Bob Nekaro Weather Center/Current Storms

 BNWC issuing advisories for the Arctic on Weak Polar Cyclone DONNER

Arctic
Weak Polar Cyclone DONNER

As of 00:00 UTC Nov 13 2017:
 * Location: 69.2°N 8.7°W
 * Maximum Sustained Winds: 75 kt (85 mph)
 * Minimum Pressure: 980 mb

000 ABNT20 KBNWC 242328 PWONP

POLAR WEATHER OUTLOOK BOB NEKARO WEATHER CENTER RALEIGH, NC 700 PM EST SUN NOV 12 2017

For the Arctic basin:

BNWC is issuing advisories on recently downgraded Weak Polar Cyclone Donner, located over the Denmark Strait.

Surface pressures are beginning to fall over the southwestern Hudson Bay. A broad area of low pressure is expected to form over the southwestern Hudson Bay on Monday as a polar wave reaches the area. Conditions are conducive for gradual development, and a polar depression is likely to form by the middle of the week while the system initially is nearly stationary, before it begins to move slowly northward to north-northeastward by late week.


 * Formation chance within 48 hours...low...20 percent
 * Formation chance within 5 days...high...70 percent

Another area of low pressure is expected to form during the middle part of next week over the Open North Atlantic. Some slow polar or subpolar development is possible with this system after that time while it remains nearly stationary. Dry air and unfavorable upper-level winds should limit significant development of this system, but some slight development is possible.


 * Formation chance within 48 hours...low...near 0 percent
 * Formation chance within 5 days...low...20 percent

$$ Forecaster Bob