08-09-2009, 12:24 AM
http://weather.unisys.com/hurricane/e_pa...index.html
(thanks for that link, Bullwinkle!)
shows this as one of its predictions for the path of Felicia:
48HR VT 11/0600Z 20.6N 154.6W 40 KT
this can be translated as:
8pm, Aug 10 (Monday) 20.6N 154.6W (70 miles NNE of Hilo) 40-knot winds
Show your work:
11/0600
means 6am on August 11th UTC. Subtract 10 hours to get 8pm August 10th (Hilo time)
Hilo is at 19.7N 155.1W
20.6N 154.6W is about 70 miles away, mostly to the north (in line
with the south coast of Maui) and a bit to the east of the easternmost
point of Hawaii. You can type these coordinates straight into
www.googlemaps.com to see where they are.
http://jan.ucc.nau.edu/~cvm/latlongdist.html will calculate the
distance between two points defined by latitude and longitude.
Finally, at
http://en.wikipedia.org/wiki/Beaufort_scale
a 40-knot wind is described as Beaufort 8 with land conditions as
"Some twigs broken from trees. Cars veer on road. Progress on foot is seriously impeded."
(thanks for that link, Bullwinkle!)
shows this as one of its predictions for the path of Felicia:
48HR VT 11/0600Z 20.6N 154.6W 40 KT
this can be translated as:
8pm, Aug 10 (Monday) 20.6N 154.6W (70 miles NNE of Hilo) 40-knot winds
Show your work:
11/0600
means 6am on August 11th UTC. Subtract 10 hours to get 8pm August 10th (Hilo time)
Hilo is at 19.7N 155.1W
20.6N 154.6W is about 70 miles away, mostly to the north (in line
with the south coast of Maui) and a bit to the east of the easternmost
point of Hawaii. You can type these coordinates straight into
www.googlemaps.com to see where they are.
http://jan.ucc.nau.edu/~cvm/latlongdist.html will calculate the
distance between two points defined by latitude and longitude.
Finally, at
http://en.wikipedia.org/wiki/Beaufort_scale
a 40-knot wind is described as Beaufort 8 with land conditions as
"Some twigs broken from trees. Cars veer on road. Progress on foot is seriously impeded."