Surface Prognostic Charts

Metadata Updated: November 12, 2020

Surface Prognostic Charts are historical surface prognostic (forecast) charts created by the United States Weather Bureau. They include fronts, isobars, cloud, and precipitation areas. There are two separate charts: one is a four-panel 12- and 24-hour, in which the upper two panels are devoted to low-level significant weather; the other, a two-panel 36- and 48-hour with discussion. The discussion is limited to about 260 abbreviated words. Because of the space limitation, it may contain different kinds of information on one example of the chart than on another; but the following information is always included: a. Date/time of the initial data, b. Extent of numerical guidance available, c. Each weather system with significant developments, d. The "how" and "why" of any modification of numerical guidance, e. Revisions of previous forecasts, if needed, f. Clarification of any abrupt changes in continuity. The discussion was written and signed by the forecaster who made the forecast. 12 and 24-hour surface prognoses (0600z and 1800z initial data) were prepared in conjunction with the 30-hour surface forecast and had a four-panel format, in which the upper two panels were devoted to low-level significant weather. The 12 and 24-hour charts were prepared 4 times daily from 00z, 06z, 12z, and 18z initial data. The 36 and 48-hour prognoses with forecast discussions were prepared twice daily from 00z and 12z initial data. These charts cover the conterminous United States, southern Canada, and northern Mexico and have a scale of 1:26.7 million. Charts were produced between 1947 and 1966.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources


Metadata Date November 5, 2018
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) 1947-08 (publication)
Frequency Of Update notPlanned

Graphic Preview

Sample Chart

Additional Metadata

Resource Type Dataset
Metadata Date November 5, 2018
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) 1947-08 (publication)
Responsible Party DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce (Point of Contact)
Contact Email
Guid gov.noaa.ncdc:C00185
Access Constraints Cite this dataset when used as a source., Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Bbox East Long -66.0
Bbox North Lat 72.0
Bbox South Lat 18.0
Bbox West Long 172.0
Coupled Resource
Frequency Of Update notPlanned
Graphic Preview Description Sample Chart
Graphic Preview File
Graphic Preview Type JPEG
Harvest Object Id 6db1e440-6308-413e-8bb1-079708388452
Harvest Source Id 2cb3ef77-1683-4c2a-9119-dc65e50917c6
Harvest Source Title ncdc
Metadata Language eng; USA
Metadata Type geospatial
Progress historicalArchive
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 1947-08-01
Temporal Extent End 1966-03-31

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