This option is not typically used as Hurrtrak Online updates all of the storm observation information. It does however allow the user to enter, change or delete any of the storm's observation data. The observation data shown in the data field boxes is determined by the highlighted observation row at the bottom of the window.

To add new observation data, fill in all of the required data and whatever portion of the optional data you wish, then select  Add Observation.  If you are adding data to an existing storm set, the latest observation information will be preloaded into the data field boxes, making for easier data entry.

To edit a prior observation, select that observation row at the bottom of the window, make the necessary changes, then select Edit Observation.

To maintain the data in a grid (table) view, select Grid Update.  You will be presented with a table of all of the observation data for that the current storm.  You may make changes directly to the table cells.. but be careful there are no data edit checks.

To clear all the fields, select the Clear All Fields option and all data will be cleared.

To delete a prior observation, select that observation at the bottom of  the window and then select Delete Selected Observation.  Remember deleting an observation will also delete all of its associated data.  This includes the official forecast, climatology forecast and advisory information for that observation.

The data entry window:

The following data fields are found on the data entry screen

Adv. No. - The advisory number of the observation

Date - The date of the observation either in UTC or local.  The date/time preference is set in the system setup portion of the system.

Time - The time of the observation either in UTC or local time.  The date/time preference is set in the system setup portion of the system. (HHMM)

Latitude - The latitude position of the center of the storm entered in decimal degrees.  Northern Latitudes are positive.

Longitude - The longitude position of the center of the storm entered in decimal degrees. WESTERN LONGITUDES ARE ENTERED AS A NEGATIVE.

Max wind - The maximum wind speed of the storm.  The unit used (MPH or KTS) is set within the UOM options function.

Central Pressure - The central pressure of the storm.  Pressure must be entered in millibars.

Eye Diameter - The diameter of the eye (nautical miles).  The eye is assumed to be closed and circular.  Default values are 18 nautical miles.

Eye Wall Width - The width of the eye wall (nautical miles).  The default value is 9 nautical miles.  Valid range 1 - 100 miles.

Radius of 74 MPH / 64 Knot Winds (NE Sector) - The distance (nautical miles) that hurricane force winds extend from the center of the storm on the Northeast side of the storm.

Radius of 74 MPH / 64 Knot Winds (SE Sector) - The distance (nautical miles) that hurricane force winds extend from the center of the storm on the Southeast side of the storm.

Radius of 74 MPH / 64 Knot Winds (SW Sector) - The distance (nautical miles) that hurricane force winds extend from the center of the storm on the Southwest side of the storm.

Radius of 74 MPH / 64 Knot Winds (NW Sector) - The distance (nautical miles) that hurricane force winds extend from the center of the storm on the Northwest side of the storm.

Radius of 58 MPH / 50 Knot Winds (NE Sector) - The distance (nautical miles) that 50 knot winds extend from the center of the storm on the Northeast side of the storm.

Radius of 58 MPH / 50 Knot Winds (SE Sector) - The distance (nautical miles) that 50 knot winds extend from the center of the storm on the Southeast side of the storm.

Radius of 58 MPH / 50 Knot Winds (SW Sector) - The distance (nautical miles) that 50 knot winds extend from the center of the storm on the Southwest side of the storm.

Radius of 58 MPH / 50 Knot Winds (NW Sector) - The distance (nautical miles) that 50 knot winds extend from the center of the storm on the Northwest side of the storm.

Radius of 39 MPH / 34 Knot Winds (NE Sector) - The distance (nautical miles) that 34 knot winds extend from the center of the storm on the Northeast side of the storm.

Radius of 39 MPH / 34 Knot Winds (SE Sector) - The distance (nautical miles) that 34 knot winds extend from the center of the storm on the Southeast side of the storm.

Radius of 39 MPH / 34 Knot Winds (SW Sector) - The distance (nautical miles) that 34 knot winds extend from the center of the storm on the Southwest side of the storm.

Radius of 39 MPH / 34 Knot Winds (NW Sector) - The distance (nautical miles) that 34 knot winds extend from the center of the storm on the Northwest side of the storm.