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Snow Totals For: January 24, 2020

DelDOT
Maintenance
Area
Location
Last Update
(minutes ago)
Snow Storm Total
(in)
12
Talley
30.0
12
Claymont
30.0
12
Greenville
30.0
11
Prices Corner
30.0
11
White Clay Creek
30.0
11
Hockessin
30.0
10
Newark
30.0
10
Glasgow
30.0
10
New Castle
30.0
9
Blackbird
30.0
9
Port Penn
1480.0
8
West Dover
180.0
8
Smyrna
80.0
7
Woodside
30.0
7
Dover
930.0
6
Frederica
30.0
6
Harrington
30.0
5
Dagsboro
30.0
5
Bethany Beach
30.0
4
Stockley
30.0
4
Nassau
30.0
3
Ellendale
30.0
3
Lewes
180.0
2
Seaford
30.0
2
Bridgeville
30.0
1
Laurel
30.0

Notes:

  • Locations in bold represent highest storm total for each maintenance area.
  • Click on a maintenance area within the map to highlight the corresponding stations inside the table.
  • Hover over a station within the map to display the name and maintenance area.
  • Stations update every 5 minutes
  • Trace (Tr) represents snow was detected by the sensor, but it was less than the accuracy of the sensor, which is approximately 0.4 inches (1.0 centimeter)

Event Archive:

2009 (1)

2010 (4)

2011 (11)

2012 (4)

2013 (15)

2014 (15)

2015 (15)

2016 (9)

2017 (11)

2018 (10)

2019 (10)

About the DEOS Snow Monitoring System

Real-time snow depth measurements are provided by the Delaware Environmental Observing System (DEOS) to the State of Delaware through funding from the Delaware Department of Transportation (DelDOT) for the Snow Removal Reimbursement Program. Snow measurements are now being taken over official National Weather Service snowboards. The snow monitoring stations directly measure snow depth, which is processed every five minutes to produce snow accumulation data.


DEOS Snow Monitoring Station

Snow depth is measured using a sonic ranging depth sensor, which is shown in the image to the above. This sensor sends a sonic (sound) signal from its base to the surface below. This signal is then reflected from the surface to the sensor where an air temperature-calibrated distance-to-surface measurement is calculated. This distance is then subtracted from the initial height of the sensor above the ground to yield a snow depth measurement. The accuracy of this sensor is +/- 1 cm (approximately 0.3937 in.). Each snow depth measurement undergoes a quality control procedure that checks for instrumentation error and data integrity according to the manufacturer's recommendations.

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