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Great Lakes States Monthly Precipitation Data
NOAA Great Lakes Environmental Research Lab
2205 Commonwealth Blvd.
Ann Arbor, MI 48105-2945
734-741-2235
| Precipitation File List | ||
|---|---|---|
| ILLINOIS | P_IL_DAT.ZIP | IL-HST.ZIP |
| INDIANA | P_IN_DAT.ZIP | IN-HST.ZIP |
| MICHIGAN | P_MI_DAT.ZIP | MI-HST.ZIP |
| MINNESOTA | P_MN_DAT.ZIP | MN-HST.ZIP |
| NEW YORK | P_NY_DAT.ZIP | NY-HST.ZIP |
| OHIO | P_OH_DAT.ZIP | OH-HST.ZIP |
| PENNSYLVANIA | P_PA_DAT.ZIP | PA-HST.ZIP |
| WISCONSIN | P_WI_DAT.ZIP | WI-HST.ZIP |
For each state there are two files having similar file names with the
exception of the first two letters. All of these files are ZIPPED
files, using PKZIP Version 2.04g. The ZIPPED files must be transfered
using BINARY transfer mode to preserve the file integrity.
P_*_DAT files contain the monthly precipitation data for each station
in
that state. These are ZIPPED files, with one file for each station.
*-HST files contain the station history information extracted from the
WB 530-1 forms by the National Climatic Data Center (NCDC). These data
show the station number, latitude, longitude, elevation, station name,
and period of record for each station location. These are ZIPPED files,
with one file for each state.
The format of the unzipped files is as follows
P*.DAT
The name of a station's data file is based on that station's number.
All file names follow the format of P<state #><station #>.DAT.
For
example, Mansfield WSO AP is station number 4865 in Ohio, state number
33,
thus giving the file name P334865.DAT. The first four lines of each data
file contain the header information. The first line tells the type of
data (precipitation). The second line gives the NCDC station number,
latitude, longitude, station name, and elevation in feet above sea level.
The third line shows what period of years is covered. The fourth line
is
blank. Following the header are data for each year covered. The format
for these data are the year followed by the data for each month. The
FORTRAN format is (1X,I4,2X,12F6.2). Following the data is a blank line
followed by a footer. The footer contains notes regarding the data. The
first two lines of the footer give the data codes for trace amounts and
missing values. Some files may also have information regarding combined
data from nearby locations, or station name changes.
*-HST.DAT
The file naming convention is state two letter abbreviation followed
by
-HST.DAT. The following table gives the column, item, and missing value
identifier, if any, for the *_HST.DAT files.
| COLUMNS | ITEM |
MISSING IDENTIFIER |
|---|---|---|
| 01-06 |
STATION NUMBER |
NONE |
| 08-13 |
LATITUDE |
99.999 |
| 15-21 |
LONGITUDE |
-99.999 |
| 23-26 |
ELEVATION |
-999 |
| 28-48 |
STATION NAME |
NONE |
| 50-71 |
STATION NAME QUALIFIER |
NONE |
| 73-82 |
BEGINING DATE (MM/DD/YYYY) |
ALL 9's IN ANY FIELD |
| 84-93 |
ENDING DATE (MM/DD/YYYY) |
ALL 9's IN ANY FIELD, 99/99/9999
FOR EITHER UNKNOWN ENDING DATE, OR STATION STILL IN OPERATION AS OF 12/31/1990 |
A detailed description of data and data reduction proceedures is given in:
Great Lakes States Monthly Precipitation Data - Begining of Record to
1990
NOAA
Technical Memorandum ERL-86 (pdf)
To obtain a copy of the above report contact:
Cathleen Darnell
NOAA Great Lakes Environmental Research Lab
Publications Office
2205 Commonwealth Blvd.
Ann Arbor, MI 48105-2945
734-741-2262
Cathy.Darnell@noaa.gov
For more information on Great Lakes monthly precipitation data:
Cynthia Sellinger
734-741-2385
Cynthia.Sellinger@noaa.gov
Last updated: 2006-06-07 mbl