Sunday, September 30, 2007

Low pressure taking aim at area

Synopsis: A strong low pressure system currently apporaching Baffin Island is slightly stronger than originally predicted. Minimum central sea level pressure expected to reach 979 mb over the Davis Strait early Tuesday. This will slow the eastward progression down a bit, with the main impact over the Davis Strait now expeced to occur Tuesday, and lasting into Wednesday.

Monday...Sunny, then increasing clouds. Possible breezy conditions at times in the Nuuk area, but strongest winds will remain offshore. Northerly winds will be shifting to southerly winds late. High temperatures in the mid 40's.

Tuesday...Mostly cloudy and breezy, with rain likely. Expected arrival time of precipitation between 00 UTC and 06 UTC in Nuuk. Frozen precipitation over the Davis Strait. Strong winds will form first at the mouth of the Hudson Strait, with westerly winds sustained at 30-40 knots from about 03 UTC till 00 UTC Wednesday with higher gusts. Strong northerly winds developing on the Davis Strait around 20 UTC, with winds at that location also expected to be sustained at 30-40 knots with higher gusts. Temperatures will be colder, only reaching to around freezing on the Davis Strait.

Wednesday....The low pressure will be weakening as it moves further east of the strait. However, northerly winds will be slow to die down in the strait, but should gradually weaken throughout the day. Temperatures will be cold, with highs of only 0 degrees C expected.

Outlook...No other major weather systems expected.

Almanac for Nuuk:
Sunday (through 5pm local time): High = 41 degrees F. Low = 36 degrees F. Maximum wind speed = 13 knots.
Saturday: High = 35 F. Low = 32 F. Maximum wind speed = 17 knots.

Saturday, September 29, 2007

Strong low pressure system to arrive late Monday

Sunday...Partly cloudy over the strait, clouds increasing toward Nuuk. A low pressure system will be moving over the southern tip of Greenland. Most precipitation should stay south of Nuuk, with most of the effects being clouds and gusty winds in the Nuuk area. Winds will be strongest over the eastern strait with sustained winds reaching up to 35 knots. Strong and gusty localized winds also possible in the Nuuk area, especially late. High temperatures in the mid 40's.

Monday...Increasing clouds with precipitation likely developing. Winds will begin to shift from a northerly (from the north) to a southerly (from the south) direction. By the end of the day, southerly winds will be sustained at 30 knots throughout most of the strait. Wind shift will occur later in the day in Nuuk. The low pressure center is now expected to reach the Davis Strait at 00 UTC on Tuesday, with a strength of 984 mb. The strongest winds will be on the backside of the low pressure, where winds will be northerly and strong, lasting throughout the day Tuesday.

Tuesday...Possible strong northerly winds down the strait expected to perist. Winds of over 30 knots expected. Temperatures cooler and light precipitation will me mixed with light frozen precipitation at times.

Outlook...Conditions are expected to improve everywhere by Wednesday.

Friday, September 28, 2007

Possible low pressure system to arrive late Sunday and all day Monday

Saturday...Partly clouds with winds picking up in the eastern strait to around 30 knots (~15 m/s) in the evening. Temperatures near 0 C.

Sunday...Windy, especially in the eastern strait as a strong low pressure system will move well south of the strait (near the southern tip of Greenland). Sustained winds may be in excess of 30 knots (~15 m/s) from around 00 UTC Sunday to 00 UTC Monday in the eastern Strait. Otherwise expect increasing clouds as a low pressure will begin to effect the whole area late. Temperatures up to a few degrees above 0 C.

Monday...A possible major low pressure system is expected begin to spread clouds and precipitation by 00 UTC Monday. The current forecasted minimum sea level pressure is 984 mb and is currently forecasted to pass directly over the Davis Strait at 18 UTC Monday. Expect southerly winds ahead of the low pressure and then a switch to northerly winds late Monday after it passes. This could provide very windy conditions and rough seas, especially on the backside with the northerly winds as they could be accelerated by the geography of the strait. The exact timing and strength of this system is rather uncertain at this time.

Thursday, September 27, 2007

First weather outlook for Davis Strait

Friday Oct. 28th and Saturday Oct. 29th...Partly cloudy skies with temperatures just above 0 C. Winds light and variable.

Sunday Oct. 30th....Partly cloudy skies. A low pressure will move well south of the strait, but north winds down the strait toward the low pressure may pick up a little. Strongest winds will be on southeast side, possibly reaching 30 knots (~15 m/s) at times.

Outlook: A low pressure and cold front is expected to arrive Monday. Will keep a watch on and update more in next forecast.

Sunday, September 9, 2007

Steven's weather vortex

Since this is called "Steven's weather vortex" I thought I'd actually put a picture up of a real "weather vortex." There is a picture on the right showing one such vortex, from August 9, 2007 near Cambridge Bay, Nunavut.