In contrast, when barometric
pressure was in the lowest tertile, a drop in mean daily barometric
pressure of 0.05 mm Hg or less from one day to the next was associated with a 3.17-fold increased risk of entering the top tertile for new-onset headache, and a day-to-day increase in maximal wind speed of 7 mph or more was associated with a 2.64-fold increased risk.
Time series of water temperature, barometric
pressure, and wind velocity were used to determine their relative influence on sea level variability using the method of Principal Component Analysis (Salas-Monreal & Valle-Levinson, 2008).
A slow-moving storm would have a dip of about .02 to .03 inches of barometric
pressure per hour while a fast-moving storm will drop the barometer about 0.05 to 0.06 inches per hour.
The data on the mountain took less comeups to the 1,000-yard target than at sea level due to the decrease in barometric
Cryan and Brown (2007) demonstrated that during autumn migration Hoary Bats arrived on an offshore island during overcast nights with low wind speeds and barometric
pressures associated with weather fronts.
Bonds implied we don't yet know how crappies might sense changes in barometric
pressure, but he indicated that crappies seemed to seek areas where they experience less distress after a front.
An oft-cited study by Illinois biologist Keith Thomas found that the highest amount of whitetail movement and feeding activity occurred when the barometric
pressure was between 29.80 and 30.39.
The atmospheric pressure signals affected water level in the instruments by the inverse barometric
"The average barometric
pressure is 29.92," said John Kowaleski, another NWS meteorologist.
The new Newport (San Francisco, CA) zSeries wireless sensor system provides Web-based monitoring of temperature, humidity, and barometric
pressure, and mount discretely on the wall in clean rooms, laboratories, and any remote facility.
Wireless inputs for the unit include thermocouple, RTD, temperature, humidity, and barometric
Installed on my bike are rod and lure holders, a Humminbird Piranha 230 depthfinder (with transducer mounted on a telescopic fishing rod), custom mini-tackle boxes, Garmin GPS, Brunton ADC-PRO Weather Station (for barometric
info.), LED headlights and taillights, and even a first-aid kit.