNW BRADDOCK HEIGH 30.0 800 PM 1/23 TRAINED SPOTTER

2 N WOLFSVILLE 29.5 1055 PM 1/23 TRAINED SPOTTER

1 NNW BALLENGER CREE 29.5 1049 PM 1/23 COCORAHS

...HARFORD COUNTY...

2 E SCARBORO 33.5 915 PM 1/23 TRAINED SPOTTER

1 NNW BEL AIR 31.0 935 PM 1/23 PUBLIC

BELCAMP 24.0 854 PM 1/23 TRAINED SPOTTER

1 NNE BEL AIR 22.9 1206 AM 1/24 TRAINED SPOTTER

...HOWARD COUNTY...

2 SE GAITHER 30.5 900 PM 1/23 COCORAHS

1 NNW GLENELG 28.0 940 PM 1/23 TRAINED SPOTTER

1 WSW COLUMBIA 25.0 1005 PM 1/23 TRAINED SPOTTER

1 NNW COLUMBIA 24.0 840 PM 1/23 TRAINED SPOTTER

1 NE SAVAGE 24.0 808 PM 1/23 TRAINED SPOTTER

HIGHLAND 24.0 800 PM 1/23 NWS EMPLOYEE

2 W ELKRIDGE 22.0 755 PM 1/23 TRAINED SPOTTER

HANOVER 21.0 658 PM 1/23 TRAINED SPOTTER

1 WSW SAVAGE 20.5 700 PM 1/23 COCORAHS

...MONTGOMERY COUNTY...

2 SE CLARKSBURG 34.3 626 PM 1/23 TRAINED SPOTTER

1 SE OLNEY 31.5 1015 PM 1/23 COCORAHS

1 N GARRETT PARK 30.8 1015 PM 1/23 TRAINED SPOTTER

1 SE MONTGOMERY VILL 30.0 1011 PM 1/23 TRAINED SPOTTER

1 SE DAMASCUS 30.0 1100 PM 1/23 TRAINED SPOTTER

1 ESE NORBECK 29.8 1100 PM 1/23 TRAINED SPOTTER

3 SSW DAMASCUS 29.0 752 PM 1/23 CO-OP OBSERVER

1 ESE NORBECK 28.6 700 PM 1/23 COCORAHS

2 ESE GERMANTOWN 27.5 1028 PM 1/23 TRAINED SPOTTER

GAITHERSBURG 27.0 1020 PM 1/23 COUNTY EMRG MGMT

1 WSW GARRETT PARK 26.5 1200 AM 1/24 TRAINED SPOTTER

1 NNW CALVERTON 23.9 1030 PM 1/23 TRAINED SPOTTER

SOMERSET 22.0 915 PM 1/23 TRAINED SPOTTER

SPENCERVILLE 22.0 626 PM 1/23 TRAINED SPOTTER

1 N FOUR CORNERS 22.0 821 PM 1/23 TRAINED SPOTTER

1 ESE TAKOMA PARK 18.5 1145 PM 1/23 TRAINED SPOTTER

...PRINCE GEORGES COUNTY...

1 NW HYATTSVILLE 25.2 1032 PM 1/23 TRAINED SPOTTER

1 NNE CHELTENHAM 24.0 1045 PM 1/23 TRAINED SPOTTER

1 NNE CHELTENHAM 24.0 1130 PM 1/23 TRAINED SPOTTER

1 E UNIVERSITY PARK 22.5 700 PM 1/23 NWS EMPLOYEE

1 E UNIVERSITY PARK 22.3 1120 PM 1/23 NWS OFFICE

2 E BURTONSVILLE 21.8 956 PM 1/23 TRAINED SPOTTER

1 NNE GREENBELT 20.5 948 PM 1/23 NWS EMPLOYEE

1 SW COLLEGE PARK 19.0 800 PM 1/23 TRAINED SPOTTER

...ST. MARYS COUNTY...

RIDGE 10.7 1031 PM 1/23 TRAINED SPOTTER

...WASHINGTON COUNTY...

CASCADE 37.5 905 PM 1/23 PUBLIC

1 NE MAUGANSVILLE 36.0 730 PM 1/23 AIRPORT

1 SSE LONG MEADOW 32.5 738 PM 1/23 TRAINED SPOTTER

1 WSW CAVETOWN 31.3 1000 PM 1/23 TRAINED SPOTTER

3 SW FAIRPLAY 26.0 705 PM 1/23 TRAINED SPOTTER

VIRGINIA

...ALBEMARLE COUNTY...

3 WNW CARRSBROOK 30.0 800 PM 1/23 TRAINED SPOTTER

...ARLINGTON COUNTY...

1 NNE BAILEYS CROSSR 21.5 930 PM 1/23 TRAINED SPOTTER

1 NNE BAILEYS CROSSR 21.0 720 PM 1/23 PUBLIC

1 WNW REAGAN NATIONA 19.4 927 PM 1/23 TRAINED SPOTTER

1 WSW CHERRYDALE 18.0 1020 PM 1/23 NWS EMPLOYEE

REAGAN NATIONAL AIRP 17.8 652 PM 1/23 AIRPORT

...AUGUSTA COUNTY...

FISHERSVILLE 18.3 859 PM 1/23 TRAINED SPOTTER

...CITY OF ALEXANDRIA...

2 ESE LINCOLNIA 21.5 930 PM 1/23 OTHER FEDERAL

1 WNW NATIONAL HARBO 17.0 755 PM 1/23 TRAINED SPOTTER

...CITY OF FREDERICKSBURG...

1 E FREDERICKSBURG 14.3 1105 PM 1/23 TRAINED SPOTTER

...CITY OF HARRISONBURG...

HARRISONBURG 25.0 709 PM 1/23 BROADCAST MEDIA

...CITY OF MANASSAS...

MANASSAS 29.5 910 PM 1/23 TRAINED SPOTTER

1 SW MANASSAS PARK 28.7 1206 AM 1/24 TRAINED SPOTTER

...CLARKE COUNTY...

1 NNW BERRYVILLE 35.0 750 PM 1/23 TRAINED SPOTTER

BOYCE 28.5 1030 PM 1/23 TRAINED SPOTTER

...FAIRFAX COUNTY...

CENTREVILLE 30.8 1009 PM 1/23 TRAINED SPOTTER

2 N CHANTILLY 30.0 900 PM 1/23 COCORAHS

1 NNE HERNDON 28.4 1100 PM 1/23 NWS EMPLOYEE

2 N RESTON 28.0 815 PM 1/23 TRAINED SPOTTER

2 N RESTON 28.0 815 PM 1/23 NWS EMPLOYEE

1 W CENTREVILLE 28.0 1030 PM 1/23 COCORAHS

2 SSE HERNDON 26.5 736 PM 1/23 TRAINED SPOTTER

1 SSW FRANCONIA 25.0 1100 PM 1/23 TRAINED SPOTTER

1 NNE FAIRFAX STATIO 24.5 830 PM 1/23 TRAINED SPOTTER

1 WNW FALLS CHURCH 24.2 1130 PM 1/23 TRAINED SPOTTER

MCLEAN 24.0 700 PM 1/23 BROADCAST MEDIA

VIENNA 24.0 700 PM 1/23 CO-OP OBSERVER

SPRINGFIELD 23.5 736 PM 1/23 NWS EMPLOYEE

1 NW NEWINGTON 23.5 1044 PM 1/23 TRAINED SPOTTER

1 SE FAIRFAX STATION 23.3 640 PM 1/23 TRAINED SPOTTER

1 W LAKE BARCROFT 23.0 1017 PM 1/23 TRAINED SPOTTER

2 S LINCOLNIA 22.0 1030 PM 1/23 TRAINED SPOTTER

RAVENSWORTH 21.0 915 PM 1/23 NWS EMPLOYEE

JEFFERSON MANOR 20.8 630 PM 1/23 AMATEUR RADIO

1 NE LORTON 20.5 630 PM 1/23 COCORAHS

...FAUQUIER COUNTY...

1 NW OPAL 30.0 1013 PM 1/23 TRAINED SPOTTER

1 SSE MORRISVILLE 19.0 1208 AM 1/24 TRAINED SPOTTER

...FREDERICK COUNTY...

2 E STEPHENS CITY 35.0 700 PM 1/23 TRAINED SPOTTER

...KING GEORGE COUNTY...

JERSEY 14.0 1130 PM 1/23 TRAINED SPOTTER

...LOUDOUN COUNTY...

3 SSW DULLES INTERNA 37.3 1015 PM 1/23 TRAINED SPOTTER

1 WNW ROUND HILL 36.3 1030 PM 1/23 TRAINED SPOTTER

1 NNE ASHBURN 36.0 1128 PM 1/23 NWS EMPLOYEE

BLUEMONT 35.0 732 PM 1/23 NWS EMPLOYEE

1 SW LEESBURG 34.0 1017 PM 1/23 TRAINED SPOTTER

1 SW PURCELLVILLE 33.0 810 PM 1/23 TRAINED SPOTTER

2 NW LEESBURG 28.5 914 PM 1/23 TRAINED SPOTTER

1 NE LEESBURG 28.4 800 PM 1/23 TRAINED SPOTTER

DULLES INTERNATIONAL 28.3 700 PM 1/23 AIRPORT

3 S BLUEMONT 25.0 1030 PM 1/23 TRAINED SPOTTER

...ORANGE COUNTY...

2 WSW LOCUST GROVE 15.0 703 PM 1/23 TRAINED SPOTTER

...PAGE COUNTY...

2 WSW PANORAMA 24.0 1056 PM 1/23 TRAINED SPOTTER

...PRINCE WILLIAM COUNTY...

3 SW BULL RUN 32.1 1050 PM 1/23 TRAINED SPOTTER

2 SW WOOLSEY 28.0 735 PM 1/23 TRAINED SPOTTER

1 W DALE CITY 26.3 1130 PM 1/23 TRAINED SPOTTER

2 ESE INDEPENDENT HI 23.0 1100 PM 1/23 TRAINED SPOTTER

1 S MANASSAS 21.0 716 PM 1/23 TRAINED SPOTTER

1 ENE DUMFRIES 18.5 916 PM 1/23 TRAINED SPOTTER

...SHENANDOAH COUNTY...

STRASBURG 22.8 1016 PM 1/23 TRAINED SPOTTER

...SPOTSYLVANIA COUNTY...

1 S DUNAVANT 21.5 800 PM 1/23 TRAINED SPOTTER

4 ESE CHANCELLORSVIL 21.2 800 PM 1/23 PUBLIC

2 S DUNAVANT 17.5 722 PM 1/23 TRAINED SPOTTER

3 SSW FREDERICKSBURG 17.0 730 PM 1/23 TRAINED SPOTTER

...STAFFORD COUNTY...

1 WSW SEALSTON 19.0 1000 PM 1/23 COCORAHS

1 ESE BROOKE 19.0 1045 PM 1/23 TRAINED SPOTTER

1 S LEELAND 14.5 815 PM 1/23 TRAINED SPOTTER

...WARREN COUNTY...

1 WNW RIVERTON 28.0 821 PM 1/23 CO-OP OBSERVER

1 WSW KARO 28.0 800 PM 1/23 TRAINED SPOTTER

WEST VIRGINIA

...BERKELEY COUNTY...

1 SW JONES SPRINGS 39.0 630 PM 1/23 TRAINED SPOTTER

4 NNE WINEBRENNERS C 36.4 729 PM 1/23 TRAINED SPOTTER

2 E MARTINSBURG 36.1 700 PM 1/23 NWS EMPLOYEE

2 NW FALLING WATERS 35.5 758 PM 1/23 TRAINED SPOTTER

...HARDY COUNTY...

1 N MOOREFIELD 25.0 800 PM 1/23 TRAINED SPOTTER

...JEFFERSON COUNTY...

1 NW SHEPHERDSTOWN 40.5 950 PM 1/23 NWS EMPLOYEE

SHENANDOAH JUNCTION 35.5 930 PM 1/23 NWS EMPLOYEE

CHARLES TOWN 32.5 745 PM 1/23 TRAINED SPOTTER

...MORGAN COUNTY...

1 W SMITH CROSSROADS 33.2 1101 PM 1/23 TRAINED SPOTTER

...PENDLETON COUNTY...

2 WSW DEER RUN 25.0 656 PM 1/23 TRAINED SPOTTER

 

 

 

What's interesting is NW Hyattsville borders SW College Park. NW Hyattsville recorded 25" and SW College Park recorded 19". 

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Looks like "2 W Elkridge" is in my neighborhood and he had 22".  He might be the same guy who runs the personal weather station in my neighborhood which had storm total liquid of 2.38".  That would be 9.2:1 ratio for the entire storm if you believe all the data.  22" seems a bit low, but I'll go with it. 

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Most snow I've ever seen. I lived is Southwest VA near Blacksburg for a while and the most I saw there was around 16". This storm blew that away. I tried my best to measure the old fashioned way and could have sworn I had over 30" but the official measurements in my area are around 28". I can't complain, it's still a whole bunch of snow!

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Interesting.  Spotter report for E Stephens City was 35.0.  That's from a trained spotter.  I wonder if he used a board and wiped every 6, or just measured on the ground.  I measure on the ground, because - really - what is actually on the ground is the only thing I care about.  Don't know if compaction is significant enough to go from 35 inches to my measurements of 27 - 28.  Could just be the typical dry hole in my area at work too.

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Interesting.  Spotter report for E Stephens City was 35.0.  That's from a trained spotter.  I wonder if he used a board and wiped every 6, or just measured on the ground.  I measure on the ground, because - really - what is actually on the ground is the only thing I care about.  Don't know if compaction is significant enough to go from 35 inches to my measurements of 27 - 28.  Could just be the typical dry hole in my area at work too.

Compaction would occur, but I don't think 7 to 8 inches would happen. Maybe 2 or 3 depending on how dry/wet the snow was.

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Compaction would occur, but I don't think 7 to 8 inches would happen. Maybe 2 or 3 depending on how dry/wet the snow was.

It could actually.  The ABE (Lehigh Valley) observer at one point yesterday recorded 21.7" of fresh snow with 17" on the ground!  The snow in PA likely had higher ratios than down here, so 6-8" compaction isn't out of the question for 35" of snow.  imho

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I didn't want to say this yesterday, but now that's it over, it's fascinating how similar this storm was to 1/96, right down to the mid-storm light-mixy-lull. Though, in 1/96, the light precip period happened over a greater area than this storm.

I'm actually kind of glad the weather board wasn't around back then for one reason: I think I would have enjoyed 1/96 less because I would have been obsessing on here from like 2 pm to 10 pm that day.

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