There is a difference between a stormy day and a rainy day, especially on a holiday weekend. If it storms, that means there was probably enough sunlight and warmth during the day to lead to instability. A day with light drizzle throughout just means it was cloudy and gloomy, as it was on Friday in Detroit. There weren’t and reports of rain on Saturday, but it was still cloudy and cool. Fortunately, infrastructural systems that were at their limit already with water didn’t have to withstand too much more precipitation. Forecast.io collected the top forecast for the day. Actuals: Friday – .06 inches of rain, High 65, Low 59 Saturday – High 72, Low 60
Michigan had some significant issues with heavy rainfall earlier this week, as dams stressed by the new rainfall failed northwest of Saginaw, near Midland and Edenville, forcing thousands to evacuate. Hopefully, a couple of days of calm quiet weather are on their way, and Michiganders can dry out and put things back together.
At 1053AM, ET, Detroit was reporting a temperature of 65 degrees with mostly cloudy skies. At the surface, things were tranquil with high pressure in the area, but an upper level low churning over Kentucky and Tennessee is smothering the region in clouds and an unusual southeasterly flow across Michigan. A result of this is that warmer temperatures are found north of Detroit, while it gets a bit cooler to the south. The low is cut off from the primary flow in the region, which is coursing through central Canada. The feature approaching Appalachia will have no direction, save to attempt to drift towards a jet trough in northern Quebec. The circulation in the eastern Midwest won’t drum up much energy in Michigan, but moisture will probably be persistent in the mid and upper levels, suggesting mostly cloudy skies to begin Memorial Day weekend, though the low level moisture shouldn’t be available to lead to much rain, though drizzle will be possible. Expect some dreary times and temperatures not reaching their potential, but certainly not a terrible start to the weekend. Tomorrow – Mostly cloudy, chance of rain, High 68, Low 56 Saturday – Mostly cloudy, with some drizzle possible, High 74, Low 56
TWC: Tomorrow – Cloudy with occasional showers for the afternoon. High 68, Low 56 Saturday – Intervals of clouds and sunshine. High 76, Low 56
AW: Tomorrow – Mostly cloudy High 67, Low 55 Saturday – Pleasant and warmer with intervals of clouds and sunshine High 75, Low 56
NWS: Tomorrow – Mostly cloudy, High 69, Low 55 Saturday – Partly sunny, High 76, Low 56
WB: Tomorrow – Mostly cloudy, High 66, Low 57 Saturday – Partly cloudy, chance of rain showers in the afternoon, High 75, Low 57
WN: Tomorrow – Mostly cloudy with isolated showers, High 69, Low 55 Saturday – Partly cloudy with isolated storms, High 76, Low 57
FIO: Tomorrow – Possible drizzle in the morning. High 66, Low 55 Saturday – Mostly cloudy throughout the day. High 76, Low 56
My original draft had no precipitation in the Detroit forecast, but then I got cold feet, because they have a local source of moisture just to the east. Still, it’s remarkable to see precipitation forecasts all over the map like this. Should be an interesting verification. Let’s check out this satellite image, with clouds smothering the area just south of Detroit.