NCDC / Products & Publications / Specialized Products / Online Data

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SPECIALIZED PRODUCTS

General Information

Cooperative Station Extremes Tabulation: This tabulation shows daily and monthly extremes for the entire period of record (generally 1948 to present) for U.S. cooperative and National Weather Service sites. There are currently over 8000 of these stations active. The elements included are maximum/minimum temperature, precipitation, and snowfall.

Wind Rose Summary: This summary provides a statistical summary of wind speed vs wind direction for any station (U.S. or foreign) reporting adequate observational data. Data are tabulated in incremental 'bins' such as 0-3 miles per hour, 4-7 miles per hour, etc.

Mixing Height Summary: This summary provides a day by day estimate of the mixing height for the boundary layer by using surface and upper air observational data. It's often used for pollution and air dispersion models.

Stability Array: This provides month by month averages of surface-based stability in Pasquill stability categories. Hourly or synoptic surface observations are used as input.

Comparative Climatic Data: This product contains climatological normals and averages for 270 NWS offices, in ASCII data files.

Summary of Day Data for U.S. and Foreign Sites: This historical summary of day data can be produced from any station reporting synoptic and/or hourly observational data. The format is the same as the on-line global summary of day data. It includes the following elements for each day available:

Mean temperature
Mean dew point
Mean sea level pressure
Mean station pressure
Mean visibility
Mean wind speed
Maximum sustained wind speed
Maximum wind gust
Maximum temperature
Minimum temperature
Precipitation amount
Snow depth
Indicators for occurrence of:

Fog
Rain
Snow
Hail
Thunder
Tornado/Funnel Cloud

NCDC / Products & Publications / Specialized Products / Online Data