Observations:
NWS Local Storm Reports (LSR) map, SPC Storm Reports page
NWS Snowfall map with each observation as a point
CoCoRaHS Maps, CoCoRaHS reports by state (change in URL)
MesoWest: Current Conditions & Obs. (change 4 character identifier at end of URL) - KUNV
NWS Observation History Chart (change 4 character identifier at end of URL) - BIS
IEM ASOS Current Conditions by state - CT
SPC Mesoanalysis
Current U.S. Temperatures and Departures, Current U.S. Dew Points and Dew Point Departures
Mesonet (Colored National Maps): Temperature, Heat Index/Wind Chill, Dew Point, Relative Humidity, Wind Speed
Radar:
National Radar Mosaic, Other Zooms
PSU E-Wall North Central Radar Sector with Precip. Type, Northeast, Southeast, Southwest, Northwest
COD Composite Radar (national and zooms)
WSI (able to select regions)
NWS Full-Resolution National Radar
Tomer Burg Radar (full CONUS & zooms)
COD Radar with Reflectivity (switch radar with "Radar Site Map" in top right)
Real Time Weather Data (NCAR) - can select individual radar sites
Canada Radar Viewer
Satellite:
GOES-16 Satellite (can put on overlays in upper left)
GOES Image Viewer main page - tons of views and high-res zooms
E-Wall Extended Loop of U.S. VIS, **E-Wall GOES Satellite homepage
GOES VIS North Central (e-wall)
Custom Satellite Zooms via Weather Nerds
U.S. Composite Satellite (SSEC) Animation
Surface Data:
WPC North America Surface Analysis
Lightning Maps.org
Power Outages Across the U.S.
Real Time Weather Data (NCAR)
USGS - WaterWatch Products Home, Stream Flow Map with Graphs & Forecasts
Great Lakes Ice Cover (from Government of Canada)
NOAA Great Lakes Surface Environmental Analysis (water temp. and ice cover)
Water/Rivers:
River gauges U.S. map, WFO level map (change WFO in URL)
Wind:
Windy.com, Earth Wind Map
Upper Air Data:
SPC Soundings
COD Soundings
UWyoming Soundings
NCAR Upper Air Maps (can also get the most recent sounding by choosing a location)
NWS DIFAX Charts
CPC Blocking index
Aircraft sounding data from U.S. airports
Isentropic Analysis: COD (select "Upper Air Maps" on the side), Iowa State (shows pressure, winds, and relative humidity on different height maps), Earl's Isentropic Web Page
Plymouth State Homepage (Satellite/Radar Composite, click states for observations and forecasts)
Observations/Forecasts: ND, MT, SD, CT, PA, NY, NJ, RI, MA, VT, NH, ME, OH, MD, VA
College of DuPage (all pages under one URL link)
Surface Maps Page (station models, metars, cool derived products): High-Res. U.S. All Station Models Map
RAP Mesoanalysis Products Page (Divergence, Vort. Advection, Frontogenesis, Moisture Advection, etc.)
Cross Section Analysis Page (through central United States, between two cities)
Other:
Aviation Weather Center (turbulence)
Drought Monitor
NWS Local Storm Reports (LSR) map, SPC Storm Reports page
NWS Snowfall map with each observation as a point
CoCoRaHS Maps, CoCoRaHS reports by state (change in URL)
MesoWest: Current Conditions & Obs. (change 4 character identifier at end of URL) - KUNV
NWS Observation History Chart (change 4 character identifier at end of URL) - BIS
IEM ASOS Current Conditions by state - CT
SPC Mesoanalysis
Current U.S. Temperatures and Departures, Current U.S. Dew Points and Dew Point Departures
Mesonet (Colored National Maps): Temperature, Heat Index/Wind Chill, Dew Point, Relative Humidity, Wind Speed
Radar:
National Radar Mosaic, Other Zooms
PSU E-Wall North Central Radar Sector with Precip. Type, Northeast, Southeast, Southwest, Northwest
COD Composite Radar (national and zooms)
WSI (able to select regions)
NWS Full-Resolution National Radar
Tomer Burg Radar (full CONUS & zooms)
COD Radar with Reflectivity (switch radar with "Radar Site Map" in top right)
Real Time Weather Data (NCAR) - can select individual radar sites
Canada Radar Viewer
Satellite:
GOES-16 Satellite (can put on overlays in upper left)
GOES Image Viewer main page - tons of views and high-res zooms
E-Wall Extended Loop of U.S. VIS, **E-Wall GOES Satellite homepage
GOES VIS North Central (e-wall)
Custom Satellite Zooms via Weather Nerds
U.S. Composite Satellite (SSEC) Animation
Surface Data:
WPC North America Surface Analysis
Lightning Maps.org
Power Outages Across the U.S.
Real Time Weather Data (NCAR)
USGS - WaterWatch Products Home, Stream Flow Map with Graphs & Forecasts
Great Lakes Ice Cover (from Government of Canada)
NOAA Great Lakes Surface Environmental Analysis (water temp. and ice cover)
Water/Rivers:
River gauges U.S. map, WFO level map (change WFO in URL)
Wind:
Windy.com, Earth Wind Map
Upper Air Data:
SPC Soundings
COD Soundings
UWyoming Soundings
NCAR Upper Air Maps (can also get the most recent sounding by choosing a location)
NWS DIFAX Charts
CPC Blocking index
Aircraft sounding data from U.S. airports
Isentropic Analysis: COD (select "Upper Air Maps" on the side), Iowa State (shows pressure, winds, and relative humidity on different height maps), Earl's Isentropic Web Page
Plymouth State Homepage (Satellite/Radar Composite, click states for observations and forecasts)
Observations/Forecasts: ND, MT, SD, CT, PA, NY, NJ, RI, MA, VT, NH, ME, OH, MD, VA
College of DuPage (all pages under one URL link)
Surface Maps Page (station models, metars, cool derived products): High-Res. U.S. All Station Models Map
RAP Mesoanalysis Products Page (Divergence, Vort. Advection, Frontogenesis, Moisture Advection, etc.)
Cross Section Analysis Page (through central United States, between two cities)
Other:
Aviation Weather Center (turbulence)
Drought Monitor