EVENTS DATABASE: FOG


DESCRIPTION:

Contains occurrences of dangerous fog events in the mid-Atlantic region.

# Occurrences: 331

# Events: 36

Event Criteria: Consecutive occurrences within 6 hrs of each other

Occurrence Criteria: As selected by NCDC events database.

Sources: NCDC events database.


NOTES:

Multiple records within an event share the same datetime.


SELECT DATES:

Database Start Year: 1994

Database End Year: 2005

Please select a starting date and ending date for your query:

Start Date: Enter yyyy mm dd - -

End Date: Enter yyyy mm dd

Month:

Order: Earliest to Latest Latest to Earliest

Only gather occurrences with complete date and time information.

Group occurrences by event index.

The above option will generate an average event time and location. The other fields will not be shown if this option is selected.


SELECT FIELDS:

Please select which fields you'd like to retrieve. If you want all of them, skip to the next section.

Field Name
Description
Format
Incomplete
datetime
The date and time of the occurrence (UTC).
yyyy-mm-dd hh:mm:ss
 
event_index
Describes to which event the occurrence belongs; typically numbered consecutively.
integer
 
lat
The latitude of the occurrence (N-positive).
floating point number
 
lon
The longitude of the occurrence (W-negative).
floating point number
 
comments
Textual damage report.
text
YES
state
The US state of the occurrence.
2-letter state abbrev.
 
county
The county of the occurrence.
integer
 
dense
Whether the fog is classified as "dense".
0 or 1

SELECT FORMAT:

Please select a format for viewing your results. Plain text is best for copying into Excel or another file, while web pages are easiest to read if you are just browsing.

Plain Text (csv Ascii)
Web Page

Selecting too many records may take a long time to process, and could even overload the browser.

Limit: records.

Click "Retrieve Events" to submit your query and view the results.


Interface designed by SJG for Pennsylvania State Climate Office; Summer 2005