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Reports from the National Data Buoy Center's Stations During the Passage of Hurricane Humberto

12-13 September 2007

This report provides a summary of wind speed, sea-level pressure and wave parameters reported from National Data Buoy Center (NDBC) stations in the vicinity of Hurricane Humberto's track.

Map showing track of Humberto and nearby stations

Figure 1: NDBC stations within 300 nm of Humberto's track. Note: Only 42019, 42035 and SRST2 were significantly influenced by Humberto.

Wind Speed: Wind speeds are reported in meters per second to a resolution of 0.1 m/s. For the plot legends:

CWS: The average wind speed over a 10-minute period at the anemometer height. In this report, data are plotted at the time of the end of the valid 10-minute period.

MXGT1: The peak 5-second gust during the past hour at the anemometer height. The time of MXGT1 is reported to the nearest minute, however, in this report data are plotted at the valid time of the hourly report.

Pressure: Pressure is sampled at a rate of 1.0 Hz and reported to a resolution of 0.1 hectoPascal (hPa). For the plot legends:

BARO1: Sea-level Pressure. Coastal-Marine Automated Network (C-MAN) stations average the pressure over 2-minutes. The buoy stations average the pressure over 8-minutes.

Wave: The wave sampling period for all stations in this report is 20 minutes.

WVHGT: The significant wave height that represents the average of the highest one-third of the waves during the wave sampling period.

DOMPD: The Dominant Period that represents the wave period (time between consecutive passes of the wave crests) of the waves with the most energy.

Closest Point of Approach (CPA): Time, bearing (degrees true), and distance (nautical miles) from the station to Hurricane Humberto at CPA are computed using the positions from the National Hurricane Center's advisories that have been interpolated to hourly values for positions.



Wind/pressure plot from station 42019

Figure 2: Station 42019, Winds (Anemometer height 5m) and Sea-Level Pressure.



Wave plot from station 42019

Figure 3: Station 42019: Significant Wave Height and Dominant Period.


Event Reported Value Date/Time of Event
Lowest Sea-Level Pressure (BARO1) 1007.3 hPa 09/12 1250Z
Maximum 10-minute Wind Speed (CWS) 12.3 m/s (24 kts) 09/12 1820Z
Maximum 5-s Gust (MXGT1) 15.0 m/s (29 kts) 09/12 1529Z
Maximum Significant Wave Height (WVHGT) 1.8 m (6 ft) 09/12 2050Z
CPA Bearing and Distance To Hurricane 037°, 14.2 nm 09/12 1500Z

Link to Station Page: http://www.ndbc.noaa.gov/station_page.php?station=42019



Wind/pressure plot from station 42035

Figure 4: Station 42035, Winds (Anemometer height 5m) and Sea-Level Pressure.



Wave plot from station 42035

Figure 5: Station 42035: Significant Wave Height and Dominant Period.


Event Reported Value Date/Time of Event
Lowest Sea-Level Pressure (BARO1) 991.7 hPa 09/13 0450Z
Maximum 10-minute Wind Speed (CWS) 25.7 m/s (50kts) 09/13 0410Z
Maximum 5-s Gust (MXGT1) 33.0 m/s (64 kts) 09/13 0405Z
Maximum Significant Wave Height (WVHGT) 3.7 m (12 ft) 09/13 0550Z
CPA Bearing and Distance To Hurricane 238°, 5.6 nm 09/13 0400Z

Link to Station Page: http://www.ndbc.noaa.gov/station_page.php?station=42035



Wind/pressure plot from station SRST2

Figure 6: Station SRST2, Winds (Anemometer height 5m) and Sea-Level Pressure.


Event Reported Value Date/Time of Event
Lowest Sea-Level Pressure (BARO1) 997.0 hPa 09/13 0800Z
Maximum 10-minute Wind Speed (CWS) 30.9 m/s (60 kts) 09/13 0840Z
Maximum 5-s Gust (MXGT1) 38.1 m/s (74 kts) 09/13 0840Z
CPA Bearing and Distance To Hurricane 314°, 9.1 nm 09/13 0800Z

Link to Station Page: http://www.ndbc.noaa.gov/station_page.php?station=SRST2