Daily and Interactive Degree-Day Maps of Montana

Updated daily

These maps are calculated using the GIS GRASS 5.0, and are based on 1) near-real time temperature data from numerous AgriMet , HydroMet, National Weather Service , and RAWS weather stations, 2) historical average temperature data from numerous stations, 3) PRISM monthly max and min temperature maps, and 4) inverse-distance squared interpolations of differences between PRISM map-based and real-time degree-day calculations.  See More info. on methodology for creating DD maps. Also try out our new Degree-day Mapping Calculator for more control over calculation and mapping options.

(NOTE: you may need to use your browser's RELOAD or REFRESH button for latest images)

Army and Pale Western Cutworm Monitoring in MT, ID and WY

Western Region IPM Cutworm Survey and Risk Warning
see MSU's cutworm.org for more information about the program

Daily updated maps - click above maps for large risk warning maps, and below for single factor risk maps:
army degree-days, moisture, larval density, larval size, moth counts (same as above), combined risk warning,
pale western degree-days, moisture, larval density, larval size, moth counts (same as above), combined risk warning;

GRASSLinks Interface to interactive maps of all risk factors and combined risk warning:
(click here for advanced selection of all GIS layers and options;
or just select species and factor, mapsize and "GO")
Species and Risk Factor
Overlay Mapsizepixels        

Army Cutworm DDs created daily using a 45 F. lower threshold:
Jan 1 - yesterday Finished Map (click for larger version)
GRASSLinks interactive GIS interface:
(select size and click GO)

Current year

Region
Mapsizepixels        
Montana 2001 to date
Normals (Historical avgs)
Region
Mapsizepixels       
Montana Normals to date
Deviations from Normals
Region
Mapsizepixels       
Montana deviations from normal to date

Pale Western Cutworm DDs created daily using a 50 F. lower threshold:
Jan 1 - yesterday Finished Map (click for larger version)
GRASSLinks interactive GIS interface:
(select size and click GO)

Current year

Region
Mapsizepixels       
Montana 2001 to date
Normals (Historical avgs)
Region
Mapsizepixels       
Montana Normals to date
Deviations from Normals
Region
Mapsizepixels       
Montana deviations from normal to date


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Integrated Plant Protection Center at Oregon State
University
This page updated Apr. 14, 2005
Contact Len Coop at coopl@bcc.orst.edu if you have any questions about this information.