Detroit woke to a mild, partly cloudy morning around 66°F, but the calm start is not expected to last. Rounds of showers and thunderstorms are on tap today with a high near 73°F, and a Flood Watch remains in effect through 12:00 a.m. tomorrow. Forecasters warn that efficient downpours and repeated storms could trigger localized flooding on already saturated ground, along with gusty southwest winds and sudden drops in visibility during heavier rain.
Flood Watch And River Risk
Most areas are expected to see less than an inch of new rain, but stronger thunderstorms could drop 1–3 inches in a short window, which increases the risk of urban and creek flooding. The National Weather Service reports that several regional waterways, including the Tittabawassee, Saginaw, Cass and Shiawassee Rivers, are expected to rise and could reach or exceed flood stage; see the latest from NWS Detroit/Pontiac for river statements and updates.
Timing And Travel Impacts
Showers and thunderstorms will be most widespread from late morning through mid-afternoon, with the peak risk for heavy downpours and lightning roughly between 10 a.m. and 4 p.m. today. Southwest winds of 9–14 mph, with gusts around 22 mph, will team up with the rain to create slick roads and pockets of low visibility, and underpasses and other low spots are likely to see ponding. Plan on a slower commute and build in extra time, and if you come across standing water, do not try to drive through it.
Severe Threat And Weekend Shift
There is a small chance of isolated severe storms today that could produce marginally severe wind gusts and hail, while the tornado threat stays low. Drier weather should move in tomorrow before another system brings showers and thunderstorms late Friday into Saturday ahead of a cold front. That front will usher in much cooler air for Sunday, with highs stuck in the upper 40s and a few wet snowflakes possible, and lows may tumble into the 20s Sunday night.
How To Stay Safe
If you live in a flood-prone area, move valuables off the floor and make sure you have a plan to get to higher ground if water starts to rise. The state advises residents to avoid floodwater and keep emergency supplies on hand, guidance that is outlined on MSP Newsroom.
