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Snow Totals For: April 27, 2017

DelDOT
Maintenance
Area
Location
Snow Storm Total
(in)
12Talley0.0
12Greenville0.0
12Claymont0.0
11Hockessin0.0
11Prices Corner0.0
11White Clay Creek0.0
10New Castle0.0
10Glasgow0.0
10Newark0.0
9Blackbird0.0
9Port Penn0.0
8West Dover0.0
8Smyrna0.0
7Woodside0.0
7Dover0.0
6Frederica0.0
6Harrington0.0
5Selbyville0.0
5Bethany Beach0.0
4Stockley0.0
4Nassau0.0
3Ellendale0.0
3Lewes0.0
2Seaford0.0
2Bridgeville0.0
1Laurel0.0

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 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)

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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