Rain Gauge: GPM Precipitation Science Research Facility
Wallops PRF High-Density Gauge Network
A network of 25 indvidual gauge platforms (two gauge per platform) that were deployed
in a 5 km x 5 km area near Nassawadox, VA area from April 2012 to July 2013. Now
that the NPOL radar
has been deployed in the Newark, MD area, the network has been moved to
the Pocomoke area.
Self-Reporting Gauge Platforms
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The Wallops GPM PRF is currently supporting two gauge and disdrometer networks.
A high density gauge grid is located in an around Pocomoke City, MD is aimed
towards validating space-based estimates on the scale of the nominal GPM DPR
footprint size of about 5 km. The second, larger grid, also includes the Pocomoke
network, but it's scale is approximately 0.5 degrees (lat & lon). This network
will serve to better validate both DPR and GMI observations and is well sampled
by NASA's NPOL radar, which is
located in Newark, MD. The 0.5 degree scale is roughly bounded by Chincoteague, VA
to the southeast; Crisfield, MD to the southwest; Salisbury, MD to the north; and,
Newark, MD to the northeast.
Latest KML File
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Current Report Date: 07/06/2022
Gauge Location File: Gauge_LUTs/gauge_lookup_WFF_20210910.txt
Report generated 07/06/2022 @ 05:00:06 Local (07/06/2022 @ 09:00:06 UTC)
Site |
Name |
PackNum |
Wetness |
Voltage |
Solar |
RSSI |
Tips A/B |
Accums [mm] |
Accums [in] |
Bias [%] |
NASA0001 |
Lowes |
28/96 |
3.3/3.3 |
12.7/12.8 |
0.6/9.4 |
-87.6/-87.5 |
0/0 |
0.00/0.00 |
0.00/0.00 |
0.00 |
NASA0002 |
Poultry_Supply |
21/96 |
3.3/3.3 |
12.7/12.8 |
0.8/12.8 |
-87.6/-87.4 |
0/0 |
0.00/0.00 |
0.00/0.00 |
0.00 |
NASA0003 |
Triangle |
10/96 |
3.3/3.3 |
12.7/12.8 |
0.7/9.1 |
-87.6/-87.3 |
0/0 |
0.00/0.00 |
0.00/0.00 |
0.00 |
NASA0004 |
Pocomoke_MS |
8/96 |
3.3/3.3 |
12.8/12.9 |
1.0/12.7 |
-87.4/-87.1 |
0/0 |
0.00/0.00 |
0.00/0.00 |
0.00 |
NASA0009 |
Haywards_Lott |
25/96 |
3.3/3.3 |
12.6/12.6 |
0.5/8.5 |
-87.8/-87.7 |
0/0 |
0.00/0.00 |
0.00/0.00 |
0.00 |
NASA0012 |
William_St_Well |
11/96 |
3.3/3.3 |
12.8/12.9 |
0.7/9.6 |
-87.4/-87.3 |
0/0 |
0.00/0.00 |
0.00/0.00 |
0.00 |
NASA0013 |
Pocomoke_HS |
1/96 |
3.3/3.3 |
12.7/12.8 |
0.7/9.4 |
-87.6/-87.4 |
0/0 |
0.00/0.00 |
0.00/0.00 |
0.00 |
NASA0016 |
Crip_Taylor |
26/96 |
3.3/3.3 |
12.7/12.8 |
0.7/10.4 |
-87.6/-87.4 |
0/0 |
0.00/0.00 |
0.00/0.00 |
0.00 |
NASA0017 |
WFF_Pad |
26/96 |
3.3/3.3 |
12.7/12.8 |
0.8/12.0 |
-87.6/-87.4 |
0/0 |
0.00/0.00 |
0.00/0.00 |
0.00 |
NASA0019 |
Lankford_Farm |
14/96 |
3.3/3.3 |
12.7/12.8 |
0.7/11.9 |
-87.6/-87.4 |
0/0 |
0.00/0.00 |
0.00/0.00 |
0.00 |
NASA0020 |
Somerset_Rd |
31/96 |
3.3/3.3 |
12.7/12.9 |
0.8/12.5 |
-87.6/-87.3 |
0/0 |
0.00/0.00 |
0.00/0.00 |
0.00 |
NASA0021 |
East |
3/96 |
3.3/3.3 |
12.7/12.8 |
0.8/12.9 |
-87.6/-87.3 |
0/0 |
0.00/0.00 |
0.00/0.00 |
0.00 |
NASA0022 |
Plywood |
29/96 |
3.3/3.3 |
12.8/12.9 |
0.9/13.2 |
-87.4/-87.2 |
0/0 |
0.00/0.00 |
0.00/0.00 |
0.00 |
NASA0023 |
Kelder_Farm |
11/96 |
3.3/3.3 |
12.7/12.8 |
0.8/12.0 |
-87.6/-87.4 |
0/0 |
0.00/0.00 |
0.00/0.00 |
0.00 |
NASA0025 |
Stockton |
31/96 |
3.3/3.3 |
12.8/12.9 |
0.6/8.9 |
-87.4/-87.3 |
58/57 |
14.73/14.48 |
0.58/0.57 |
1.72 |
NASA0027 |
Stille |
18/96 |
5.0/5.0 |
12.8/12.9 |
0.6/10.6 |
-87.4/-87.3 |
62/61 |
15.75/15.49 |
0.62/0.61 |
1.61 |
NASA0029 |
Miller |
21/96 |
5.0/5.0 |
12.8/12.9 |
0.7/11.7 |
-87.4/-87.2 |
159/138 |
40.39/35.05 |
1.59/1.38 |
13.21 |
NASA0031 |
American_Legion |
18/96 |
5.0/5.0 |
12.7/12.7 |
0.5/8.9 |
-87.6/-87.5 |
0/0 |
0.00/0.00 |
0.00/0.00 |
0.00 |
NASA0032 |
Koehler |
2/96 |
5.0/5.0 |
12.9/13.0 |
0.5/5.9 |
-87.2/-87.0 |
32/31 |
8.13/7.87 |
0.32/0.31 |
3.12 |
NASA0038 |
Snow_Hill_Auto |
3/96 |
5.0/5.0 |
12.7/12.8 |
0.5/7.4 |
-87.6/-87.4 |
103/104 |
26.16/26.42 |
1.03/1.04 |
-0.97 |
NASA0039 |
Doc_Johnson |
34/96 |
5.0/5.0 |
12.6/12.7 |
0.7/11.1 |
-87.8/-87.5 |
0/0 |
0.00/0.00 |
0.00/0.00 |
0.00 |
NASA0041 |
LeVecque |
16/96 |
5.0/5.0 |
12.7/12.8 |
0.8/13.2 |
-87.6/-87.4 |
0/0 |
0.00/0.00 |
0.00/0.00 |
0.00 |
NASA0044 |
Sysco |
31/96 |
5.0/5.0 |
12.7/12.8 |
19.0/19.8 |
-87.6/-87.3 |
0/3 |
nan/0.76 |
nan/0.03 |
0.00 |
NASA0045 |
Silva_Rd |
30/96 |
5.0/5.0 |
12.8/12.9 |
0.6/10.0 |
-87.4/-87.2 |
0/0 |
0.00/0.00 |
0.00/0.00 |
0.00 |
NASA0101 |
Gerlach |
32/96 |
5.0/5.0 |
12.7/12.7 |
0.9/12.1 |
-87.6/-87.5 |
0/0 |
0.00/0.00 |
0.00/0.00 |
0.00 |
Current UTC Date: Wed, 06 Jul 2022 09:14:19 +0000
Daily Summaries
All times are in Universal Time Coordinate (UTC) and each report represents the 24
period between 0000-2359 UTC. See the line just above for the current UTC time.
But, generally, for the Eastern Shore, during fall and winter this means the
period is between 8 PM the previous night and 8 PM for the current night. During
the sprint and summer, the period is between 7 PM the previous night and 7 PM for
the current night.
Parameter |
Description |
Packets |
These gauges report every 15 minutes (4 times per hour), so the maximum number of
packets received in each 24 hour period is 24*4=96.
|
Wetness |
This parameter indicates the humidity inside the "black box" which houses the
electronics. Any number greater than 3.3 could indicate moisture in the box
and the gauge should be visited.
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Voltage |
The voltage parameter indicates the voltage of the battery housed inside the
container. Red values indicate that the voltage is low and may trigger a
maintenance visit.
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Solar |
The solar parameter provides the current period statistics on solar power
being processed by the solar panel.
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RSSI |
The RSSI parameter represents the cellular modem signal strength.
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Tips (A/B) |
There are two gauges on each platform. When facing the front the gauge (the side
with the lock on it), gauge A is on the left and gauge B is on the right. Each
tip represents 0.254 mm or 0.01" or rain.
|
Accum (A/B) [mm] |
This parameter is the accumulated parameter in the current 24-hour period,
expressed in mm. Note that 1 inch = 25.4 mm.
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Accum (A/B) [inches] |
This parameter is the accumulated parameter in the current 24-hour period,
expressed in inches.
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Bias [%] |
This parameter represents the bias in accumulated rainfall between the
two gauges. It is expressed as a percentage. Biases of more than about
10% indicate a problem with one or more of the gauges.
Bias = [ (#Tips Gauge A - #Tips Gauge B) / #Tips Gauge A ]
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Known Issues
WARNING: Due to server/security issues, there is no reliable gauge data
from 11/17/2017 - 01/26/2018
Follow the link below to determine periods where blockage was possible/probable
or days when maintenance of the platforms might have caused spurious tips, even
though no rain occurred.
Summary Plots
You can view the latest summary plots for the 25 gauges in 5x5 panels by clicking the
links below. The tips plot uses the raw tip data to calculate the total accumulation
for each day. The rain rate plot converts the raw tip data to 1-min average rain rates
using a cubic spline technique by Wang and Wolff (2008).
Monthly Gauge Inventory Plots
View the monthly inventory or data availability for all gauges by NASA00id.
Monthly Summaries
Gauge Quick Look Products
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