Tuesday May 26th 7:45am.. Good morning.. A warm front oriented west-east is located across the Maritimes this morning and is slowly lifting north. Cloud and periods of rain will accompany this feature. Meanwhile, a subtropical area of high pressure is located off the US east coast south of NS and will also drift northward in behind the warm front tomorrow. This feature will bring very warm muggy air to the region. The airmass will also be conducive to afternoon/evening thundershowers which will need to be monitored especially through NB. A very slow loving cold front will be dropping SE on Thursday which will once again focus thunderstorms along its length. This front should move through PEI Thursday night. High pressure will briefly build in for Friday giving some sunshine and cooler temps but temps rebound on Saturday as southerly flow of air returns. Another strong cold front is then expected to approach the region Saturday afternoon crossing the island Saturday evening with showers and severe thunderstorms. This front will then stall just southeast of NS for Sunday and Monday keeping a threat of unsettled weather across the region.
Precipitation.. Rain has spread across the island over the past hour or so and will continue for most of the day ending this evening giving amounts in the 5-10 mms range. Mainly dry for Wednesday but cant rule out an afternoon shower/thundershower. More organized showers/thundershowers spread across the region Thursday evening which could give isolated localized heavy rainfall. Mainly dry for Friday and Saturday then need to watch as a strong cold front crosses the region Saturday night with a potential local heavy rain event. This front will be stalled just south of the Maritimes for Sunday and Monday so could see some stray showers.
Thunderstorms.. There is a risk basically all week but the greatest risk will be on Wednesday, Thursday evening and Saturday. Heavy rainfall being the biggest threat.
Temperatures.. Cooler today under cloud cover and rainfall but still above normal. Warm and muggy conditions return for tomorrow and basically continue into Saturday. Cooler weather on tap for Sunday behind the strong cold front.
Wind.. Brisk SW winds continue through Thursday briefly shifting to the north on Friday morning then back to the south later Friday. Brisk SW winds on Saturday shifting to the north again Saturday night behind the strong cold front.
Watches/Warnings... None for PEI at this time but need to watch the development of thunderstorms for possible severe thunderstorms.
Hazards.. Localized heavy rainfall under strong thunderstorms.
Today.. Cloudy with periods of rain, light-brisk SW winds, highs 19
Tonight.. Rain ending this evening then clearing after midnight, light SW winds, lows 14
Wednesday.. Mainly sunny but can’t rule out an afternoon/evening shower/thundershower, light SW winds, highs 28 humidex values near 33
Thursday.. Cloudy with showers/thundershowers, brisk SW winds, highs 20
Friday.. Sunny, light NE winds, highs 19
Saturday.. Cloudy with showers/thundershowers, brisk SW winds, highs 24
Sunday.. Sunny and cooler, NW winds, highs 12