Archived Plotted Surface Data and/or Contoured Overlay Maps
Select year, month, date, and time for the display, region, map size, density for plotted data, background color for map, scaling size for plotted data and/or contour labels, first variable, type of contoured or plotted map, contour interval, color of plotted data or line contours, and similar settings can be set for a second variable for an overlay map.

Year:	Month:	Day:	Time:
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024	Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec	1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31	0 Z 1 Z 2 Z 3 Z 4 Z 5 Z 6 Z 7 Z 8 Z 9 Z 10 Z 11 Z 12 Z 13 Z 14 Z 15 Z 16 Z 17 Z 18 Z 19 Z 20 Z 21 Z 22 Z 23 Z
Region:	Map Size:	Plot Density:	Background:	Map Color:	Scaling:
New England New Hampshire Northeast Mid-Atlantic Southeast Midwest Southern Plains Northwest Southwest Contiguous US Alaska Hawaii Eastern Canada Western Canada Northern Canada Canada North America Central America South America Europe Asia Pakistan North Asia West Asia Southeast Asia Africa North Africa South Africa Middle East Australia West Pacific Antarctica Arctic	640x480 800x600 912x650 1024x768	Default Density Lowest Density Low Density Moderate-Low Density Moderate-High Density High Density Highest Density	white black light gray	black white red green blue cyan magenta	.4 .5 .6 .7 .8 .9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0
Variable1:	Contour Type:	Interval:	Color:
Station Plot(F) Temperature(F) Temperature(C) Water Temps(C) Virtual Temp Potential Temp Virtual Pot. Temp Equiv. Pot. Temp Wind Chill (2001-present formula) Wind Chill (pre 2001 formula) Heat Index Temp Advection Dewpoint Relative Humidity Mixing Ratio Specific Humidity Moisture Convergence Sea Level Pressure Pressure Tendency Station Pressure Sfc Altimeter Setting Cloud Ceiling Wind Barb Wind Vector Streamlines Wind Direction Wind Speed Wind Gusts Relative Vorticity Absolute Vorticity Vorticity Advection Surface Convergence Surface Visibility Max Temperature Min Temperature Snow Depth 1HR Precip 6HR Precip 24HR Precip City IDs	line color fill dashed line gridpoint plot	.1 .5 1 2 4 5 10 20 25	black white red green blue cyan magenta
Variable2:	Contour/Plot Type:	Interval:	Color:	Web/Print:
No Overlay Variable NCEP Fronts Station Plot(F) Temperature(F) Temperature(C) Water Temps(C) Virtual Temp Potential Temp Virtual Pot. Temp Equiv. Pot. Temp Wind Chill (2001-present formula) Wind Chill (pre 2001 formula) Heat Index Temp Advection Dewpoint Relative Humidity Mixing Ratio Specific Humidity Moisture Convergence Sea Level Pressure Pressure Tendency Station Pressure Sfc Altimeter Setting Cloud Cover Cloud Ceiling Wind Barb Wind Vector Streamlines Wind Direction Wind Speed Wind Gusts Relative Vorticity Absolute Vorticity Vorticity Advection Surface Convergence Surface Visibility Present Weather Weather Depiction Max Temperature Min Temperature Snow Depth 1HR Precip 6HR Precip 24HR Precip City IDs	line data plot dashed line gridpoint plot	.1 .5 1 2 4 5 10 20 25	black white red green blue cyan magenta	Web Page Print Only

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Notes:

• Online archived hourly data go back to July 30, 1998.
• The station plot legend is shown here.
• The 912x650 size works best for full page 8.5"x11.5" printing, if you select the landscape orientation using the "Properties" or "Preferences" option of the print window.
• NCEP front data that cover N. America are available as an overlay option. Archived 3-Hourly NCEP front data start at 00Z on 9 February 2001 and end at 09Z on 1 October 2018 and resume again on 1 October 2020. These archived NCEP frontal position data are available every 3 hours and are valid for 00Z,03Z,06Z,09Z,12Z,15Z,18Z, and 21Z. Choosing an intermediate hour will return data for the previous valid hour.