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Displaying AFOS PIL: AFDGRR Received: 2018-03-20 23:16 UTC
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594 FXUS63 KGRR 202316 AFDGRR Area Forecast Discussion National Weather Service Grand Rapids MI 716 PM EDT Tue Mar 20 2018 LATEST UPDATE... Aviation .SYNOPSIS... Issued at 330 PM EDT Tue Mar 20 2018 A strong and persistent area of high pressure, centered near Hudson Bay, will continue to deliver cool and dry air to Michigan through next weekend. Our dry weather pattern with considerable sunshine will continue, although some light snow may brush far southwest Lower Michigan on Saturday. && .SHORT TERM...(This evening through Thursday night) Issued at 330 PM EDT Tue Mar 20 2018 The system currently passing through the Ohio Valley Region and the strong high to the north is resulting in a tight pressure gradient. Expect our brisk northeast winds to persist through Wednesday morning before the gradient gradually relaxes a bit. That system will also result in considerable high level cloudiness tonight into Wednesday. Those clouds depart Wednesday night, leaving predominately clear skies for Thursday. .LONG TERM...(Friday through Tuesday) Issued at 330 PM EDT Tue Mar 20 2018 Deterministic models and the majority of individual ensemble members continue to trend south with the Saturday system. This makes sense given the very dry air mass and shearing pattern aloft that continues to impact Michigan. Main impacts from that system as it passes by to the south will be a a period of increased cloudiness and another period of stronger/brisk east- northeast winds. As we move into next week, we should see moderating temperatures as the dominant high begins to slip away and flow aloft goes more southwesterly. A chance of rain showers should eventually develop next week, but believe the GFS may be too fast and aggressive in bringing in showers. && .AVIATION...(For the 00Z TAFS through 00Z Wednesday evening) Issued at 714 PM EDT Tue Mar 20 2018 VFR weather to continue into tonight as the atmosphere remains dry. Winds will remain gusty...but mostly from the east to northeast. && .MARINE... Issued at 330 PM EDT Tue Mar 20 2018 Brisk northeast winds will continue tonight before turning more northerly on Wednesday. Speeds flirting with Small craft Advisory criteria through tonight, but wave heights remaining below criteria due to offshore component of the wind. Highest wave heights will be out toward open water. && .HYDROLOGY... Issued at 330 PM EDT Tue Mar 20 2018 Persistent dry pattern will allow rivers to continue to slowly recede. The Portage River at Vicksburg will continue to remain elevated for a few days yet, however. River levels should remain near to below normal for the foreseeable future given the pattern. && .GRR WATCHES/WARNINGS/ADVISORIES... MI...None. LM...None. && $$ SYNOPSIS...Meade SHORT TERM...Meade LONG TERM...Meade AVIATION...MJS HYDROLOGY...Meade MARINE...Meade