Great Lakes Forecast
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FZUS63 KDTX 210200
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
1000 PM EDT Mon May 20 2019

Waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. Occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.SYNOPSIS...Surface pressure will be on the rise today over the
lakes as high pressure strengthens. By this evening, pressure
readings should reach 30.00 inches. Winds will generally be from
the southwest, shifting toward the northwest at 15 to 20 knots.
Gusts as high as 30 knots will be possible over open waterways
before sunset. High pressure will push further east helping
increase mercury values to around 30.20 inches by Tuesday morning
with dry and calmer conditions. The pressure trend will then
reverse on Wednesday with wet and potentially stormy conditions.

LCZ460-210815-
Lake St Clair-
1000 PM EDT Mon May 20 2019

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING...

.REST OF TONIGHT...Northwest winds 10 to 15 knots becoming west 5 to
10 knots after midnight. Mostly clear. Waves 2 feet or less.
.TUESDAY...Northwest winds 5 to 10 knots veering to the northeast in
the late morning and afternoon. Mostly sunny in the morning becoming
mostly cloudy. Waves 2 feet or less.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots becoming east 10 to
15 knots after midnight. Mostly cloudy. Waves 2 feet or less.
.WEDNESDAY...Southeast winds 10 to 15 knots. Mostly cloudy with a
chance of showers and thunderstorms. Waves 1 to 3 feet.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Partly cloudy with a
chance of showers and thunderstorms. Waves 2 feet or less.
.THURSDAY...Southwest winds 10 to 15 knots veering to the northwest
in the evening. Partly sunny with a chance of showers and
thunderstorms...then mostly clear in the evening. Waves 2 feet or
less.
.FRIDAY...Southeast winds 5 to 10 knots. Partly cloudy. Waves 2 feet
or less.
.SATURDAY...West winds 10 to 15 knots. Partly cloudy. A chance of
showers and thunderstorms. Waves 2 feet or less.

$$

MR

Experimental modernized open lake forecast is available online at
weather.gov/dtx/glftablesc

Graphical marine forecasts are available at weather.gov/greatlakes


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.