D21 Tracon Decision Support

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101 PM EST Thu Nov 21 2024
.AVIATION...

Large upper low over the Great Lakes with an associated surface low
dropping south along Lake MI this afternoon is resulting in
widespread cloud cover and light rain/snow mix across the local
area. The combination of CIGS mainly in the 1000-2000ft layer and
pulses of showers will result in mainly MVFR conditions through the
rest of the afternoon. Will go more pessimistic with CIGS into the
overnight as guidance really wants to lift CIGS for a while but
there are several areas of moisture rotating around the low which
suggests the clouds may hold longer into the night. Tonight the flow
does turn more northwesterly which will help dry out the airmass
improving the area to VFR. Winds will be westerly under 10 knots
today, before turning northwesterly and becoming gusty early Friday
morning with gusts over 20 knots. Moisture wrapping back in off Lake
Huron attempts to brush the terminal corridor which would bring
lower clouds back to the area.

DTW THRESHOLD PROBABILITIES...

* High in ceilings aob 5000 ft today and tonight.

* High in snow/rain mix as the precipitation type today.

TAF Dashboard (AWC)

877 FTUS43 KDTX 211725 TAFDTW TAF KDTW 211725Z 2118/2224 26010KT 4SM -RASN BR BKN015 OVC025 FM212100 28006KT P6SM BKN022 OVC040 FM220200 31008KT P6SM BKN030 OVC060 FM220800 32012G22KT P6SM SCT030 BKN080 FM221400 33014G28KT P6SM OVC020=