Short-term Precipitation Monitor Help Page

MesoWest has been designed for use by National Weather Service meteorologists and other professionals for protection of life and property. Comments/suggestions for improvement may be sent to

The MesoWest Short-term Precipitation Monitor provides access to liquid precipitation totals in fixed time intervals for all available weather stations within the selected region. The precipitation totals are calculated from station data over the last 24 hours. Longer records of precipitation are available through the Long-term Precipitation Summary.

The user can change multiple settings to display data, these settings are...

Location: The user can choose from a number of different regions to display data. The regions could be one of the following...
GCA: National Interagency Coordination Center (NICC) Geographic Coordinating Area
CWA: National Weather Service County Warning Area
FWZ: National Weather Service Fire Weather Zone

Network: The user can choose between the following for network combinations...
NWS: Displays stations that are only a part of the NWS/FAA network.
RAWS: Displays stations that are only a part of the RAWS network.
NWS and RAWS: Displays stations that are a part of either the NWS/FAA or RAWS networks.
SNOTEL: Displays stations that are only a part of the SNOTEL network.
All Networks: Displays all of the stations, regardless of the network.

Date and Time: The user can change the date and time (UTC) if they wish to view archived totals instead of current totals. To view the most recent totals, select "Current" from the "Day" input, which will automatically load the latest information.

The data is then output into tables in the area below the "Settings" section. There is an option to sort each table by station name or by station elevation.

Station Distribution: The stations are then divided into tables based on the "Location" chosen...
GCA: Stations grouped by GCA Predictive Service Areas (PSAs).
CWA: Stations grouped by Forecast Zone.
FWZ: Stations grouped by Fire Weather Forecast Zone.
State/Province: Stations grouped by county.

Table Output: The following information is provided within each table. Each row contains a different station.
Station ID and Name: longer station names may be truncated.
Mesonet and Elevation: which network the station belongs to and elevation in feet.
Time: the time (UTC and local) of the most recent observation.
Precipitation Totals: calculated totals from the most recent observation listed for the following periods...
1 Hour
3 Hours
6 Hours
12 Hours
24 Hours
Since Midnight Local Time
Since 13:00 Local Time
Precipitation Statistics: for tables with recorded precipitation and multiple stations, additional statistics are shown for each period...
Maximum: the maximum amount recorded for a table of stations.
Zone Average: the average amount calculated for all of the stations in a table.
Minimum: the minimum amount recorded for a table of stations.

*Important Notes:

1) Quality control of precipitation calculations is limited to gross checks only.
2) Occasionally, precipitation totals may be incorrect for NWS/FAA stations, due to irregular reporting intervals.

The display will auto-refresh with the most current information every 5 minutes, if current data are displayed.