The March 12-14, 2017 snow storm hit with two periods with a short break of about one hour around midnight Monday March 13 to Tuesday March 14. The first period was snow associated with a cold front, and the second period was associated with lake effect snow.
Cold Front Snow
A total of 1 inch of snow fell in Arlington Heights from about 9:00 PM Sunday March 12, 2017 until 11:00 PM Monday March 13, 2017. The Cold Front Snow period lasted about 26:00 (hours:minutes). No snow cover was on the ground before the Cold Front Snow period.
The Cold Front Snow caused partial accumulation on paved areas. Some warmer pavement had zero accumulation.
The snowfall was much less than the 4-10 inches that was forecast for the area. A second Lake Effect Snow period resulted in much greater snowfall.
Lake Effect Snow
A total of 7.5 inches of Lake Effect Snow fell from midnight Monday/Tuesday until about 1:00 p.m. Tuesday — a period of about 13 hours.
Combined Snow Periods
The storm total for Arlington Heights was 8.5 inches as recorded by Arlingtoncardinal.com (not official). The snow cover was 8.5 inches in the shade at 11:00 a.m. Tuesday (3/14/2017) and at the end of storm time at 1:00 p.m. Areas in the sun were already showing signs of shrinking snow cover by 10:30 a.m. Rapid melting occurred on sunlit paved areas with some areas showing less than two inches of snow cover by noon. Some sunlit paved areas showed zero snow cover between 3:00 p.m. and 6:00 p.m.
All grassy areas and paved/shaded areas had a snow cover of 5-6 inches at 6:00 p.m. Tuesday — a shrinkage of 2-3 inches from the storm total.
The snow quality was dry and light — not good packing snow, but easy for shoveling. The air temperature and sunlight caused snow to convert to good packing snow with higher moisture per volume. Tuesday’s high was 27°F at O’Hare.
The first round of snow caused partial accumulation on paved areas. The second round caused accumulation with total coverage on paved and grassy areas.
According to the National Weather Service Chicago, the 24 hour snowfall for the official Chicago observation was 4.9″ observed at Chicago O’Hare International Airport at 7:00 a.m. March 14th, 2017. The storm total was recorded at 7.5″ as of 1:00 p.m. Tuesday March 14th, 2017.
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MOBILE TILT 90° FOR TABLE …
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1158 AM CDT TUE MAR 14 2017
...2-DAY SNOWFALL ROUND-UP...
THE FOLLOWING ARE SNOW AMOUNTS FOR THE PREVIOUS 2 DAYS
AS MEASURED IN THE MORNING BY NWS COOPERATIVE OBSERVERS
AND COCORAHS OBSERVERS. OBSERVATIONS ARE USUALLY
TAKEN AT 7 AM.
2-DAY SNOW TOTALS FOR TUESDAY (03/14/17)
AS OF 11:58 AM CDT
ILLINOIS 2-DAY SNOW FALL
LOCATION (COUNTY): AMT(IN) REPORTS
WAUKEGAN 2N (LAKE)...........................14.3
BUFFALO GROVE 2N (LAKE)......................13.0
LINCOLNSHIRE 1N (LAKE).......................13.0
MUNDELEIN 2WNW (LAKE)........................12.4
GURNEE 2W (LAKE).............................12.0
MUNDELEIN (LAKE)..............................9.6
RIVERWOODS (LAKE).............................9.5
LAKE FOREST 2NNE (LAKE).......................9.5
BOTANIC GARDENS (COOK)........................8.6
LINCOLNWOOD 2E (COOK).........................8.3
PARK RIDGE (COOK).............................8.3
HIGHWOOD 1S (LAKE)............................8.2
ROGERS PARK 2SW (COOK)........................8.2
LAKE ZURICH (LAKE)............................8.1
ELK GROVE VILLAGE 1ESE (COOK).................8.1
MOUNT PROSPECT 3NE (COOK).....................8.0
OAK PARK 1NNE (COOK)..........................7.6
DOWNERS GROVE 0.4NNE (DU PAGE)................7.4
SCHAUMBURG 2E (COOK)..........................7.3
ELK GROVE VILLAGE 2WSW (COOK).................7.2
OHARE (COOK)..................................7.1
ROSELLE 1ESE (DU PAGE)........................7.0
ELMHURST 1ESE (DU PAGE).......................6.9
PARK RIDGE 1WNW (COOK)........................6.8
LANSING (COOK)................................6.3
HOMER GLEN 1ENE (WILL)........................6.2
MIDWAY COOP (COOK)............................6.0
OAK LAWN (COOK)...............................6.0
ELMHURST 2SE (DU PAGE)........................5.9
WILLOW SPRINGS (COOK).........................5.8
HARVARD (MCHENRY).............................5.5
LA GRANGE PARK 1SSW (COOK)....................5.4
WONDER LAKE 1WNW (MCHENRY)....................5.3
BULL VALLEY 2WNW (MCHENRY)....................5.3
HEBRON (MCHENRY)..............................5.3
LISLE MORTON ARB (DU PAGE)....................5.2
MOKENA 1W (WILL)..............................5.1
ALSIP (COOK)..................................5.1
MACHESNEY PARK 3ENE (WINNEBAGO)...............5.0
CHICAGO RIDGE (COOK)..........................5.0
WORTH (COOK)..................................4.8
LISLE 1SE (DU PAGE)...........................4.6
ROCKFORD 2ENE (WINNEBAGO).....................4.5
NEW LENOX 3E (WILL)...........................4.5
STERLING 4NE (LEE)............................4.5
BRIDGEVIEW 1NNW (COOK)........................4.5
NAPERVILLE 1NW (DU PAGE)......................4.4
WESTMONT (DU PAGE)............................4.3
ROCKFORD 1NW (WINNEBAGO)......................4.2
BARRINGTON (LAKE).............................4.2
ROMEOVILLE (WILL).............................4.1
ST. CHARLES (KANE)............................4.1
BURR RIDGE 2SW (DU PAGE)......................4.1
ROSCOE 2SE (WINNEBAGO)........................4.0
MCHENRY (MCHENRY).............................4.0
MANHATTAN (WILL)..............................4.0
ROSCOE 2ESE (WINNEBAGO).......................4.0
NEW LENOX 4SE (WILL)..........................4.0
MANHATTAN 5ENE (WILL).........................4.0
DIXON 3NNW (LEE)..............................4.0
HOMEWOOD (COOK)...............................4.0
AMBOY (LEE)...................................4.0
ROCKFORD (WINNEBAGO)..........................3.9
GENEVA 4WSW (KANE)............................3.9
WOODSTOCK 5NW (MCHENRY).......................3.8
WOODSTOCK 4SW (MCHENRY).......................3.8
OTTAWA (LA SALLE).............................3.7
LA SALLE (LA SALLE)...........................3.7
ASHTON (LEE)..................................3.7
CHICAGO 6ESE (COOK)...........................3.7
CAPRON (BOONE)................................3.7
ELGIN 2W (KANE)...............................3.6
LOCKPORT 1SE (WILL)...........................3.5
NEW LENOX 2SE (WILL)..........................3.5
BYRON 3N (OGLE)...............................3.5
STREATOR 1WSW (LA SALLE)......................3.5
OTTAWA 2N (LA SALLE)..........................3.5
DIXON 2SW (LEE)...............................3.5
BELVIDERE (BOONE).............................3.5
SHABBONA (DE KALB)............................3.3
GENEVA 1SSW (KANE)............................3.1
PONTIAC (LIVINGSTON)..........................3.0
JOLIET LOCK/DAM (WILL)........................3.0
MANHATTAN 1ESE (WILL).........................3.0
CHATSWORTH (LIVINGSTON).......................3.0
OTTAWA 1NW (LA SALLE).........................3.0
COUNTRYSIDE 1ENE (COOK).......................3.0
CHATSWORTH (LIVINGSTON).......................3.0
BATAVIA (KANE)................................2.9
MONEE (WILL)..................................2.9
BATAVIA 1WNW (KANE)...........................2.8
BATAVIA 2WNW (KANE)...........................2.8
JOLIET 2N (WILL)..............................2.7
SUGAR GROVE 1NE (KANE)........................2.7
PLAINFIELD 5SW (KENDALL)......................2.7
MANHATTAN 2SE (WILL)..........................2.5
SHERIDAN 3SSE (LA SALLE)......................2.5
OSWEGO 5SSE (KENDALL).........................2.5
AURORA 4SE (DU PAGE)..........................2.5
OAK PARK 2S (COOK)............................2.5
HOFFMAN ESTATES 5W (COOK).....................2.5
GENOA (DE KALB)...............................2.5
PAW PAW (LEE).................................2.4
BATAVIA 1WSW (KANE)...........................2.4
PLAINFIELD 2SSE (WILL)........................2.3
CARBON HILL 3.1N (GRUNDY).....................2.3
COAL CITY 4NNW (GRUNDY).......................2.3
YORKVILLE 2SE (KENDALL).......................2.2
ROCHELLE (OGLE)...............................2.2
CRETE 3E (WILL)...............................2.2
DE KALB (DE KALB).............................2.2
MONTGOMERY 1SSE (KENDALL).....................2.1
EARLVILLE 3S (LA SALLE).......................2.1
ELGIN (KANE)..................................2.1
STEWARD (LEE).................................2.0
MENDOTA (LA SALLE)............................2.0
MORRIS 6ESE (GRUNDY)..........................2.0
FAIRBURY (LIVINGSTON).........................2.0
STREATOR 4ENE (LA SALLE)......................1.9
BOURBONNAIS (KANKAKEE)........................1.9
PLAINFIELD (WILL).............................1.8
NAPERVILLE 4SSW (WILL)........................1.8
DE KALB (DE KALB).............................1.8
MINOOKA (GRUNDY)..............................1.7
ST ANNE (KANKAKEE)............................1.5
PARK FOREST (COOK)............................1.5
ST. CHARLES 6NW (KANE)........................1.4
PEOTONE (WILL)................................1.2
MARSEILLES (LA SALLE).........................1.2
PEOTONE (WILL)................................1.2
CORTLAND (DE KALB)............................1.1
MAZON 0.5ENE (GRUNDY).........................1.0
DWIGHT (LIVINGSTON)...........................1.0
KANKAKEE (KANKAKEE)...........................0.9
BONFIELD 4WSW (KANKAKEE)......................0.6