09-26-2015, 05:00 AM
quote:
Originally posted by TomK
jackson,
"why does the storm appear to be moving North on the radar???"
I'm assuming you mean satellite images rather than radar, as the storm is too far away to be seen on Hawaii weather radars. As for the northern movement, you're likely seeing the high-level clouds from the storm being pulled off by north-easterly shear, i.e high level winds. The low-level center of the storm is still moving to the north-west, but isn't particularly obvious on satellite images.
According to the forecast advisory it's moving to the NW:
DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
AT 800 AM HST...1800 UTC...THE CENTER OF TROPICAL STORM NIALA WAS
LOCATED NEAR LATITUDE 17.4 NORTH...LONGITUDE 151.8 WEST. NIALA IS
MOVING TOWARD THE NORTHWEST NEAR 7 MPH...11 KM/H. A TURN TOWARD
THE WEST AND A SLOWING OF THE FORWARD MOTION IS EXPECTED TODAY
AND SUNDAY. ON THE FORECAST TRACK...THE CENTER OF NIALA WILL PASS
100 TO 150 MILES SOUTH OF THE BIG ISLAND SUNDAY NIGHT.